Property tax in Grant County, Washington

By Brent Chudoba, editor Updated September 23, 2026

The median property tax bill in Grant County, Washington is $2,339 a year, which is about 0.78% of the county's median home value of $299,500. That effective rate is higher than the typical Washington county (0.73%) and lower than the national median (0.81%). These are American Community Survey 5-year estimates (2024); your own bill depends on your home's assessed value and any exemptions.

Estimate the property tax on a home in Grant County

Enter a home's market value for a ballpark at Grant County's average effective rate of 0.78% (Census). The real bill depends on the home's assessed value, the millage where it sits and any exemptions.

Home market value

Estimated property tax: $2,336 / year

Property tax in Grant County at a glance

Grant County, Washington property tax (Census ACS, reviewed September 23, 2026)
Measure	Value
Median annual property tax	$2,339
Median home value	$299,500
Effective tax rate	0.78%
Typical Washington county rate	0.73%
National median county rate	0.81%

Effective rate = median real estate taxes paid divided by median home value. Source: U.S. Census Bureau, American Community Survey 5-year estimates.

How does Grant County compare in Washington?

Among Washington's 39 counties, Grant County has the 14th highest effective property-tax rate: 13 rank higher and 25 rank lower. That is on the higher side for Washington. Nationally, it ranks 1659th of 3135 US counties by effective rate. See every Washington county ranked.

How much do homeowners in Grant County actually pay?

The median is only the middle bill. Across Grant County's 23,461 owner-occupied homes, 32.7% pay $3,000 or more a year in property tax, 53.8% pay at least $2,000, and 15.7% pay under $800. Another 6.7% report paying no property tax at all, which usually means an exemption covers the whole bill.

Annual property tax paid by Grant County homeowners (Census ACS 2020-2024)
Annual bill	Homes	Share
Under $800	3,675	15.7%
$800 to $1,499	3,063	13.1%
$1,500 to $1,999	2,529	10.8%
$2,000 to $2,999	4,950	21.1%
$3,000 or more	7,670	32.7%
No property tax paid	1,574	6.7%

Owners with a mortgage pay a median of $2,626 and owners without one pay $1,726. Owners who have paid off a home have usually held it longer, and in states that cap how fast an existing owner's assessment can rise, long-held homes carry lower assessed values. Census table B25103.

How does the Grant County property tax bill compare with local incomes?

The median property tax bill of $2,339 is about 2.8% of the median income of Grant County homeowner households, $84,389 a year. That compares two middles, so a retiree in a long-held home can pay a far larger share. 66.3% of Grant County's occupied homes are lived in by their owners; renters pay property tax too, just folded into rent.

Have property taxes gone up in Grant County?

Yes. The median bill went from $1,913 in 2015-2019 to $2,339 in 2020-2024, a 22.3% rise. Over the same span the median home value moved 68.7%, from $177,500 to $299,500. Bills rose more slowly than values, which is what assessment caps and falling millage rates do: the county is taxing a smaller share of each home's worth.

Two Census ACS 5-year periods with no survey years in common, in each period's own dollars. A change counts only if it exceeds the combined 90% margin of error.

Property tax in counties next to Grant County

Grant County borders 8 counties.

Grant County and its neighbors, highest effective rate first (Census ACS 2020-2024)
County	Effective rate	Median bill	Median home value
Adams County, WA	0.79%	$2,147	$273,300
Yakima County, WA	0.79%	$2,463	$310,100
Benton County, WA	0.78%	$3,163	$407,800
Grant County, WA (this county)	0.78%	$2,339	$299,500
Douglas County, WA	0.77%	$3,319	$432,500
Okanogan County, WA	0.76%	$2,281	$299,800
Franklin County, WA	0.73%	$2,750	$379,300
Kittitas County, WA	0.71%	$3,552	$497,400
Lincoln County, WA	0.6%	$1,744	$292,800

How is a home assessed in Grant County?

Washington assesses homes at 100% of market value in every county, Grant County included. How Washington assesses and reappraises homes.

Is there a homestead exemption in Grant County?

No. Washington has no general homestead exemption; the broad protection is the 1% limit on how much a taxing district's regular levy can grow each year without voter approval. That is the Washington rule, and it applies in Grant County. Washington's exemptions and relief programs in full.

When are property taxes due in Grant County?

Two installments: the first half by April 30 and the second by October 31 if the total is over $50. Smaller bills are due in full by April 30. The county treasurer bills and collects.

Washington splits the bill into 2 installments. That is the Washington rule. Grant County issues and collects the bill, so the dates printed on your statement are the ones that bind you.

How to appeal your Grant County property assessment

You contest the assessed value with the County Board of Equalization, then the Washington Board of Tax Appeals. The filing deadline is typically July 1, or 30 to 60 days after your value notice, whichever is later. That is the Washington rule; Grant County sets the exact dates and forms. The Washington appeal process step by step.

Washington rules from primary state sources, reviewed September 7, 2026; sources on the Washington page.

Work out your own numbers

Sources

Median real estate taxes paid and median home value for Grant County, Washington: U.S. Census Bureau, American Community Survey 5-year estimates (2020-2024), tables B25103, B25077, B25102, B25119 and B25003; the five-year comparison uses the 2015-2019 estimates. Neighboring counties: Census county adjacency file.