National Pension Strategy Calculator

Compare Korea-related public pension claiming strategies with benefit growth, tax, and longevity assumptions.

National pension claiming strategy

Compare early, normal, and deferred Korean National Pension claims using the Korean strategy engine and life-expectancy assumptions.

Optimal strategy

Normal claim

기대수명 81세 기준, 정상수령이 가장 유리한 전략

Normal monthly after tax

₩6,575,671

Starts at 65

Early monthly after tax

₩4,602,969

-30.0% adjustment

Deferred monthly after tax

₩9,047,010

36.0% adjustment

Life expectancy

81 years

Normal vs deferred break-even

83 years old

Uses Korean National Pension claim ages, early-claim 6% annual reduction, deferred-claim 7.2% annual increase, 50% to 100% partial deferral, pension income tax rates, and basic-pension linkage logic. This English finance calculator calls the Korean feature lib for its numeric result. KRW inputs and outputs replace the old generic USD projection stub for this batch.

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National Pension claiming strategy calculator

This English guide translates the Korean National Pension claiming strategy page. The calculator calls calculateNationalPension and compares early, normal, delayed, and partial-deferral claiming strategies.

Claiming conditions

A National Pension old-age benefit generally requires at least 120 months of contributions. The Korean content explains that normal claiming age depends on birth year, with later cohorts moving toward age 65.

The 2026 reform context is also preserved: premium rate starts at 9.5% and eventually reaches 13%, while the replacement rate is lifted to 43%. These assumptions are relevant when comparing contribution burden and expected benefit.

Early and delayed claiming

Early claiming can start up to 5 years before normal age but reduces the monthly pension by 6% per year, or 0.5% per month. A full 5-year early claim therefore pays 70% of the normal amount, reflecting a 30% reduction.

Delayed claiming can increase the monthly pension by 7.2% per year, or 0.6% per month, for up to 5 years. A full 5-year delay can pay 136% of the normal amount. Partial deferral can be selected in 50%, 60%, 70%, 80%, 90%, or 100% ratios.

Basic pension interaction

The Korean guide keeps the 2026 basic pension amount of KRW 349,700 for a single household. If National Pension monthly benefit exceeds 150% of that amount, about KRW 524,550, the basic pension can be reduced, with a maximum reduction of 50%.

The right claiming strategy depends on health, cash-flow needs, work income, spouse benefits, basic pension eligibility, and longevity. The calculator shows break-even age and cumulative benefit rather than assuming early or delayed claiming is always better.