Also, if you require one payment per period, as in most of our calculations, you need to adjust the payments per year. Adjust the number of digits displayed. Use at least four places to the right of the decimal place for all calculations. When working with interest rates, it is very important to use more than two decimal places. You can set your calculator's display program to display a specified number of decimal places.
Most calculations require one interest compounding per period.
Since this is the case, we need to make sure that the calculator program we are using considers only one compounding per period. Many calculators allow you to key in a value and then key in how many times that value is repeated. Clear the calculator's registers after each problem. Clear your registers before starting a new calculation. Check to see whether your calculator is programmed to assume cash flows at the end of the period or the beginning of the period.