# Rate (FV)

| **Name**    | ***Rate (FV)***                                                                                                   |
| ----------- | ----------------------------------------------------------------------------------------------------------------- |
| Syntax      | Rate (Real numPeriods, Real Pmt, Real PV, Real FV)                                                                |
| Purpose     | To return the interest rate per period for an annuity.                                                            |
| Description | Returns the interest rate per period for an annuity. Also considers the Future Value.                             |
| Return Type | Double                                                                                                            |
| Parameters  | <p>numPeriods \[System.Double]</p><p>Pmt \[System.Double]</p><p>PV \[System.Double]</p><p>FV \[System.Double]</p> |

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/0%20\(42\).png)

### **Example**

In this example, we will be passing the required parameters to the function transformation object using a *Variables* object.

Where,

*numPeriods* = 5

*Pmt ­*= 10

*PV* = 3500

*FV* = 5000

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/1%20\(43\).png)

Right-click on the function transformation object and select *Preview Output.* You can see that Astera Data Stack has applied the Rate function, and returned the Interest rate value, while also considering the future value.

![](https://github.com/astera-software/Astera_Data_Stack_v9/blob/main/.gitbook/assets/2%20\(43\).png)