What PMI Is and How It Affects Your Mortgage

Private mortgage insurance, usually called PMI, is insurance on many conventional U.S. mortgages when the down payment is below 20%. It does not insure your furniture or your ability to make payments. It reduces the lender’s loss risk when a borrower puts less than a fifth down.

If you are shopping with a down payment under 20%, PMI is often part of the monthly cost until equity rules allow cancellation or the loan is replaced. Government-backed loans use related but different insurance structures; this guide focuses mainly on conventional PMI with notes where FHA differs.

Why lenders care about a 20% cushion

A smaller down payment means a larger loan relative to the home’s value. If prices fall or foreclosure costs pile up, the lender’s recovery risk rises. PMI is the market’s way of pricing that risk into the loan rather than simply refusing low-down-payment lending.

For borrowers, PMI is a trade: buy sooner with less cash upfront, pay an extra monthly (or sometimes upfront) amount until equity improves.

PMI is not homeowners insurance

Homeowners insurance covers certain damage to the home and related liabilities. PMI covers lender credit risk. You typically need both on a mortgaged home. Confusing the two leads people to think canceling PMI removes property coverage—it does not.

How PMI is priced in everyday terms

Insurers and lenders look at loan-to-value ratio, credit profile, loan type, and sometimes occupancy and property features. Pricing is often expressed as a percentage of the loan amount per year, collected monthly through escrow.

Labeled sketch: on a $360,000 loan, annual PMI of 0.5% would be $1,800 a year, or $150 a month. If the full housing payment without PMI was $2,400, PMI pushes it to $2,550. That $150 belongs in affordability math from day one.

Actual quotes vary widely. Use your Loan Estimate, not a blog percentage, for decisions.

Borrower-paid monthly PMI versus other structures

The common pattern is borrower-paid monthly PMI. Alternatives can include lender-paid PMI built into a higher interest rate, or split premiums. Lender-paid structures can reduce the separate PMI line while raising the note rate for as long as you keep the loan. Monthly borrower-paid PMI can often be removed later; a higher rate from lender-paid PMI does not automatically fall when equity rises unless you refinance.

Ask which structure you are being offered and whether PMI can be canceled without refinancing.

Removing conventional PMI

On many conventional loans, two ideas matter: borrower-requested cancellation and automatic termination under federal rules for covered loans when you are current and the scheduled loan-to-value reaches the required level based on the original value.

Borrowers often request cancellation around 80% loan-to-value based on the original appraisal value, following servicer requirements such as a good payment history and sometimes a new appraisal if values or rules demand proof. Automatic termination can arrive later on the schedule even if you never request cancellation, when the amortization schedule hits the required threshold.

Home price appreciation can help you reach cancellation sooner if the servicer accepts a current value through the proper process. Declining values can delay cancellation even if you have paid for years.

FHA mortgage insurance is different

FHA loans use mortgage insurance premiums with their own upfront and annual structures. Cancellation rules are not the same as conventional PMI. Do not assume an FHA annual premium drops at 20% equity the way conventional PMI often can. Check current FHA rules for your case number and endorsement date.

Strategies people use around PMI

1. Save toward 20% down if timing allows and reserves stay healthy.
2. Accept PMI, then accelerate principal to reach cancellation thresholds sooner.
3. Make a larger down payment on a less expensive home rather than a tiny down payment on a stretch property.
4. Compare lender-paid versus borrower-paid structures with a holding-period assumption.
5. Refinance later if rates and equity make a no-PMI loan attractive after fees.

None of these is universally best. Emptying an emergency fund to dodge $120 a month of PMI can be a fragile move. Paying PMI for a few years while keeping cash reserves can be the more durable path.

Affordability example with and without PMI

Home price $400,000.

• 5% down: loan $380,000, plus PMI.
• 20% down: loan $320,000, typically no conventional PMI.

The 20% path needs $80,000 down versus $20,000. That $60,000 difference is cash that could otherwise sit in reserves or other goals. Meanwhile the 5% path may add perhaps $100–$200 a month in PMI depending on pricing—plus a larger loan payment. The right choice depends on how long you need to save the extra $60,000, what rents cost while you wait, and whether the PMI-inclusive payment still fits.

What to ask your lender or servicer

• Is this conventional PMI or government mortgage insurance?
• How is the premium calculated and collected?
• When can I request cancellation, and what documentation is required?
• When would automatic termination occur if I make only scheduled payments?
• If I pay extra principal, how do I ensure it counts toward the balance used for cancellation?

Get answers in writing when possible. Servicer websites often publish cancellation instructions; follow them exactly.

The practical takeaway

PMI is the price of borrowing more than 80% of the home’s value on many conventional loans. It protects the lender, not your personal budget. Include it in the full housing payment, understand how your loan allows removal, and weigh a larger down payment against the value of keeping cash on hand. Used deliberately, PMI can be a bridge into ownership. Used blindly, it is an easy way to underestimate the true monthly cost of the house you are about to buy.