Property Tax Washington: County Ratios, the 1 Percent Levy Limit, and 2027 Relief

A typical Washington homeowner pays $4,556 a year on a house worth $564,600, a 0.81 percent effective rate, based on Census Bureau figures from the 2024 five-year survey. Among the 39 counties, the ratio stretches from 0.53 percent in San Juan County to 0.91 percent in Pierce County. This Washington property tax calculator takes the value you type, multiplies it by what owners in your county actually pay relative to what their homes are worth, and places the answer next to the local midpoint payment. Enter the assessed value from your notice or a realistic sale price; assessors here value homes at full market value, so those numbers should be close.

The 1 Percent Rule Caps Each District’s Levy, Not Your Bill

Washington runs a budget-based system. Every taxing district covering your parcel (county, city, fire, library, port, schools, and the state) first decides how many dollars it will collect. The assessor then divides that dollar amount by the district’s total assessed value to produce a rate per $1,000. Add up the rates for your tax code area and you have your combined levy rate.

Growth in those dollar amounts is limited. Under RCW 84.55.010, a district’s regular levy can exceed the highest of its last three levies only by its limit factor, plus the value of new construction and improvements added to the roll. RCW 84.55.005 sets the factor at 101 percent; districts with 10,000 or more residents get the lesser of 101 percent or 100 percent plus inflation, unless the governing body adopts a finding of substantial need (RCW 84.55.0101). Above that, local regular levies generally may not exceed $5.90 per $1,000 in aggregate (RCW 84.52.043, with a long list of carve-outs), and the state constitution limits regular levies to 1 percent of true and fair value.

So when assessments jump, rates usually fall. Your bill rises faster than 1 percent when your home gains more than the district average, or when voters approve a levy lid lift or excess levies outside the cap. King County shows the effect: total 2026 taxes rose about 10 percent, to $8.4 billion, while countywide value rose about 5.4 percent, and the assessor credits voter-approved measures for most of the difference.

ESSB 6162 Folds the State School Levy Into One Rate for 2027

Every owner pays a state levy dedicated to K-12 schools. Until now it came in two pieces; for 2026, the equalized rates were $1.36 per $1,000 for part 1 and $0.73 for part 2. Engrossed Substitute Senate Bill 6162 (2026 c 163), effective June 11, 2026, merges them into a single levy for taxes collected in 2027 and later. The Department of Revenue lists the consolidated rate at $2.075355 per $1,000, and statements must now label it the state school levy.

On the statewide median home of $564,600, that piece alone comes to about $1,172. Because it is essentially one rate statewide, local levies drive the gaps between counties.

County Ratios From San Juan (0.53%) to Pierce (0.91%)

Each county figure divides median real estate tax paid by median owner-occupied value, surveys 2020 through 2024. San Juan has the lightest ratio at 0.53 percent despite a median value of $799,200; an $800,000 house there works out to about $4,240 a year. Pend Oreille follows at 0.58 percent, Stevens at 0.59, and Lincoln and Wahkiakum at 0.60.

At the top, Pierce leads at 0.91 percent, then Thurston at 0.88 and Columbia and Walla Walla at 0.85. A $550,000 house in Pierce comes to $5,005 a year, or $417.08 a month, $235 above the county’s $4,770 midpoint payment. In King County, where the median value is $859,900, an $850,000 home at 0.83 percent works out to $7,055 annually ($587.92 monthly), $59 under the $7,114 local median. Spokane sits at 0.84 percent, so a $400,000 house there comes to $3,360, or $280 a month. Snohomish, at 0.77 percent, puts a $700,000 home at $5,390, and Clark, at 0.82, puts a $500,000 home at $4,100.

Only eight counties land above the 0.81 percent statewide figure: Pierce, Thurston, Columbia, Walla Walla, Spokane, King, Clark, and Cowlitz. The other 31 fall below it. The statewide number still exceeds the 0.73 percent county midpoint because King, Pierce, and Clark hold a large share of all owners.

Real 2026 Levy Rates in Seattle and Bellevue

A statement uses your tax code area’s actual rate, not a Census ratio. The King County Assessor’s 2026 codes and levies report gives Seattle’s main levy code (0010) a combined rate of $9.90845 per $1,000, so a $900,000 Seattle home owes about $8,918 for 2026. Bellevue’s code 0300 carries $7.42658, putting a $1,200,000 home there at $8,911.90. Rates swing within a single city: two other Seattle codes carry $12.22112, while a Mercer Island code carries $6.51089.

For the same $900,000 home, the King County ratio gives $7,470, well under the Seattle figure. The ratio reflects payments reported in 2020 through 2024, before recent voter-approved levies, and blends in lower-rate cities. For a King County address, treat the result as a floor and look up your levy code rate.

Senior, Disability, and Veteran Relief After the 2026 Overhaul

The state’s main relief program exempts part of the tax on a primary residence for owners who are 61 or older by December 31 of the filing year, who retired because of a disability, or who are surviving spouses 57 or older of a participant. Starting with taxes due in 2027, veterans qualify with a service-connected disability rating of 40 percent or more.

Eligibility turns on combined disposable income against three county thresholds. ESSB 6162 raised them to 60, 70, and 80 percent of county median household income, reset August 1, 2026 for tax years 2027 through 2029. In King County the tiers are $76,000, $89,000, and $101,000; in Spokane, $56,000, $65,000, and $74,000. Okanogan has the lowest top tier at $49,000.

Every qualifying owner is now exempt from the whole state school levy and all local excess levies. Below the first threshold, regular levies also skip the greater of $80,000 or 80 percent of the home’s value; below the second, the greater of $70,000 or 45 percent, capped at $200,000. The value used for the exemption is frozen when you first qualify. Applicants may take a $7,500 standard deduction each (plus $7,500 for a spouse), exclude up to $6,000 of room rent, and leave out combat-related special compensation. A separate deferral program now reaches 90 percent of county median income ($113,512 in King). Apply through your county assessor.

Yearly Revaluation and the Board of Equalization

RCW 84.40.030 requires assessors to value property at 100 percent of true and fair value, and RCW 84.41.041 requires every county to revalue each year, with a physical inspection at least once every six years. Values are set as of January 1 and drive the taxes payable the following year, so 2026 valuations shape 2027 statements.

If your value looks high, petition the county board of equalization by July 1 or within 30 days after the value notice was mailed, whichever is later; a county may allow up to 60 days (RCW 84.40.038). Bring sales of similar homes near January 1 or an appraisal. County board decisions can go to the State Board of Tax Appeals.

April 30, October 31, and Interest on Late Payments

Statements go out in mid-February. Half is due April 30 and the other half October 31; a bill of $50 or less is due in full in April (RCW 84.56.020). For houses and residential buildings of up to four units, late tax accrues 9 percent annual interest with no penalties, a rule in place since January 1, 2023. Other property pays 12 percent interest plus a 3 percent penalty on June 1 and 8 percent more on December 1.

Once taxes are three years delinquent, the treasurer issues a certificate of delinquency and begins foreclosure (RCW 84.64.050). The treasurer may not sell property eligible for the senior deferral program and must instead require the owner to file a deferral declaration.

What 2027 Brings and When These Figures Refresh

The first statements under ESSB 6162 arrive in February 2027. The bill also has the Department of Revenue report what the consolidated rate would have been without the fixed figure, which could reopen it later. The county ratios here refresh with the next Census five-year release, and the Seattle and Bellevue rates when the King County Assessor posts its 2027 levy report.

Sources: 2024 five-year American Community Survey tables B25103 (median real estate levies owners paid) and B25077 (median owner home value) from the Census Bureau; Washington Department of Revenue guidance on property tax, the 1 percent levy limit, relief program thresholds for 2027 through 2029, and its June 2026 ESSB 6162 notice; Senate Bill Report on ESSB 6162; King County Assessor 2026 codes and levies and 2026 tax overview; RCW Title 84. Your county assessor can confirm the value on file, and your county treasurer can confirm what you owe.