---
title: "Update a customer bank account"
method: PATCH
path: "/v3/customers/{customerId}/bank-accounts/{bankAccountId}"
tags: ["customers"]
---

# Update a customer bank account

`PATCH /v3/customers/{customerId}/bank-accounts/{bankAccountId}`

Update details about an existing customer bank account.

You can update only the `nickname` and `ownerType` fields for a customer bank account. If you want to update any of the other fields, create a new customer bank account with `POST /v3/customers/{customerId}/bank-accounts`.

## Path parameters

- `customerId` string, required — BILL-generated ID of the customer. The value begins with `0cu`.
- `bankAccountId` string, required — BILL-generated ID of the customer bank account. The value begins with `cba`.

## Headers

- `sessionId` string, nullable — API session ID generated with `/v3/login`
- `devKey` string, nullable — Developer key generated with your BILL developer account

## Request body

- UpdateCustomerBankAccountRequestDto — Update a customer bank account
  - `nickname` string — Customer bank account nickname
  - `ownerType` 'BUSINESS' | 'PERSONAL' — Customer bank account owner type

## Response `200`

Update a customer bank account response

- CustomerBankAccountResponseDto — CustomerBankAccount response Dto.
  - `id` string — BILL-generated ID of the customer bank account. The value begins with `cba`.
  - `nameOnAccount` string — Customer bank account name
  - `nickname` string — Customer bank account nickname
  - `routingNumber` string — Customer bank routing number
  - `accountNumber` string — Customer bank account number
  - `type` 'CHECKING' | 'SAVINGS' — Customer bank account type.
  - `ownerType` 'BUSINESS' | 'PERSONAL' — Customer bank account owner type.
  - `status` 'NOT_VERIFIED' | 'VERIFIED' | 'PENDING' | 'BLOCKED' | 'EXPIRED' | 'INVALID' | 'UNDEFINED' — Customer bank account status.
  - `archived` boolean — Set as `true` if the customer bank account is archived
  - `createdTime` string, date-time — Created date and time
  - `updatedTime` string, date-time — Updated date and time

## Other responses

- `4XX` — List of errors.
- `5XX` — List of errors.

---

[API](https://skmtc.net/bill/apis/bill-v3-api.md) · [All operations](https://skmtc.net/bill/apis/bill-v3-api/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/bill/bill-v3-api/revisions/0483350c434e/schema)