🏠 Japan Housing Loan Simulator

Calculate loan repayment amounts for home purchases. Simulate monthly payments including principal, interest, and fees. Based on 2025 Japanese housing loan standards.

📅 This simulator is based on 2025 Japanese housing loan standards. Actual payments may vary depending on financial institutions and individual conditions.

Loan Amount (¥)

Annual Interest Rate (%)

Loan Term (Years)

Payment Method

Bonus Payment (Annual, ¥)

Monthly Payment

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Loan Principal — Total Interest — Total Payment —

INFO

About Japanese Housing Loans

Equal Payment (元利均等): Monthly payment (principal + interest) remains constant. Makes repayment planning easier.

Equal Principal (元金均等): Monthly principal payment is constant while interest decreases. Total payment is less than equal payment method, but initial payments are higher.

Variable Rate: Interest rate is reviewed every six months based on market rates. Starts with lower rates than fixed, but has rate increase risk.

Fixed Rate: Interest rate remains unchanged for a certain period or entire term. Easier to plan repayments, but set higher than variable rates.

Group Credit Life Insurance (団信): Insurance that zeros the loan balance if borrower dies or becomes severely disabled. Required by many financial institutions.

Note: This is a simplified calculator. Actual payments may vary with fees, guarantee charges, insurance premiums, fire insurance, etc. Consult financial institutions for details.

GUIDE

2025 Japan Housing Loan Complete Guide

Basics of Japanese housing loans

Japanese mortgages are split into variable-rate and fixed-rate (period-selection / full-term fixed, e.g. Flat 35) types. As of 2025, variable rates are very low at around 0.3-0.5%, while full-term fixed (Flat 35) is about 1.8%. Group credit life insurance (団信) is required by most lenders.

Equal payment vs equal principal

Equal payment keeps the monthly amount constant for easy budgeting. Equal principal keeps the principal portion constant while interest declines, lowering total payment but raising the early burden.

Housing loan tax deduction

Japan's 2025 housing-loan tax deduction credits 0.7% of the year-end loan balance against income and resident tax for up to 13 years. Certified high-quality homes have larger deduction caps.

Using the simulator

Vary the rate type, term, and annual bonus payment to compare monthly payments and total interest. Aim for a comfortable repayment ratio (within 25% of annual income).

Frequently asked questions

What is the difference between Equal Payment and Equal Principal repayment?

Equal Payment keeps the monthly amount (principal + interest) constant, making budgeting easier. Equal Principal keeps the principal portion constant while interest declines, lowering the total payment but raising the initial monthly amount.

Does using bonus payments reduce the total repayment amount?

Bonus payments can lower your regular monthly burden, but total interest tends to increase. It works by putting a lump sum toward the loan twice a year while reducing the standard monthly payment.

How much can I typically borrow for a home in Japan?

As a rough guide, lenders often cap loans at around 7-8 times annual income, and keeping annual repayments within 25-35% of income is considered safe. Actual screening criteria vary by lender.

Why might the simulator result differ from my actual payment?

This tool is a simplified calculation based on principal, interest, and term. Actual payments may include handling fees, guarantee charges, group life insurance premiums, and fire insurance, which can cause differences from a lender's quote.

Should I choose a variable or fixed interest rate?

Variable rates start lower but carry the risk of rising over time. Fixed rates lock in your payment for easier long-term planning but start higher. Try both rate types in the simulator to compare how payments change.