### Net Present Value Calculator

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### What is Net Present Value (NPV)?

Net Present value (NPV) is a financial calculation used when determining the time value of money to determine the “present day value” of a series of financial streams.

At its core, it is a combination of a number of different Future Value (FV) calculations that take place at different times.

As this calculator is structured to parallel the results of a financial calculator, inputs and outputs will be similar – for example, a negative present value (or payment) means an outflow as opposed to a directly negative number.

### How is the Net Present Value calculated?

Net Present Value is a combination of different future values from different times, all which are put into one larger present value.

The calculator is using a present value calculation for each different future value to bring the total amount to one date.

### What is Present Value?

Present Value (PV) is the total value at the beginning of the time period.

### What is Future Value?

Future Value (FV) is the total value at the end of the time period.

### What are periods?

Periods are the number of times that compounding (and payments) take place.

### What is the rate?

The rate is the amount of interest earned per compounding period.

### What is Payment (PMT)?

A payment is an amount either deposited or withdrawn at each compounding period.
A negative number designates an amount that is deposited, while a positive one withdrawn. For example, if $100 is deposited each compounding period, it would be entered as '-100', while if $75 was payed out each compounding period, it would be entered as '75'.

### What is Payments at start or end of period?

A payment at the beginning of a period would mean that the payment (or deposit) occurs at the beginning of each period.
A payment at the end of a period would mean that the payment (or deposit) occurs at the end of each period.

### Sources and External Resources

### More Time Value of Money Calculators