Finance Calculator
Loan Interest Calculator
Estimate monthly payments and total interest by amount, term, rate, and repayment method.
Monthly Payment
₩1,013,371
30y
Total Interest
₩164,813,423
Total Payment
₩364,813,423
Final Month Payment
₩1,013,371
| Repayment Comparison | Average Monthly | Total Interest | Total Payment |
|---|---|---|---|
| Equal Payment | ₩1,013,371 | ₩164,813,423 | ₩364,813,423 |
| Equal Principal | ₩931,597 | ₩135,375,000 | ₩335,375,000 |
| Interest Only | ₩750,000 | ₩270,000,000 | ₩470,000,000 |
Related
Results are estimates from the entered values. Actual rates, fees, preferential conditions, deposit protection, tax eligibility, and limits depend on each financial product.
Compare Repayment Methods First
Loan searches often start with monthly payment, but repayment method and total interest determine the real burden.
- Equal payment is easier for monthly budgeting.
- Equal principal starts higher but can reduce total interest.
- Interest-only repayment needs a clear maturity principal plan.
Loan Interest Calculator Guide
The loan interest calculator estimates monthly repayment, total repayment, and total interest from loan amount, term, annual rate, and repayment method.
How to Calculate Loan Interest
- 1.Enter loan amount, term, and annual interest rate.
- 2.Choose equal payment, equal principal, or interest-only repayment.
- 3.Compare monthly payment, total interest, total repayment, and first or final month payments.
Loan Interest Calculator FAQ
What is the difference between equal payment and equal principal?
Equal payment keeps the monthly payment mostly constant. Equal principal repays the same principal each month, so the first payment is higher and later payments decrease.
How does interest-only repayment work?
The calculator assumes monthly interest payments and principal repayment at maturity. Check the final month payment carefully.
Can it estimate mortgage or lease loan interest?
Yes, if you know the amount, term, and rate. Product eligibility, DSR, LTV, guarantee fees, and early repayment fees are not included.