These utilities are provided by Util Monster (util.monster) - util.monster
β» Based on 2025
Purpose of This Calculator
Accurately calculate interest on savings and deposits to help with financial planning. Choose between simple and compound interest methods, and automatically calculate after-tax amounts.
β οΈ This calculator applies South Korean tax law (as of 2025).
Product Type
Interest Calculation Method
Monthly Payment
KRW
Deposit Amount
KRW
Period
months
Annual Interest Rate
%
Principal0KRW
Interest (Pre-tax)0KRW
Interest Income Tax (15.4%)0KRW
Interest (After-tax)0KRW
Final Amount0KRW
β» Based on 2025 interest income tax rate of 15.4% (income tax 14% + local tax 1.4%)
β» Tax-exempt products or tax-advantaged products require separate calculation.
β» Actual amounts may vary depending on financial institution terms.