R is the rate, or annual rate of interest, expressed as a decimal. If the interest rate is 2.5%, r is 0.025. n is the number of times that interest is compounded per period.

Calculating the monthly interest cost on a student loan is relatively simple. To start, divide the loan’s annual interest rate by the number of days in a year (i.e., 365), then multiply the ...

To calculate interest, you need to know variables such as interest rate, principal loan amount and loan term. So if you had 4% interest on a $100,000 mortgage loan, and your loan term was 30 years ...

Calculating an interest rate. To calculate an interest rate, you'll need a few pieces of information: The interest expense, which you can find on a company's income statement.

For example, if you made a one-time deposit of $10,000 into a savings account that paid a simple interest rate of 2.00% annually, you would earn a flat $200 each year your $10,000 remains in the ...

If you enter your purchase price, down payment, mortgage interest rate, and loan length into the Investopedia Mortgage Calculator, you will find that your monthly payments to the lender in this ...