---
title: "Update Custom Benchmark Rate"
method: PUT
path: "/digital-banking/v1/custom-benchmarks/{custom_benchmark_id}"
tags: ["Custom Benchmarks"]
---

# Update Custom Benchmark Rate

`PUT /digital-banking/v1/custom-benchmarks/{custom_benchmark_id}`

Add a new rate to a custom benchmark. The new rate will automatically cascade to all accounts that reference this benchmark in their rate tiers on the specified effective date. This creates a new rate entry while preserving historical rate data.

## Path parameters

- `custom_benchmark_id` string, uuid, required

## Request body

- UpdateCustomBenchmarkRateRequest
  - `rate` union, required — New rate for the custom benchmark. Will create a new rate entry.
    - number
    - string
  - `effective_at` string, date-time, nullable — When the new rate becomes effective. Defaults to now if not provided.

## Response `200`

Successful Response

- unknown

## Other responses

- `400` — Bad Request - Invalid input or validation error
- `401` — Unauthenticated - Invalid or missing authentication credentials
- `403` — Unauthorized - Insufficient permissions to access resource
- `422` — Validation Error
- `500` — Internal Server Error

---

[API](https://skmtc.net/modernfi/apis/endpoints.md) · [All operations](https://skmtc.net/modernfi/apis/endpoints/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/modernfi/endpoints/versions/d9c7bd6bd2f2/schema)