Private mortgage insurance is one of the most misunderstood costs in homebuying. It's often portrayed as "throwing money away" — but it's also the mechanism that makes low-down-payment homeownership possible at all. Understanding how it works, what it costs, and when you can get rid of it helps you make the right decision for your situation.
What PMI Is — and What It Isn't
Private mortgage insurance protects the lender, not you. If you default on your loan and the foreclosure sale doesn't cover the remaining balance, PMI pays the lender the difference. You're paying for insurance that benefits someone else.
That's the frustrating part. The practical justification: by reducing lender risk, PMI allows lenders to offer loans to buyers who haven't saved a full 20% down payment — buyers who might otherwise have to rent for years while saving. For many buyers, PMI is the cost of entering the market earlier.
PMI is required on conventional loans when your down payment is less than 20% (loan-to-value ratio greater than 80%). It is not the same as FHA mortgage insurance, which is a separate product with different rules.
PMI vs. FHA Mortgage Insurance Premium (MIP)
These two products are often conflated but have important differences:
| Feature | Conventional PMI | FHA MIP |
|---|---|---|
| Who provides it | Private insurance companies | FHA (government) |
| Required when | Less than 20% down | All FHA loans |
| Upfront cost | Usually none (with monthly PMI) | 1.75% of loan upfront |
| Annual cost | 0.5–1.5% per year | 0.55% per year (most loans) |
| Can be canceled? | Yes — at 20–22% equity | Not on loans made after June 2013 with less than 10% down — permanent |
| Score sensitivity | Higher score = lower PMI cost | Rate doesn't vary with score |
The permanence of FHA MIP is the biggest disadvantage of FHA loans for buyers who have decent credit. A borrower with a 680 credit score putting 5% down on a conventional loan will likely pay less total PMI — and be able to cancel it — compared to an FHA borrower who can never eliminate MIP without refinancing.
For borrowers with credit scores below 620, FHA is often still the better deal even with permanent MIP because the rate pricing on conventional loans at low credit scores is punishing.
What PMI Costs: The Variables
PMI is not one flat rate — it's priced based on several risk factors:
Credit score: The single biggest driver. Borrowers with higher scores are statistically less likely to default, so they get lower PMI rates.
Loan-to-value (LTV) ratio: A 5% down payment (95% LTV) carries more risk than a 15% down payment (85% LTV). Lower LTV = lower PMI rate.
Loan type: Fixed-rate mortgages typically carry lower PMI than adjustable-rate mortgages.
Occupancy: Primary residence vs. investment property. Investment properties carry higher PMI if PMI is available at all.
Illustrative PMI rates (approximate annual cost as % of loan):
| Credit Score | 5% Down (95% LTV) | 10% Down (90% LTV) | 15% Down (85% LTV) |
|---|---|---|---|
| 760+ | ~0.40% | ~0.30% | ~0.20% |
| 720–759 | ~0.65% | ~0.45% | ~0.30% |
| 680–719 | ~0.85% | ~0.60% | ~0.40% |
| 640–679 | ~1.10% | ~0.85% | ~0.65% |
| 620–639 | ~1.30% | ~1.00% | ~0.80% |
On a $300,000 loan with a 720 credit score at 5% down, PMI runs approximately 0.65% per year = $1,950/year = $162.50/month.
On the same loan with a 640 credit score, PMI runs approximately 1.10% = $3,300/year = $275/month.
Both can be eliminated — but the credit score difference means $112.50 per month extra, every month, until you hit 20% equity.
How PMI Is Paid
There are three ways PMI can be structured:
Monthly PMI: Added to your monthly mortgage payment. Most common structure. You see it as a separate line item on your mortgage statement. Cancellable when you reach 20% equity.
Single-premium PMI: You pay the entire PMI cost as a one-time upfront payment at closing. On a $300,000 loan, a single-premium might run $1,800–$5,000. No monthly PMI cost after that. This makes sense if you have the cash and plan to stay long enough to recoup the upfront cost vs. monthly — but if you sell or refinance soon, you've overpaid.
Split-premium PMI: A hybrid — lower upfront payment at closing, lower monthly premium. Less common but available through some lenders.
The Homeowners Protection Act: Your Rights
The Homeowners Protection Act of 1998 (HPA) gives you specific rights regarding PMI cancellation on conventional loans:
Borrower-requested cancellation at 20% equity (80% LTV):
- You can formally request PMI cancellation when your loan balance falls to 80% of the original appraised value
- The request must be in writing
- You must be current on payments with no history of 30-day late payments in the past year
- The lender may require a new appraisal at your expense (typically $400–$700) to confirm current value hasn't declined
Automatic cancellation at 22% equity (78% LTV):
- By law, PMI must be automatically canceled when your scheduled loan balance reaches 78% of the original appraised value (not current market value)
- This is based on amortization schedule — the lender calculates this for you
- You must be current on payments; if you're behind, cancellation is delayed until you're current
Midpoint cancellation:
- Regardless of LTV, PMI must be canceled at the midpoint of your loan term (year 15 of a 30-year loan) if you're current on payments
These protections apply to loans on primary and secondary residences. Investment properties are excluded.
Requesting Early Cancellation: How It Works
Getting to 20% equity through regular amortization alone takes years on a typical mortgage. But appreciation can get you there faster — especially if home values in your area have risen significantly since you purchased.
To request early cancellation based on appreciation:
- Request PMI cancellation in writing from your servicer
- Confirm you've been on time with payments (typically no 30-day lates in the past 12 months, no 60-day lates in the past 24 months)
- Pay for a new appraisal ($400–$700) — the lender orders it and you pay for it; you cannot use your own appraiser
- If the current appraised value confirms you're at or below 80% LTV, PMI is canceled
Some lenders have additional seasoning requirements — they may require you to have the loan for at least 2 years before allowing cancellation based on appreciation. Ask your servicer about their specific policy.
Example: You bought a $350,000 home with 10% down ($315,000 loan). Two years later, the home is worth $410,000. Your loan balance is approximately $305,000. Your LTV is $305,000 ÷ $410,000 = 74.4%. You're well below 80%. A new appraisal for $400–$600 could eliminate your $175/month PMI immediately.
Refinancing to Eliminate PMI
If you have significant equity but your lender won't cancel PMI based on appreciation (or if you're on an FHA loan with permanent MIP), refinancing into a new conventional loan is the other path.
Refinancing makes sense when:
- Mortgage rates are similar to or lower than your current rate
- The refinanced loan's LTV is below 80% (no new PMI)
- The cost of the refinance (closing costs of 2–4% of loan) is recovered through savings within a reasonable timeframe
The break-even calculation: total refinance costs ÷ monthly savings = months to break even. If you'll stay in the home longer than the break-even period, refinancing likely makes sense.
FHA borrowers with good credit and 20%+ equity often benefit substantially from refinancing to conventional — eliminating MIP can save $200–$400/month.
The Piggyback Loan (80-10-10) Strategy
The 80-10-10 structure avoids PMI entirely by splitting your financing:
- 80% first mortgage (conventional)
- 10% second mortgage (home equity loan or HELOC)
- 10% your down payment
Since the first mortgage is at 80% LTV, no PMI is required. The second mortgage carries a higher interest rate than the first (often 1–2% higher), but you avoid PMI entirely.
When 80-10-10 makes sense:
- You have 10% for a down payment but not 20%
- Your current credit and income qualify for both loans simultaneously
- The combined payment of both loans is less than first mortgage + PMI
- You want to avoid PMI without waiting to save a full 20%
The math doesn't always favor the piggyback. Compare the full monthly cost (first mortgage + second mortgage) against (first mortgage + PMI) over your expected time in the home. The piggyback second mortgage will eventually be paid off or eliminated; PMI disappears at 20% equity.
Lender-Paid PMI (LPMI): The Trade-Off
With lender-paid PMI, the lender pays the PMI cost upfront by incorporating it into a higher interest rate. Your monthly payment shows no PMI line item — but you're paying it through a higher rate.
The critical disadvantage: LPMI cannot be canceled. Since it's baked into the interest rate, the only way to eliminate it is to refinance into a new loan. If rates rise after you close, you're stuck.
LPMI makes sense primarily for buyers who:
- Are very certain they'll sell or refinance within 5–7 years (before the rate differential adds up)
- Have specific tax situations where a higher deductible interest payment is advantageous
- Simply prefer a simpler monthly statement without PMI as a line item
For most buyers with a 20+ year horizon, monthly PMI that can be canceled is the better long-term choice.