Mortgage Calculator

Calculate monthly mortgage payments with taxes, insurance, and PMI. Compare 15 vs 30-year loans. Free home loan calculator with amortization schedule.

Methodology, sources & limitations

This calculator uses a published formula and the values entered in the calculator to generate the result.

Formula
PITI = Principal&Interest + PropertyTax/12 + Insurance/12 + PMI
Jurisdiction & units
Intended for US, IN, EU, GB, AU, CA. Supports both units where applicable.
Assumptions & limitations
Results use the inputs you provide and published formulas or rate assumptions. They are estimates, not financial, tax, lending, or investment advice.
Review status
Formula and automated QA completed June 21, 2026; independent professional review is pending. Next scheduled review: September 21, 2026.

Validation sources

  • Fannie Mae/Freddie Mac Guidelines
  • CFPB Mortgage Rules
  • HUD Guidelines

Mortgage Calculator — Answer & Method

Calculate monthly mortgage payments with taxes, insurance, and PMI. Full amortization schedule.

Formula: PITI Monthly Payment

PITI = Principal&Interest + PropertyTax/12 + Insurance/12 + PMI

P&I = Principal & Interest (USD/mo)
Tax = Property Tax (USD/yr)
Ins = Insurance (USD/yr)
PMI = Private Mortgage Insurance (USD/mo)

Example Calculation

A $350K home with 20% down at 6.75% for 30 years: $1,817/mo P&I, ~$2,250/mo PITI.

Important limitation

This is an estimate based on your inputs, not financial, lending, tax, or investment advice.

Key Facts

  • PMI is typically required when the down payment is less than 20% of the home price.
  • A 30-year fixed mortgage is the most common loan term in the United States.
  • Property taxes vary significantly by state, averaging about 1.1% of home value nationally.

Sources & Validation

Fannie Mae/Freddie Mac GuidelinesCFPB Mortgage RulesHUD Guidelines

Related Calculators

Deterministic: YesAI-Generated Numbers: NoVerified: 2026-02-12

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