How you manage retirement assets determines your tax bill

Same savings, different outcomes: 3.27 million won vs. 3.95 million won a month

The gap of about 700,000 won comes down to one product: a whole-life annuity insurance plan

Tax-exempt income is excluded from national health insurance premium calculations

The more national pension and assets you have, the greater the tax-saving effect

The average South Korean pays about 4.9 million won in insurance premiums per year (2022, Korea Insurance Development Institute). This column — "Iboso" — is about making every won of those premiums count for your life.

Lee Sang-ha (pseudonym) and Kim Jae-sun (pseudonym) both set aside 3 million won a month on top of 1.2 million won in national pension, yet their monthly deposits came out to 3.27 million won and 3.95 million won respectively. Where does the gap begin? [Created using Gemini]
Lee Sang-ha (pseudonym) and Kim Jae-sun (pseudonym) both set aside 3 million won a month on top of 1.2 million won in national pension, yet their monthly deposits came out to 3.27 million won and 3.95 million won respectively. Where does the gap begin? [Created using Gemini]

Lifelong friends Lee Sang-ha (pseudonym) and Kim Jae-sun (pseudonym) watched their parents struggle in old age and started planning for retirement early. On top of 1.2 million won a month in national pension, each set aside an additional 3 million won, confident that 4.2 million won would flow in every month after they stopped working. When the payments finally arrived, however, Lee's bank account showed only 3.27 million won. Kim, who had saved the exact same amount, received 3.95 million won. Why was Lee's deposit about 700,000 won short?

Retirement planning is an "earning game" when you are young, but the moment you stop working it becomes a "protecting game." Keeping money from leaking out matters just as much as growing what you have saved. Health risks and inflation are hazards everyone anticipates, yet the factor that most often trips retirees up is something else entirely: taxes and national health insurance premiums.

Lee and Kim own identical homes worth 600 million won and each receives 1.2 million won a month in national pension. The only difference is how each chose to receive the remaining 3 million won. That single choice created a gap of 700,000 won a month. What did Lee miss?

Same savings — why are the payouts different?

The difference lies in how each person structured their retirement income. Lee built the 3 million won from deposit interest and dividend-paying stocks. Financial income of that kind is subject to comprehensive taxation once it exceeds 20 million won a year, combining it with other income. In Lee's case, a 15.4 percent withholding tax on the financial income translated to roughly 460,000 won a month in taxes, and national health insurance premiums added another 470,000 won — a combined drain of 930,000 won every month.

Kim took the opposite approach, arranging the same 3 million won through a whole-life annuity insurance plan. Such plans qualify for unlimited tax exemption when certain conditions are met, bringing the tax bill to zero. Kim's health insurance premium came to just 250,000 won a month.

Both individuals hold the same 600 million won home and receive the same 1.2 million won in national pension. The entire gap between them comes down to which "container" each used to hold that 3 million won.

Does an annuity really lower health insurance premiums?

Yes, because tax-exempt income is excluded from the national health insurance premium calculation. Under Article 44 of the Enforcement Rules of the National Health Insurance Act, income that qualifies as tax-exempt is not counted when premiums are assessed.

Health insurance premiums are calculated differently for workplace subscribers and regional subscribers. Once a person retires and leaves employment, they move to the regional subscriber category. From that point, interest, dividends, business, earned, and pension income are all added together and scored, and that score determines the premium.

The key is that the same 3 million won is treated differently depending on its nature. Tax-exempt income is excluded from the calculation from the outset, lowering the score and the premium along with it. In the Lee and Kim example, both the home and the national pension are counted identically for both people, but Lee's additional 3 million won is included in the calculation while Kim's is not — and that is what produced the 470,000 won versus 250,000 won difference in premiums.

How should national pension and whole-life annuity insurance be used together?

A typical salaried worker receives roughly 1 million to 1.5 million won a month in national pension after retirement. Income exceeding 20 million won a year disqualifies a person from dependent coverage under national health insurance, and national pension alone often pushes retirees close to that threshold. If the property tax base used for health insurance assessment — set at the officially published price, which is lower than market value — exceeds 540 million won, losing dependent status requires only 10 million won in additional annual income. The more national pension a person receives and the more assets they hold, the greater the impact of even a small amount of additional income.

For people in that situation, shifting a portion of retirement assets into a whole-life annuity insurance plan can be an effective strategy. It offers a two-layer tax-saving effect, simultaneously reducing both health insurance premiums and comprehensive income tax liability through the tax exemption benefit. Pairing this with a tax-advantaged account such as an individual savings account can amplify the effect further.

Is a whole-life annuity insurance plan the same as a pension savings account or IRP?

No — the tax structures work in opposite directions. Pension savings accounts and individual retirement pension (IRP) accounts provide a tax credit at the contribution stage, up to a maximum of 9 million won a year. The government reduces your tax bill when you pay in, as an incentive to save for retirement. The trade-off is that when you eventually draw the money as a pension, you owe pension income tax on both the principal and the returns.

A whole-life annuity insurance plan works the other way around. There is no tax benefit when you contribute. In return, the insurance gains you receive later are fully tax-exempt with no ceiling. Ordinary savings-type insurance products carry tax-exemption limits — 100 million won for lump-sum payments and 1.5 million won for monthly contributions — but whole-life annuity insurance is treated by the government as a genuine retirement income vehicle and is therefore exempt without any cap.

A simple way to tell them apart is by the product name. Any product with "pension savings" (연금저축) in its name — such as a pension savings insurance or pension savings fund — is the tax-credit type. A product whose name ends in "annuity insurance" (연금보험) with the payout method set to "whole-life" is the tax-exempt type.

What does "whole-life" mean?

Annuity payout structures generally fall into three broad categories.

The whole-life type pays out for as long as the policyholder is alive. The longer you live, the more you benefit, and the unlimited tax exemption is available only with this option. Once payments begin, however, the contract cannot be cancelled mid-stream. To offset the risk of dying early and receiving less, most plans include a guaranteed payment period — typically 10 or 20 years — during which a designated beneficiary continues to receive payments if the policyholder dies.

The fixed-term type distributes the money over a set period, such as 10 or 20 years. Monthly payments are larger than under the whole-life option for the same amount saved, but once the period ends the payments stop — leaving a potential income gap for those who live well beyond it.

The inheritance type keeps the principal intact and pays out only the interest as a pension; when the policyholder dies, the principal passes to the family. Monthly income is the lowest of the three, but it suits those who want to leave assets to their children.

Which option fits best depends on health, whether you plan to pass assets to heirs, and when other retirement income sources will begin. You are not limited to a single choice, either. A single annuity insurance policy can be split — half on a whole-life basis and half on a fixed-term basis, for example — covering ongoing living expenses with the whole-life portion while using the fixed-term portion for higher spending in the early years of retirement.

I've heard the whole-life payout is less than expected — is that true?

To some extent, yes. Under a whole-life structure, the insurer must guarantee payments for as long as the policyholder lives, without knowing in advance how long that will be. Because the insurer calculates the total lifetime payout in advance using Statistics Korea's life expectancy tables, a longevity risk management cost is deducted from the annuity pool. As a result, the monthly amount you receive in the early years may feel smaller than what you would get from a fixed-term or inheritance-type plan funded with the same money.

That cost, however, only becomes meaningful if you live longer than average. For those who reach their 80s or 90s, the total pension received over a lifetime more than offsets the cost — so there is no reason to avoid the whole-life option simply because of that deduction. Concerns about dying early can be addressed by setting a longer guaranteed payment period at the time of enrollment.

So do you lose out if you die early?

One condition for the tax exemption on a whole-life annuity insurance plan is that the insurance contract and the annuity pool are extinguished upon the policyholder's death. This leads some people to worry that paying in a large amount and then dying early means losing out.

The guaranteed payment period is the safeguard against that outcome. <style ref="s0">If a guaranteed period — typically 10, 15, or 20 years — is set within the life expectancy published by Statistics Korea at the time of enrollment, heirs can continue receiving the remaining payments until that period ends, even if the policyholder dies before it does.</style> How long a guaranteed period you choose at enrollment determines how much early-death risk is mitigated.

Won't inflation erode the value of the payments over time?

That is a valid concern. When a fixed amount is paid out indefinitely, rising prices inevitably reduce its real value.

Variable annuity insurance addresses this. It invests the accumulated funds in vehicles such as mutual funds, and <style ref="s0">if the payout method is set to "whole-life," the entire principal and investment gains are tax-exempt regardless of the rate of return.</style> Because the tax exemption hinges on choosing the whole-life payout option — not on how the underlying funds are managed — a variable annuity with a whole-life payout qualifies for the same unlimited tax exemption. This means it is possible to pursue both inflation-beating returns and tax-exempt income at the same time.

What is the best way to put all of this into practice?

The right approach varies by situation.

For salaried workers and the self-employed, the first priority is maximizing the tax credit through pension savings accounts and IRP contributions, up to the annual ceiling of 9 million won. Because that money comes back at year-end tax settlement or when filing comprehensive income tax, it is the most straightforward gain available. After that, adding a whole-life annuity insurance plan to supplement tax-exempt lifetime income is an efficient next step. Pension savings accounts and IRP are subject to pension income tax when drawn, and the tax burden can increase once annual withdrawals exceed 15 million won — making a tax-exempt whole-life annuity a useful buffer.

For those with substantial assets, converting a portion into a whole-life annuity insurance plan — in the form of a lump-sum immediate annuity — can be effective. As financial income grows, both comprehensive income tax and health insurance premium burdens rise together; receiving that income through a whole-life annuity reduces both at once.

In either case, it is important to remember that the whole-life structure locks up funds once chosen. If there is any chance you may need cash in an emergency, it is safer to keep some assets liquid from the outset rather than committing everything to a whole-life annuity.

I've heard the tax-exemption conditions are strict — is that true?

There are several conditions, but the two that policyholders must personally verify at enrollment are straightforward. <style ref="s0">The policyholder, the insured, and the beneficiary must all be the same person, and the annuity start date must be set at age 55 or later.</style> The remaining conditions — lifetime receipt, no mid-term cancellation, limits on the guaranteed period — are built into the contract by the insurer when the whole-life annuity terms are applied.

Couples planning together should take note of one important point. Enrolling under one spouse's name while the other receives the pension does not qualify for tax exemption, because the person contributing the funds and the person receiving the annuity must be the same. Each spouse should enroll separately under their own name.

Making a mid-term withdrawal when cash is urgently needed will void the tax-exempt status and convert the contract to a taxable one. In that situation, a policy loan — borrowing against the contract under its terms — is a better option. A policy loan carries interest and repayment obligations, but it does not affect the tax-exempt status. Conversely, making additional contributions when extra funds are available is permitted, so if the product allows top-ups, using that feature to grow the retirement fund is a sound strategy.

Retirement planning without a tax strategy can result in losses far larger than anticipated. Diversifying the sources of retirement income — real estate, interest, dividends, pension, and earned income — and layering a tax plan on top of that foundation is ultimately what protects your retirement.


psj@heraldcorp.com