How to Pay Korean Taxes Online

Before you start

• Identify whether the bill is national income tax, personal local income tax or another tax.
• Check the taxpayer, tax year, reference, amount and deadline against your return or notice.
• Check whether a payment or extension has already been recorded.
• Confirm the authentication and payment method accepted by the current official service.

What you need

• Return receipt or official payment notice
• Your own accepted authentication method
• An accepted bank or card payment method
• A reconciliation listing each separate tax obligation
• A secure place to save completed-payment receipts

Steps

1. Step 1: Match the payment request to a tax record

   Compare the taxpayer, tax year, tax type, reference, amount and deadline with the original return or notice. Resolve a mismatch before authorizing payment.

2. Step 2: Choose national or local payment

   For national tax, follow the NTS Hometax payment instructions. For personal local income tax, use the official local service or the payment route on its own notice.

3. Step 3: Review the authorization screen

   Confirm the payment recipient/service, tax reference, amount, method and any charge or condition shown. Do not rely solely on an amount in a text message.

4. Step 4: Complete payment and retain proof

   Wait for the completed result, save the receipt/reference, and match the transaction to the bill. A bank authorization or unfinished payment window may need further checking.

5. Step 5: Close each tax item separately

   Mark each national and local item paid only when its evidence matches. If status is unclear, check the official record before attempting payment again.

What to check before submitting

Make one row for each obligation

Before paying, copy the details from the return or official notice into a short list. Keep national and local items on separate rows even when they relate to the same income year.

If an accountant filed for you, obtain the filing receipt and payment instructions. A statement that “the return is done” does not tell you whether each payment was completed.

Follow the current official route

The NTS income-tax payment instructions give this national-tax path:

Hometax login → 납부·고지·환급 → 세금납부 → 납부할세액 조회/납부 → 납부하기

These labels lead from payment/notice/refund to tax payment, amount-due enquiry/payment, and payment. The page specifies joint or financial certificate authentication for this route and lists bank transfer, card and simplified payment options. Follow the requirements actually shown for your transaction.

The same NTS page states that CardroTax ended service from May 22, 2026. An older guide may still name that service; use the current NTS directions instead. The separate national electronic-payment guidance also identifies Hometax and Internet Giro as official routes.

For personal local income tax, use the local notice or the relevant official local service. The 2026 Seoul guidance describes Wetax and Seoul ETAX routes. Do not reuse a national payment reference for a local bill.

Check before authorizing

Read the final screen against your list: taxpayer, tax type, period, reference and amount. Review any payment charge or condition displayed before approving the transaction. If the amount differs from the expected balance, save the explanation or ask the authority instead of overwriting a figure simply to make it match your worksheet.

Use a reference or virtual account taken from an authenticated official record or your genuine notice. When a message contains a payment link, open the official service independently and locate the obligation there before sending money.

Distinguish three documents

A filing receipt records a return submission. A payment slip describes how to pay. A completed-payment receipt records the payment result. Retain all applicable documents and connect them with the same tax reference.

After payment, compare the official completed result with your bank or card record. Note the payment date, amount and confirmation reference. If a receiving institution later asks for a tax certificate, confirm which certificate it requires; do not assume a payment screenshot is a substitute.

Fictional example: two slips, one completed payment

Taylor has a national income-tax slip and a local income-tax slip for the same income year. The national payment succeeds. Taylor saves that receipt but leaves the local row unresolved until its own payment result is confirmed. This avoids treating one successful transaction as evidence for both obligations.

If a payment window stops responding

Do not immediately repeat the payment. Record the time, reference and displayed error, then check the official payment result and the bank transaction. If one shows a debit and the other does not show completion, ask the payment service or authority to reconcile them. Keep the evidence while the issue is investigated.

For deadlines, use the actual notice and any approved extension. A general article cannot establish that your filing deadline and payment deadline were both extended. Once every applicable row has matching completed-payment evidence, retain the file with your income-tax return.

Common mistakes

• Paying a national reference with a local-tax payment route
• Treating a generated slip as a completed payment
• Paying again after a timeout without checking the first result
• Assuming a filing extension also covers payment or vice versa
• Following an obsolete CardroTax payment instruction

What to do if you are stuck

• No amount appears: compare the filing receipt and notice; ask about the correct payment route rather than guessing a voluntary-payment entry.
• Payment window failed: check the official payment result and bank transaction before retrying.
• Deadline or extension unclear: retain the actual notice and confirm what was extended.
• Local bill unpaid after national payment: return to the local record and settle that separate item.

FAQ