Interest Rates - Money and the Economey

What Is an Interest Rate?

The interest rate is the amount a lender charges a borrower and is a percentage of the principal loaned. The interest rate on a loan is typically noted annually, known as the annual percentage rate (APR).

An interest rate can also apply to the amount earned at a bank or credit union from a savings account or certificate of deposit (CD). Annual percentage yield (APY) is the interest earned on these deposit accounts.

KEY TAKEAWAYS

  • The interest rate is the amount charged on top of the principal by a lender to a borrower for the use of assets.
  • An interest rate also applies to the amount earned from a bank or credit union deposit account.
  • Most mortgages use simple interest. However, some loans use compound interest, which is applied to the principal and the accumulated interest of previous periods.
  • A borrower considered low risk by the lender will have a lower interest rate. A loan that is considered high-risk will have a higher interest rate.
  • The APY is the interest rate earned at a bank or credit union from a savings account or CD. Savings accounts, and CDs use compounded interest.

What do higher interest rates mean for you?

Understanding Interest Rates

Interest is essentially a charge to the borrower for using an asset. Assets borrowed can include cash, consumer goods, vehicles, and property. Because of this, an interest rate can be thought of as the “cost of money” – higher interest rates make borrowing the same amount of money more expensive.

Interest rates thus apply to most lending or borrowing transactions. Individuals borrow money to purchase homes, fund projects, launch or fund businesses, or pay for college tuition. Businesses take out loans to fund capital projects and expand their operations by purchasing fixed and long-term assets such as land, buildings, and machinery. Borrowed money is repaid either in a lump sum by a pre-determined date or in periodic installments.

The interest rate is applied to the principal, which is the loan amount. The interest rate is the borrower’s debt cost and the lender’s rate of return. The money to be repaid is usually more than the borrowed amount since lenders require compensation for the loss of use of the money during the loan period. The lender could have invested the funds during that period instead of providing a loan, which would have generated income from the asset. The difference between the total repayment sum and the original loan is the interest charged.

When the borrower is considered to be low risk by the lender, the borrower will usually be charged a lower interest rate. If the borrower is considered high-risk, their interest rate will be higher, resulting in a higher-cost loan.

KEY TAKEAWAYS

  • Risk is typically assessed when a lender looks at a potential borrower’s credit score, so it’s essential to have an excellent one if you want to qualify for the best loans.
  • The task force was started in 1989 in Paris, where it is still called the Groupe d’action Financière.
  • Almost all developed countries support or are members of the FATF.

Simple Interest Rate

If you take out a $300,000 loan from the bank and the loan agreement stipulates that the interest rate on the loan is 4% simple interest, this means that you will have to pay the bank the original loan amount of $300,000 + (4% x $300,000) = $300,000 + $12,000 = $312,000.

The example above was calculated based on the annual simple interest formula, which is:

Simple interest = principal X interest rate X time

The individual that took out a loan will have to pay $12,000 in interest at the end of the year, assuming it was only a one-year lending agreement. If the term of the loan were a 30-year mortgage, the interest payment would be:

Simple interest = $300,000 X 4% X 30 = $360,000

A simple interest rate of 4% annually translates into an annual interest payment of $12,000. After 30 years, the borrower would have made $12,000 x 30 years = $360,000 in interest payments, which explains how banks make their money.

Compound Interest Rate

Some lenders prefer the compound interest method, meaning the borrower pays even more in interest. Compound interest also called interest on interest, is applied to the principal and the accumulated interest made during previous periods. The bank assumes that at the end of the first year, the borrower owes the principal plus interest for that year. The bank also assumes that at the end of the second year, the borrower owes the principal plus the interest for the first year plus the interest on interest for the first year.

The interest owed when compounding is higher than the interest owed using the simple interest method. The interest is charged monthly on the principal, including accrued interest from the previous months. For shorter time frames, the interest calculation will be similar for both methods. However, as the lending time increases, the disparity between the two types of interest calculations grows.

Using the example above, at the end of 30 years, the total owed in interest is almost $700,000 on a $300,000 loan with a 4% interest rate.

The following formula can be used to calculate compound interest:

Compound interest = p X [(1 + interest rate)n − 1]
where:
p = principal
n = number of compounding periods​

Compound Interest and Savings Accounts

When you save money using a savings account, compound interest is favorable. The interest earned on these accounts is compounded and compensates the account holder for allowing the bank to use the deposited funds.

If, for example, you deposit $500,000 into a high-yield savings account, the bank can take $300,000 of these funds to use as a mortgage loan. The bank pays you 1% interest into the account annually to compensate you. So, while the bank takes 4% from the borrower, it gives 1% to the account holder, netting it 3% in interest. In effect, savers lend the bank money, which, in turn, provides funds to borrowers in return for interest.

The snowballing effect of compounding interest rates, even when rates are at rock bottom, can help you build wealth over time.

Borrower’s Cost of Debt

While interest rates represent interest income to the lender, they constitute a cost of debt to the borrower. Companies weigh the cost of borrowing against the cost of equity, such as dividend payments, to determine which funding source will be the least expensive. Since most companies fund their capital by either taking on debt and/or issuing equity, the cost of the capital is evaluated to achieve an optimal capital structure.

APR vs. APY

Interest rates on consumer loans are typically quoted as the annual percentage rate (APR). This is the rate of return that lenders demand for the ability to borrow their money. For example, the interest rate on credit cards is quoted as an APR. In our example above, 4% is the APR for the mortgage or borrower. The APR does not consider compounded interest for the year.

The annual percentage yield (APY) is the interest rate that is earned at a bank or credit union from a savings account or CD. This interest rate takes compounding into account.

How Are Interest Rates Determined?

Several factors, such as the state of the economy, determine the interest rate banks charge. A country’s central bank (e.g., the Federal Reserve in the U.S.) sets each bank’s interest rate to determine its offer’s APR range. When the central bank sets interest rates at a high level, the cost of debt rises. When the cost of debt is high, it discourages people from borrowing and slows consumer demand. Also, interest rates tend to rise with inflation.1

To combat inflation, banks may set higher reserve requirements, a tight money supply ensues, or there is greater demand for credit. In a high-interest-rate economy, people save their money since they receive more from the savings rate. The stock market suffers since investors would instead take advantage of the higher rate from savings than invest in the stock market with lower returns. Businesses also have limited access to capital funding through debt, which leads to economic contraction.

Economies are often stimulated during periods of low-interest rates because borrowers have access to loans at inexpensive rates. Since interest rates on savings are low, businesses and individuals are more likely to spend and purchase riskier investment vehicles such as stocks. This spending fuels the economy and provides an injection to capital markets leading to economic expansion. While governments prefer lower interest rates, they eventually lead to market disequilibrium where demand exceeds supply causing inflation.

5.31%

The average interest rate on a 30-year fixed-rate mortgage in mid-2022.  This is up from 2.89% just one year earlier.

Interest Rates and Discrimination

Despite laws, such as the Equal Credit Opportunity Act (ECOA), that prohibit discriminatory lending practices, systemic racism prevails in the U.S. Homebuyers in predominantly Black communities are offered mortgages with higher rates than homebuyers in white communities, according to a Realtor.com report published in July 2020. Its 2018 and 2019 mortgage data analysis found that the higher rates added almost $10,000 of interest over the life of a typical 30-year fixed-rate loan.

In July 2020, the Consumer Financial Protection Bureau (CFPB), which enforces the ECOA, issued a Request for Information seeking public comments to identify opportunities for improving what ECOA does to ensure nondiscriminatory access to credit. “Clear standards help protect African Americans and other minorities, but the CFPB must back them up with action to make sure lenders and others follow the law,” stated Kathleen L. Kraninger, director of the agency.4

Why Are Interest Rates on 30-year Loans Higher than 15-year Loans?

Interest rates are a function of the risk of default and opportunity cost. Longer-dated loans and debts are inherently riskier, as there is more time during which the borrower can default. At the same time, the opportunity cost is larger over extended periods when that principal is tied up and cannot be used for any other purpose.

How Does the Fed Use Interest Rates in the Economy?

The Federal Reserve and other central banks worldwide use interest rates as a monetary policy tool. By increasing the cost of borrowing among commercial banks, the central bank can influence many other interest rates, such as those on personal loans, business loans, and mortgages. This makes borrowing more expensive, lowering the demand for money and cooling off a hot economy. Lowering interest rates makes money easier to borrow, stimulating spending and investment.

Why Do Bond Prices React Inversely to Interest Rate Changes?

A bond is a debt instrument that typically pays a fixed interest rate over its lifetime. Say that prevailing interest rates are 5%. If a bond is priced at par = $1,000 and has an interest rate (coupon) of 5%, it will pay $50 a year to bondholders. If interest rates rise to 10%, new bonds issued will pay double – i.e., $100 per $1,000 in face value. An existing bond that only pays $50 will have to sell at a steep discount for somebody to want to buy it. Likewise, if interest rates drop to 1%, new bonds will only pay $10 per $1,000 in face value. Hence, a bond that pays $50 will be in high demand, and its price will be bid up relatively high.


Note: ZPEnterprises is not a licensed investor/financial advisor, but we are trying to share awareness of financial topics. Please do further research and work with a licensed financial advisor.


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