Mortgage Calculator with Taxes, Home Insurance & PMI (2026)
Calculate your true monthly house payment including principal, interest, property taxes, home insurance, and PMI.
Interactive US Mortgage Calculator
Calculate PITI: Principal, Interest, Taxes, Hazard Insurance & PMI.
Loan Principal Financed: $340,000
Overview & Practical Application
Buying a home is the largest financial transaction most Americans will ever make. However, looking solely at principal and interest (P&I) gives a dangerously misleading estimate of actual monthly housing costs. In the United States, your monthly mortgage escrow payment typically includes property taxes (often 1% to 2.5% of assessed value annually), homeowner's hazard insurance, and Private Mortgage Insurance (PMI) if your down payment is under 20%.
Our client-side Mortgage Calculator accounts for all four pillars of housing costs (PITI: Principal, Interest, Taxes, Insurance). Because this tool computes everything locally in your web browser, you can model different down payment scenarios, interest rate fluctuations, and loan durations without third-party lenders tracking your credit score or bombarding you with spam phone calls.
Official Formula / Technical Standard
Real-World Worked Scenario
On a $400,000 home with 20% down ($80,000 down payment, $320,000 loan) at 6.75% interest over 30 years: Base P&I is $2,075.63/mo. Adding $375/mo property taxes and $125/mo hazard insurance yields a true total monthly payment of $2,575.63.
Expert Best Practices & Common Pitfalls
Recommended Best Practices
- •Aim for a 20% down payment whenever possible to eliminate monthly Private Mortgage Insurance (PMI) fees.
- •Verify the specific property tax rate of the target county; county millage rates vary significantly even between adjacent school districts.
- •Keep your total housing payment (PITI) under 28% of your gross monthly household income (the standard front-end debt-to-income ratio).
Common Mistakes to Avoid
- •Forgetting to factor in Homeowners Association (HOA) fees or annual property tax reassessments.
- •Assuming advertised teaser interest rates apply without checking the required discount points or credit tiers.
- •Underestimating hazard insurance premiums, especially in coastal or flood-prone regions.
Step-by-Step Instructions
Enter Your Data
Input your parameters or select your source data for the Mortgage Calculator.
Customize Settings
Adjust available options, filters, or parameters to meet your requirements.
Review Output
Inspect the calculated results, formatted data, or generated output instantly.
Copy or Download
Copy the results to your clipboard or download the output to your local device.
Features & Security Architecture
- 100% Client-Side: Zero server uploads ensure complete privacy and data confidentiality
- Instant Results: Computations and transformations occur in real-time with zero latency
- No Sign-Up Required: Completely free to use with no daily usage caps or account requirements
- Works on All Devices: Fully responsive across desktop, tablet, and mobile browsers
Frequently Asked Questions
What is the difference between fixed-rate and adjustable-rate mortgages (ARM)?▼
A fixed-rate mortgage locks in your interest rate and monthly principal and interest payment for the entire loan duration (typically 15 or 30 years). An ARM starts with a lower promotional rate for a set period (such as 5 or 7 years) after which the rate adjusts periodically based on benchmark market rates.
How does Private Mortgage Insurance (PMI) work?▼
If you put down less than 20% on a conventional home loan, lenders require PMI to protect against default. PMI usually costs between 0.3% and 1.5% of the original loan amount annually and can generally be cancelled once you reach 20% home equity.
Is my personal data saved when using this calculator?▼
No. All interest formulas and amortization schedules execute strictly within your local browser JavaScript engine. We never transmit, store, or sell your financial figures.