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Tag: inflation

  • How does the Central bank control inflation?

    You may have heard in the news in the last year, that the Fed has been raising the interest rate. In this post, I will be explaining which is the “interest rate” and how the central bank of the U.S. (the Federal Reserve) does that to control inflation.

    After Jan 2022, there has been a steady rise in prices of many items, esp. fuel, housing rent, and food prices. If you want to understand what inflation is and how it is calculated, you can read my detailed article on inflation here.

    Inflation always happens when there is more demand than supply and when there is an expectation of inflation to continue. Producers raise the price of the goods and services in demand, to make more profit from them.

    The central bank of a country (the Federal Reserve in the US) intervenes when inflation is out of control or is significantly high compared to the target level. As this blog mostly focuses on the US Federal Reserve monetary tools, I use the terms the Fed and central bank interchangeably. However, central banks in other countries also use similar monetary tools.

    Is inflation always bad?

    In the US and many advanced countries, the target average rate of inflation is around 2% every year. This little bit of inflation rate is considered desirable, as it helps borrowers pay off their debt. When there is some inflation, borrowers will have to pay slightly less in purchasing power terms because their money is now worth less to the lenders, exactly by the rate of inflation.

    Additionally, it also motivates people to spend their money on goods and services instead of holding on to them, as their money will lose its value next year by the rate of inflation. So, we get our normal production and consumption, and the economy continues to run smoothly.

    What are the two goals of a central bank and how does it achieve it?

    The central bank uses monetary policy to keep inflation low and promote maximum employment. By maximum employment, we mean the highest level of employment that an economy can sustain while maintaining a stable inflation rate. In the US, these goals are referred to as the Fed’s dual mandate.

    You may ask how the Fed achieves its dual goals. Essentially, the Fed uses its monetary policy tools to start a chain reaction in the economy, each causing one another. In the US, the Fed’s chief body for monetary policymaking is called the Federal Open Market Commission (FOMC). FOMC meets eight times a year and looks at data on current economic conditions, like what is going up and what is going down and how the economy is likely to do in the future based on the data. Based on that information the FOMC makes monetary policy decisions.

    When inflation is high for a long period and unemployment is at a very low level, we call it an overheating economy. The central banks try to raise the interest rates to slow down the overheating economy. This is called contractionary or tight monetary policy.

    Tools of Monetary Policy

    Now, let’s look at the tools the Fed can use to bring inflation down to the stable 2% average rate. This is done in two steps:

    First, the Federal Open Market Committee (FOMC) will raise the target range for the Federal funds rate. This is the rate at which commercial banks borrow and lend their excess reserves to each other overnight. This rate is not set by the Fed, instead, it is determined by the market forces of demand and supply between commercial banks.

    On any given date, there are many different transactions in the federal funds market and they settle at slightly different rates, the effective federal funds rate measures the median rate of these transactions.

    FOMC sets a target range for the federal funds rate. In other words, the majority of the banks’ transactions should fall within the target range. Banks with deficits can borrow money from other commercial banks. The next day those banks return the money with a little bit of interest.

    Now, the main task for the Fed is to use its monetary tools so that this federal funds rate goes up because this is the driving force for all the other interest rates in an economy.

    Interest on reserve balance is the main tool

    So, to steer the federal funds rate in the target range set by FOMC, the Fed uses interest on reserve balance as its primary monetary policy tool. The interest on reserve balances rate is the interest received by commercial banks on deposits that banks hold in their reserve balance account at a regional Federal Reserve Bank. This interest rate is a risk-free investment option for commercial banks. This, the interest on reserve balances rate is set by the Fed and is, therefore, an “administered rate,”.

    Interest on reserve balance: Banks can deposit the excess reserve with the Fed risk-free overnight, and earn interest just like you can do with a savings account.

    When the Fed sees the economy is overheating with high inflation and a tight labor market, it tries to slow down the economy by raising the interest on the reserve balance. With that, the banks will be more willing to deposit their reserves with the Fed, rather than lending to other banks in the federal funds market.

    A key point to note here is that the interest on reserve balances rate serves as a reservation rate or the floor rate for banks. This is the minimum interest banks would be willing to accept in order to lend to each other, rather than keeping it with the Fed. If the Fed raises this interest on the reserve balance, commercial banks must raise the Federal funds rate in order to attract other banks to lend to them.

    Another key concept that ensures that the federal funds rate does not fall far below the interest on reserve balances rate is called arbitrage. Arbitrage means simultaneous purchase and sale of funds (or goods) in order to profit from a difference in price.

    So, for example, if we assume the federal funds rate is 1.75 percent and the interest on reserve balances rate is slightly higher at 2.25 percent, banks will see that they can borrow funds in the federal funds market at a lower rate and earn higher interest by depositing those funds at the Fed. They will keep doing that until with the forces of demand and supply, the increase in demand for funds in the federal funds market will cause the federal funds rate to rise. It will keep rising until it reaches the interest on reserve balances rate so that banks no longer see the opportunity to profit by borrowing in the federal funds market and depositing it with the Fed. 

    As the Fed sets the interest on reserve balances rate directly, the Fed can steer the federal funds rate up or down by raising or lowering the level of the interest on reserve balances rate. In fact, this phenomenon of arbitrage makes interest on reserve balances a very effective tool for steering the federal funds rate direction.

    There are two other tools that the Fed can use to guide the federal funds rate

    1. By setting a floor with an overnight reverse repurchase rate,

    2. and by setting the ceiling using a discount window

    Let’s understand both of them.

    The Fed has an overnight reverse repurchase facility that is open to a broader set of financial institutions, as interest on reserve balances is available only to banks and a few other institutions. This facility allows these financial institutions to deposit their funds at a Federal Reserve Bank and earn the overnight reverse repurchase agreement rate offered by the Fed.

    Thus, the overnight reverse repurchase agreement rate does the same thing as the interest on reserve balances rate does by acting as a reservation rate for these financial institutions. If this rate is higher than the federal funds rate, then by pressure of demand and supply, the Federal funds rate starts going up until there is no profit from arbitrage. The overnight reverse repurchase agreement facility is a supplementary tool because the rate the Fed sets for it helps set a floor for the federal funds rate.

    So when it raises the overnight reverse repurchase rate, the Federal funds rate tends to move up as well.

    The discount rate is the rate banks have to pay to the Fed for borrowing money from the Fed through the Fed’s discount window. Banks are more likely to borrow from each other (at the federal funds rate) only if it is lower or equal to the discount rate that they have to pay to borrow from the Fed. Thus, the discount rate acts as a ceiling for the federal funds rate. Also, it is set higher than the interest on reserve balances rate and the overnight reverse repurchase agreement rate.

    Lastly, there is another tool that used to be the Fed’s primary tool to control the money supply in the economy before the 2008 financial crisis. This is called open market operations where the Fed would buy or sell t-bonds. Now, with ample reserves in the banking system, the Fed only uses this as a supplemental tool to help maintain ample levels of reserves. The Fed can buy or sell government securities in the open market to increase or decrease these reserves in the banks account with the Fed.

    In a nutshell, when the Fed wants to control inflation, it would set a higher range for the Federal funds rate. To achieve this target, it would increase the interest on reserve balances rate as the main monetary policy tool. It can also use additional tools by raising overnight reverse repurchase agreement rate, and discount rate. All this will ensure the federal funds rate stays within the high target range set by the FOMC.

    Why does the Federal fund rate matter?

    Since the federal funds rate affects all the other interest rates in the economy, all the other interest rates go up as well. At high interest rates, households will borrow less money to buy big-ticket items they want. This will cause a reduction in spending by households. This will cause overall savings to increase because now they are getting higher interest rate to save money in a bank.

    Once household demand is reduced, firms will reduce their investments. They will also reduce their workforce and demand fewer workers. This will reduce employment levels also and cause the inflated prices to return to the target of 2%.

    The now-raised federal fund rate would cause other market interest rates like mortgage, auto, and other interest rates that banks charge from households and businesses to rise as well. The increased cost of borrowing will reduce spending across all sectors of the economy, lowering excess demand and bringing prices back to normal.

    The Fed will do the exact reverse of this process when the economy is in a recession when the inflation is below the 2% target rate and there is high unemployment. It will lower the Federal funds rate target range by lowering interest on the reserve balance. It can also use additional help from lowering interest on overnight reverse repurchase agreement rates, and discount rates to give a boost to the economy.

    How effective are these tools in reality?

    All these monetary policy tools only work when inflation is caused by demand-pull factors. However, if it is due to cost-push factors, this measure may cause more harm than good. Cost-push factors include supply shocks when the supply of the products is hampered. There could be many reasons for a reduction in supply such as increased cost of raw material and other inputs, and natural calamities. Trade restrictions such as sanctions imposed on a country can also cause supply disruptions.

    Also, there is a direct link between reducing inflation and reducing overall economic growth. Even though central banks aim for a soft landing when they raise interest rates to bring down inflation, sometimes it doesn’t go as planned.

    In economics, a soft landing means a moderate economic slowdown following a period of growth. In the past, the Fed in the US has had a mixed record in achieving a soft landing when it raised interest rates.

    In addition, inflation expectations continue to play a key role in how people react to the contractionary monetary policy. If people continue to believe the prices to go up, they will tend to make the purchases now, rather than in the future when the worth of their money can get further low.

    The board of governors at the Fed, as well as various economists that work there, take into consideration all these factors and keep a watch on the trend. They can alter the monetary policy according to the direction of its performance.

  • The latest inflation report is out! What to expect next from the Fed?

    The bureau of labor statistics (BLS) just released the inflation number for January 2023 for the United States.

    There is a 0.5% increase from the December number, and inflation sits at still a whooping high of 6.4% over the last 12 months from January 2022.

    As you can see in the BLS chart above, the year-to-year inflation is 6.4% for all the items, 10.1% for food, 8.7% for energy, and 5.6% for all the things except food and energy. Also, in their press release, they mentioned the index for shelter was the largest contributor to the monthly inflation number.

    By shelter, they mean rents and owner equivalent rent cost of housing.

    If you look at this detailed table from them, it shows the breakdown in prices for all the individual items.

    Source: BLS


    Under the energy category, fuel oil is still up by 27.7% for the 12 months. Natural gas is also up by 26.7% in the 12 months.

    There is a 14% rise in Dairy and related products in the food category. 

    You can see that the highest inflation happened in cereal and bakery products. This was mainly because of the rise in egg prices because we felt that in the grocery stores.

    What caused egg prices to rise so much?

    Economists think the bird flu was the main reason behind increased egg prices because about 40 million egg-laying hens died in 2022 because of this disease.

     At the same time and the demand for eggs continues to rise because it provides a cheaper source of protein to many Americans. Thus both these supply and demand factors contributed to a significant rise in egg prices. 

    Was this inflation expected?

    This came as a little bit of a disappointment because people were expecting the overall inflation not to rise if not fall from the December level, even though fuel prices seem to be falling.


    Inflation is still high on many essential things, and it continues to be the biggest hit to poor Americans. It acts like an indirect tax on them.

     
    Unfortunately, most of this inflation we are experiencing is caused by supply-side factors, which are difficult to fix in the short run.

    Policy implication

    The government can only focus on controlling the demand aspect of inflation in the short run. As a result, the Fed will continue to tighten the monetary policy and raise interest rates until inflation reaches around 2%

    The federal reserve has been trying to control inflation using interest rate hikes to slow the demand in the economy.


    To learn more about inflation, how it is calculated, and the factors that cause it, please see my post here.

  • How does people’s expectation about inflation affect the actual inflation?

    What people like you and me think about inflation directly impacts the actual inflation rate. So, if we think inflation will be high in the coming months, it will most likely be. In this post, I will explain how this phenomenon works.

    If we expect that overall prices are going to rise in the coming months, we may buy more things now, rather than in the future. If a lot of people do that, this increases the demand for goods and services.

    High inflation is directly linked to a higher demand that is not immediately matched by an increase in supply. As a result, firms increase the prices of goods and services when there is more demand. This enables them to make more profit. As a result, we see increased prices passed on to the consumers causing higher inflation.

    On the other hand, if people expect prices to fall in the future, they may delay spending now to get a better deal. This will result in a decrease in demand for goods and services and businesses will end up lowering prices to clear up their stock.

    So, now we understand how inflation expectations affect actual inflation. If you want to know more about inflation and how it is calculated, you can refer to my post here.

    What is the current inflation expectation in the U.S.?

    After suffering from really high inflation close to 8%-9% for over half a year, we foresee some good news. A survey conducted by the Fed reserve bank of New York shows a decrease in these expectations.

    People in the U.S. feel that one and three-year-ahead inflation are now going to be 5.7 % and 2.8 % respectively.

    These are clearly lower than 6.2 % and 3.2 % in June for one and three years ahead inflation rates respectively. In the figure from the Federal Reserve of New York website, you can see how there is a decline in the curve of the expected inflation rate towards the end. This is the survey done in the month of August 2022 about what people think inflation may look like for 1 year and 3 years.

    It shows that people’s expectations are consistent with what the Fed is trying to achieve. By raising interest rates, the Fed is trying to slow down the demand in the U.S. When borrowing becomes expensive, people generally tend to borrow less for things like cars, mortgages, etc.

    In their September 20 meeting, the Fed is most likely going to raise the key federal funds rate by another 75 basis points. The Fed has been raising interest rates to fight the high inflation in the U.S for the last 6 months. Central banks in a lot of other countries fighting inflation have been doing the same.

    To learn more about the role of the central bank, stay tuned for my next post.

  • Did inflation fall to 0% in the US in July?

    Yesterday, in the news, I read President Biden saying the US had 0% inflation in July. The BLS, the official source of inflation numbers, reported no change in the CPI (Consumer price index) from June.

    So did inflation suddenly disappear? Well, it depends on how you measure it.

    Sometimes, the way politicians report some facts could give us misleading conclusions. So, the economist in me had to write something today to help my readers understand it better.

    How do we measure inflation?

    As I said above, the official inflation number in the US comes from the BLS every month. BLS calculates price inflation both monthly and annual.

    If you want to know more about inflation in simple words, you can read my previous posts. I described how we can calculate inflation using some simple examples. I also explained what policy measures the central bank takes to control inflation – my most favorite post.

    So was Biden lying when he said 0% inflation?

    There was indeed no general average price increase from June 2022 compared to July 2022. This meant a 0% monthly inflation.

    However, the year-to-year inflation ending July 2022, was 8.5%. This is still very high, compared to the average US inflation of around 2%. Inflation is the percentage price increase of a basket of goods and services people in the urban United States use. This is of course, over a specific period.

    But, the good news is that it was somewhat less than the June 2022-to-2021 inflation of 9.1%.

    A picture is worth a thousand words

    Here is a chart showing category-wise inflation. The food prices continued to rise. Few others, such as electricity, new vehicles, and shelter also rose.

    The main reason behind 0% monthly inflation was the falling gas prices. It offset the increase in food and shelter indexes. The lower gas prices finally come as a relief to millions of Americans. We have been experiencing a sharp rise in gas prices for a long time and wanted a break.

    Hopefully, Fed’s tight monetary policy will bring inflation down further in the coming months. But, there might be a cost to it- the possibility of a recession. As we say in economics, there is no free lunch. Let’s just hope that even if the R word happens, it is not significant.

  • Why did Fed raise interest rates again, making borrowing more expensive?

    Ending their two-day meeting, the Fed (central bank of the US) has once again raised interest rates. The reason for the hike is to control inflation. The United States Congress has given the Fed a dual responsibility – to achieve maximum employment and keep inflation around the rate of 2% over the longer run.

    The average consumer in the US has been feeling the burden of rising prices, especially since the start of this year, esp. in gas, housing (including rental), and food prices. The Consumer Price Index, which measures inflation in the US has been at an elevated level for quite some time. In their press release, as of July 13, 2022, the BLS published inflation at 9.1%.

    How does the interest rate affect inflation?

    Going back to today’s news, let’s understand how the interest rate mechanism works. The FOMC (Federal open markets committee) is responsible for determining the federal funds rate target range. This is the rate at which banks borrow from each other. The Fed doesn’t set this rate, but market forces determine it.

    The reason this rate is very important to us is through its linkages to other rates. This federal funds rate impacts all the other interest rates such as on credit cards, housing, auto, and education loans.

    How much did Fed raise interest rates?

    In today’s meeting, the Federal open market committee decided to raise the target range for the federal funds rate from 2.25% to 2.5%. This increase has moved the Federal funds rate to its highest level since December 2018. During their June 13, 2022 meeting, they increased the target range for the Federal funds rate to be 1.25% – 1.75%. You can see the graph of this rate over time here.

    So how does the Fed steer the federal funds rate?

    It uses “interest on reserves balance” as its main monetary policy tool for that. To understand it better, you can read my article here, which explains this in detail. When the Federal funds rate (borrowing costs of banks) is high, banks will pass on these added costs to their final consumers. These consumers include people like you and me, and businesses.

    In a nutshell

    The main idea behind this repeated increase in the interest rate is that expensive loans will discourage people from spending. When the cost of borrowing (interest rate) is high, general consumers (households) borrow less for a big purchase such as a car or a house. Similarly, businesses also invest less in the expansion of their plant, inventories, machinery, buildings, etc. All of this will reduce the demand for goods and services these businesses make and they will also hire fewer workers. And when the excess (increased) demand is lower, the prices will eventually start falling, which will control high inflation. Thus, interest rate hikes are the Fed’s main tool to control inflation.

    Inflation happens because of strong consumer demand, which supply can’t match. Supply bottlenecks with China during the Covid pandemic, Ukraine war, etc have all contributed to a weaker supply of many essential items we use every day. Since many of the supply chain issues will take a long time to fix, the Fed is trying to control the demand aspect of inflation. By raising interest rates, and making borrowing more expensive, the Fed is hoping to weaken Americans’ willingness to spend money and ultimately bring inflation close to its 2% target level.

  • What are our real earnings when we deposit money in our savings accounts?

    If I asked, “What’s the interest on your savings account?” many of you will tell me the interest rate that the bank is stating. However, you need to understand the difference between nominal and real interest rates.

    In this post, you will learn about the true return you get by saving your money in a bank.

    What is a nominal interest rate?

    When you deposit money in your savings account at the bank, you get something called nominal interest. So, if your savings account has a 2.5% interest rate, that is actually a nominal interest rate.

    A nominal interest rate is the interest rate banks and financial institutions give to you. It is the actual rate they will pay on your savings balance. This interest rate is not adjusted for inflation.

    Before we dig into real interest rates, we need to understand what inflation is and how it impacts the real return on savings.

    What is Inflation and how does it affect your actual return?

    Inflation is the general increase in the prices of everyday goods and services we use. It is important to note that the price of one item can go up and down, but the increase in any single item won’t qualify for inflation. Inflation happens when price rise for a majority of goods and services we use. In other words, inflation only happens when the average price level is going up. For example, when the prices of food, housing, gas, and other items we use, all rise for a while. I have written a detailed post on inflation in another post if you are interested.

    Real interest rate – the one that actually matters!

    If there is any inflation in an economy, money loses its value or purchasing power. So, the interest you earn from the bank won’t buy the same amount of things it could before the price rise. Thus, we need to calculate the real interest rate. This is the rate we get after subtracting the inflation rate from the nominal interest rate your bank quoted to you. So, the real interest rate r is

     r = nominal interest rate- Inflation rate

    This is called Fisher’s equation in economics, named after American economist Irving Fisher. He explained the difference between true or real interest from nominal interest.

    Thus, we will only earn interest income on our savings, when the real rate of interest is positive. If this number is positive, we haven’t lost money and actually gained some by keeping it in bank.

    Let’s learn this by an example. Think of a big balloon with some air. Here air is the money you deposited in your savings account (balloon). Now, let’s think of the “nominal interest” you earn on your savings as the rate you are blowing air in the balloon to make it bigger. But let’s suppose there is a hole in the balloon, which is making the air come out of it as well. This air coming out of the hole is representing inflation in an economy.

    If you’re blowing faster than the air that is coming out of the hole, your balloon will become bigger. And if your balloon is getting bigger, then purchasing power of your money in a savings account will grow over time. This is when you are earning interest in a real sense, and you will be able to buy more things.

    But if the hole is bigger, the air will come out faster than the air going in. This will cause your balloon size to decrease, which means your purchasing power will go down.

    So even if you are getting a nominal interest on your savings account from the bank, because of inflation, you will only be able to buy fewer things with that money in the future.

    So, the real interest rate could be positive, zero, or negative depending on whether the inflation rate is less, equal, or more than the nominal interest rate.

    If the real interest rate is zero or positive, then saving your money in a bank is still better than keeping it with you.

    When you keep money in your house, it certainly will depreciate by the rate of inflation. The only time keeping money in the house will help is when there is a deflation, which means the general price level is going down.

    In the chart below, you can see how inflation affects your true savings return.

    Does anyone benefit from stable inflation?

    Savers, borrowers, and lenders all benefit when the inflation level is stable and low (around 2%). For borrowers, it helps them pay off their loans because they are paying a little bit less in real terms.

    Banks know the target rate of inflation, so they keep their nominal lending rate of interest higher than that. This helps them get some real return on lending money.

    Similarly, for depositors, if inflation is stable, they get the real return as the excess of nominal return over the inflation rate.

    However, if inflation is more than the normal 2%, then both lenders and depositors will lose money.

    To learn about what measures the Fed takes to keep inflation stable at around 2%, please click here.

  • Gas prices are too high, but why?

    Both gasoline and diesel prices are still up. Drivers across the US and globally are feeling pain when they visit gas stations to pump gas. You can see that both gas and diesel prices have been trending up in each of the regions in the entire US from October 2021, with a steep rise after Russia started the Ukraine war. I got these charts from the US Energy Information Administration, which is the US official source of data for energy information.

    And since gasoline and diesel both are needed for the transportation of many goods, the increase in fuel prices has several linkages to other industries as well. In this image, taken from the US EIA website, you can see, that the national average for a gallon of gas in the United States was $4.11 and $5.12 for diesel as of April 2022.

    What has caused the continued rise in fuel prices?  

    In most simple terms, it is the imbalance between the supply and demand of crude oil. There is an increasing oil demand, while there is not enough supply. Gasoline and diesel both are made from crude oil. The petroleum refineries make gasoline and other petroleum products from crude oil.

    You might ask why the gas price is high in the US when it only imports a very small percent of crude oil from Russia. The answer to this lies in the fact that crude oil prices are set in the global market.


    In this chart, you can see the supply and demand imbalance.

    On the x-axis, we have the quantity of crude oil demanded and supplied and on the y-axis is the price of crude oil. For any commodity, an equilibrium price is set, where the upward-sloping supply curve and the downward-sloping demand curve intersect. That is the quantity that the producers are willing to supply and the quantity the consumers are willing to buy at a price that works for both.

    If the producers supply more than what consumers demand, then the price of that commodity will fall because there is excess supply. On the other hand, if demand for a commodity is more than what the producers can supply, it causes price to increase because there is excess demand and consumers are willing to pay more. In the case of oil price hike, the latter has happened. This has led to both a rise in price of crude oil and a lower equilibrium quantity of crude oil consumed and supplied. The above chart shows that as Q1 and P1.

    The economic sanctions put on Russia by the United States and the European Union in response to Russia’s invasion of Ukraine have had a shattering effect on the Russian oil supply to the world. Many countries have cut trade ties with Russia, leading to a lower supply from Russia. Even though, US has become the largest producer of crude oil. Russia is still one of the biggest crude oil producers in the world, so it has a significant influence on the total industry output in the global oil market.

    When Russian oil is not available to its full capacity, the world supply of crude oil has dramatically decreased. This has caused crude oil prices to rise significantly. During the early part of 2020, when the demand for transportation dropped significantly due to the lockdown, crude oil was at an average price of $39 a barrel. This was its lowest price since 2003.

    However, as the lockdown eased and economies returned to normal, there has been an increasing demand for crude oil. With people commuting to work again, traveling on vacation, and going out more, the demand for gasoline has resumed. While the suppliers are not able to increase the supply of crude oil, there is an increasing demand. The price of crude oil in the international market exploded to $139 before settling at $123 a barrel. Much of the inflation is due to a rapid rise in crude oil.

    Crude oil is used to produce gasoline, so fuel refining companies like Exxon, Chevron and others are passing the higher costs of production on to consumers by raising prices at the pump. This is the inflation caused by supply factors.

    Million dollar question in everyone’s mind is when will the fuel prices go back to normal?

    The sad news is that Economists don’t expect gas prices to fall anytime soon, unless war in Ukraine comes to an end and and some sort of order is restored in Europe. Until then, the world oil market will continue to struggle to provide an adequate supply to meet worldwide demand meaning that crude oil prices will remain high. This of course will keep prices inflated at the pump and drivers will struggle to fill their tanks.

    Additionally, as summer approaches, the demand for travel will continue to rise and the average cost of a gallon of gas might peak at $5. Many economists believe that even if supply issues are fixed and prices start to decline in the coming months, the average is still expected to remain over $4 nationally until at least November, as the adjustments take time.

    Going forward the best strategy for countries will be to keep extra reserves when the crude oil price is low. Investment in alternative energy sources will be the strategy for the future to withstand such supply shocks.

    If you want to know more about it, you can also refer to CNN’s article on June 1. Is it just a coincidence that a famous news channel published this article a few days after I did? It is not. This is just what everyone wants to know. https://www.cnn.com/2022/06/01/energy/record-gas-price-causes/index.html

  • What is causing the prices to rise the world over? Understanding inflation and its causes

    The most talked-about topic affecting everyone for now almost a year is inflation. Your money loses its purchasing power, you need more money to buy the same amount of goods and services you purchase or use. If you are hiding a lot of money under your mattress or in a safe place at home, trust me it’s a bad idea. You will only be able to buy fewer items with that in the future than now.

    The easiest way to define inflation to a layman is the sustained increase in the average prices of a basket of goods and services that we buy over a specific period. So, when there is inflation, the cost of living goes up. This becomes a real problem if your income doesn’t rise as quickly as inflation, then with your current income, you will only be able to buy less same stuff than before.

    The inflation rate is expressed as a percent change from the previous period. Below is the actual inflation rate in the US in the last 6 years. So if the annual inflation is 6%, it means on average, prices have risen 6% from the last year. As you can see, the inflation slope became steeper in 2020, after the pandemic hit the global economy.

    So, what causes inflation?

    This can happen in two ways: either through demand-pull factors or through cost-push factors.

    The quantity theory of money explains inflation caused by demand-pull factors.

    Demand-pull inflation

    This occurs when people have too much money and they want to buy more, whereas there is not enough supply to meet that demand. Or in other words, too much money is chasing too few goods. This usually happens when the economy is at (or very close to) full employment/full capacity. By full employment, we mean people who are looking for jobs can find one. Also, in this situation, the country’s GDP grows at a rate faster than its long-run trend rate. This happens when there is too much money in circulation. If the bank interest rates are too low, people, both households and businesses can borrow easily and as a result, can buy more goods and services than what the firms can supply. We call this phenomenon “too much money chasing too fewer goods”. Producers increase prices and profit because they can’t increase supply in the short run.

    Using the demand and supply curves, I explain this idea. You see that the demand curve always slopes downwards, meaning people always want to buy more items at a lower price, Also, note that the supply curve faces upward, which means the firms producing those goods would like to supply more at higher prices, With the same assumption that is everything else staying the same. Equilibrium price and quantity are established at P and Q where the supply and the demand curve meet. We call them P and Q.

    To explain this graphically, let’s look at the demand and supply model. On y axis, we denote the general price level, since inflation reflects general price level rise. On x asis we will show the real quantity of goods and services or real GDP. In the graph below, demand will be aggregate demand as this is represents demand from the whole economy. This demand is also downward sloping curve, as the demand for any normal item will be. It shows people overall demand lower quantities when the prices are high and demand more quantities when the prices are low. With the same assumption that nothing else is affecting the demand and everything else stays constant. The aggregate supply curve always is upward sloping meaning producers are willing to supply more at higher prices, so they can get more profits and vice versa. With the assumption that everything else is staying the same, the price level and quantity are set where aggregate demand meets aggregate supply at e. This is the price level consumers are willing to pay and producers are willing to accept and is denoted by P. And the corresponding quantity supplied and demanded is denoted by real production of goods and services or real GDP at Q. Economist call this equilibrium price level and quantity.

    If there is excess money in circulation in the economy, people can afford to buy more, so for each price level, there is an increased demand. Or in other words, too much money is chasing fewer goods.

    In our graph, you will see the aggregate demand shifting to the right or upwards. Now we get the new equilibrium e1, where the new demand and supply meet, and you can see that the new price and the quantity both have increased to P1 and Q1. This happens in the short run when producers don’t increase the supply of goods and services but instead, charge more prices because of increased demand.

    Over time when producers can increase their production, the supply will be increased. In the graph below, this will mean the supply curve shifts to the right. So we can see at the new equilibrium, the prices will fall back. How much the prices fall, will depend on how much adjustment (increase) in supply is made in the long run. If the supply is adjusted enough to meet the increasing demand, then the prices will back to level P and the quantity demanded and supplied will be even higher, as shown at Q2. And the increase in the general price level is controlled.

    Cost-push inflation

    When the supply of the good is reduced due to an increase in the price of inputs in making that good or service. Supply shocks can cause cost-push inflation. Supply can fall due to a variety of reasons, such as if the cost of inputs for production goes up or if there is a natural calamity. Most recently after the pandemic, lockdown jams in major ports have contributed to a slowdown in the supply of a lot of items.

    In the graph above, supply shock has pushed the price up to P1, and Quantity is reduced to Q1.

    How to calculate the inflation rate?

    Inflation is expressed as a % change in the price level of a market basket of goods and services over a period. To understand how inflation is calculated, let’s start with a very simple economy, where people only bought and consumed 3 items – bread, internet, clothing, and a house.  You spend 30% of your yearly income on bread, 10% on clothing, 10% on the internet and 50% on renting an apartment. Then let’s assume the price of bread in year 1 is $2 and the price of internet is $45, price of clothing is $10, and rent is $25000. The price of bread in the year 2022 goes up to $2.5, price of internet becomes $60, price of clothing increases to $15 and rent in year 2 is $30000. We also, in the table below, list the proportion of income or weight they spend on all these items. The sum of these weights needs to add to 100%.

    Inflation from year 1 to year 2 is calculated as (CPI2 – CPI1)/ CPI1 * 100 where CPI1 is the price level in year 1 and CPI2 is the price level in year 2. CPI is a weighted average price of many day-to-day goods and services that a typical American person living in a city buys at a particular time. Don’t be frightened by the term “weighted average”. Weight here refers to the importance of spending on a particular item compared to total expenditure. It simply means more weight is given to goods and services where you spend more money of your income. This could be because you buy that thing more often like, daily or you spend a lot of money buying it.

    If we change the weight of some things from table 1, even with the same absolute increase in price, the inflation % will change. As you can see in table 2, it became 20.02%.

    If the change in prices is more compared to that from table 1, even with the same % of weight, the inflation % will be greater.

    BLS calculates and publishes inflation in the US

    However, our consumption is not just restricted to these four items. In fact, a typical American urban consumer consumes a wide variety of goods, known as the market basket of goods.

    In the US, the Bureau of Labor Statistics calculates something called the CPI (consumer price index). To collect the monthly price data, BLS-trained representatives make personal visits, phone calls, and get online surveys to collect data on what goods and services American people are buying.

    The price and weight info are essentially based on a survey of people of what proportion of their income people spend on a given good or service. BLS tries to calculate the prices of the same basket of goods and services. Now, here some people will argue that what if people don’t consume the same things after some years? That is a subject of further investigation, but the general idea is that the BLS tries to calculate the prices of the same goods and services consumed by the average person over a period for which it is calculating the inflation rate.

    If you are interested, you can check the detailed report here with relative weights and price changes by category. https://www.bls.gov/news.release/pdf/cpi.pdf

    Since CPI is a sample of retail prices and does not cover the complete universe of all prices, it is subject to some errors. However, that sampling error is not statistically significant to change the calculation by a lot. You will have to get into statistics class to understand the more technical aspects of what is considered a significant error or not, but for now, you can understand the error possibility is very small, so it is a reliable indicator of how the prices are behaving in general.

    But when do we need to worry about inflation?

    Well, some inflation is not bad and is considered healthy for the economy. Since our salary/wages have also increased over time and in most cases, some general rise in price level doesn’t hurt our purchasing power.

    The BLS calculates this measure at 1-month, 3 months, 6 months, and 1-year intervals, and publishes that data. Over the last 40 years, we have seen this inflation % on average staying close to 2% annually. That means the same basket of items that you buy is 2% more expensive from 1 year to the next. The goal of monetary policy is to keep the inflation number close to this target-rate.

    But in some countries like Zimbabwe and Venezuela, the prices had risen to a level making it very difficult for people to hold on to their currency. That situation where general prices rise at a rate of 50% per month is called hyperinflation. People know that they won’t be able to buy the same set of goods with that amount of money, even the very next day, so they demand more wages to cope with it. This, in turn, causes firms to pass this burden by increasing the prices of goods and services they provide. This, in turn, causes an increased demand for higher wages and the spiral continues. This is called the wage-price spiral. This can cause a severe crisis in any country.

    To know more about how the Fed uses monetary policy to control inflation, click here.