Use this private mortgage insurance calculator to estimate your monthly PMI, your total monthly housing cost, and when you may be able to cancel PMI.
If you're shopping for a home with less than a 20% down payment, this private mortgage insurance calculator can help you set realistic expectations before you make an offer. PMI is one of the most misunderstood costs in home buying, and it can have a noticeable impact on your monthly payment.
What is private mortgage insurance (PMI)?
Private mortgage insurance is a fee charged on many conventional loans when your loan-to-value ratio (LTV) is above 80%. In plain language, if you borrow more than 80% of the home's purchase price, lenders usually require PMI to reduce their risk.
- PMI protects the lender, not the borrower.
- It's usually paid monthly as part of your mortgage payment.
- PMI cost depends on loan size, down payment, credit profile, and loan program.
How this private mortgage insurance calculator works
This calculator estimates your PMI and combines it with principal, interest, taxes, and insurance so you can see a more complete payment picture.
Inputs used in the calculation
- Home price and down payment to determine loan amount and LTV.
- Interest rate and loan term to estimate principal and interest.
- PMI rate to estimate monthly PMI.
- Property tax and homeowners insurance to estimate total monthly housing cost.
Core formula
A common approximation for monthly PMI is:
Monthly PMI = Loan Amount × PMI Rate ÷ 12
Example: On a $360,000 loan with a 0.55% annual PMI rate, estimated monthly PMI is about $165.
When can PMI be removed?
For many conventional loans, you can request PMI cancellation when your loan reaches 80% LTV (based on the original value, assuming no special lender overlays). Lenders generally must automatically terminate PMI by 78% LTV if you're current on payments. This calculator estimates both milestones using your amortization schedule.
How to lower PMI costs
- Increase your down payment: Even moving from 5% to 10% down can lower PMI substantially.
- Improve your credit profile: Better credit can reduce PMI pricing.
- Choose a shorter term: Depending on lender pricing, this may lower risk-based charges.
- Recast or refinance later: If your home value rises or balance falls, you may remove PMI sooner.
- Track your LTV: Request cancellation as soon as you're eligible.
PMI vs. FHA mortgage insurance premium (MIP)
PMI and MIP are similar in that both are mortgage insurance, but they are not the same:
- PMI is typically tied to conventional loans and can be canceled when equity increases.
- MIP applies to FHA loans and may last much longer depending on down payment and loan term.
Quick FAQ
Is PMI always bad?
Not necessarily. PMI can help you buy sooner instead of waiting years to save 20% down. The key is understanding the cost and your likely timeline for removal.
Can home appreciation remove PMI faster?
Sometimes, yes. Lenders may allow cancellation based on a new appraisal and seasoning requirements. Check your loan documents for exact rules.
Should I pay points or increase down payment to avoid PMI?
It depends on your cash reserves, expected time in the home, and rate options. Compare total cost scenarios before deciding.
Bottom line
A private mortgage insurance calculator gives you clarity before you commit. Use it to estimate your monthly PMI, budget your full payment, and plan your path to removing PMI as soon as possible.