Mortgage Calculator with PMI

What PMI Is and Why It Exists

Private mortgage insurance is not insurance for you. It protects the lender against part of the loss if you default and the foreclosure sale does not cover the balance. You pay the premium; the lender is the beneficiary.

Lenders require it on most conventional loans when the down payment is below 20%, because a thinner down payment leaves less of a cushion between the loan balance and the home's value. Once your equity crosses the thresholds set by the Homeowners Protection Act, the premium has to come off — which is the detail most borrowers never look at when they are comparing down-payment options.

The trade-off is simple to state and harder to judge: PMI lets you buy now with less cash, at the cost of a monthly premium you would not otherwise pay. The rest of this page puts numbers on both sides.

The Example: $300,000 Loan at 10% Down

A 10% down payment on a $333,333 home means borrowing $300,000. At 6.5% over 30 years the principal-and-interest payment is $1,896. A $150.00 monthly PMI premium — the equivalent of 0.6% a year on the loan — takes the total to $2,476.76 once property tax and insurance are counted.

PMI is 6.1% of that payment — real money, but a smaller share than the interest itself. The more useful question is how long you pay it.

When PMI Ends

These general U.S. rules cover many borrower-paid PMI mortgages on single-family primary residences closed on or after July 29, 1999. Confirm eligibility with your servicer.

At 80% of original value, you can request cancellation in writing, including early if extra payments reach that threshold. You must be current, have a good payment history, certify no junior liens and provide evidence that the property value has not declined. This example reaches 80% in month 95; cancellation is not automatic.

Automatic termination generally occurs when the balance is scheduled to reach 78% of original value, if you are current. This example reaches that point in month 109. Extra payments do not move the scheduled date, although they can support an earlier cancellation request.

If PMI remains, final termination occurs the month after the midpoint of the original amortization schedule, provided you are current: month 181 for a 30-year term.

The illustrative example counts 109 premiums of $150, or $16,350. This is only the insurance cost, not the full cost of a smaller down payment. Confirm the termination date and final premium with your servicer; the calculator’s PMI field is a monthly input, not a quote or a cancellation request.

What 20% Down Would Cost Instead

Holding the house constant and changing only the down payment is the comparison that matters. Buy the same $333,333 home with 20% down and the loan drops to $266,667, so the principal-and-interest payment falls to $1,686 and the monthly total lands at $2,116.07 — with no PMI at all.

Putting 20% down requires approximately $33,333 more cash and lowers the initial monthly payment by $360.69 under these assumptions. That reduction is not constant throughout the loan: it includes $150 of PMI that eventually ends.

Do not divide the extra down payment by monthly savings and call it a payback period. Down payment becomes home equity, not a lost fee. Compare interest, premiums, remaining balances, cash reserves and alternative uses of the money over the same period. This table does not establish that waiting to buy is better.

How Lenders Price PMI

Premiums are quoted as a percentage of the original loan amount per year, most often somewhere between 0.5% and 1.5%. Two inputs drive where you land: your credit score and your loan-to-value ratio. A borrower with a high score and 10% down pays far less than one with a thin file and 3% down, even on an identical house.

Other Ways Out of PMI

1. Wait it out and ask. Diary the month your balance is scheduled to cross 80% of the original value and send the request then. Servicers do not always volunteer it.
2. Pay the balance down faster. Because the thresholds are measured against the balance, extra principal payments pull the cancellation date forward. Run your numbers in the extra-payments calculator to see how far.
3. Order a new appraisal. If the market has moved in your favour, many servicers will accept a current appraisal instead of the original value, usually once the loan has seasoned for two years.
4. Refinance. A new loan replaces the old one entirely. It only pays off if the new rate and the closing costs beat what you are giving up — price it in the refinance calculator before you commit.
5. Lender-paid mortgage insurance. Some lenders offer a slightly higher interest rate in place of a separate premium. Compare the two on total cost, not on the monthly payment alone.

Frequently Asked Questions

When does PMI come off my mortgage automatically?

For many U.S. conventional mortgages, PMI terminates automatically when the balance is scheduled to reach 78% of original value, if you are current; this example reaches that point in month 109. You can request cancellation at 80%, here in month 95, but must make a written request and meet payment-history, lien and property-value conditions. Confirm eligibility and the final premium with your servicer.

Is PMI the same thing as FHA mortgage insurance?

No. This page covers borrower-paid PMI on U.S. conventional mortgages. FHA loans, VA loans and lender-paid insurance follow different rules. Ask your servicer; do not automatically apply the 80% and 78% thresholds.

Can I drop PMI early if my home has gone up in value?

Usually yes, but through a different route. The automatic and requested thresholds in federal law are measured against the original property value, so a rising market does not trigger them by itself. Most servicers will, however, accept a new appraisal showing that you have reached the loan-to-value they require, typically once the loan has seasoned for at least two years. Ask your servicer which threshold it uses and whether it orders the appraisal. The other option is to refinance, which replaces the loan entirely.

How much does PMI usually cost?

PMI is quoted as a percentage of the original loan amount per year, most often somewhere between 0.5% and 1.5%. Your credit score and your loan-to-value ratio set where you land inside that band. On a $300,000 loan the range works out to between $125.00 and $375.00 a month. The example on this page uses $150.00 a month, which is 0.6% a year on the loan.

References

• CFPB — When can I cancel private mortgage insurance (PMI)?: the borrower-requested cancellation, automatic termination, and final termination rules in plain language.
• Consumer Financial Protection Bureau — Owning a Home: the official U.S. guide to shopping for a mortgage and comparing loan offers.
• Federal Housing Finance Agency (FHFA): the U.S. regulator overseeing Fannie Mae and Freddie Mac, whose guidelines set the conventional-loan rules PMI is attached to.

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