Your Loan Estimate says $1,847 a month. The first statement says $2,012. That $165 gap is usually private mortgage insurance, the fee a lender tacks on when your down payment lands under 20% of the purchase price. It isn’t a scam and it isn’t permanent, but it is the most misunderstood line on a conventional loan estimate.
What PMI on a Conventional Loan Actually Does
PMI protects the lender, not you. If you default and the house sells for less than you owe, the insurer absorbs part of the shortfall. A conventional mortgage isn’t backed by a federal agency the way an FHA loan is, so lenders price that extra risk into your monthly payment until your balance drops far enough that they stop worrying about it.
Two details trip people up. First, PMI is quoted as an annual percentage of your original loan amount and then split into monthly installments. It does not shrink as you pay the balance down. On a $300,000 loan at 0.55%, you pay $1,650 a year, or about $137 a month, whether your balance is $300,000 or $255,000. Second, it isn’t a closing cost you can simply roll in. Single-premium and lender-paid versions exist, but they behave very differently from the standard monthly variety.
How Lenders Price Your PMI
Three variables do most of the work: credit score, loan-to-value ratio, and term length.
Credit score
The spread is brutal. A borrower with a 760 score putting 10% down might get a rate of 0.35%. A borrower with a 640 score on the same loan could be quoted 1.10%, more than three times as much for identical coverage. On a $300,000 loan that’s roughly $190 a month in difference. If your score sits in the low 600s, three months of paying down a card balance or disputing a reporting error often beats shopping six lenders. Start by understanding what credit score you really need for a conventional loan before you assume you’re stuck.
Loan-to-value ratio
Pricing brackets tighten as you approach 20% equity. The jump from 5% down to 10% down saves far more than the jump from 10% to 15%. Some lenders publish their PMI rate cards; ask for one in writing.
Loan term and property type
A 30-year fixed loan carries higher PMI than a 15-year loan at the same LTV, because the lender’s risk window is longer. Condos and second homes can also price higher than a single-family primary residence.
What It Costs in Practice
- 5% down, 740 score, $350,000 purchase: loan of $332,500, PMI near 0.72%, roughly $200 a month
- 10% down, 760 score, same purchase: loan of $315,000, PMI near 0.40%, roughly $105 a month
- 15% down, 780 score, same purchase: PMI near 0.26%, roughly $65 a month
Over five years, the middle example costs you about $6,300 in premiums. That’s real money, but it’s also the price of buying with $31,500 instead of $70,000. Run both scenarios before deciding the insurance is a rip-off. The real numbers on a conventional loan with 5% down look different at every price point, and the monthly figure is only part of the story.
The Rules for Getting Rid of PMI
Federal law sets the floor, and it’s more generous than most borrowers realize. The Homeowners Protection Act of 1998 gives you three separate exit doors.
Requesting cancellation at 80%
Once your balance reaches 80% of the home’s original value, you can write to your servicer and ask for cancellation. The standard conditions: a clean payment history (no 30-day late in the past 12 months, no 60-day late in the past 24), no junior liens such as a HELOC, and whatever certification the lender requires. Put the request in writing. A phone call isn’t enough, and servicers are not obligated to act on one.
Automatic termination at 78%
If you do nothing at all, PMI must terminate automatically on the date your balance is scheduled to hit 78% of original value under your original amortization schedule. Not 78% of today’s market value. On a 30-year loan with 10% down, that lands around year seven or eight. With 5% down, closer to year nine.
Final termination at the midpoint
There’s a backstop: PMI must end at the midpoint of the amortization period regardless of balance. On a 30-year loan, that’s month 180. It rarely comes to this, but it matters if you’ve had a late payment that reset your eligibility clock.
When Paying for an Appraisal Beats Waiting
If values in your neighborhood climbed, a new appraisal can get you out years early. The catch is that most servicers require two years of seasoning before they’ll consider current value, and they typically want 75% loan-to-value on the new number rather than 80% of the original price. A $550 appraisal that removes $150 a month pays for itself in under four months. Confirm in writing that your servicer accepts current-value removal and what threshold applies before you order anything. Automated valuation estimates from Zillow don’t count.
Four Ways to Avoid PMI Altogether
- Put 20% down. Obvious, and out of reach for a lot of first-time buyers.
- Use a piggyback structure. An 80-10-10 setup pairs a first mortgage at 80% LTV with a 10% second mortgage, so the first loan never carries PMI. The second loan’s rate is higher, so do the math over your likely holding period.
- Take lender-paid PMI. You get a higher interest rate instead of a monthly premium. LPMI usually wins if you’ll keep the loan a long time. Borrower-paid wins if you plan to refinance in three or four years, because that rate bump never goes away.
- Pay a single premium upfront. One lump sum at closing, sometimes refundable on a sliding scale if you sell early.
Ads promising “no PMI” loans are almost always selling lender-paid PMI. The cost is still there, just buried in the rate. Before committing to any of these, it helps to know how little you can actually put down on a conventional loan, because the 20% figure is a pricing threshold, not a legal requirement.
PMI Versus FHA Mortgage Insurance
FHA loans charge mortgage insurance no matter how much you put down, and if your down payment is under 10%, the annual premium stays for the life of the loan. Conventional PMI is temporary by statute. That structural difference usually matters more than the headline interest rate, especially if you’re planning to stay put for a decade. Comparing where the money actually goes on an FHA loan versus a conventional loan tends to show the conventional side winning once you’re past the 80% mark.
The Tax Question, Briefly
Mortgage insurance premiums have been deductible as an itemized expense, but the provision has been extended piecemeal and phases out for joint filers above $100,000 of modified adjusted gross income. If you take the standard deduction, it’s worth nothing to you. Confirm the current status with a tax professional rather than assuming it applies.
Where Borrowers Get Burned
- Assuming a refinance automatically removes PMI. It doesn’t if the new loan still sits above 80% LTV.
- Trusting the servicer’s records. Track your own scheduled 80% and 78% dates and request cancellation in writing the month you qualify.
- Ordering an appraisal before confirming the servicer’s current-value policy, then discovering the threshold is 75% and you’re at 79%.
- Choosing a lender-paid structure for the lower payment without comparing total interest over the years you’ll actually hold the loan.
Pull your amortization schedule out of your closing packet and circle two dates: the month you hit 80% of the original purchase price and the month you hit 78%. Set a calendar reminder for both. Then, about 90 days before the first one, call your servicer and ask exactly what they need to process a cancellation request. That single phone call, made early, has saved borrowers more money than most refinance pitches ever will.