Private mortgage insurance is one of the most misunderstood costs in homeownership. If you put less than 20% down on a conventional loan, your lender requires PMI to protect themselves against default risk. It does nothing for you as a borrower — but understanding how it works can save you thousands of dollars.
Private mortgage insurance is an insurance policy that protects the lender — not you — if you default on your mortgage. When you put less than 20% down, the lender considers the loan higher risk because you have less skin in the game. PMI reduces the lender's exposure to loss, which is why they are willing to offer low-down-payment loans in the first place.
Without PMI, lenders would require 20% down on every loan, locking millions of buyers out of homeownership. PMI is the tradeoff that makes 3-15% down payments possible on conventional loans. Think of it as the cost of borrowing with less equity — it is not ideal, but it opens doors that would otherwise be closed.
PMI typically costs 0.3-1.5% of the original loan amount per year, paid monthly. The exact rate depends on your credit score, down payment percentage, loan amount, and loan type. A borrower with a 760 credit score and 10% down might pay 0.3%, while a borrower with a 640 credit score and 3% down could pay 1.2% or more.
On a $300,000 loan at 0.5% PMI, that is $1,500 per year or $125 per month. At 1.0%, it is $3,000 per year or $250 per month. Over the years you carry PMI, this adds up to $5,000-$15,000 or more. The cost is real but should be weighed against the alternative: waiting years to save a larger down payment while home prices rise and rent payments continue.
Your credit score has the biggest impact on PMI cost. Borrowers with 760+ scores pay roughly half the PMI rate of borrowers with 680 scores. Down payment size matters too — 10% down costs significantly less PMI than 5% or 3% down. Loan-to-value ratio, loan term, and whether the rate is fixed or adjustable also factor in.
The most common type. You pay a monthly premium added to your mortgage payment. This is the simplest to understand and the easiest to cancel once you reach 20% equity. Most lenders default to this option.
The lender pays the PMI premium in exchange for charging you a higher interest rate — typically 0.25-0.50% higher. The advantage is no separate PMI payment, which can help with DTI qualification. The disadvantage is you cannot cancel it — the higher rate stays for the life of the loan (unless you refinance). LPMI makes sense if you plan to sell or refinance within 5-7 years.
You pay the entire PMI cost upfront at closing as a single lump sum, typically 1-3% of the loan amount. This eliminates the monthly payment entirely. If you have the cash and plan to stay in the home long-term, single-premium PMI can save money versus monthly payments. However, the upfront premium is generally not refundable if you sell or refinance early.
A hybrid approach where you pay a portion upfront and the rest monthly. This reduces the monthly payment compared to full monthly PMI while requiring less cash upfront than single-premium. It is less common but can be a useful compromise.
Under the Homeowners Protection Act (HPA), your servicer must automatically cancel monthly PMI when your loan balance reaches 78% of the original purchase price — meaning you have 22% equity based on the original value. You do not need to do anything; it happens automatically.
However, you can request cancellation earlier. Once your loan balance reaches 80% of the original value, you have the right to request PMI removal. Your servicer may require a new appraisal to confirm the home's value and verify that you have no subordinate liens. If your home has appreciated, you may reach 80% LTV faster than the original amortization schedule projected.
Making extra principal payments accelerates your path to 80% LTV. Even an extra $100-$200/month can shave years off your PMI payments. Home improvements that increase your property's appraised value also help — a kitchen renovation or bathroom update can push your equity past 20% faster than waiting for the market or amortization schedule.
Refinancing is another option if your home has appreciated significantly. If your home is now worth enough that your current loan balance represents 80% or less of the new appraised value, you can refinance into a new loan without PMI. Factor in the refinancing costs ($3,000-$6,000) to make sure it is worth it.
PMI on conventional loans is fundamentally different from mortgage insurance premium (MIP) on FHA loans. PMI cancels at 78-80% LTV; FHA MIP stays for the life of the loan (for borrowers who put less than 10% down). PMI rates vary by credit score; FHA MIP is a flat 0.85% for most borrowers. PMI is provided by private insurers; FHA MIP goes to the government.
For borrowers who qualify for both conventional and FHA loans, the cancellable nature of PMI is a significant advantage. Even if the initial PMI rate is slightly higher than FHA MIP, the ability to eliminate it after a few years often makes conventional the better long-term choice. Run the numbers for your specific situation to compare total cost over your expected hold period.
The math depends on how long it takes you to save the additional amount, how fast home prices are rising, and what you are paying in rent while saving. If homes in your market appreciate 4% per year and you need 3 more years to save an extra $30,000 for the 20% threshold, you might pay $36,000 in rent during that time while home prices rise $40,000 or more.
In most scenarios, paying PMI for a few years while building equity is financially superior to waiting years to save a larger down payment. The exception is if you can save aggressively in a very stable housing market — but those conditions are rare. For most buyers, the question is not whether to pay PMI but how to minimize it and eliminate it as quickly as possible.