# Futurebasic/Language/Reference/compound

# COMPOUND functionEdit

## COMPOUNDEdit

### FunctionEdit

(+) | Appearance |
(+) | Standard |
(+) | Console |

### SyntaxEdit

*compoundFactor#* = **FN COMPOUND#**(*rate*, *periods*)

### DescriptionEdit

Returns the compounding factor for the given interest rate and number of periods. The interest rate should be expressed as a fraction of 1; for example, 5.2 percent should be expressed as 0.052.

### NoteEdit

uses the following formula:
**COMPOUND**

`compoundFactor# = `

(1 +

)*rate*^{periods}