How PMI removal actually works
Private mortgage insurance protects your lender, not you, in case you default on a loan with less than 20% down. The Homeowners Protection Act of 1998 gives you two paths to stop paying it.
The first is automatic termination. Once your loan balance reaches 78% of the original property value (based on the original amortization schedule), your lender is required by federal law to remove PMI. You don't have to ask.
The second is borrower-requested cancellation. When your balance reaches 80% of the original value, you have the legal right to request removal in writing. Your lender must honor the request as long as you're current on payments, have a satisfactory payment history, and the home value has not declined.
The gap between 80% and 78% is where most homeowners lose money. The waiting period at 80% can be 12 to 18 months on a typical 30-year loan, and during those months you're paying PMI you don't legally have to pay.
Why most homeowners overpay
Servicers don't notify you when you hit 80%. They notify you when you hit 78%, because that's when they're required to terminate PMI on their own. Until then, you're expected to know your loan-to-value ratio and request removal yourself.
Most homeowners don't track loan-to-value monthly, so they miss the 80% milestone entirely. The calculator above shows exactly when you'll hit 80% and how much PMI you'll pay between then and the auto-termination date if you don't request removal.
Three ways to speed it up
The 80% milestone moves in based on your scheduled amortization. You can pull it forward in three ways:
Make extra principal payments. Adding even $200 a month to principal can shave a year or more off the time to 80% loan-to-value. The calculator includes an "extra principal" input so you can see exactly how much PMI you save by accelerating.
Use a lump sum. Tax refunds, bonuses, inheritances, sale proceeds. Apply directly to principal (not to escrow or future payments) and you can shave months or years off your PMI payment timeline. The math is simple: every dollar that goes to principal early reduces both your loan balance and your loan-to-value ratio.
Get an appraisal. If your home has appreciated meaningfully since you bought it, a new appraisal showing higher market value can put you over the 80% threshold based on current value rather than original value. Some lenders accept this; some don't. Cost is typically $300 to $600. Confirm your servicer's policy before paying for the appraisal.
When refinancing makes more sense
If today's rates are below your current rate, refinancing can eliminate PMI and lower your payment simultaneously. The new loan is typically structured at 80% loan-to-value automatically, so PMI is gone from day one.
The math depends on the rate spread, the refinance closing costs, and how long you'll keep the home. Run our refinance comparison calculator to see when refinancing beats waiting for PMI to drop off naturally.
Frequently asked questions
When does PMI automatically end?
Under the Homeowners Protection Act, your lender must automatically terminate PMI when your loan-to-value reaches 78% of the original property value. This is calculated using the original amortization schedule, not actual payments made.
Can I request PMI removal before 78%?
Yes. At 80% loan-to-value, you have the legal right to submit a written request. Your lender must honor it if you're current on payments and have a satisfactory payment history.
What does PMI cost on average?
PMI typically costs 0.46% to 1.5% of the loan amount per year. On a $400,000 loan, that's $150 to $500 per month. Your specific premium depends on credit score, down payment, and loan-to-value at origination.
Does FHA mortgage insurance work the same way?
No. FHA loans use mortgage insurance premium (MIP), which generally cannot be removed at 80% loan-to-value. For most FHA loans, the only way to drop MIP is to refinance into a conventional loan.