Washington Mortgage Calculator
Washington has a below-average property tax rate (~0.84%) — but Seattle-metro median values near $640K produce among the highest bills in the Pacific Northwest.
Washington's effective property-tax rate runs around 0.84%, below the national mean. Median home values in the Seattle-Bellevue metro exceed $640,000, driving absolute tax bills among the highest in the Pacific Northwest despite the low rate. Earthquake risk is real but insurance markets remain accessible. Washington buyers typically use conventional conforming or jumbo loans; VA is common near Joint Base Lewis-McChord.
Mortgage Calculator
How Mortgage Calculations Work
Loan Amount
We calculate the principal by subtracting your down payment from the home price.
Monthly Payment
Using the loan amount, interest rate, and term, we calculate your fixed monthly payment.
Amortization
Each payment is split between principal and interest, with early payments going more toward interest.
What factors affect your mortgage payment?
- Home Price: The total purchase price of your property
- Down Payment: Large down payments reduce your loan amount and monthly payment
- Interest Rate: Higher rates mean higher monthly payments and more total interest
- Loan Term: Longer terms have lower monthly payments but more total interest
Washington Mortgage: Median-Priced Home Example
| Item | Value | Notes |
|---|---|---|
| Median home value | $640,000 | Zillow ZHVI Q2 2026 |
| Loan (80% LTV) | $512,000 | 20% down avoids PMI |
| P&I (6.5% / 30yr) | $3,236/mo | 2026 baseline conforming rate |
| Property tax | $448/mo | 0.84% effective rate |
| Homeowners insurance | $117/mo | $1,400/yr (Earthquake risk; wildfire exposure in eastern counties.) |
| Total PITI | $3,801/mo | All-in monthly housing cost |
| Conforming loan limit | $832,750 | FHFA 2026 baseline |
Numbers are illustrative. Your rate, taxes, and insurance vary by county, credit score, and exact property. Use the calculator above to model your scenario.
Washington Sources & References
- Washington Department of Revenue / Tax Foundation: effective residential property-tax rate of 0.84%.
- Insurance Information Institute (III): average annual homeowners-insurance premium of $1,400 in Washington.
- Zillow ZHVI Q2 2026: Washington median home value $640,000.
- Federal Housing Finance Agency (FHFA): 2026 conforming loan limit of $832,750 for Washington.
- FEMA National Risk Index: earthquake risk; wildfire exposure in eastern counties.
Verified accuracy
Cross-checked against authoritative formulas (IRS, NIST, ACM) and updated for 2025/2026 tax years and rates.
Instant results
No server roundtrip. All math runs in your browser so results appear the moment you finish typing.
Your data stays private
We never collect, store, or transmit your inputs. Every calculation runs locally in your browser.
Learn as you calculate
Each calculator includes the formula, plain-English explanation, and FAQs so you understand the result.
Estimates only. Calculator results are for educational and planning purposes — not professional advice. For binding decisions on taxes, investments, health, or legal matters, consult a qualified professional.