Free tools
Cash receipt verification
Check whether the cash receipt you received was actually issued to the National Tax Service and whether it was cancelled afterwards. The result includes the cancelled amount and cancellation date when the National Tax Service provides them. Free and no sign-in required.
- Last verified
- 2026-09-06
- Official source
- Hometax third-party issuance lookup for cash receipts (국세청 홈택스 현금영수증 제3자 발급사실 조회)
- Privacy
- The values you enter are used only for the National Tax Service lookupPrivacy policy (Korean) (opens in a new tab)
Result
Enter all four values and press Verify.
How to read the result
An issuance lookup comes back as one of four results. Unless it was issued as an approved transaction, you cannot use it as evidence as-is.
Issued as an approved transaction
The National Tax Service has a record of this issuance and no cancellation. You can use it as evidence as-is.
Issued as an approved transaction, with a cancellation on record
A cancellation followed the issuance. The result shows the cancelled amount and cancellation date the National Tax Service provides. When no amount is provided, the result only notes that a cancellation occurred. For a partial cancellation, subtract it from the transaction amount yourself.
Issued as a cancellation transaction
The approval number you looked up belongs to a cancellation transaction. It differs from the approval number of the original transaction.
No record found
If any one of the four values differs, you get this result. Cash receipts appear in the lookup from around 9 a.m. the day after issuance, so allow time for a receipt you got yesterday or later.
What this lookup covers
Last verified 2026-09-06
What this covers
- All four values must match to confirm issuance. If any one differs, the result reports no record.
- This lookup cannot tell you how much remains after a cancellation. The National Tax Service provides only the fact and the cancelled amount, so calculate the remainder yourself for a partial cancellation.
- Cash receipts appear in the National Tax Service lookup from around 9 a.m. the day after issuance. Before then, even a valid receipt reports no record.
- Lookups pause when the National Tax Service is busy. This is a queue rather than an outage, so try again shortly.
- Treat the result as a reference. Before recording an expense or claiming a deduction, re-check on Hometax.
Official sources
- View the official source (Korean) (opens in a new tab)
Hometax third-party issuance lookup for cash receipts (국세청 홈택스 현금영수증 제3자 발급사실 조회)
Last verified 2026-09-06
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OpenFAQ
About the Cash receipt verification
Is cash receipt verification free?
Yes. It is free and requires no sign-in. It checks one receipt at a time.
What do I need to enter?
Four values: the supplier registration number, the approval number, the transaction date, and the transaction amount. The National Tax Service confirms issuance only when all four match.
A receipt I got yesterday is not found.
Cash receipts appear in the National Tax Service lookup from around 9 a.m. the day after issuance. Before then, even a valid receipt reports no record.
My approval number contains letters.
Cash receipt approval numbers are nine characters mixing letters and digits, not digits only. Enter it exactly as printed and the lookup converts letters to upper case.
Is the transaction amount the supply value?
It is the total including VAT. Enter the total printed on the receipt.
Can I check a cancelled cash receipt?
Yes. When there is a cancellation history, the result shows the cancelled amount and cancellation date the National Tax Service provides. For some records no amount is provided, and then the result only notes that a cancellation occurred.
Can I see how much remains after a cancellation?
No. The National Tax Service provides only the fact of cancellation and the cancelled amount, not the balance. For a partial cancellation, subtract it from the transaction amount yourself.
What does issued as a cancellation transaction mean?
It means the approval number you looked up belongs to a cancellation transaction. It differs from the approval number of the original transaction.
The lookup says it is busy.
Your request is queued at the National Tax Service. This is not an outage, so try again shortly.
Issue cash receipts in Bolta and keep issuance and cancellation on one screen
Approval numbers and cancellation history are grouped by counterparty.