Mortgage Early Payoff Calculator

On a $300,000 loan at 6.5% over 30 years, adding $500/month in extra payments saves roughly $152,000 in interest and pays off the loan about 11 years early. Total interest drops from approximately $382,000 to $230,000. Your exact savings depend on your loan amount, rate, and term — use the calculator above for your scenario.

An annuity (fixed-payment) mortgage has equal monthly payments for the full term; early payments are mostly interest, later ones mostly principal. A differentiated mortgage has a fixed principal portion each month plus declining interest, so payments start higher and decrease over time. Differentiated loans typically pay less total interest but require higher initial payments.

Mathematically, if your after-tax investment return exceeds your mortgage rate, investing may yield more. Extra mortgage payments guarantee a return equal to your interest rate (risk-free) and reduce debt. The right choice depends on your rate, risk tolerance, and whether you have higher-interest debt or insufficient emergency savings — pay those first.

It depends on your loan size, rate, term, and extra amount. For a $300,000 loan at 6.5% over 30 years, $500/month extra pays off the loan in about 19 years (11 years early). Smaller loans or larger extra payments shorten the term further. Use the calculator to see your exact payoff date.

Yes. One extra annual payment (applied to principal) reduces interest and shortens the term. On a $300,000, 6.5%, 30-year loan, one extra payment per year can save tens of thousands in interest and cut the term by several years. The calculator can model any extra payment amount (e.g. one-twelfth of your monthly payment each month) to show the impact.

That depends on your loan contract. Some mortgages have prepayment penalties if you pay off a large amount or refinance within the first few years. This calculator does not account for penalties. Check your loan documents or ask your lender before making large extra payments; in many jurisdictions prepayment penalties are limited or prohibited.

You must specify that extra payments go to principal. Some lenders apply extra funds to the next scheduled payment (interest first) unless you clearly designate 'principal only.' Always confirm with your lender and mark payments as principal-only when possible. Our calculator assumes extra payments go directly to principal, which maximizes interest savings.

Most conventional and FHA loans do not cap extra principal payments. Some mortgages limit how much you can pay in a year or charge fees above a threshold. Check your loan documents; many US loans allow unlimited prepayment. If there is a cap, paying up to that limit each year still saves significant interest.

Paying half your payment every two weeks (biweekly) results in 26 half-payments per year — one extra full payment annually. That can save tens of thousands in interest and shorten a 30-year loan by several years. The savings come from the extra payment, not from paying mid-month. Use the calculator with an extra payment equal to one-twelfth of your monthly payment to simulate this.

No. Paying off your mortgage early does not hurt your credit. A closed mortgage can stay on your report for up to 10 years as a positive paid-as-agreed account. Your score may dip briefly when the account closes (fewer open accounts, mix of credit changes) but typically recovers. The benefit of being debt-free usually outweighs any temporary score change.

Yes. For maximum interest savings, extra payments should go to principal only, not to future interest. When you pay principal, you reduce the balance that accrues interest. Paying ahead on interest does not reduce your balance or total interest. Always designate 'principal only' with your lender when making extra payments.

If you have private mortgage insurance (PMI), getting to 20% equity faster by paying extra principal can eliminate PMI sooner — often saving thousands in PMI premiums. Once you reach 20% equity, you can request PMI removal. Extra principal payments both cut interest and accelerate the path to dropping PMI. Use the amortization table to see when your balance reaches 80% of the original value.

Biweekly (26 half-payments per year) effectively adds one extra full payment per year. That is roughly equivalent to adding one-twelfth of your monthly payment every month. For a $300K loan at 6.5%, both approaches save similar interest — in the $40K–$50K range over the life of the loan. The best strategy is the one you will stick with; consistency matters more than the exact method.

Both reduce interest. A lump sum early in the loan saves more per dollar because it reduces principal for more months. For example, a $10,000 lump sum in year 1 on a $300K, 6.5%, 30-year loan can save about $15,000 in interest. Spreading $10,000 as $83/month over 10 years saves less — around $8,000 — but may be more feasible. If you have a windfall, a lump sum is mathematically stronger; if not, consistent monthly extra works well.

Refinancing to a 15-year loan locks in a shorter term and often a lower rate, but has closing costs (typically 2–5% of loan). Extra payments on a 30-year give flexibility: you can stop if income drops. Rule of thumb: if you can get a rate 0.75% or more lower and plan to stay 5+ years, refinancing may pay off. If you prefer flexibility or rates are similar, extra payments on your current loan are often simpler. Use our calculator to compare total interest under both approaches.