PMI Calculator
Print| Annual PMI Cost | $0.00 |
| PMI Cancellation Loan Balance (80% LTV) | $0.00 |
When purchasing a home with a conventional mortgage and a down payment of less than 20%, lenders require buyers to pay Private Mortgage Insurance (PMI). PMI protects the lender against default, but adds a monthly surcharge to your housing bill. Annual PMI rates typically range between 0.3% and 1.5% of your original loan amount, depending on your credit score and Loan-to-Value (LTV) ratio. Our free PMI Calculator calculates your exact monthly PMI fee, total annual premium cost, and projects the exact month your loan balance reaches the 80% LTV threshold required for automatic PMI cancellation.
Whether you are putting down 3%, 5%, or 10% cash, read on for PMI calculation formulas, credit score tier tables, and step-by-step calculation guides.
How Private Mortgage Insurance (PMI) Is Calculated
PMI payments are calculated based on your loan amount, down payment percentage, and credit score:
1. Monthly PMI Fee Formula:
Annual PMI Premium = Mortgage Loan Principal × Annual PMI Rate Percentage
Monthly PMI Fee = Annual PMI Premium / 12
2. Loan-to-Value (LTV) Ratio Formula:
LTV Ratio (%) = (Mortgage Loan Principal / Appraised Property Value) × 100
3. 80% LTV Cancellation Threshold Formula:
Under the federal Homeowners Protection Act, PMI can be cancelled once your principal balance drops to 80% of the original home value:
Target 80% Loan Balance = Original Purchase Price × 0.80
Principal Reduction Needed = Current Loan Balance - Target 80% Balance
Estimated Monthly PMI Rates by Credit Score Table
The table below presents estimated monthly PMI fees and annual costs for a $350,000 home purchase with a 5% down payment ($332,500 loan amount / 95% LTV) across various borrower credit score tiers:
| Credit Score Tier | Est. Annual PMI Rate (%) | Annual PMI Cost | Monthly PMI Fee | Est. Years to Reach 80% LTV |
|---|---|---|---|---|
| 760+ (Excellent Credit) | 0.38% | $1,263.50 / yr | $105.29 / mo | ~7.5 Years |
| 720 – 759 (Very Good) | 0.55% | $1,828.75 / yr | $152.40 / mo | ~7.5 Years |
| 680 – 719 (Good) | 0.85% | $2,826.25 / yr | $235.52 / mo | ~7.5 Years |
| 640 – 679 (Fair) | 1.25% | $4,156.25 / yr | $346.35 / mo | ~7.5 Years |
Step-by-Step Calculation Example
A buyer purchases a home for $400,000 with a 10% down payment ($40,000), financing a $360,000 loan balance (90% LTV). The borrower has a 740 credit score, securing an annual PMI rate of 0.50%.
Step 1: Calculate annual PMI premium
Annual PMI Premium = $360,000 × 0.0050 = $1,800.00 / year
Step 2: Calculate monthly PMI fee
Monthly PMI Fee = $1,800 / 12 = $150.00 / month
Step 3: Calculate 80% LTV target balance for PMI cancellation
Target 80% Balance = $400,000 × 0.80 = $320,000.00
Principal Payoff Needed to Cancel PMI = $360,000 - $320,000 = $40,000.00
Result Summary:
The buyer pays $150.00 per month in PMI until paying down $40,000 in mortgage principal to reach 80% LTV.
Frequently Asked Questions (FAQ)
When can I cancel Private Mortgage Insurance (PMI)?
Under the federal Homeowners Protection Act, you can request PMI cancellation when your loan balance reaches 80% LTV of the original purchase price based on scheduled amortization. Lenders are legally required to automatically cancel PMI when the loan reaches 78% LTV.
How does home appreciation help eliminate PMI early?
If your home’s market value increases significantly due to local real estate appreciation or major home improvements, you can request a new appraisal. If the new appraisal proves your current loan balance is 80% LTV or less, your lender can remove PMI immediately.
What is the difference between PMI and FHA MIP?
PMI applies to conventional loans and can be cancelled once you reach 80% LTV. FHA Mortgage Insurance Premiums (MIP) apply to FHA loans and typically remain for the entire 30-year life of the loan regardless of LTV if down payment was under 10%.
How can I avoid paying PMI entirely?
You can avoid PMI by making a 20% or larger cash down payment at closing, using piggyback loans (such as an 80-10-10 structure), securing lender-paid mortgage insurance (LPMI), or utilizing VA loans (which require no PMI for eligible veterans).