1%p lower3%
Estimated maturity value
₩6,082,485Money calculator
Korea Installment Savings Calculator
Enter a monthly contribution, annual rate, term and tax rate to estimate principal, interest and maturity value.
STEP 1
Enter your values
RESULT
₩6,109,980Estimated maturity value
Estimated maturity value using equal monthly deposits and the entered tax rate.
Total contributions₩6,000,000
Gross interest₩130,000
Estimated interest tax−₩20,020
After-tax interest₩109,980
Actual deposit dates, early or late payments, bonus rates, day-count rules and rounding may change the bank’s result.
WHAT IF
What changes when Annual interest rate changes?
Compare the main result without re-entering every field.
Current input4%
Estimated maturity value
₩6,109,9801%p higher5%
Estimated maturity value
₩6,137,475Input guide
What each value means
Monthly contribution
Use the amount or value shown on the relevant contract, statement or record.
Annual interest rate
Use the amount or value shown on the relevant contract, statement or record.
Contribution term
Use the amount or value shown on the relevant contract, statement or record.
Interest tax rate
15.4% is the common taxable example; change it for the product’s tax treatment.
How it works
Korea Installment Savings Calculator formula
Gross interest = monthly contribution × monthly rate × n × (n+1) ÷ 2
Assumes equal beginning-of-month contributions earning simple interest for their remaining terms.
Example
Example calculation
Contribute KRW 500,000 monthly for 12 months at 4% to estimate gross and after-tax maturity value.
- Standard
- Equal beginning-of-month deposits; simple interest; 15.4% default tax rate
- Last reviewed
- August 25, 2026
Standards and sources
Calculated from official or reliable reference material.
Questions
Korea Installment Savings Calculator FAQ
What should I enter in the Korea Installment Savings Calculator?
Enter the requested values and the result will update immediately. Review the formula, assumptions and exclusions below the result.
Is the result an official amount?
No. It is an estimate based on the entered conditions and stated assumptions. Confirm important tax, insurance, employment or financial decisions with the relevant institution or a qualified professional.
Are Korean rules used?
Yes. This calculator applies commonly applicable South Korean rules reviewed for 2026.
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Useful next steps