Loan & Mortgage Simulator
Payments, interest, repayment types and amortization schedule
How it works
Enter the amount, annual rate and term, then tune any detail: pick a repayment type (equal-payment annuity, equal-principal with declining payments, or interest-only with a balloon at the end), pay interest only for an initial period, add a down payment or extra monthly payments, choose a currency and a past or future start date. The tool computes the payment(s), total interest and total cost, draws the remaining-balance curve, and lays out a year-grouped amortization schedule with real calendar dates. Everything defaults to a standard fixed-rate mortgage and updates instantly.
Frequently asked
Which repayment types are supported?
Equal-payment (annuity) — a fixed monthly payment; equal-principal — a fixed principal portion each month with a declining payment; and interest-only — pay only interest with the full principal due as a balloon at the end. You can also make an annuity loan interest-only for an initial period.
Can I model extra payments?
Yes. Add an extra monthly amount and the tool shows the months and interest saved versus the baseline schedule and the earlier payoff date.
Can the start date be in the future?
Yes — pick any past or future start month; the amortization schedule and payoff are labeled with the corresponding calendar dates.
How is the monthly payment calculated?
With the standard fixed-rate amortization formula based on the principal, the monthly interest rate and the number of months. A 0% rate divides the principal evenly across the term.