How It Works — In 3 Simple Steps
No spreadsheets, no financial advisor. Just the math you need.
1. Enter Your Numbers
Type your remaining balance, interest rate, and how many years are left. Then add whatever extra you can put toward your mortgage each month.
2. Hit Calculate
We run the amortization math instantly — no waiting, no loading screens. You'll see exactly how much interest disappears and how many months you cut.
3. Decide Your Move
Try different extra payment amounts. See what happens if you add $100, $300, or $500. Pick the number that feels right for your budget.
3 Ways to Pay Off Your Mortgage Faster
Each strategy works differently. Pick the one that fits your cash flow.
💵 Extra Monthly Payment
Add a fixed amount to every monthly payment. Even $100 extra can shave years off your loan because every dollar goes straight to principal. This is the easiest strategy to start today.
📅 Biweekly Payments
Pay half your monthly amount every two weeks. Since there are 26 biweekly periods per year, you end up making 13 full payments instead of 12 — one extra payment per year, automatically.
🎁 One-Time Lump Sum
Put a windfall — tax refund, bonus, inheritance — directly toward principal. A single large payment can cut months instantly. Combine it with monthly extras for the biggest impact.
Frequently Asked Questions
Everything people ask after running the numbers.
Monthly extra payments usually win on total interest saved, because the money reduces your balance earlier and every dollar of principal you knock off stops accruing interest immediately. A lump sum still helps a lot and gives instant peace of mind — it's the better choice if you just received a windfall and want a guaranteed result without changing your monthly budget.
Shortening the term saves the most interest because you eliminate payments entirely. Lowering your monthly payment frees up cash flow but keeps you in debt longer and usually costs more overall. If your priority is total savings, shorten the term. If your priority is monthly breathing room, lower the payment — but keep making extra payments when you can.
Some mortgages do have prepayment penalties, especially certain fixed-rate loans or loans in some countries. Check your loan agreement or call your lender before making large extra payments. Penalties often apply only during the first few years, so the timing of your extra payment matters.
Start with an amount that doesn't strain your budget — even $50 or $100 makes a measurable difference over time. Use the calculator above to test a few numbers and see the interest saved for each. The best extra payment is the one you can sustain every month without dipping into your emergency fund.
No. Paying down principal faster reduces your loan balance, which can actually help your credit profile over time by lowering your debt-to-income ratio. Extra payments are not reported negatively. Just make sure your lender applies the extra amount to principal, not to next month's scheduled payment.
It depends on your mortgage rate versus expected investment returns, and on your risk tolerance. Paying off the mortgage is a guaranteed return equal to your interest rate. Investing offers potentially higher returns but with risk. Many people do both — make extra payments for guaranteed savings while continuing to invest. This is a general comparison, not financial advice.
Not always. Some lenders apply extra funds to the next scheduled payment unless you specify "apply to principal." Contact your lender or check your online payment settings to confirm how extra payments are handled. This one step can make the difference between saving interest and simply paying ahead.
It uses standard amortization math based on the numbers you enter. Real results can differ slightly because of escrow, taxes, insurance, lender fees, and the exact day payments post. Use the result as a solid planning estimate, then confirm final figures with your lender.
About This Calculator
PayoffCalc is a free, no-sign-up mortgage payoff calculator built for people who want a straight answer: how much can I save if I pay a little extra each month? We built it because most calculators bury the result under forms and ads. This one gives you the number first, then explains what it means.
We don't store your numbers. Everything runs in your browser. This tool provides estimates for planning purposes only and is not financial advice.
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Contact
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