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The effective interest rate (EIR), effective annual interest rate, annual equivalent rate (AER) or simply effective rate is the percentage of interest on a loan or financial product if compound interest accumulates in periods different than a year. [1] It is the compound interest payable annually in arrears, based on the nominal interest rate ...
The term annual percentage rate of charge (APR), [1] [2] corresponding sometimes to a nominal APR and sometimes to an effective APR (EAPR), [3] is the interest rate for a whole year (annualized), rather than just a monthly fee/rate, as applied on a loan, mortgage loan, credit card, [4] etc. It is a finance charge expressed as an annual rate.
For instance, if a loan offers a 4% nominal interest rate and inflation is 2%, the real interest rate is approximately 2%. The world of finance has a somewhat different definition.
The effective interest rate is always calculated as if compounded annually. The effective rate is calculated in the following way, where r is the effective rate, i the nominal rate (as a decimal, e.g. 12% = 0.12), and n the number of compounding periods per year (for example, 12 for monthly compounding):
For example, if the inflation rate is 5%, on a one-year loan of $1,000 with an 8% nominal interest rate the real interest rate would be 8% minus 5% or 3%. The real interest rate will usually be ...
The annual effective discount rate expresses the amount of interest paid or earned as a percentage of the balance at the end of the annual period. It is related to but slightly smaller than the effective rate of interest , which expresses the amount of interest as a percentage of the balance at the start of the period.
Next, use an effective tax rate calculator to divide your tax liability by your total income. For example, if you end up owing $4,800 in taxes on a total income of $60,000, your effective tax rate ...
which is the rate of change with time of the natural logarithm of the accumulation function. ... The effective annual percentage rate at any time is: = ...