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`SPPW = (1 + "i" %)^- "n" `

Enter a value for all fields

The **Single Payment Present Worth (SPPW)** calculator computes the Single Payment Present Worth factor based on the interest rate and number of cash flow periods.

**INSTRUCTIONS:** Enter the following:

**i%**- interest rate entered as a percentage; i.e., enter 4.7 for a 4.7% interest rate**n**- number of cash flow periods

**Single Payment Present Worth (SPPW):** The calculator returns the SPPW factor as a real number.

The formula for Single Payment Present Worth is:

SSPW =(1+i)^{-n}

where:

- SPPW is the Single Payment Present Worth factor
**i**is the interest rate**n**is the number of cash flow periods.

This equation solves for the single payment present worth factor. The single-payment present-worth factor, SPPWF, is the reciprocal of the single-payment compound amount factor.

This equation uses the **discount rate**, i, and the **number of payments** to calculate the **discount factor** which will return present value of a future worth. symbol: (P/F,i%,n)

- (SPCA) Single Payment Compound Amount Factor
- (USSF) Uniform Series Sinking Fund Factor
- (SPPW) Single Payment Present Worth Factor
- (UGFW) Uniform Gradient Future Worth Factor
- (UGPW) Uniform Gradient Present Worth Factor
- (UGUS) Uniform Gradient Uniform Series Factor
- (USCA) Uniform Series Compound Amount Factor
- (USPW) Uniform Series Present Worth Factor

- Lindeburg, Michael R (1992). Engineer In Training Reference Manual. Professional Publication, Inc. 8th Edition.