---
title: "Updates an existing program-level interest rate tier."
method: PUT
path: "/programs/{programCode}/InterestRateTiers"
tags: ["InterestRate"]
---

# Updates an existing program-level interest rate tier.

`PUT /programs/{programCode}/InterestRateTiers`

This endpoint allows Partners to update an existing interest rate tier.

## Path parameters

- `programCode` string, required

## Headers

- `X-GD-RequestId` string, required

## Request body

- UpdateProgramInterestRateTierRequest — Represents a request to update a program's interest rate tier, including tier details, balance thresholds, and APY. Used to modify the configuration of interest rate tiers for a specific program.
  - `interestTierName` string, nullable — Gets or sets the name of the interest rate tier.
  - `accountBalanceType` string, nullable — Gets or sets the type of account balance used for the tier (e.g., average, minimum, maximum).
  - `frequency` string, nullable — Gets or sets the frequency at which the interest is applied (e.g., monthly, quarterly).
  - `startDate` string, date-time, nullable — Gets or sets the start date for the interest rate tier's validity period.
  - `endDate` string, date-time, nullable — Gets or sets the end date for the interest rate tier's validity period.
  - `APY` number, double, nullable — Gets or sets the annual percentage yield (APY) for the tier.
  - `maxAccountInterestType` string, nullable — Gets or sets the type of maximum account interest applicable to the tier.
  - `minimumPurseBalance` number, double, nullable — Gets or sets the minimum purse balance required for the tier.
  - `maximumPurseBalance` number, double, nullable — Gets or sets the maximum purse balance allowed for the tier.
  - `maxAccountInterestBalance` number, double, nullable — Gets or sets the maximum account interest balance for the tier.

## Response `200`

OK

- UpdateProgramInterestRateTierResponse — Represents the response returned after updating a program interest rate tier. Inherits standard response metadata and details from Gd.Bos.DataTransfer.Response.ResponseBase. Used to convey the outcome of the update operation, including status codes and response details.
  - `responseDetails` ResponseDetail[], nullable — Required: A list of response details providing status codes, descriptions, and additional information about the result of the operation.
    - `code` integer — The primary status or error code for the response (e.g., 200 for success, 400 for validation error).
    - `subCode` integer, nullable — An optional subcode providing more granular detail about the response or error.
    - `description` string, nullable — A human-readable description of the response, error, or status.
    - `url` string, nullable — A URL linking to documentation or a web page with more information about the response code.

## Other responses

- `401` — Unauthorized
- `403` — Forbidden
- `500` — Internal Server Error
- `503` — Service Unavailable

---

[API](https://skmtc.net/greendot/apis/baas-apis.md) · [All operations](https://skmtc.net/greendot/apis/baas-apis/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/greendot/baas-apis/versions/666553766b78/schema)