Did you know you might have unclaimed tax refunds sitting there? Income-tax and VAT refunds, EITC, overpaid local taxes — for various reasons, money you're owed sometimes never reaches your account.
1. Where the money sits. Five streams — global income, year-end settlement and VAT refunds, overpaid local taxes, and the earned/child income tax credits. Checking takes about five minutes: Hometax for national taxes, Wetax for local ones.
2. Where the risk is. After five years it expires and reverts to the state. And a notice does not restart the clock — Framework Act on National Taxes art. 54(3) states that the prescription period “shall not be interrupted by any guidance or notice” urging you to claim.
3. What to do. If you got a notice, that is the moment to claim immediately, not to wait. The odds are highest if you have moved, changed jobs or changed accounts often, or worked freelance or self-employed with 3.3% withholding or interim prepayments.
The 3 August 2026 bill widens the earned income tax credit. Income limits go ₩22m → ₩26m (single), ₩32m → ₩37m (single-earner), ₩44m → ₩52m (dual-earner), and maximum payments ₩1.65m → ₩1.8m / ₩2.85m → ₩3.1m / ₩3.3m → ₩3.6m — meaning households that do not qualify today may qualify later. Still a government bill, with no start date in the release — everything below is current law. See our guide to the 2026 tax reform bill.
Why refunds arise
| Type | Why |
|---|---|
| Income tax refund | Prepaid/withheld (3.3%) exceeds actual tax |
| Year-end settlement | Deductions made prepaid tax too high |
| VAT refund | Input VAT exceeds output VAT |
| Local tax overpayment | Car/property tax paid twice or wrong |
| EITC/child credit | Benefit paid after applying |
Account errors, address changes, or missed applications can leave it unpaid — so check directly. If you've moved, changed jobs/accounts, or done withholding as a freelancer, you're more likely to have some.
National tax — via Hometax
- Hometax/Sontax → “Find national tax refund” to see pending refunds.
- No account on file? Register a refund account to get paid.
- Gov24 also offers a combined “unclaimed refund” lookup.
- Phone: tax helpline 126.
Local tax — via WeTax
- WeTax (or ETAX in Seoul) for overpaid car/property/acquisition tax.
- Gov24's unclaimed-refund lookup shows local items too.
Also check — hidden money
| Item | Where |
|---|---|
| National tax refund | Hometax · Gov24 |
| Local tax overpayment | WeTax · ETAX · Gov24 |
| Insurance overpayment | Pension/health insurance bodies |
| Dormant deposits/insurance | Financial lookup services |
| Unclaimed card points | Card companies · combined lookup |
Split the five by where you actually look them up and one portal does not cover them all.
Why it didn't arrive
| Reason | Fix |
|---|---|
| No refund account | Register account at Hometax |
| Address/contact changed | Notice missed → check directly |
| Never applied | Credits must be claimed |
| Closed account | Re-register and request re-payment |
Important. National tax refunds expire 5 years after they arise and revert to the state. Don't assume it'll arrive someday — check now.
Five years, and then it is gone
The part that matters. A national tax refund expires five years after it arises and reverts to the state. Leaving it on the assumption that “it will turn up eventually” can mean never getting it at all. Worth one look especially if you have moved or changed accounts often, or if you have ever had tax withheld or paid in instalments as a freelancer or sole trader.
Set the three paragraphs of article 54 side by side and only one of them stops the clock.
A notice from the tax office does not restart the clock
Plenty of people get the “you have a refund waiting” notice and then wait. Framework Act on National Taxes art. 54 contains something more important than the five years.
Art. 54(3) (added 20 Dec 2016) — “the prescription period under paragraph (1) shall not be interrupted by any guidance or notice of a refund claim given by the head of the tax office to urge the taxpayer to claim.”
Getting a “you have a refund” notice does not stop the five years running. The notice does not interrupt prescription. “They contacted me, so it must be safe to deal with later” is the dangerous reading — a notice is the moment to file, not a reason to wait.
| Point | As written | Provision |
|---|---|---|
| Period | “the right to a national tax refund and to refund interest is extinguished if not exercised for five years from when it can be exercised” | art. 54(1) |
| What does interrupt it | bringing an administrative suit counts as a claim under Civil Act art. 168(1) | art. 54(2) |
| What does not | the tax office's own refund notice | art. 54(3) |
Note also that the clock runs “from when the right can be exercised,” not from when the overpayment arose — and that refund interest falls under the same five years.
Periods differ by category. National and local tax are five years; health insurance co-payment refunds expire in three. And an amended return runs “within five years after the statutory filing deadline” (art. 45-2) — a different starting point again.
5-minute self-check
① Log into Hometax → “Find national tax refund” → ② register a refund account if missing → ③ check local overpayments on WeTax → ④ run Gov24's combined lookup → ⑤ claim to your account. Most arrive within days. Also check amended returns for missed deductions.
When it arrives, and how
Once the lookup is done, as long as a refund account is registered, most payments land within a few days to two weeks. The channel and the timing differ a little by type.
- National tax (income tax, VAT) — paid after you register an account at Hometax. Amounts arising from a filing or an amended return are paid once processed.
- Overpaid local tax — refunded through WeTax or ETAX, or the city or district office that levied it.
- Earned income and child care benefits — claimed in the regular May window, paid in August or September (an account must be registered).
Check too that the receiving account is still current and that a closed account is not the one on file. If the account is blocked, the refund bounces back.
What the lookup leaves open
Is checking free?
Yes — Hometax, WeTax, and Gov24 are all free. Beware texts/apps charging a “finder fee.”
Why wasn't it deposited?
Usually a missing refund account or changed address. Register your account at Hometax.
Is a text about my refund real?
Smishing impersonating the tax office is common. Don't tap links — go to Hometax directly or call 126. The earned income and child credits are a separate pot of money worth checking in the same sitting.
Sources and where to check
- Seoul Metropolitan Government — unclaimed local tax refunds (May 2026). Seoul alone is holding 101,372 refunds worth about 12.2 billion won. They expire after five years, and you can check via ETAX, STAX, a district office or any Shinhan Bank branch.
- Financial Supervisory Service — FINE, the dormant-money portal. One place to search thirteen categories: dormant deposits and insurance payouts, unclaimed shares, overpaid car insurance premiums, card points, unclaimed money from failed institutions and unrefunded public charges.
- National Health Insurance Service — refunds of excess co-payments. You must claim within three years of receiving the claim form, and payment follows within seven days of filing.
- Korean Law Information Center — statute — Framework Act on National Taxes art. 54 (prescription of national tax refunds) (in force 1 Jan 2026, Act no. 21212). Source for “five years from when the right can be exercised,” the inclusion of refund interest, interruption by administrative suit, and — crucially — paragraph (3): a tax office notice does not interrupt prescription. This closes the “five-year national refund limit” item and disproves the assumption that a notice restarts the clock.
Written as of July 2026. The scale of unclaimed local refunds, the five-year limit, FINE's coverage and the health-insurance procedure come from the sources above. Note that the expiry period differs by category — local tax is five years, but health insurance co-payment refunds expire in three. The five-year limit on national tax refunds was checked directly against Framework Act on National Taxes art. 54 this time — which also surfaced paragraph (3): a notice from the tax office does not interrupt prescription. The 126 helpline number remains unchecked against an agency page. Amounts depend on your own lookup. Use only official channels and never enter personal data into impersonating texts or apps. See also amended returns and the tax calendar.
