# Margin Tier

| Field         | Value                                              | Type                                                                                                                                                     |
| ------------- | -------------------------------------------------- | -------------------------------------------------------------------------------------------------------------------------------------------------------- |
| **endVolume** | End volume of a tier                               | [Number](https://sway-technologies.gitbook.io/sway-charts-api-documentation/rest-api-specification/getting-started/data-types-and-formats), **required** |
| **value**     | Margin rate ratio. E.g. `10%` is reported as `0.1` | [Number](https://sway-technologies.gitbook.io/sway-charts-api-documentation/rest-api-specification/getting-started/data-types-and-formats), **required** |

**endVolume**

For `TIERED` margin rate type is the end volume for the tier in traded units. `Infinity` value is set for the rate, applied to the volumes greater than the last defined volume. For `FLAT` is always `Infinity`, meaning the rate shall be applied to any volume.