How to Register or Change a Korean Tax Refund Bank Account

Who this guide is for

• Foreign taxpayers registering or replacing a national tax refund account
• People with a closed account or a refund that has not arrived
• Employees distinguishing payroll refunds from direct tax-office refunds

Key points

• Identify the payer and tax type before changing an account.
• Check account ownership, bank and account number against your records.
• Save the accepted submission and check the particular refund separately.
• A completed transfer cannot be redirected by merely updating future account details.
• National and local tax refunds have separate administration.

Detailed explanation

First identify who is paying the refund

Before changing bank details, find the tax year, tax type, payer and payment status. These determine the correct place to ask for help.

The NTS’s 2026 payroll-refund guidance explains that employers may settle refunds through withholding adjustments or their own funds, so employees’ actual receipt dates can vary. Special cases involving qualifying failed or closed employers have a separate direct-refund application. Changing an ordinary Hometax account is not a substitute for that application.

Where do I register or change the account?

The official national tax refund notice directs users to:

Hometax → 납부·고지·환급 → 국세환급 → 환급계좌개설(변경)신고

Menu wording may move. Search for 환급계좌개설 or 환급계좌개설(변경)신고 within the official service if needed. Account “opening” here means reporting an account for refunds; it does not open a new bank account.

The Sontax refund page also directs users from authenticated refund details to the account-reporting service. Its public lookup includes a foreign-taxpayer selection. Being able to perform a lookup does not by itself complete authenticated account registration.

Prepare the bank and taxpayer details

Keep the bank name, account number and account-holder information beside the taxpayer details you use for Hometax. Use your own account for the ordinary process. The NTS Asan instructions explicitly refer to reporting the taxpayer’s own bank account; their old menu screenshots should not be treated as the current navigation.

For foreign taxpayers, a useful preparation check is to compare the registered names and identification details held by the bank and tax service. If an ownership check fails, record the error and ask the bank or tax office which record needs correction. Do not guess alternative spellings or enter another person’s account to bypass the check.

If your bank is not offered, or you only hold an overseas account, ask the handling office which payment method it supports. Do not assume the ordinary online form supports international transfers.

Register or replace the account step by step

1. Open Hometax or Sontax directly and authenticate using a supported method.
2. Identify the account-reporting service and whether you are registering, changing or cancelling details.
3. Check the tax-type coverage shown on the form. Do not assume a setting for one tax automatically covers every refund.
4. Enter the bank and account details and complete any ownership check.
5. Submit the report and retain the receipt, processing result and date.
6. Return to the specific refund record to check whether any separate payment request or further action remains.

This is an editorial checklist for checking your submission, rather than a claim that every screen uses identical buttons. Never share authentication codes or full identity documents in public support posts.

What if the old account is closed?

Collect the refund notice, old account details, replacement account evidence and the date the old account closed. Then distinguish these situations:

Do not assume that an account change recalls a completed payment. Obtain an answer for that refund before submitting repeated changes.

Why might the refund still not arrive?

The official refund notice says unpaid taxes may be offset before the remaining amount is refunded. It also distinguishes questions about the refund decision/account report from questions about payment method/date.

Ask for the current status rather than assuming a bank error. Keep a short log of the submission date, refund reference, response and next action. A screenshot showing an estimated refund is not the same as a payment confirmation.

The Sontax guidance warns that bank-processing differences can temporarily leave an already paid refund visible in lookup results. It also identifies a five-year unclaimed-refund limit measured from the initial payment request. Older items should be checked promptly with the tax office rather than treated as permanently available.

For timing questions beyond account setup, see the refund timeline guide and status-check procedure.

What about local tax and telephone reporting?

Local-government guidance describes a separate local-tax refund process through Wetax or the authority, including account reporting. Check local income tax separately even after the national refund arrives.

Telephone reporting is not a universal fallback. The NTS identity-theft protection announcement says the protection service can block telephone registration of a national refund account. If that route is unavailable, ask the tax office about an authenticated or documented alternative.

Before leaving Korea, check that you can still access the necessary services and that the account you intend to use remains active. Retain a private copy of the accepted report and refund correspondence.

Documents you may need

• Refund notice or refund-detail record with tax year and tax type
• Identification and taxpayer details used for Hometax
• Proof of bank account ownership if requested
• The submitted tax return and its receipt where relevant
• Previous and replacement account details kept privately
• Account-change receipt and any tax-office correspondence

Common mistakes

• Updating an NTS account to try to redirect an employer's payroll refund
• Assuming a saved account proves the refund has been approved or paid
• Using a spouse's or friend's account as a workaround
• Overlooking an old closed account or bank/taxpayer name mismatch
• Treating national and local income-tax refunds as one transfer
• Repeatedly filing changes without checking processing status

When should you ask a tax professional?

Ask a qualified tax professional if you have income from several countries, business income, unclear tax residency, treaty questions, missing documents, late filing concerns, or a visa situation that depends on tax records. This site explains general patterns only and cannot review your personal facts.

FAQ