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Mortgage · 2026-07-14 · Updated 2026-07-28

What Is PMI? Private Mortgage Insurance Explained

What is PMI? Learn how private mortgage insurance works, when you need it, how much PMI costs, when you can remove it, and how to avoid PMI when buying a home.

Private mortgage insurance (PMI) is an additional cost that may apply when you buy a home with a conventional mortgage and make a down payment of less than 20%. PMI protects the lender—not the borrower—if the borrower stops making mortgage payments. Understanding what PMI is, how much it costs, when you can remove it, and how to avoid it can help you compare mortgage options and estimate the true cost of buying a home.

What Is PMI?

PMI stands for private mortgage insurance. It is insurance that protects a mortgage lender if a borrower defaults on a conventional home loan. PMI does not protect the homeowner from losing the home or eliminate the borrower’s responsibility to repay the mortgage. For many conventional mortgages, PMI may be required when the down payment is less than 20% of the home purchase price.

When Is PMI Required?

PMI is commonly required for conventional mortgages when the loan-to-value (LTV) ratio is above 80%, which generally means the borrower makes a down payment of less than 20%. However, PMI requirements vary by lender, loan program, borrower qualifications, and the specific mortgage terms.

How Much Does PMI Cost?

The cost of PMI varies based on factors such as the borrower’s credit profile, down payment, loan amount, loan-to-value ratio, and lender or mortgage insurer requirements. PMI is commonly expressed as an annual percentage of the mortgage balance and is often divided into monthly payments.

How Long Do You Have to Pay PMI?

For many conventional mortgages, PMI is not intended to last for the entire loan term. Under applicable federal rules, borrowers may generally request PMI cancellation when the mortgage balance reaches 80% of the home’s original value, subject to eligibility requirements. Automatic termination may generally occur when the balance is scheduled to reach 78% of the original value, provided applicable conditions are met and the borrower is current on payments.

How to Avoid PMI When Buying a Home

The most straightforward way to avoid borrower-paid PMI on a conventional mortgage is to make a sufficiently large down payment. However, avoiding PMI is not always the same as minimizing your total borrowing cost. A larger down payment may reduce PMI and mortgage interest, but it also requires more cash upfront.

Is PMI Always Bad?

No. PMI is an additional cost, but it can help some borrowers purchase a home without waiting until they have saved a 20% down payment. The financial question is not simply whether PMI is good or bad. Instead, compare the cost of PMI with the potential benefits of buying sooner, building home equity, and preserving cash for emergencies and other financial goals.

PMI vs FHA Mortgage Insurance: What Is the Difference?

PMI and FHA mortgage insurance are not the same. PMI is associated with many conventional mortgages and may be cancellable under applicable rules. FHA loans use an upfront mortgage insurance premium (UFMIP) and an annual mortgage insurance premium (MIP), with duration depending on factors such as the loan-to-value ratio and loan term. Because the rules differ, borrowers should compare the complete cost of conventional and FHA financing rather than assuming that one option is always cheaper.

Should You Wait Until You Have 20% Down?

Not necessarily. Waiting until you have 20% down can reduce or eliminate PMI on a conventional mortgage, but it may also delay homeownership and require you to keep saving while housing costs and home prices change. The better decision depends on your income, savings, expected time in the home, mortgage payment, and financial reserves.

How to Decide if PMI Is Worth Paying

The best way to evaluate PMI is to compare the total cost of buying with and without PMI. Consider your down payment, mortgage rate, PMI cost, monthly payment, expected time in the home, emergency savings, and alternative uses for your cash. A smaller down payment may be reasonable if it preserves liquidity and the total monthly housing cost remains comfortably affordable.

PMI Frequently Asked Questions

Here are quick answers to common questions about private mortgage insurance.

Final Thoughts: Is PMI Worth It?

PMI is an additional mortgage cost, but it is not automatically a bad financial decision. It can help qualified borrowers purchase a home with a smaller down payment while preserving cash for emergencies and other goals. The key is to understand how much PMI costs, how long you may have to pay it, and how it affects your total housing expense. Before deciding whether to put 20% down or buy with a smaller down payment, compare the complete cost of each option and make sure the monthly payment fits comfortably within your budget.

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Frequently Asked Questions

What affects a mortgage payment?

Mortgage payments are affected by loan amount, interest rate, repayment term, property taxes, and insurance costs.

Does a lower interest rate reduce mortgage costs?

Yes. A lower interest rate usually reduces monthly payments and total interest paid.

What is an amortization calculator?

An amortization calculator is a tool that creates a loan repayment schedule showing monthly payments, principal, interest, and remaining balance.

What is a home affordability calculator?

A home affordability calculator estimates how much home you may be able to afford based on income, expenses, down payment, and mortgage costs.

Does paying extra on a mortgage reduce interest?

Yes. Extra payments applied to principal reduce the loan balance and can lower the total interest paid over the life of the mortgage.

Should I pay extra on my mortgage or invest?

The best choice depends on your mortgage rate, investment goals, risk tolerance, and financial situation. Paying extra provides guaranteed interest savings, while investing offers potential growth with risk.

How much extra should I pay on my mortgage?

The right extra payment amount depends on your budget, financial goals, emergency savings, and other investments. Even small additional payments can reduce interest costs over time.

Can I pay off my mortgage early?

Yes. Many homeowners make additional principal payments or larger payments to shorten their mortgage term and reduce total interest.

Is paying off a mortgage early always the best choice?

Not always. Homeowners should consider liquidity needs, retirement savings, investment opportunities, and mortgage interest rates before deciding.

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