# Margin Rate

| Field        | Value                                                                                                                                                                                                                                  | Type                                                                                                                                                |
| ------------ | -------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------- | --------------------------------------------------------------------------------------------------------------------------------------------------- |
| **rateType** | Either `FLAT` or `TIERED`                                                                                                                                                                                                              | String, **required**                                                                                                                                |
| **tiers**    | The list of [Margin Tier](https://api.swaycharts.io/developers/#/DXtrade-REST-API?id=margin-tier) objects (up to 4) sorted by endVolume in increasing order. **Infinity** `endVolume` means the default tier and always ends the list. | [Margin Tier](https://sway-technologies.gitbook.io/sway-charts-api-documentation/rest-api-specification/cash-transaction/margin-tier), **required** |