Enter price, down payment, annual rate and term to estimate monthly principal and interest.
U.S. fixed-rate mortgage estimates
Mortgage Calculator
For U.S. conventional fixed-rate mortgages with standard amortization: estimate principal, interest and optional housing costs. It does not model FHA, VA, ARM or other loan types.
Your estimate
Know your payment. Know the assumptions.
Enter a price, down payment and rate to see principal, interest, housing costs and a transparent PMI timeline.
Start with the core payment, then complete the housing-cost picture.
Add actual tax, insurance, PMI, HOA and extra principal. Costs you do not add are not silently assumed to be zero.
Compare principal and interest, included costs and PMI timing; use it to compare scenarios, not replace a lender quote.
See what is calculated, what is missing and where the estimate applies.
U.S. conventional fixed-rate loans with standard monthly amortization; not FHA, VA, USDA, ARM, interest-only, balloon or recast loans.
Standard monthly amortization is used. Estimated 78% automatic termination and 80% potential request points are shown separately.
Uses owner-occupied average effective tax rates. It is a state benchmark; county bills, assessments and exemptions vary.
Property-tax source: Tax Foundation Facts & Figures 2026, Table 33 (calendar year 2024; owner-occupied average effective rates). Rates, taxes, insurance, PMI and HOA are not fetched externally; they come from your browser inputs or selections.
Methodology last reviewed: September 2026
This calculator is for educational and estimation purposes only. It does not provide a loan offer, approval, tax advice, legal advice or financial advice. Actual mortgage payments, taxes, insurance, PMI and lender terms may differ.
Mortgage calculator questions
Which country and loan type is this mortgage calculator for?
It is designed for U.S. conventional fixed-rate mortgages with a standard monthly amortization schedule. Its standard PMI and amortization assumptions do not cover FHA, VA, USDA, adjustable-rate, interest-only, balloon, lender-paid PMI or recast loans.
What does the monthly principal and interest estimate include?
It calculates only scheduled loan principal and interest from your home price, down payment, interest rate and term. Property tax, homeowners insurance, PMI and HOA are shown separately and are included only when you add or choose them.
Where does the property tax benchmark come from?
The optional state benchmark uses average effective property-tax rates for owner-occupied homes from Tax Foundation Facts & Figures 2026, Table 33, for calendar year 2024. It is a state-level estimate, not a county tax bill.
Why can my lender's payment be different?
Loan terms, taxes, insurance, PMI, escrow, assessments, credits and lender fees vary. This tool is for education and estimation, not a loan offer, approval or financial advice.
Do extra payments lower the scheduled monthly payment?
Extra principal payments can reduce the balance, total interest and projected payoff time. They do not change the scheduled payment or recast the loan in this estimate.