Mortgage Calculator – Interactive Single Page

Mortgage Calculator

Estimate your monthly mortgage payment with a clear breakdown of principal & interest, taxes, insurance, PMI and HOA. Optimized for US/EU style inputs.

Total purchase price.
Enter either % of price or a fixed amount.
Annual percentage rate.
Common terms: 15, 20, 30
Annual rate as % of home price.
Annual premium estimate.
If down < 20%, add PMI (approx.).
Optional homeowners association fee.
Tip: Press Enter or click Calculate.
Monthly Payment (Total)
Principal & Interest
Taxes • Insurance • PMI • HOA
Show payment breakdown
Loan Amount
Down Payment
LTV (at closing)
Total Interest (life of loan)
Show amortization schedule
Month Payment Principal Interest Balance
Guide

How to use

  1. Enter the Home Price and your Down Payment (as % or amount).
  2. Add your loan Term (years) and Interest Rate (APR).
  3. Optionally include Property Tax (as % of price), Insurance (yearly), PMI (% yearly), and HOA (monthly).
  4. Click Calculate. Review the breakdown and, if needed, open the Amortization schedule.

Benefits

  • Clear monthly cost with principal & interest (P&I) plus taxes/insurance/PMI/HOA.
  • LTV indicator shows if PMI is likely at closing (LTV ≥ 80%).
  • Amortization schedule to see how principal builds over time.
  • CSV export for your records or advisor.

How it calculates

Monthly principal & interest is computed using the standard fixed‑rate formula:


M = P · r · (1 + r)^n / ((1 + r)^n − 1)

Where:
  P = loan amount (price − down payment)
  r = monthly rate (APR / 12)
  n = total payments (years · 12)
          

We then add monthly estimates for taxes (price × tax% ÷ 12), insurance (annual ÷ 12), PMI (loan × pmi% ÷ 12), and HOA.

Short disclaimer

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