Amortization Schedule Calculator
Estimate amortization schedule in seconds with this free online Amortization Schedule Calculator. No account, no spreadsheets — just accurate numbers.
Monthly Payment
$1,863.93
- Amount Financed
- $250,000.00
- Total Interest
- $197,343.88
- Total Cost
- $447,343.88
- Estimate only — actual terms vary by lender.
Results Graph
- Monthly Payment$1,864 · 0%
- Amount Financed$250,000 · 28%
- Total Interest$197,344 · 22%
- Total Cost$447,344 · 50%
How We Calculate Results
This calculator uses the standard amortized-loan payment formula, M = P × [i(1+i)ⁿ] / [(1+i)ⁿ − 1], where P is the amount financed (your loan amount minus any down payment), i is the interest rate converted to a monthly rate, and n is the total number of monthly payments over the loan term.
Once the fixed monthly payment is known, it’s multiplied by the number of payments to find the total amount paid, and total interest is simply that total minus the amount financed — the same math lenders use to generate an amortization schedule.
The result is based on the inputs you provide and the assumptions described below. Learn more about how WIN Calculator develops and reviews its calculations.
Example
For example, try comparing two scenarios with this calculator — a shorter vs. longer term, or a larger vs. smaller down payment — to see how each assumption below changes the result.
Assumptions
- Rates you enter are annual figures, treated as fixed for the period modeled, unless the calculator has a dedicated field for a variable or adjustable rate.
- Unless a calculator has explicit fields for taxes, insurance, PMI, or fees, those costs are excluded from the result — see the Taxes & Fees section of our full methodology.
- Payments are assumed to be made on schedule and in full, with no missed, early, or extra payments unless the calculator has fields for them.
Limitations
- Results are estimates for planning purposes only — not a loan offer, rate quote, pre-approval, or investment, tax, or legal advice.
- Real lenders and institutions may apply rounding, fee structures, or compounding conventions that differ slightly from the standard formulas used here.
Sources
- Standard amortization and time-value-of-money formulas used throughout personal finance and by regulators such as the Consumer Financial Protection Bureau (CFPB).
- Federal Reserve and IRS published guidance for rate- and tax-related calculators.
Validation
- Every formula in our calculator library is covered by an automated regression test suite that checks its output against known reference values before any code change ships.
- Formulas are written from publicly documented sources — standards bodies, government agencies, or established textbooks — rather than derived from scratch, and are reviewed again whenever the underlying guidance changes.
About the Amortization Schedule Calculator
The Amortization Schedule Calculator is a free online tool built for financial planning — comparing loans, tracking savings goals, or estimating taxes before you commit to a number. Estimate amortization schedule in seconds with this free online Amortization Schedule Calculator. No account, no spreadsheets — just accurate numbers. It’s part of our Financial calculator collection — loans, mortgages, investing, retirement, taxes, and more.
Results are calculated instantly in your browser using standard, widely accepted formulas for this type of calculation, and are intended for general estimation and educational purposes rather than as a substitute for professional financial, medical, or legal advice.
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