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Free Washington State mortgage calculator for estimating monthly PITI (principal, interest, taxes, insurance), PMI, and HOA. Adjust Washington property tax to match your county effective rate, then compare scenarios for buying or refinancing in Washington.
Last updated: April 18, 2026
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Rates vary by county (King, Pierce, Spokane, etc.)—use your bill or assessor data when possible
Leave blank to use default estimate
Only applies if down payment < 20%
Total Monthly Payment
$2,474.28
Monthly Payment Breakdown:
Loan Amount
$320,000
Total Interest
$408,142
Total Cost of Loan
$970,742
Pay off date: May 1, 2056
Washington Mortgage Tips
Typical inputs
Price, rate, term, tax %
Aligns with how lenders and listing sites quote “total monthly payment.”
Default (illustrative)
~0.98% / year
Replace with your tax bill ÷ assessed value for precision.
PMI rate (annual)
Editable %
Compare 3%, 5%, 10%, and 20% down side by side.
Sensitivity
Rate & term
Useful before locking a Washington mortgage rate.
HOA
Annual dollars
Common in Seattle, Bellevue, Tacoma, Spokane, and Vancouver metro condos.
Outputs
Interest & grand total
Helps compare shorter loans vs investing the payment difference.
Washington home: $400,000 price, 20% down, 6.5% fixed, 30 years, ~0.98% property tax (illustrative), $1,500/yr insurance:
Monthly Payment
~$2,474
Total Interest
~$408,142
Total Cost (est.)
~$970,742
This tool uses standard fixed-rate amortization for principal and interest, then layers Washington housing costs: property tax (as an annual percentage of home value you control as an effective rate), homeowners insurance, PMI when your equity is under 20%, and optional HOA fees.
P&I = P × [r(1+r)^n] ÷ [(1+r)^n − 1]r = annual rate ÷ 12, n = years × 12Monthly property tax = (home value × tax% ) ÷ 12Monthly PMI ≈ (loan × PMI% ) ÷ 12 if down payment < 20%Total = P&I + taxes + insurance + PMI + HOAInsurance defaults to your entered annual premium, or a rough placeholder if left blank—always confirm with a quote.
Visualize how P&I, taxes, insurance, and PMI combine for Puget Sound, Eastern Washington, or statewide markets.
More tools: PMI removal and mortgage recast.
Get a Custom CalculatorTotal estimated payment lands near $2,474/month with PMI at $0. Swap in your local effective tax rate if 0.98% is not representative.
Illustrative only—rates, insurance, and taxes change over time.
Share it with others buying or refinancing in Washington
Suggested hashtags: #Washington #Mortgage #HomeLoan #PITI #Calculator