The Korean pension savings double tax problem is avoidable: if you put money into a Korean pension savings account (yeongeum jeochuk) and never received the tax credit for it, you need to get a tax credit confirmation from Hometax and file it with the institution that holds the account. Until you do, contributions within the annual limit are deemed to have been credited, and a non-pension withdrawal can be withheld at 16.5% even though you never got a tax benefit. This guide applies to Korean tax residents with pension savings trusts, funds or insurance accounts, as of October 2026. It is based on the Enforcement Decree of the Income Tax Act and guidance from the National Tax Service (NTS), the Financial Supervisory Service (FSS) and a Korean brokerage. It does not describe US IRAs, UK pensions or the tax rules of any other country.

Why Korean pension savings double tax happens

Korean pension savings work on a tax-deferral basis. You receive a tax credit when you contribute and pay tax when you withdraw. The NTS consultation center explains that pension savings qualify for a credit on up to 6 million won a year, and up to 9 million won combined with retirement pension accounts such as IRP. The credit rate is 15% if your total salary is 55 million won or less (or comprehensive income of 45 million won or less) and 12% above that.

The catch is that the bank or brokerage cannot see your year-end tax settlement. So the law presumes. Article 40-3(4) of the Enforcement Decree treats contributions within the credit limit as credited from the first day of the year after payment. If you never actually benefited, you would still be taxed when the money comes out. That mismatch is what Korean investors call double taxation.

Common ways contributions go uncredited

• Other credits had already reduced your determined tax to zero, so the pension credit had nothing to offset.
• You forgot to include the contributions in your year-end settlement or income tax return.
• You had little or no taxable income in the year you contributed.
• You held several pension savings accounts, each within the limit on its own, but together above 6 million won.

The last case is easy to miss. The institution assesses the excess as if that account were your only one. Put 6 million won into account A and another 6 million won into account B, and both may look fully credited, although only 6 million won in total could actually receive the credit.

The withdrawal order and tax-excluded amounts

When you take part of the balance out, the law deems the money to leave in a fixed order, starting with the tax-free sources. Combining Article 40-3(1)-(2) with the FSS pension portal gives the order below.

Row 4 is the one that matters here. The decree counts it only when confirmed under Article 201-10, and only from the date of confirmation. Not having claimed the credit is not enough on its own; until the institution records the amount, it can be treated as row 6 money.

A worked example: you contributed 6 million won in 2025, but your tax was already zero, so no credit applied. If you cancel the account in 2026 without filing a confirmation, the institution may withhold 16.5%, or 990,000 won. The NTS says that to avoid other-income tax withholding on termination you must prove the credit was not applied by submitting the confirmation.

How to get and file the tax credit confirmation

Article 201-10 requires anyone who wants a tax-excluded amount recognized to obtain the pension contribution income and tax credit confirmation from the tax office and submit it to the withholding agent, which is your financial institution. The institution must treat any contributions beyond the credits actually received as tax-excluded, and where it can see your other pension accounts through the central database, it compares the totals.

1. 1

   Pull your contribution history

   In your provider's app, note each year's contributions, any excess already classified as tax-excluded and past withdrawals. If you have accounts at several firms, ask each for a pension contribution confirmation; the decree requires institutions to issue it immediately on request.

2. 2

   Issue the confirmation on Hometax

   The NTS path is Hometax, then certificates and applications, then instant certificates, then the pension contribution income and tax credit confirmation. The form lists pension account deductions by year from 2001 and credit-eligible amounts from 2014. Follow your institution's submission method, which may be an app upload, a branch visit or quoting the issue number.

3. 3

   Check that the prior year is included

   KB Securities states that the confirmation includes the previous year from July each year. To register last year's uncredited money, you may need a copy issued in July or later. If you need cash earlier, ask the institution first.

4. 4

   Submit, then verify before withdrawing

   File the confirmation along with other accounts' contribution confirmations if needed. Wait until the tax-excluded figure in the app has increased, then request the withdrawal or pension start. Doing it the other way round may mean a separate process to recover tax already withheld.

Splitting credited and uncredited accounts

Korean investors often talk about a credited account and an uncredited account. This is a bookkeeping habit, not a legal category. Within a single account, the institution already classifies contributions above the annual limit as tax-excluded, so splitting is not required for that excess.

Separation still helps. Keep credit-claimed contributions in one account within 6 million won a year and send other money elsewhere, so you can see which balance is tax-free. If both accounts stay within the limit, file the confirmation and other accounts' contribution records early so the second account is registered as tax-excluded. At year-end settlement, claim only the credited account and keep a yearly record of what you claimed.

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Exceptions and risks to check

• Money contributed in the year you withdraw comes out first and untaxed. The NTS says contributions made in the year of cancellation cannot be credited and are not taxed as other income.
• Termination for unavoidable reasons such as natural disaster, death, emigration, illness or bankruptcy is taxed as pension income at 3.3% to 5.5% instead of 16.5%. The FSS says documents must be filed within six months of the event being confirmed.
• You can convert an uncredited amount into a current-year contribution to claim the credit, but that money then becomes taxable on withdrawal.
• If investment losses push the balance below principal, the principal is reduced in reverse withdrawal order (Article 40-3(5)), so losses come out of the taxable sources first.
• Pension savings insurance often does not allow partial withdrawals, so you may have to cancel the whole policy. The FSS asks you to review the institution's breakdown of tax-excluded money, deferred retirement income and other amounts before deciding.

In short, double taxation arises because Korean law presumes that in-limit contributions were credited, and the tax credit confirmation is the way to rebut that presumption. Before any withdrawal or pension start, compare each account's yearly contributions with the credits you actually claimed, file a confirmation issued from July onward together with other accounts' records if needed, and wait until the tax-excluded amount appears in your account. For unusual cases, take the year-by-year figures to your institution or the NTS consultation center.