Military Pension & Early Retirement Calculator

Estimate the Korean military retirement pension and compare early honorable discharge versus serving to the rank retirement age.

Korea-related planning note

This English page is a planning estimate. If the topic involves Korean taxes, pensions, insurance, loans, or public programs, confirm the current Korean rules, limits, and eligibility before acting.

Scenario inputs

Adjust the assumptions to compare gross value, cost drag, tax drag, and downside value.

Net ending value

$278,405

Gross value before drag

$301,384

Estimated tax

$1,385

Fee and tax drag

$22,979

Total contributions

$260,000

Net gain

$18,405

7.1%

Downside value

$244,996

Scenario readout

Stress case can fall below contributions

This calculator is based on Korean Military Pension Act rules (2026): a 1.9%-per-year accrual capped at 62.7%, a 20-year service requirement, and payment starting immediately at discharge regardless of age. It is a planning estimate — confirm exact amounts with Korea’s military pension authority.

Related calculators

What is the Military Pension & Early Retirement Calculator?

This tool estimates the retirement pension a career service member (officer, warrant officer, or non-commissioned officer) will receive, and compares the lifetime financial outcome of taking early honorable discharge versus serving until the rank retirement age.

Korea’s military pension follows rules that differ fundamentally from the National Pension and the Public Servant Pension, so it needs a dedicated calculation. Three differences matter most:

  • • The retirement pension requires at least 20 years of service (19 years 6 months or more counts as 20 years).
  • • The accrual rate is a flat 1.9% per year of service, capped at 62.7% (reached at 33 years).
  • • Unlike the National or Public Servant pension, it begins immediately the month after discharge, with no minimum age.

Korea-based rules (2026). This calculator applies the Republic of Korea Military Pension Act and the Honorable Early Discharge Allowance regulation. Figures are planning estimates; confirm exact amounts with Korea’s military pension authority (the Ministry of National Defense financial management corps).

Core rules of the military pension (2026)

1. Eligibility

You must complete 20 or more years of service to receive a retirement pension. A period of 19 years and 6 months or more is treated as 20 years. If you leave with fewer than 20 years, you receive only a lump-sum retirement payment instead of a pension, so crossing the 20-year threshold is the single most important fork in your retirement income.

2. Pension formula

Monthly pension = Average standard monthly income × accrual rate
Accrual rate = years of service × 1.9% (capped at 62.7%)

Twenty years of service yields 38%, thirty years yields 57%, and 33 years or more reaches the 62.7% cap. The average standard monthly income is the average of your taxable standard monthly income across your entire service period. Because the military pension was excluded from the 2015 reform that phased down the Public Servant and National Pension accrual rates (toward 1.7%), it still uses a flat 1.9%.

3. Contributions and start date

Serving members contribute 7% of standard monthly income, matched by the government (raised from 5.5% to 7% in July 2013). The pension is paid from the month after discharge and has no age requirement, so a member who completes 20 years and leaves in their 40s starts collecting right away — the longer the collection period, the larger the lifetime total.

4. Honorable early discharge allowance (key to the early-exit decision)

Leaving voluntarily well before the retirement age earns an honorable early discharge allowance, computed in two tiers on the months remaining to the age limit:

1–5 years remaining: monthly base pay × 1/2 × remaining months
5–10 years remaining: monthly base pay × 1/2 × [60 + (remaining months − 60) ÷ 2]
Beyond 10 years remaining: not counted

For example, with monthly base pay of KRW 4,000,000 and 8 years remaining, the allowance is half pay (KRW 2,000,000) × 78 months ≈ KRW 156 million. Because it can be the largest single figure in the decision, entering an accurate monthly base pay is important.

How to judge the early-retirement trade-off

The military pension has no early-claim reduction like the National Pension, because it starts immediately at discharge. The real question is a service-length decision: retire early now, or serve to the rank age limit? This calculator lines up the lifetime totals of both scenarios.

When early discharge tends to win

Early discharge adds the honorable allowance and starts the pension earlier and for more years. When the years remaining make the allowance large, and when life expectancy is long, the early scenario’s cumulative total leads early. A reliable second-career income makes early discharge even more attractive.

When serving to the age limit tends to win

Serving longer raises the accrual rate (up to 62.7%) and the monthly pension. You also keep drawing military pay until discharge, so once salary is included, serving to the limit often produces the larger total income. The calculator surfaces the remaining military pay until the age limit as a reference figure.

Watch out for leaving before 20 years

If you discharge before completing 20 years, no retirement pension arises at all — only a lump-sum payment. That forfeits a lifetime of pension income, so if you are close to 20 years it is usually far better to serve a little longer and secure the pension entitlement.

How to use it

Step 1: Basic information

Set gender, commissioning age, current age, and life expectancy. Choosing gender fills a default life expectancy that you can adjust.

Step 2: Income and base pay

Enter the current standard monthly income (the pension basis) and the monthly base pay (the honorable-allowance basis), plus an annual growth rate for a more accurate average.

Step 3: Compare discharge points

Set the rank retirement age (serve-to-limit scenario) and the planned early discharge age (early scenario), then watch the outcome update in real time.

Step 4: Read the results

Use the summary card, verdict banner, scenario comparison table, and the cumulative-by-age chart to find the break-even age, then review the salary note and detailed figures.

Frequently asked questions

Q. How many years of service are required?

A. At least 20 years. A period of 19 years 6 months or more counts as 20 years; below 20 years you receive only a lump-sum payment.

Q. Does the pension start immediately at discharge?

A. Yes. The military pension has no minimum age and begins the month after discharge — a major advantage over the National and Public Servant pensions, which wait until 63–65.

Q. Why is the accrual rate different from the Public Servant Pension?

A. The military pension was excluded from the 2015 rate-reduction reform, so it keeps a flat 1.9% per year, while the Public Servant Pension steps down toward 1.7% by 2035.

Q. How large is the honorable early discharge allowance?

A. It depends on the months remaining to the age limit and on monthly base pay: half pay times remaining months up to 5 years, a tapered formula for 5–10 years, and nothing counted beyond 10 years.

Q. Are the results exact?

A. They are estimates based on the statutory formulas. Average income, the honorable allowance, and the severance allowance depend on individual pay and service records, so confirm exact amounts with the military pension authority and your personnel office.

Tips and cautions

  • Check the 20-year threshold first: leaving before 20 years forfeits the pension entirely.
  • Include earned income: pension and allowance alone favor early discharge, but a rational decision weighs remaining military pay and expected second-career income too.
  • Remember the 33-year cap: at 33 years the accrual rate hits 62.7%, so further service does not raise the pension.
  • Enter base pay precisely: the honorable allowance uses base pay from the pay table, not standard monthly income.
  • Income ceiling: if standard monthly income exceeds 1.6× the all-public-servant average, a ceiling may apply to contributions and pension.

Calculate your military pension trade-off now

Enter your commissioning age and standard monthly income to see the retirement pension and the early-discharge outcome instantly.

Simulated on 2026 Korean Military Pension Act rules, all the way to the break-even age.