State homebuying guide

Washington Mortgage Calculator Guide

When I use a statewide mortgage page, I treat the first result as a reference point, not a promise. In Washington, the statewide home-value benchmark gives us a consistent place to begin, while the city pages show why the same down payment and interest rate can still produce different monthly totals. The current benchmark is $591,900, and this guide covers 50 city calculators. That sequence keeps the first estimate simple without hiding the local details that can change a real monthly payment.

State benchmark
$591,900
City calculators
50

Need more than a statewide benchmark?

Use the complete mortgage payment and affordability calculator to enter your own purchase price, income, debts, loan program, closing costs, and extra-payment plan.

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Down-payment comparison

What 5%, 10%, and 20% down could look like in Washington

These examples use the $591,900 statewide benchmark, a 6.75% 30-year fixed planning rate, the 0.79% midpoint property-tax assumption, and 0.35% annually for homeowners insurance. PMI is illustrated at 1% annually below 20% down.

Estimated Washington mortgage payments with 5%, 10%, and 20% down
Down paymentCash downLoan amountPrincipal & interestProperty taxInsurance & PMIEstimated monthly payment
5%$29,595$562,305$3,647$390$666$4,703
10%$59,190$532,710$3,455$390$666$4,511
20%$118,380$473,520$3,071$390$173$3,634

The examples do not include HOA dues, closing costs, discount points, lender fees, flood insurance, or property-specific insurance adjustments. Change the city calculator inputs before using a result for a budget.

Local variation

Why one Washington estimate should not represent every city

The available city-page tax assumptions run from 0.66% for Camano Island to 1.00% for Auburn, with a midpoint of 0.79% used in the statewide examples. That spread is a reminder to verify the parcel, assessment, exemptions, and taxing district before relying on a monthly number. Camano Island and Pullman and Auburn are useful starting points for seeing how the planning assumptions vary inside Washington.

These are effective-rate planning assumptions from 2024 public data, published in this system in 2026. Actual tax bills depend on assessed value, exemptions, levies, and the property's taxing districts.

Cash-to-close research

Homebuyer assistance in Washington

The state-level research list currently contains 11 programs. Home Advantage Downpayment Assistance and Covenant Homeownership Program are included as a place to begin, not as a promise of approval. Funding, income limits, first-time-buyer definitions, participating lenders, and eligible locations can change, so I would confirm the current rules before counting assistance as cash available at closing.

Home Advantage Downpayment Assistance

Offers downpayment assistance loans for homebuyers using the Home Advantage mortgage program.

Verify program details

Covenant Homeownership Program

Provides up to 20% of the home's cost (or $150,000) plus closing costs in downpayment assistance for first-time homebuyers.

Verify program details

Home Rehabilitation Grant Program (HRGP)

Offers grants to low-income homeowners in eligible rural areas for critical home repairs.

Verify program details

USDA Single Family Housing Repair Loans & Grants

Provides loans up to $40,000 and grants up to $10,000 for very-low-income homeowners to repair, improve, or modernize their homes.

Verify program details

A practical review

Before relying on a Washington payment estimate

01

Replace the statewide Washington benchmark with the price of the homes actually being considered.

02

Open the relevant city calculator and verify the property-tax assumption against the parcel or local assessor.

03

Get a property-specific homeowners-insurance estimate and add HOA dues when they apply.

04

Compare several interest rates and down payments instead of budgeting from one optimistic scenario.

05

Confirm assistance rules with the official program source before reducing estimated cash to close.

Common questions

Planning a mortgage in Washington

How much is an estimated mortgage payment in Washington?

Using the current $591,900 statewide home-value benchmark, 20% down, a 6.75% 30-year planning rate, the 0.79% midpoint property-tax assumption, and a 0.35% insurance assumption, the estimated monthly payment is $3,634. Actual property, loan, tax, and insurance details can differ.

Does the Washington mortgage estimate include property taxes?

Yes. The statewide examples use a 0.79% midpoint from the available city-page assumptions. A property-specific estimate should use the actual parcel, assessment, exemptions, and local taxing districts.

How much down payment should I compare in Washington?

The page compares 5%, 10%, and 20% down. A smaller down payment reduces upfront cash but can increase the loan balance and may add mortgage insurance. Program and loan requirements vary.

Where should I verify Washington homebuyer assistance?

Start with each linked official program source. Verify current funding, income limits, purchase-price limits, property rules, participating lenders, and first-time-buyer definitions before relying on assistance.

Planning rate

6.75%

Tax midpoint

0.79%

Benchmark period

August 2026