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Installment Savings Maturity Calculator

Calculate the pre-tax and after-tax maturity payout of a monthly installment savings plan.

KRW
%
months

After-tax maturity payout

12,192,465KRW

💡 Plan around the after-tax number to avoid surprises.

Total deposits
12,000,000KRW
Pre-tax interest
227,500KRW
Tax withheld
35,035KRW

How it works

Savings interest isn't simply principal × rate, because each monthly deposit earns interest for a different length of time. This tool uses the same method banks actually apply: monthly amount × (rate/12) × {n(n+1)/2}.

FAQ

Q. Who qualifies for the preferential tax rate?

A. Certain credit-union or savings-bank products (or products only subject to the special rural tax) qualify for the 9.5% rate — check the product terms before signing up.

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