Equal Payment vs. Equal Principal — Loan Repayment Comparison

Enter your loan amount, rate, and term to compare monthly payments and total interest of both repayment methods, and see which one saves more interest.

🏦 Loan details

KRW

1억

%
mo
yr
mo
= 20년

Optional · interest-only during the grace period

💡 Which method suits you?

If you have early repayment capacity and want to save interest, choose equal principal; if you want a steady monthly amount for budgeting, equal payment fits. Compare the total-interest gap and first-month burden below.

📊 Repayment comparison

Equal principal saves 6,648,487원 more in total interest
Equal payment's first month is 159,018원 lighter

Equal payment

Same total (principal + interest) every month

Level payment
First month
632,649원
Last month
632,816원
Total interest
51,835,927원
Total repayment
151,835,927원

Equal principal

Fixed principal, decreasing interest each month

Less interest
First month
791,667원
Last month
418,149원
Total interest
45,187,440원
Total repayment
145,187,440원

Monthly payment trend

Equal payment stays level; equal principal declines over time

Equal payment Equal principal

⚠️ Notice

This calculator uses standard equal-payment and equal-principal amortization formulas and provides reference estimates only. Actual repayments vary by bank product, rate type, interest-day conventions, prepayment terms, and fees. Always confirm with your financial institution before deciding. This tool is not financial advice.

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