Retirement Pension (DB/DC/IRP) Estimated Payout Calculator

Select your retirement pension plan type (DB, DC, or IRP) and enter the details below to estimate your lump-sum payout at retirement and your monthly amount if received as a pension.

Leave at 0 to assume no further growth while receiving monthly payments

Select your plan type and enter the details above to estimate your retirement pension payout.

About Korea's DB, DC, and IRP retirement pensions

Beyond the mandatory National Pension, Korean employers must offer a company retirement pension through one of two structures — Defined Benefit (DB), where the final payout is guaranteed based on your salary and years of service regardless of investment performance, or Defined Contribution (DC), where a fixed percentage of salary is invested each year and the final payout depends on investment returns — plus individuals can voluntarily add an IRP (Individual Retirement Pension) account on top of either. This tool estimates your expected lump-sum or monthly payout under whichever plan type applies to you.

How each plan type is calculated

DB calculates a lump sum as your average monthly wage just before retirement × your years of continuous service, following the same basic formula as standard severance pay, unaffected by market performance. DC and IRP instead calculate future value using the standard compound growth formula, treating your entered annual contribution (your salary ÷ 12 for DC, or your entered additional amount for IRP) as growing at your assumed annual return rate over your investment period — if you choose to receive the result as an ongoing pension rather than a lump sum, the calculator converts the final balance into equal periodic payments using a standard pension-payout amortization formula based on your chosen payout period and assumed return rate during payout.

Frequently asked questions

Which is better, DB or DC?
Neither is universally better — DB offers predictability and protects you from investment risk (valuable if you expect steady salary growth or are risk-averse), while DC gives you investment upside potential (valuable if you're comfortable with risk and expect strong long-term returns), so the better choice depends on your salary trajectory, risk tolerance, and investment confidence.
Can I have both a DC/DB plan and an IRP?
Yes — an IRP is a separate, voluntary account you can contribute to on top of your employer-provided DB or DC plan (and it's also where your DB/DC balance typically transfers when you leave a job), making it a common way to consolidate and continue building retirement savings across job changes.
Why does the calculator ask for an assumed return rate for the payout period too, not just the accumulation period?
If you choose to receive your retirement pension as ongoing monthly payments rather than a lump sum, the remaining balance typically continues to be invested and earn returns while it's being paid out over time, so the payout-period return assumption affects how large each periodic payment can be without exhausting the balance too early.