Loan Calculator
Compare monthly loan repayments using equal payment or equal principal methods at a constant annual interest rate.
Real-time Results
The amount you need to pay each month
The total amount you will pay over the loan term
The total interest you will pay over the loan term
Loan Summary
Key details about your loan calculation
| Item | Value |
|---|---|
| Principal | ¥100,000 |
| Interest Rate | 4.9% |
| Loan Term | 30 years (360 months) |
| Payment Type | Equal Payment |
Amortization Schedule
Monthly breakdown of your loan payments
View details (13)
| Item | Value |
|---|---|
| Month 1 Principal: ¥122.39 | Interest: ¥408.33 | Balance: ¥99877.61 | ¥530.73 |
| Month 2 Principal: ¥122.89 | Interest: ¥407.83 | Balance: ¥99754.71 | ¥530.73 |
| Month 3 Principal: ¥123.39 | Interest: ¥407.33 | Balance: ¥99631.32 | ¥530.73 |
| Month 4 Principal: ¥123.90 | Interest: ¥406.83 | Balance: ¥99507.42 | ¥530.73 |
| Month 5 Principal: ¥124.40 | Interest: ¥406.32 | Balance: ¥99383.01 | ¥530.73 |
| Month 6 Principal: ¥124.91 | Interest: ¥405.81 | Balance: ¥99258.10 | ¥530.73 |
| Month 7 Principal: ¥125.42 | Interest: ¥405.30 | Balance: ¥99132.68 | ¥530.73 |
| Month 8 Principal: ¥125.93 | Interest: ¥404.79 | Balance: ¥99006.74 | ¥530.73 |
| Month 9 Principal: ¥126.45 | Interest: ¥404.28 | Balance: ¥98880.30 | ¥530.73 |
| Month 10 Principal: ¥126.97 | Interest: ¥403.76 | Balance: ¥98753.33 | ¥530.73 |
| Month 11 Principal: ¥127.48 | Interest: ¥403.24 | Balance: ¥98625.85 | ¥530.73 |
| Month 12 Principal: ¥128.00 | Interest: ¥402.72 | Balance: ¥98497.84 | ¥530.73 |
| Final Month Principal: ¥528.57 | Interest: ¥2.16 | Balance: ¥0.00 | ¥530.73 |
Principal vs Interest Ratio
Ratio distribution of original principal vs accumulated interest costs
Disclaimer
The calculation results of this financial tool are for estimation and research reference only and do not constitute any investment advice or commitment. Actual rates and yields are subject to the final contract with the financial institution.
Why Choose Loan Calculator
Enter principal, annual interest rate, term in years, and repayment method to calculate monthly repayments, total repayment, interest, and an amortization schedule. The annual interest rate entered here is divided by 12 to obtain the monthly interest rate. Calculations exclude fees, insurance, rate changes, and early repayments.
- ✓Compare equal payment and equal principal repayments.
- ✓View principal, interest, and remaining balance by month.
- ✓Calculate total interest under a constant-rate assumption.
How to Calculate
- 1Enter the loan principal, annual interest rate (%) and term in years.
- 2Choose equal payment or equal principal repayment.
- 3Review the monthly repayment, total interest and amortization schedule.
Frequently Asked Questions (FAQ)
What is the difference between the repayment methods?
Equal payment keeps principal plus interest constant each month at a fixed rate. Equal principal repays the same principal amount each month, so interest and total payments decrease. For the same principal, rate and term, equal principal generally has lower total interest but higher initial payments.
How can I check a monthly payment?
For principal 100,000, annual interest 4.8%, one year, and equal payment: the monthly rate is 0.048/12 and there are 12 payments. The monthly payment is 8,551.59, total repayment 102,619.03 and interest 2,619.03. Totals use unrounded payments before display rounding.
Does this calculate a fee-inclusive APR or early repayments?
No. Enter the loan’s annual interest rate; the engine divides it by 12 and assumes that it stays constant. Fees, insurance, changing rates and early repayments are not modeled. A fee-inclusive APR and lender-specific rounding or day-count rules can produce different costs.
Authoritative References & Sources
Consumer Financial Protection Bureau — Mortgage & Loan Resources
View SourceFederal Reserve — Consumer Credit Statistics (G.19)
View SourceInvestopedia — Amortization Schedule Explained
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