Loan Payment Calculator — Monthly payment and total interest for a mortgage, car loan or any equal-payment loan
Enter the amount, annual rate and term to get the monthly payment, total repayment and total interest on an equal-payment loan, with a bar showing how much is interest. For Japanese mortgages, car loans and education loans.
Before signing a mortgage or car loan in Japan, see what the monthly payment and total interest will be.
Before you rely on thisThis tool estimates an equal-payment (annuity) loan. Real loans add arrangement fees, guarantee fees, group credit life insurance and early-repayment charges, so the total cost is usually higher than shown. With a variable rate the payment can change in future. Nothing here is a recommendation of any financial product. Check the official repayment schedule from the lender and consult a professional if needed.
Loan Calculator: tips and things to know
- A common rule in Japan is to keep annual mortgage payments within 25% of gross annual income.
- Over a 35-year mortgage a 1-point difference in the rate changes the total repaid by millions of yen.
- A larger down payment lowers both the monthly payment and the total interest.
How to use the Loan Calculator
Enter the loan amount
Type the principal in yen.
Enter the rate and term
Type the annual interest rate and the term in years.
Read the result
The monthly payment, total repayment and total interest appear, with a bar showing the interest share.
How equal-payment loans work
This tool models the equal-payment method (ganri kinto hensai), the most common structure for Japanese mortgages and car loans. The monthly payment stays the same for the whole term, which makes budgeting easy.
What changes is the mix inside each payment. Early on most of it is interest and the principal barely moves; as the years pass the interest share falls and the principal is paid down faster.
Mortgages in Japan
Japanese mortgage rates have been among the lowest in the world for years: variable rates below 1% and 35-year fixed rates through the government-backed Flat 35 program in the low single digits. Terms of 35 years are standard, and some lenders now offer up to 50.
Foreign residents can borrow, but most banks look for permanent residency or a Japanese spouse, several years of employment in Japan and Japanese-language ability; a few lenders specialise in loans to non-permanent residents at somewhat higher rates. Group credit life insurance (dantai shinyo seimei hoken) that pays off the loan if the borrower dies is usually required and often bundled into the rate.
Small rate differences add up
The larger the loan and the longer the term, the more a rate difference matters. On a 35-year mortgage, even half a percentage point can mean millions of yen over the life of the loan.
When comparing lenders, look at the total repayment as well as the monthly figure.
Term length and down payments
A longer term lowers the monthly payment but increases total interest; a shorter term does the opposite. Try several terms to see the trade-off.
A down payment reduces the principal and therefore both the monthly payment and the interest. Early partial repayment (kuriage hensai) after the loan starts has the same effect, and the earlier it is made the more interest it saves. Keep several months of living costs in reserve rather than putting everything into repayment.
Fixed versus variable rates
A fixed rate stays the same for the whole term, so the payment is certain but the rate is usually higher. A variable rate is reviewed against market rates, starts lower and can rise later, taking the payment with it.
This tool assumes the rate you enter lasts the whole term, so treat the result as a guide, not a guaranteed future figure, if you choose a variable rate.
Loan Calculator FAQ
Which loans can I use it for?
Any equal-payment loan: mortgages, car loans, education loans and similar.
Fixed or variable rate?
The tool applies the rate you enter for the whole term. For a variable-rate loan, enter the current rate as a reference figure.
Can it simulate early repayment?
Not at present. Use it for the standard repayment schedule.