What is PMI? Private Mortgage Insurance Explained

May 2025 5 min read Mortgage & Home Buying

If you're buying a home with less than 20% down, your lender will likely require private mortgage insurance — PMI. It's one of the most misunderstood costs in homeownership, and knowing how it works can save you thousands of dollars.

In simple terms: PMI protects the lender — not you — if you default on the loan. You pay for it, but it provides zero direct benefit to you as a borrower.

How Much Does PMI Cost?

PMI typically costs between 0.5% and 1.5% of the loan amount per year, depending on your credit score, down payment, and loan type. It's usually added to your monthly mortgage payment.

PMI cost on a $300,000 loan

PMI at 0.5% annually$125/month
PMI at 1.0% annually$250/month
PMI at 1.5% annually$375/month
Total PMI paid over 5 years (at 1%)~$15,000

When is PMI Required?

PMI is required on conventional loans when your down payment is less than 20% of the home's purchase price. FHA loans have their own version called MIP (mortgage insurance premium), which works differently and can last the life of the loan.

How to Remove PMI

1

Reach 20% equity automatically

By law, lenders must cancel PMI when your loan balance reaches 78% of the original purchase price — as long as you're current on payments.

2

Request cancellation at 80% LTV

You can request PMI removal when your balance reaches 80% of the original value. You may need a home appraisal to confirm the value.

3

Refinance your mortgage

If your home has appreciated significantly, refinancing with 20%+ equity eliminates PMI — though you'll pay closing costs.

4

Make extra principal payments

Paying down your principal faster gets you to 20% equity sooner and removes PMI earlier.

How to Avoid PMI Altogether

The simplest way is a 20% down payment. If that's not possible, some lenders offer "piggyback loans" — a second mortgage to cover part of the down payment — or lender-paid PMI where the cost is built into a slightly higher interest rate instead.

See your mortgage with and without PMI

Our mortgage calculator shows your full monthly payment including PMI based on your down payment.

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Frequently Asked Questions

Is PMI tax deductible?
PMI deductibility has varied over the years depending on tax law. Consult a tax professional for the current rules, as this changes frequently.
Does PMI go away on its own?
Yes — lenders are required by the Homeowners Protection Act to automatically cancel PMI when your loan balance reaches 78% of the original purchase price, as long as you're current on payments.
Is it better to put 20% down to avoid PMI or invest the difference?
It depends on PMI cost vs investment returns. If PMI costs 1% and you can invest at 7%+, investing may be better long-term. But PMI adds risk if the housing market declines.