Mortgage Calculator with Extra Payments & PMI Removal Date

How This Calculator Works

Most mortgage calculators show you one number: your monthly payment. This one goes further by combining two things buyers almost always want to know together but rarely find in the same place — what happens to your payoff timeline when you add extra principal payments, and exactly when your private mortgage insurance (PMI) will fall off your bill as a result.

Extra Payments and Amortization

Every dollar you add to your monthly payment beyond the required principal and interest goes straight toward reducing your loan balance. Because mortgage interest is calculated on the remaining balance each month, a lower balance means less interest accrues going forward. Over time this compounds: each extra payment shortens the loan and reduces the total interest paid over its life, often by tens of thousands of dollars on a 30-year loan.

When Does PMI Go Away?

If your down payment was less than 20% of the home's value, your lender likely required PMI to protect against default risk. Under federal law, lenders must automatically cancel PMI once your loan balance drops to 78% of the home's original value, assuming you're current on payments. You can also request cancellation earlier, once you reach 80%, though the lender may require an appraisal. Extra payments can pull that date forward by months or years compared to the standard schedule.

Reading Your Results

The PMI removal date reflects the month your balance crosses the 78% threshold under your accelerated schedule. The payoff date shows your new loan-end month, while the comparison figures quantify how much time and interest your extra payments save versus paying only the required amount. The table below breaks down the full schedule month by month, with the PMI removal month highlighted.

Frequently Asked Questions

When is PMI automatically removed from my mortgage?

Under the federal Homeowners Protection Act, your lender must automatically cancel PMI once your loan balance reaches 78% of the home's original value, as long as you're current on payments. You can also request cancellation earlier, once you reach 80% (20% equity).

Do extra principal payments remove PMI faster?

Yes. Every extra dollar goes straight to principal, lowering your balance sooner, so you reach the 78–80% equity threshold months or even years earlier than the standard schedule. This calculator shows your accelerated PMI removal date based on the extra payment you enter.

Can I cancel PMI before reaching 20% equity?

Automatic cancellation happens at 78% of the original value, and you can request removal at 80% (20% equity). Some lenders allow earlier removal if a new appraisal shows your home's value has risen enough, though the lender may require you to pay for that appraisal.

How much will PMI cost me before it's removed?

It depends on your loan size and PMI rate, which is often between 0.3% and 1.5% of the loan amount per year. This calculator adds up the total PMI you would pay under your accelerated schedule so you can see the real dollar cost.

Is it worth paying extra just to drop PMI sooner?

Often yes. Removing PMI eliminates a charge that builds you no equity, and the same extra principal also reduces your total interest. Use the calculator to compare the time saved and interest saved against the extra amount you would pay each month.