How Central Banks Affect Interest Rates (2024)

The central bankof the United States—the Federal Reserve (the Fed)—is tasked with maintaining a certain level of stability within the country's financial system. Specific tools are afforded to the Fed that allow for changes to broad monetary policies intended to implement the government's planned fiscal policy.

These include the management and oversight of the production and distribution of the nation's currency, the sharing of information and statistics with the public, and the promotion of economic and employment growth through the implementation of changes to the discount rate.

The most influential economic tool the central bank has under its control is the ability to increase or decrease the discount rate. Shifts in this crucial interest rate have a drastic effect on the building blocks of macroeconomics, such as consumer spending and borrowing.

Key Takeaways

  • The Fed sets target interest rates at which banks lend to each other overnight in order to maintain reserve requirements—this is known as the fed funds rate.
  • The Fed also sets the discount rate, the interest rate at which banks can borrow directly from the central bank.
  • If the Fed raises interest rates, it increases the cost of borrowing, making both credit and investment more expensive. This can be done to slow an overheated economy.
  • If the Fed lowers rates, it makes borrowing cheaper, which encourages spending on credit and investment. This can be done to help stimulate a stagnant economy.

Overnight Lending and Bank Reserves

Banks are required by the Fed to have a minimum amount of reserves on hand, which is currently set at 0% in response to the 2020 crisis. Previously, the rate was set at 10%. This meant that a bank with $1 million on deposit had to maintain at least $100,000 on reserve and was free to lend out the remaining $900,000 to borrowers or other banks. Each day, bank reserves are depleted or augmented as customers carry out day-to-day banking and make payments, withdrawals, and deposits.

At the end of the business day, if more withdrawals had been made than deposits, the bank may have found itself with too little reserves, say just $50,000 left, and would have been below regulatory requirements. It would then have had to borrow the other $50,000 overnight as a short-term loan.

If another bank saw more deposits than outflows, it may have found itself with perhaps $150,000 available, and so could lend $50,000 to the first bank. It would prefer to lend those excess reserves and earn a small amount of income on it rather than have it sit idly as cash earning zero yield.

The rate at which banks lend to each other overnight is called the federal funds rate (or fed funds rate for short) and is set by the supply and demand in the market for such short-term reserves loans.

If there are no banks with reserves willing to lend to those in need, that bank can instead borrow directly from the Fed, at a rate known as the discount rate.

The Fed Funds Rate and Discount Rate

For banks and depositories, the discount rate is the interest rate assessed on short-term loans acquired from regional central banks. In other words, the discount rate is the interest rate at which banks can borrow from the Fed directly.

Financing received through federal lending is most commonly used to shore up short-term liquidity needs for the borrowing financial institution; as such, loans are extended only for an overnight term. The discount rate can be interpreted as the cost of borrowing from the Fed.

Remember, the interest rate on the interbank overnight borrowing of reserves is called the "fed funds rate." It adjusts to balance the supply of and demand for reserves. For example, if the supply of reserves in the fed funds market is greater than the demand, then the funds rate falls, and if the supply of reserves is less than the demand, the funds rate rises.

The Fed began raising interest rates to combat rising inflation that began in 2021 and continued into 2022. The Fed raised the target fed funds rate range from 0.25% to 0.50% in March 2022 all the way to 5.25% to 5.50% in July 2023.

The Fed sets a target interest rate for the fed funds rate, but that actual rate will vary with the supply and demand for overnight reserves. In July 2023, the fed funds target rate was set at between 5.25% and 5.50%, where it currently remains as of Aug. 2023. This rate was set at the July meeting of the Federal Open Market Committee (FOMC), which sets the target rate.

The Fed offers discount rates for three different types of credit: primary credit, secondary credit, and seasonal credit. As of Aug. 2023, these discount rates were 5.50%, 6.00%, and 5.40%, respectively.

The discount rate is generally set higher than the federal funds rate target because the Fed prefers that banks borrow from each other so that they continually monitor each other for credit risk.

As a result, in most circ*mstances, the amount of discount lending under the discount window facility is very small.Instead, it is intended to be a backup source of liquidity for sound banks so that the federal funds rate never rises too far above its target—it puts a ceiling onthe fed funds rate.

Decreasing Interest Rates

When the Fed makes a change to either the fed funds rate or the discount rate, economic activity either increases or decreases depending on the intended outcome of the change. When the nation's economy is stagnant or slow, the Federal Reserve may enact its power to reduce the discount rate in an effort to make borrowing more affordable for member banks.

When banks can borrow funds from the Fed at a less expensive rate, they are able to pass the savings to banking customers through lower interest rates charged on personal, auto, or mortgage loans. This creates an economic environment that encourages consumer borrowing and ultimately leads to an increase in consumer spendingwhilerates are low.

Although a reduction in the discount rate positively affects interest rates for consumers wishing to borrow from banks, consumers experience a reduction in interest rates on savings vehicles as well. This may discourage long-term savings in safe investment options such as certificates of deposit (CDs) or money market savings accounts.

Increasing Interest Rates

When the economy is growing at a rate that may lead to hyperinflation, the Fed may increase interest rates. When member banks cannot borrow from the central bank at an interest rate that is cost-effective, lending to the consuming public may be tightened until interest rates are reduced again. An increase in the discount rate has a direct impact on the interest rate charged to consumers for lending products, and consumer spending shrinks when this tactic is implemented.

Although lending is not as attractive to banks or consumers when the discount rate is increased, consumers are more likely to receive more attractive interest rates on low-risk savings vehicles when this strategy is set in motion.

What Happens When the Central Bank Raises Interest Rates?

When a central bank raises interest rates, its goal is to slow down the economy. Raising interest rates will increase the cost of borrowing because loans now come with higher interest rates. This makes the purchase of goods and services on credit more expensive. Consumers will decrease their spending, resulting in a slowdown of the economy.

How Do Rising Interest Rates Stop Inflation?

Rising interest rates make the cost of buying goods and services more expensive because the cost of borrowing money is more expensive due to higher interest rates on loans. When the cost of goods and services is more expensive, this discourages people from spending, reducing the demand for goods and services. According to the law of supply and demand, when demand falls, prices of goods and services fall as well. When prices fall, inflation comes down and eventually stops.

Are Interest Rates Controlled by the Central Bank?

Central banks control short-term interest rates, which in turn impact all other interest rates. Central banks buy and sell securities, known as open market operations, to banks in order to affect their reserves, which determines how they charge interest.

The Bottom Line

The Fed, like all central banks, uses interest rates to manage the macroeconomy. Raising rates makes borrowing more expensive and slows down economic growth while cutting rates encourages borrowing and investment on cheaper credit. All of this ripples out from the overnight lending rate that banks must utilize in order to maintain their required reserves of cash—which is also set by the Fed.

How Central Banks Affect Interest Rates (2024)

FAQs

How Central Banks Affect Interest Rates? ›

Central banks control short-term interest rates, which in turn impact all other interest rates. Central banks buy and sell securities, known as open market operations, to banks in order to affect their reserves, which determines how they charge interest.

How a central bank can influence interest rates? ›

Central banks conduct monetary policy by adjusting the supply of money, usually through buying or selling securities in the open market. Open market operations affect short-term interest rates, which in turn influence longer-term rates and economic activity.

Why do central banks raise lower interest rates? ›

Central banks often adjust interest rates according to inflation. Raising and lowering interest rates may help manage inflationary pressures on the economy.

Are interest rates set by central banks? ›

Central banks do take and implement decisions about short-term interest rates. With few exceptions, they are able to make those decisions effective in the markets in which they operate.

What happens when the central bank the Fed lowers interest rates? ›

So the end result of lowering interest rates is fewer savings, more money supply, more spending, and higher overall economic activity – a good side effect. On the other hand, lowering interest rates also tend to increase inflation.

How does the Fed actually raise interest rates? ›

The Fed used “open market operations” to pursue that target; that is, by selling (purchasing) securities, the Fed reduced (increased) the supply of bank reserves, thus leading to a higher (lower) federal funds rate.

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