PMI Calculator (Private Mortgage Insurance)
Estimate the monthly cost of Private Mortgage Insurance (PMI) on conventional loans with down payments under 20%, and find out when you reach the 80% LTV cancellation threshold.
Enter Parameters
Adjust inputs to calculate real-time estimates
What this pmi calculator is showing you
This PMI Calculator is designed to provide clear, reliable financial mathematics to assist in personal money management and scenario planning.
The tool focuses on transparent formulas, actionable outputs, and practical planning insights to support informed financial decision-making.
Mathematical Model
Monthly PMI = (Loan Amount × Annual PMI Rate %) / 12. PMI drops off when remaining balance reaches 80% (requestable) or 78% (automatic) of original purchase price.
Inputs that matter most
Understanding how each variable impacts the final calculation
Home purchase price
The primary value establishes the baseline magnitude for the entire calculation model.
Down payment amount
The rate or percentage factor determines how the baseline value expands, discounts, or incurs expense over the modeled period.
Mortgage interest rate (%)
The timeframe or secondary parameter provides essential context, defining the duration or conditions under which the math operates.
How to interpret your results
Use the calculation output as an objective decision-making checkpoint. Test multiple input scenarios to observe which variables exert the strongest influence on the final result.
Complement numerical outputs with comprehensive financial planning principles before executing binding commitments.
- ✓ Test both conservative and optimistic scenarios to understand the full sensitivity range of your financial plan.
- ✓ Verify critical calculations against official institutional documentation and qualified professional counsel.
Worked Example Scenario
The snapshot below illustrates a representative calculation using the standard initial parameters:
Monthly PMI cost
$213.75
Months to 80% LTV
95 months (7.9 yrs)
Total lifetime PMI paid
$20,306.25
Under federal law, you can request PMI cancellation when your principal balance reaches 80% of original purchase price.
General Financial Calculation Considerations
This calculator provides educational estimates designed for preliminary planning and scenario analysis. Financial outcomes in practice are influenced by individual contractual terms, institutional fees, tax obligations, and market changes.
Verify all critical financial calculations with licensed advisers, institutional documentation, and qualified legal or tax professionals before executing binding agreements.
Key Factors to Review:
- • Calculations are mathematical models based on user-supplied variables.
- • Real-world results may vary due to fees, taxes, and contractual specifics.
Frequently Asked Questions
How do I cancel PMI on my mortgage? ▼
Under the Homeowners Protection Act, you can request PMI cancellation when your loan balance reaches 80% of original value, and lenders must cancel automatically at 78% LTV.
What factors determine my PMI rate? ▼
PMI rates typically range from 0.3% to 1.5% annually based on your credit score, loan-to-value ratio (LTV), and loan type.