When calculating a declining ... the same annual time frame. Microsoft Excel allows you to set up a formula without having to manually crunch the numbers. The Excel Formula for Wages & Overtime.

The formula for calculating PV in Excel is: The inputs for the present value (PV) formula in Excel include the following: RATE = Interest rate per period NPER = Number of payment periods PMT ...

Since each date is really just a number stored in Excel, to compute the midpoint of two dates you would use the same mathematical formulas you would use to calculate the midpoint of two numbers ...