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Free finance calculator
Estimate monthly loan payments, total interest, total cost, payoff date, and how extra payments can shorten a loan.
Payment result
Estimate only. This is not financial advice or a loan offer.
Enter the amount you plan to borrow, the annual interest rate, and the loan term in years. The calculator estimates the regular monthly payment for a fixed-rate loan. Add an extra monthly payment to see how paying more than the minimum may reduce the payoff time and total interest.
A fixed loan payment is based on the loan amount, monthly interest rate, and number of monthly payments. Higher rates and shorter terms usually increase the monthly payment.
The payment formula spreads principal and interest across the full term. Early payments usually contain more interest, while later payments apply more toward principal as the balance drops.
Extra monthly payments reduce the principal faster. That can shorten the payoff timeline and lower total interest, especially early in the loan term.
This simple estimate does not include lender fees, late fees, taxes, insurance, variable rates, escrow, or prepayment restrictions. Always compare actual loan disclosures before borrowing.
If a lender offers a lower payment, check whether the term is longer, fees are higher, or optional products have been added. A payment can look easier while the total loan cost becomes more expensive.
For mortgages, auto loans, student loans, and personal loans, read the actual disclosure documents and ask how interest accrues, how extra payments are applied, and whether there are penalties or administrative fees. The calculator helps compare assumptions, but the contract controls the real payment rules.
Common mistakes include comparing only the monthly payment, ignoring total interest, forgetting origination fees, or assuming every extra payment automatically goes to principal. Ask the lender how extra payments are applied before relying on a payoff estimate.
Use the payoff date as a planning marker, not a contract promise. Actual payoff can shift if payment dates, fees, rate changes, or extra payments differ from the assumptions entered here.
Why is my payment only an estimate? Real loan offers may include fees, payment timing rules, escrow, insurance, and lender-specific terms.
Do extra payments always help? Extra principal payments usually reduce interest on amortizing loans, but check whether your lender has prepayment limits or fees.