Run the calculator and most people think the same thing: "That won't be enough." Correct — the national pension is designed to set a floor for retirement, not to fund it entirely.
Hence the three-tier pension: layers stacked to build retirement income.
Tier 1 national pension (basic living) + Tier 2 retirement pension (built at work) + Tier 3 private pension (your own) — with Tier 4 housing pension if needed.
Tier 1 — national pension (the floor)
- Role — minimum living costs. Its strengths are being inflation-linked and lifelong.
- Limit — the 43% replacement rate assumes 40 years of contributions, which most people don't reach.
- Action — start by extending your contribution years.
Tier 2 — retirement pension (accrues at work)
- Role — retirement funds accumulating with years of service.
- The common mistake — cashing out severance when changing jobs. Your retirement savings reset every time.
- Action — consolidate in an IRP, and if you're on DC, actually invest it. (DB vs DC vs IRP)
Tier 3 — private pension (the layer you build)
- Role — voluntary saving to close the gap left by tiers 1 and 2.
- Pension savings and IRP give a tax credit on up to ₩9M a year combined — you're refunded tax while saving for later.
- Action — fill the tax credit limit first. (pension savings and IRP)
Tier 4 — housing pension (if you own a home)
House-rich but cash-poor? You can pledge the home you live in and receive monthly income for life while keeping ownership and residence. (housing pension guide)
What to fill first
- Reach 10 years of national pension — without it there's no pension at all. Top priority.
- Protect your retirement pension — roll it into an IRP when changing jobs. Stop the leaks first.
- Fill the pension savings and IRP tax credit — a guaranteed return in the form of refunded tax.
- Extend national pension years — retroactive payments and refund repayment.
- Then general investing.
The order matters: a guaranteed tax credit comes before uncertain investment returns. Many people skip tier 3 and go straight to stocks and ETFs — capturing the tax benefit first is simply more efficient.
Seeing all your pensions at once
- Financial Supervisory Service integrated pension portal — shows every pension you hold in one place.
- National Pension Service estimate service — your projected national pension.
- Together they give a rough picture of your monthly retirement income.
FAQ
How much do I need per month in retirement?
It varies widely, though 60–70% of pre-retirement income is a common target. What matters most is knowing the gap between that and your projected income.
I can't fund all three tiers.
Follow the order. Just 10 years of national pension → protecting severance → the tax credit limit makes a substantial difference.
Doesn't more pension mean more tax?
Pension income tax applies, but at lower rates than a lump sum. Watch the effects on health premiums and the basic pension when planning.
Retirement planning is less about the total saved than how many layers you've stacked. Build them in order.
This is general information, not investment or financial advice. Rules and taxes change and circumstances differ — consult a professional.
