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Estimate principal-and-interest mortgage payments, total borrowing cost, and payoff timing from loan amount, rate, and term.
What this tool helps you answer
Use this when you need to see beyond the monthly payment: to understand how interest and principal split over time, how much the loan really costs, and whether extra payments are worth making.
The monthly payment is just one number: the schedule tells the full story.
M = P[r(1+r)^n]/[(1+r)^n-1]Next step
Use a mortgage-focused payment calculator to check monthly payment, total interest, and the impact of extra payments before you rely on a home-budget scenario.
Editorial review
This page combines the live tool, input guidance, worked examples, and operating limits so Mortgage Calculator stays useful even before users interact with the calculator.
Reviewed by Klartext Tools against the current Mortgage Calculator workflow on 2026-02-24.
Last updated:
Use with judgment
Page scope
$250,000 loan at 5.8% over 30 years: the default baseline.
Shows monthly payment, total interest paid, and full monthly schedule.
Same $250,000 loan with $300 extra per month to show how much time and interest it saves.
Shows years cut from the loan and total interest saved versus the baseline.
Use this page when you want a fast monthly mortgage payment estimate and a clearer view of total borrowing cost over the full term.
Use the actual amount you expect to borrow after subtracting down payment, not the sticker price of the home.
Use the rate and repayment horizon you can realistically qualify for, then check how sensitive the payment is to small changes.
Use the extra payment field to see whether modest monthly overpayments materially reduce interest and payoff time.
If the mortgage payment looks workable, move to the affordability planner to include taxes, insurance, PMI, and a fuller housing budget.
Load an example to explore how the schedule responds before entering your own loan details.
$250,000 loan at 5.8% over 30 years: the default baseline.
Sample inputs
Sample outcome: Shows monthly payment, total interest paid, and full monthly schedule.
Same $250,000 loan with $300 extra per month to show how much time and interest it saves.
Sample inputs
Sample outcome: Shows years cut from the loan and total interest saved versus the baseline.
Monthly payment calculators give you one number. A full amortization schedule shows you why the balance barely moves in the early years: in the beginning, most of each payment is interest rather than principal reduction. Seeing the complete schedule month by month, with the exact principal and interest split, changes how most people think about debt repayment. This calculator also quantifies how extra payments shift the payoff date and reduce total interest paid, so you can evaluate whether overpaying is worth it for your specific loan.
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Common questions about loan schedules and interest.
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