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`USSF = (i%)/((1+i%)^ n -1) `

Enter a value for all fields

The **Uniform Series Sinking Fund (USSF) factor **calculator computes the USSF based on the interest rate per period and the number of periods.

**INSTRUCTIONS**: Enter the following:

- (
**i**) Interest Rate - (
**n**) Number of Periods

**Uniform Series Sinking Fund factor (USSF):** The calculator returns the factor as a real number.

The formula for the Uniform Series Sinking Fund (USSF) factor is:

`USSF = i / ( (1+i)^n -1)`

where:

- USSF is the Uniform Series Sinking Fund factor
- i is the interest rate per period
- n is the number of periods (e.g. cash flow periods)

The USSF is a Discrete Compounding Discount Factor. Often, a sinking fund is created by an organization through saving money over a period of time to fund a future capital expense or repay a long-term debt.

This equation calculate the discount factor used to calculate annualized cash flow from a future worth.

This is the constant periodic amount, at a constant interest rate that must be deposited to accumulate a future value.

- (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.