You're putting down less than 20%—and now you're wondering how much private mortgage insurance will actually cost you over the life of your loan.
Most lenders require PMI when your down payment is under 20%. It's meant to protect *them* if you default, but it comes out of *your* pocket every single month. The frustrating part? Many homebuyers have no idea how much they're paying, when it goes away, or how to get rid of it faster.
What This Calculator Does
This calculator tells you exactly how much private mortgage insurance you'll pay each month, your total PMI over time, and-most importantly-when you can request to have it removed. You enter your loan amount, down payment percentage, and the estimated PMI rate for your loan type, and the calculator works out your monthly payment instantly. It also shows you the automatic cancellation point under federal law and helps you understand the difference between requesting removal and automatic removal.
How to Use This Calculator
Step 1: Start with your loan amount. This is the total mortgage you're borrowing-not your home's purchase price. If you're buying a $300,000 home and putting down $40,000, your loan is $260,000.
Step 2: Enter your down payment percentage. This is how much you're paying upfront as a percentage of the purchase price. So if you put down $40,000 on a $300,000 home, that's 13.3%.
Step 3: Input your PMI rate. Lenders typically charge between 0.5% and 1.5% annually, depending on your credit score, loan-to-value ratio, and loan type (FHA loans have mortgage insurance built in; conventional loans use PMI). Your lender can give you this rate, or check your loan estimate.
Step 4: Select your loan term (15, 20, or 30 years). PMI stays on longer with longer terms, all else equal.
Step 5: Hit calculate. You'll see your monthly PMI payment, your annual PMI cost, your total PMI over the full loan term, and the loan balance at which PMI automatically cancels under federal law (78% of original purchase price).
The Formula Behind the Math
PMI isn't hard to calculate once you know the rate:
Annual PMI = Loan Amount × PMI Rate
Monthly PMI = Annual PMI ÷ 12
Let's work through a real example. You're buying a home for $350,000 with a 12% down payment ($42,000), so your loan is $308,000. Your lender quoted you a PMI rate of 0.85% annually.
Annual PMI = $308,000 × 0.0085 = $2,618
Monthly PMI = $2,618 ÷ 12 = $218.17
Over a 30-year mortgage, that's $78,542 in PMI alone-assuming rates stay constant and your loan balance drops (which it does as you pay down principal). The good news: your monthly PMI payment shrinks as your loan balance decreases, and you hit the 78% cancellation point (federal law) well before the end of your term.
Our calculator does all of this instantly-but now you understand exactly what it's computing.
PMI for First-Time Homebuyers with a Small Down Payment
You've saved $30,000 for a down payment on a $250,000 home. That's only 12%—well below the 20% threshold-so PMI is non-negotiable. Your loan is $220,000. At a 0.95% PMI rate, you're paying $209 per month for insurance that protects the lender, not you. Over a 30-year mortgage, that's $75,240. But here's the silver lining: your PMI payment drops as you build equity. Once your loan balance falls to $200,000 (80% of the original $250,000 purchase price), you can request PMI removal in writing. That usually happens around year 7–8, depending on how fast you pay down the loan. If you accelerate payments or refinance into a lower rate, you could hit that 80% mark even faster.
PMI for Borrowers with Excellent Credit
Not all PMI rates are created equal. If you have a 750+ credit score and are putting down 15%, your lender might quote you 0.55% PMI annually. On a $300,000 purchase with $45,000 down (15%), that's only $141 per month. A borrower with a 650 credit score and the same down payment might pay 1.25%—$312 per month. That's a $171 monthly difference, which adds up to $61,560 over 30 years. Improving your credit score before buying can save you thousands in PMI costs.
PMI on FHA Loans vs. Conventional Loans
FHA loans have a different insurance structure: mortgage insurance premium (MIP) is built in rather than sold separately. You pay an upfront MIP (1.75% of the loan amount, usually financed into your loan) plus an annual MIP (0.55%–0.8% depending on loan-to-value and loan term). So on a $280,000 FHA loan, you're paying $4,900 upfront (financed) plus roughly $154–224 monthly. The catch: FHA MIP is *permanent* on loans with less than 10% down, even after you hit 80% LTV. If you put down 10% or more, MIP cancels at 80% LTV after 11 years. Conventional PMI cancels at 78% LTV automatically. For many buyers, this makes conventional loans with PMI the better deal long-term if you can manage a 10%+ down payment.
PMI and Refinancing
You bought with 12% down and have been paying PMI for three years. Your home has appreciated, and you've paid down principal. Now you owe $190,000 on a home worth $280,000—that's 68% LTV. You could refinance into a new conventional loan without PMI, eliminating that $200+ monthly payment forever. The refinance costs (appraisal, title, origination fees) typically run $3,000–6,000, but if rates have dropped or you're planning to stay in the home another 5+ years, refinancing out of PMI often makes financial sense. Run the numbers: compare your current PMI cost against refinance costs and any rate change.
Tips and Things to Watch Out For
Understand the difference between removal and cancellation. You can *request* PMI removal once you hit 80% LTV (by paying faster or building equity through home appreciation), but you have to ask your lender in writing. They may require an appraisal. Automatic *cancellation* happens at 78% LTV under the Homeowners Protection Act, whether you ask or not. Don't assume it disappears on its own-stay proactive.
Know your loan type. Conventional loans use PMI. FHA loans use mortgage insurance premium (MIP), which works differently and doesn't cancel on loans with less than 10% down. VA and USDA loans have no PMI. Understanding which type you have changes when insurance drops off.
Your PMI rate depends on several factors. Credit score, down payment percentage, loan amount, loan type, and the lender all affect your rate. Shop around with multiple lenders; a 0.3% difference in PMI rate might not sound like much, but it adds up to thousands over 30 years.
PMI doesn't build equity. Unlike your mortgage payment (where some goes to principal and interest), PMI is pure cost-it doesn't reduce what you owe. This is why getting rid of it as quickly as possible matters.
Refinancing can eliminate PMI faster than scheduled. If your home appreciates or you pay down principal aggressively, refinancing into a conventional loan at 80% LTV or below avoids PMI entirely-no waiting years to hit cancellation. Just run the math on refinance fees first.
Note on tax implications: PMI is not tax-deductible (as of 2026), but your mortgage interest is. Keep this in mind when comparing the true cost of your loan. Tax laws can change, so check current IRS guidance for your situation.
Frequently Asked Questions
How much does PMI typically cost per month?
PMI usually runs 0.5% to 1.5% of your loan amount annually, or about $50–$200 per month on a $300,000 loan. Your exact rate depends on your credit score, down payment, and lender. A 15% down payment with good credit might be 0.55%; a 5% down payment with fair credit could be 1.25%.
When does PMI go away automatically?
PMI automatically cancels at 78% loan-to-value (LTV) under the Homeowners Protection Act. So if you borrowed $250,000, PMI drops off automatically once your loan balance falls to $195,000—regardless of whether you ask. You can request removal earlier, typically at 80% LTV, but you have to contact your lender in writing.
Can I avoid PMI by putting down less than 20%?
Not with a conventional loan-PMI is required if you put down less than 20%. However, you could explore FHA loans (which use MIP instead), piggyback loans (getting a second loan to reach 20%), or delaying your purchase to save more. Some lenders offer no-PMI loans with slightly higher interest rates, but you're trading PMI for a higher rate-the total cost usually comes out similar.
How do I get rid of PMI faster?
You can accelerate PMI removal by paying extra toward principal, which drops your loan balance faster. Build home equity through paying down the loan or waiting for appreciation, then reach out to your lender to request removal at 80% LTV. Refinancing is another path if rates have dropped or your home has appreciated significantly.
Does PMI protect me as a homeowner?
No. PMI protects the *lender*, not you. It's an insurance policy that pays the lender if you default and the home sale doesn't cover the remaining loan balance. You pay for it, but you don't benefit from it. This is why getting rid of it as soon as possible makes sense.
Is PMI the same as homeowners insurance?
Not at all. Homeowners insurance protects your home and belongings from damage, theft, and liability. PMI protects the lender from your default. You need homeowners insurance regardless of your down payment; PMI is only required if you put down less than 20% (on conventional loans).
Related Calculators
Use our mortgage calculator to estimate your full monthly payment, including principal, interest, taxes, and insurance alongside PMI. Our down payment calculator helps you figure out how much to save to avoid PMI altogether, or reach 80% LTV faster. The home affordability calculator can help you determine the right purchase price based on your income so you understand the full financial picture before you start shopping.