www.reference.com/article/calculate-real-interest-rates-1d66a0a3835efaae

Real interest rate is calculated by adjusting for the effects of inflation when compared to the nominal interest rate. The calculation formula is simple, as it only requires subtracting the rate of inflation from the nominal interest rate. The value left after subtraction is the real interest rate.

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To calculate interest, multiply the periodic interest rate by the principle amount. For example, if you borrowed $1000 with an interest rate of 10 percent, in a year your interest paid is $100.

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A tax interest calculator determines the amount of interest owed on taxes that are paid late, as seen on the New York State Department of Taxation and Finance website. Several state tax websites, including New York and Pennsylvania, provide tax interest calculators, as do third-party services.

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The Annual Percentage Rate for mortgage interest is calculated in two steps, according to Bankrate. First, solve for the APR payment amount. This number will be different from the actual payment amount. Next, determine what interest rate is required to get the APR payment amount.

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An interest rate is the total percentage paid by the borrower on a loan. It can also be the difference between the money paid back and the money borrowed. The interest rate is what a lender charges a borrower for taking a loan and is also used to determine the rate paid on money deposited in savings

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Target heart rate calculators are tools that are used to determine heart rate ranges for physical exercise, according to Active.com. By accounting for age and exertion level, these calculators give users a good idea of how hard they should be pushing themselves while exercising.

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Energy rates are calculated by adding the base cost of the energy itself and the cost of transporting the energy to the end user. In addition, companies calculate in the costs for weather-related repairs and the expense of maintaining the energy-delivery infrastructure. The time of day also impacts

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Interest expense is calculated as the interest rate multiplied by the amount of the outstanding principal of the debt. Defined by Investopedia, interest expense is the cost incurred by an entity on borrowed funds.

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Banks, currency traders, tourists, and others use exchange rate calculators to determine how much of one currency they can buy with another currency based on current market conditions. Exchange rate calculators are often referred to as currency calculators. X-rates.com maintains a currency calculato

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Loan interest rates can be calculated with a loan amortization calculator and by knowing whether interest rates are fixed or variable, according to About.com. These methods can help borrowers understand their monthly payments, how much of the payment consists of interest, and how much future payment