Mortgage & Loan Payoff
Monthly payment, total interest, and payoff timeline.
Every calculation runs locally in your browser. Nothing you enter here is sent to a server or stored anywhere.
Monthly payment
$2,212
Total interest paid
$446,406
Total paid
$796,406
Remaining balance over time
For informational and educational purposes only — not financial, investment, or tax advice, and not a substitute for consulting a qualified professional about your specific situation. TrueMeasureKit is not liable for decisions made based on these results. See our Terms of Service.
How extra payments shorten a loan
Every mortgage payment splits into interest (the cost of borrowing) and principal (what actually reduces your balance). Early in the loan, interest dominates because the balance is still high. An extra monthly payment goes straight to principal, which lowers the balance faster and reduces every future interest calculation — a small, consistent overpayment compounds into years of saved payments and thousands in saved interest.
Frequently asked questions
What formula does this calculator use?
The standard fixed-rate amortization formula: it solves for the payment that fully pays off the principal, plus all accrued interest, over the loan term at a constant monthly rate.
Does the monthly payment include taxes and insurance?
No — this is principal and interest (P&I) only. Property tax, homeowners insurance, and PMI are billed separately and vary too much by location and policy to estimate generically.
Why does so little of my early payments go to principal?
That's how amortization works: interest is charged on the remaining balance, which is largest at the start, so early payments are interest-heavy and later payments are principal-heavy — even though the total payment stays flat.