# Get Zero-Coupon Rates

{% hint style="info" %}
**New to the Excel Add-In?** [Install the add-in](/documentation/integrations/excel-add-in/installation-and-setup.md) to start using this formula.
{% endhint %}

Fetches Zero-Coupon rates for a specified index and date.

**Note:** By default, this function returns a **simple rate**. You can change the compounding type using the optional `compounding` parameter.

#### **Zero Rates**

`=BlueGamma.ZERO_RATE(index, date, [valuation_date], [compounding])`

* **Parameters:**
  * index: e.g., "SOFR", "1M EURIBOR".
  * date: e.g., "2024-01-01".
  * valuation\_date (optional): The date that the Zero Rate is calculated on. If you leave this blank, it defaults to the current date (today).
  * compounding (optional): The compounding type. One of "Simple", "Compounded", or "Continuous". Defaults to "Simple".
* **Example:**

  ```
      =BlueGamma.ZERO_RATE("SOFR", "2026-06-30", "2025-01-01")
      =BlueGamma.ZERO_RATE("SOFR", "2026-06-30", "2025-01-01", "Continuous")
  ```


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