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What is PMI? A Comprehensive Guide to Private Mortgage Insurance

By FastCalc Editorial June 30, 2026 5 min read

If you are planning to purchase a home with a down payment of less than 20%, you will likely encounter Private Mortgage Insurance (PMI). While PMI is a standard requirement for conventional mortgages, many buyers do not fully understand what it is, how much it costs, or how to get rid of it.

What is PMI and Why is it Required?

Private Mortgage Insurance is a type of insurance policy that protects the lender (not you) in case you default on your home loan. Lenders view borrowers who make small down payments as higher-risk. PMI serves as a financial safety net, allowing lenders to offer conventional financing to buyers who cannot afford a 20% down payment.

PMI is typically structured as a monthly premium that is added directly to your monthly mortgage bill (PITI). The cost of PMI generally ranges from 0.3% to 1.5% of the original loan amount annually, divided into 12 monthly installments.

Key Factors Affecting Your PMI Cost

Your actual monthly PMI rate is determined by several factors, including:

  • Down Payment Percentage: The closer your down payment is to 20%, the lower your PMI rate will be. A 3% down payment will have a significantly higher premium than a 10% or 15% down payment.
  • Credit Score: Credit score is a major factor in PMI pricing. Borrowers with excellent credit (740+) pay much lower rates than those with fair credit (620-680).
  • Loan Type: Fixed-rate mortgages generally have lower PMI rates than adjustable-rate mortgages (ARMs).

How to Avoid and Cancel PMI

The most straightforward way to avoid PMI is to make a down payment of at least 20%. If you cannot afford that upfront, you can cancel your monthly conventional PMI once you build 20% equity in your home. By law, lenders must automatically terminate conventional PMI when your loan balance reaches 78% of the original purchase price, or you can request cancellation in writing once your balance drops to 80% through principal payments or rising home values.


Frequently Asked Questions

1. Does PMI protect me if I lose my job?

No. PMI protects the mortgage lender from financial loss if you default on the loan. It does not protect you or cover your payments.

2. Is PMI permanent on conventional loans?

No. Conventional PMI can be cancelled once you reach 20% home equity. This is different from FHA loans, where mortgage insurance is often permanent.

3. Can I pay PMI upfront?

Yes. Some lenders offer single-premium PMI, where you pay a one-time fee at closing instead of monthly payments.

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