Mortgage Extra Payment Calculator

Start with your regular principal-and-interest payment, add the extra amount to principal each month, then recalculate next month's interest on the smaller balance. This calculator does that month by month, so it can show the exact payoff date and interest saved instead of using a rough shortcut.

A regular mortgage calculator gives the scheduled payment and payoff date. A mortgage extra payment calculator keeps that regular payment, then applies extra principal payments to show how much sooner the loan ends, how much interest disappears, and whether PMI can be removed earlier.

On a typical $382,500 loan at 6.5% over 30 years, $200 extra per month finishes the loan about 5 years and 9 months early and avoids roughly $110,000 of interest. The effect is front-loaded: extra dollars in the early years kill principal that would have compounded interest for decades, so starting now beats starting bigger later.

Dollar for dollar, monthly extras win slightly because the principal drops sooner and stops accruing interest earlier in the year. The difference is small, though - the best structure is whichever you will actually sustain. Tax-refund season lump sums are a popular compromise; this calculator models both at once so you can compare.

Yes, through simple arithmetic rather than magic: 26 half-payments equal 13 full payments a year instead of 12. That extra payment per year shortens a 30-year loan by roughly 5-6 years at current rates. You can replicate it without enrolling in a bank program by adding one-twelfth of your payment to each month - which is exactly how the biweekly toggle here models it.

Two milestones matter under the Homeowners Protection Act: at 80% loan-to-value (based on the original home value) you can REQUEST cancellation in writing, and at 78% the servicer must terminate PMI automatically. The gap between those two points is money you never legally owed - on this page's example it spans more than a year of premiums.

No - your required payment stays identical; extras shorten the timeline instead. The exception is a recast: some servicers will re-amortize the loan after a large lump sum (often $5,000+ and a small fee), which does lower the monthly payment while keeping your rate. Ask your servicer if lowering the payment is your actual goal.

Yes, always. Unallocated extra money is sometimes applied to next month's payment (prepaying interest) or held in suspense rather than reducing principal. Use the "principal only" option in your servicer's payment portal, or include explicit instructions - then check the next statement to confirm the balance dropped by the full extra amount.

Paying extra earns a guaranteed, tax-free return equal to your mortgage rate - 6.5% here. Long-run stock returns have averaged higher, but they are not guaranteed and are taxable. The honest answer is that a 6.5% risk-free return is genuinely competitive, while at a 3% pandemic-era rate the math favors investing. Many households split the difference.

Both happen, at different points. Automatic termination is required only at 78% of the original value - but you can request cancellation at 80%, and servicers do not send a reminder when you get there. The request typically requires a good payment history and no second liens. Set a calendar alert for the removal date this calculator shows.

Often, yes. If your home's market value has risen, a new appraisal can push your current LTV under 80% years before the original schedule - most servicers allow this after two years of ownership (rules vary; some require 75% LTV based on the new value). A $500-700 appraisal that removes $175 of monthly PMI pays for itself in months.

Almost never on conforming US loans originated after 2014 - the CFPB's qualified-mortgage rules effectively eliminated them. A small number of non-QM or investor loans still carry penalties during the first few years, so check your closing disclosure. If your loan has one, it will be listed there explicitly.