## Excel NPV Function

The Excel NPV function is used to calculate the present value of unequal cash flows in time value of money calculations.

To calculate the net present value of a project, the original investment at the start of the project needs to be deducted from the answer provided by the Excel NPV function.

Excel NPV Function November 6th, 2016

## Excel NPER Function

The Excel NPER function is one of many Excel financial functions, and can be used to calculate the number of periods for a lump sum, annuity or annuity due to grow to a future value. In addition the function can also be used to calculate the number of periods it takes for a loan to be repaid.

Excel NPER Function November 6th, 2016

## Profitability Index Calculation

The profitability index (PI) of a series of cash flows is found by calculating the present value of all the cash flows from a project (PV) and dividing the value by the initial investment (I). The profitability index is sometimes referred to as the value investment ratio.

Profitability Index Calculation July 6th, 2017

## Effective Annual Rate Formula

The effective interest rate formula calculates the rate of interest for a year based on a nominal rate (i) compounded a number of times a year (m). The formula for annual interest rate is sometimes referred to as the annual equivalent rate formula or AER formula.

Effective Annual Rate Formula November 6th, 2016

## Present Value of a Lump Sum

The concept of the present value of lump sum is the starting point for many time value of money calculations including the present value of an annuity, and net present value calculations.

Present Value of a Lump Sum November 6th, 2016

## Future Value of a Lump Sum

The concept of the future value of lump sum is the starting point for all time value of money calculations.

If a lump sum (PV) is invested and earns interest at a rate (i), then over time (n), the lump sum will grow into a larger sum (FV).

Future Value of a Lump Sum November 6th, 2016

## Doubling Time Formula

The doubling time equation calculates the number of periods it takes to double the value of an investment at a given discount rate.

Doubling Time Formula November 6th, 2016

## The Rule of 72

If money is invested in an account paying compound interest, the finance rule of 72 is a quick way to estimate the time it will take for the investment to double in value.

The Rule of 72 November 6th, 2016

## Lump Sum Number of Periods Formula

The lump sum number of periods formula calculates the number of periods it takes to compound a lump sum from its present value to a future value at a given discount rate.

Lump Sum Number of Periods Formula November 6th, 2016

## Lump Sum Discount Rate Formula

The lump sum discount rate formula is used to calculate the discount rate (i) needed to compound a lump sum from its present value (PV) to a future value (FV) over a given number of periods (n).

Lump Sum Discount Rate Formula December 7th, 2017

## Future Value of a Lump Sum Formula

The future value of lump sum formula is used to calculate what a cash lump sum received today will be worth in the future .

Future Value of a Lump Sum Formula November 6th, 2016

## Present Value of a Lump Sum Formula

The present value of lump sum formula is used to calculate what a cash lump sum received in the future is worth today.

Present Value of a Lump Sum Formula November 6th, 2016

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