Free Mortgage & Home Finance
Calculators
Get exact numbers for your home purchase, refinance, or rent-vs-buy decision — instantly in your browser. No account, no lender calls, no data stored.
10 Free Mortgage & Home Finance Calculators
Extra Mortgage Payment Calculator: Interest Saved & Years Cut
Making even a small extra payment toward principal each month can shave years off your mortgage and save tens of thousands in interest. This calculator shows you the exact impact of any extra payment amount — monthly, annual, or a one-time lump sum — against your specific loan.
Why OwnCalc Numbers Are Accurate
Every calculation runs inside your browser. Nothing leaves your device. Nothing is ever stored or shared.
1. Enter your numbers
Type in your home price, income, or loan details. Every field has sensible defaults — start in seconds.
2. Results appear instantly
No submit button. No loading spinner. Results update live as you adjust each field so you can explore scenarios in real time.
3. Make a confident decision
Walk into any lender meeting or open house knowing your exact numbers — based on your real inputs, not guesswork.
How to use this calculator
Enter your current loan balance, interest rate, remaining term, and regular monthly payment.
Add the extra amount you're considering — monthly additional principal, a yearly lump sum, or a one-time payment.
Compare your original payoff date to the new one and see total interest saved in dollars.
Extra Mortgage Payment Calculator: Interest Saved & Years Cut — common questions
Mortgage & Home Finance Questions Answered
Straight answers to the questions homebuyers and owners search for most.
2026 Mortgage Rates & Home Prices by State
Average 30-yr and 15-yr fixed rates, median home prices, estimated monthly payments, and affordability scores for all 50 US states. Q1 2026 data.
💡 Click Mortgage to calculate your monthly payment at that state's rate and median price, or Refinance to see if switching to today's rate could save you money on your existing loan.
| State ↕ | 30-Yr Fixed ↕ | 15-Yr Fixed ↕ | Median Price ↕ | Use Rate |
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Use your state's rate in our calculators
Plug your state's rate into the Mortgage Calculator for a personalized monthly payment.