Mortgage Calculator with PMI
Estimate your monthly mortgage payment including principal, interest, property tax, homeowners insurance, HOA dues, and private mortgage insurance (PMI).
What This PMI Calculator Helps You See
A mortgage payment can look simple at first glance, but the real monthly cost usually includes more than principal and interest. This calculator helps you estimate the full monthly payment by adding common housing costs:
- Principal and interest (P&I)
- PMI (private mortgage insurance), if applicable
- Property taxes
- Homeowners insurance
- HOA dues
It also estimates when you may reach 80% and 78% loan-to-value (LTV), which are important thresholds for PMI removal discussions with your lender.
How PMI Works
When PMI is typically required
PMI is generally required on conventional loans when your down payment is less than 20% of the home purchase price. PMI protects the lender, not the borrower, and is usually charged monthly as part of your mortgage payment.
How PMI is estimated
In this calculator, PMI is estimated with a simple annual percentage rate applied to your loan amount:
Monthly PMI = (Loan Amount × PMI Rate) ÷ 12
Real-world PMI pricing may vary by credit score, loan type, occupancy, and lender guidelines, so treat this as a planning estimate.
How to Use the Calculator
1) Set your purchase and down payment
Choose whether your down payment is entered as a percentage or dollar amount. The calculator converts this into a down payment percent and computes your starting LTV.
2) Enter financing terms
Input your annual interest rate and loan term. These values determine your principal-and-interest payment.
3) Add ownership costs
Include annual property taxes, annual homeowners insurance, and monthly HOA dues to get a fuller monthly estimate.
4) Review monthly and PMI details
The result section provides a payment breakdown and estimated PMI timeline. This helps you compare scenarios before making an offer.
Ways to Reduce Your Monthly Payment
- Increase down payment: A larger down payment lowers loan amount and may remove PMI entirely.
- Shop rates: Even a small interest-rate reduction can meaningfully lower monthly principal and interest.
- Challenge tax assumptions: Verify local property tax estimates with the county assessor.
- Plan for PMI exit: As equity rises, request PMI removal when you meet lender requirements.
- Compare loan options: Different structures (term length, points, lender fees) change long-term cost.
Common Mistakes to Avoid
- Only budgeting for principal and interest while ignoring taxes and insurance.
- Underestimating PMI impact with a low down payment.
- Using unrealistic property tax or insurance assumptions.
- Not stress-testing your budget for maintenance and utilities.
Quick FAQ
Does PMI last forever?
No. For many conventional loans, PMI can be removed once you reach required equity thresholds and satisfy lender rules.
Is this calculator exact?
It is designed for planning and comparison. Final numbers on a loan estimate or closing disclosure may differ.
Can I use this for refinancing?
Yes. Enter your current home value, planned loan amount, and updated rates to model potential refinance payments and PMI impact.