Grant County, Washington Property Taxes
Property Taxes in Grant County, Washington
Median Grant County effective property tax rate: 1.12%, significantly higher than the national median of 1.02%.
Median Grant County home value: $160,157
Median annual Grant County tax bill: $1,689, $711 lower than the national median property tax bill of $2,400.
How are property taxes in Grant County calculated?
Property taxes in Grant County are calculated based on the tax assessed value, which is often lower than the actual market value due to property tax exemptions such as the homestead or senior exemption.
Understanding your county's property tax system, exemptions, and reduction opportunities can lead to significant savings. Whether you live in Grant County or another part of Grant County, knowing local tax details benefits homeowners and investors.
Last Updated April 13, 2026
Grant County, Washington Property Tax Bill Calculator
$100,000
$1,500,000
$3,000,000
Median Effective Tax Rate
1.12%
Estimate Property Tax Bill
$1,794
$1,665
How Does the Grant County Property Tax Calculator Work?
Use this Grant County property tax calculator to estimate your annual property tax bill. Enter your property's assessed value and the calculator applies Grant County's median effective tax rate of 1.12% to generate your estimate.
Enter your property's estimated assessed value — the value assigned for tax purposes, which is typically lower than market value after applicable exemptions. The calculator uses the median effective rate for a more accurate estimate than the statutory millage rate alone.
Your actual bill may vary based on your specific exemptions, local school district levies, and any special assessment districts that apply to your property. Grant County's median effective tax rate is higher than Washington's 0.92% median, and the county's $1,689 median tax bill is lower than the national median tax bill of $2,400.
For a more precise estimate, scroll down to explore city and ZIP code-level tax rate trends across Grant County.
Property Tax Rates Across Grant County, Washington
What Are Effective Property Tax Rates Across Grant County?
Local government entities set tax rates, which vary widely across Grant County. Each year, the county estimates its budget for public services and divides that total by the assessed value of all taxable property within its jurisdiction.
Below, compare Grant County's effective property tax rate to other counties in Washington or the U.S. median of 1.02%.
Grant County's median effective rate stands at 1.12%, which is higher than the national median of 1.02%. Within Grant County, the highest rate is found in OTHELLO RURAL at 1.41%, while HARTLINE has the lowest at 0.84%.
These variations reflect differences in local school district levies, Local improvement districts (LIDs) assessments, and special district bonds — which compound the base county rate.
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Grant County Tax Rate
1.12%
Our median effective property tax rate (tax bill ÷ assessor's market value) accounts for exemptions and deductions, making it more accurate than the general median tax rate, which is the midpoint of statutory rates before adjustments.
Median Effective Washington Tax Rate
0.92%
Median Effective United States Tax Rate
1.02%
Property Tax Rates Across Grant County, Washington
| City | 10th Percentile | 25th Percentile | Median Tax Rate | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Beverly | 1.04% | 1.06% | 1.08% | 1.12% | 1.20% |
| Coulee City | 0.75% | 0.83% | 0.86% | 0.94% | 2.92% |
| Coulee City Rural | 0.54% | 0.77% | 0.85% | 1.06% | 1.12% |
| Electric City | 0.84% | 0.85% | 0.90% | 1.17% | 1.31% |
| Ephrata | 1.07% | 1.13% | 1.13% | 1.16% | 1.23% |
| Ephrata Rural | 1.13% | 1.16% | 1.18% | 1.22% | 1.28% |
| George | 0.88% | 0.99% | 1.03% | 1.03% | 1.05% |
| Grand Coulee | 0.89% | 0.92% | 1.01% | 1.68% | 3.33% |
| Hartline | 0.82% | 0.82% | 0.84% | 1.11% | 1.24% |
| Marlin | 0.84% | 0.92% | 0.93% | 1.06% | 1.12% |
| Mattawa | 0.84% | 0.96% | 0.96% | 0.97% | 0.98% |
| Mattawa Rural | 0.79% | 0.96% | 0.98% | 1.06% | 1.10% |
| Moses Lake | 1.01% | 1.12% | 1.16% | 1.24% | 1.54% |
| Moses Lake Rural | 0.97% | 1.05% | 1.19% | 1.32% | 1.44% |
| Othello | 1.06% | 1.18% | 1.29% | 1.49% | 1.68% |
| Othello Rural | 1.19% | 1.35% | 1.41% | 1.41% | 1.49% |
| Quincy | 0.81% | 0.82% | 0.91% | 1.02% | 1.04% |
| Quincy Rural | 1.02% | 1.02% | 1.04% | 1.06% | 2.16% |
| Royal City | 0.96% | 1.02% | 1.03% | 1.07% | 1.82% |
| Royal City Rural | 1.04% | 1.07% | 1.08% | 1.17% | 1.40% |
| Soap Lake | 0.73% | 0.95% | 0.97% | 1.08% | 1.24% |
| Soap Lake Rural | 0.95% | 0.96% | 1.09% | 1.16% | 1.24% |
| Stratford | 0.88% | 1.05% | 1.14% | 1.74% | 2.30% |
| Warden | 0.99% | 0.99% | 1.01% | 1.15% | 1.31% |
| Warden Rural | 1.01% | 1.02% | 1.02% | 1.04% | 1.05% |
| Wilson Creek | 0.87% | 0.91% | 0.93% | 1.00% | 1.56% |
| Almira | N/A | N/A | N/A | N/A | N/A |
| Almira Rural | N/A | N/A | N/A | N/A | N/A |
| Beverly Rural | N/A | N/A | N/A | N/A | N/A |
| Coulee Dam | N/A | N/A | N/A | N/A | N/A |
| Desert Aire | N/A | N/A | N/A | N/A | N/A |
| Des Moines | N/A | N/A | N/A | N/A | N/A |
| Electric City Rural | N/A | N/A | N/A | N/A | N/A |
| George Rural | N/A | N/A | N/A | N/A | N/A |
| Grand Coulee Rural | N/A | N/A | N/A | N/A | N/A |
| Kennewick | N/A | N/A | N/A | N/A | N/A |
| Krupp | N/A | N/A | N/A | N/A | N/A |
| Seattle | N/A | N/A | N/A | N/A | N/A |
| Shoreline | N/A | N/A | N/A | N/A | N/A |
| Wilson Creek Rural | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Assessment Values Across Grant County, Washington
When examining property taxes in Grant County, understanding the distinction between "market value" and "assessed value" is crucial.
The market value is what a willing buyer would pay to a willing seller in an open and competitive market, often influenced by location, property condition, and economic market trends. The Grant County assessor estimates the market value for tax purposes.
The assessed value is the market value minus any applicable exemptions or limits determined by local laws and offerings. The tax assessed value is the figure used to calculate your property taxes or the amount multiplied by your tax rate to get your tax bill.
Assessment notices are sent in the spring each year and typically reach your mailbox by the middle of May. Each property owner receives an assessment notice that contains both the market value and assessed value, along with an estimate of your property tax bill.
The median tax bill in Grant County is $1,689, which is below the national median property tax bill of $2,400 and reflects a county where tax bills vary widely. Moses Lake has the highest median tax bill at $2,482, while George has the lowest at $248. Quincy has the highest median home price at $231,130.
Property Tax Assessment Values Across Grant County, Washington
Source: Ownwell
$24,000
$127,565
$231,130
Median Grant County Market Value
$160,157
Median Washington Market Value
$501,600
Median United States Market Value
$235,294
Property Tax Assessment Values Across Grant County, Washington
| City | 10th Percentile | 25th Percentile | Median Home Price | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Beverly | $6,562 | $20,052 | $38,235 | $78,521 | $160,390 |
| Coulee City | $2,977 | $30,135 | $90,585 | $172,460 | $330,351 |
| Coulee City Rural | $2,926 | $3,940 | $10,660 | $197,320 | $434,899 |
| Electric City | $9,471 | $23,050 | $94,083 | $232,345 | $361,377 |
| Ephrata | $40,192 | $109,194 | $181,438 | $274,700 | $365,620 |
| Ephrata Rural | $48,790 | $73,025 | $179,544 | $364,556 | $474,260 |
| George | $19,592 | $24,000 | $24,000 | $73,224 | $330,760 |
| Grand Coulee | $3,000 | $8,650 | $45,771 | $107,051 | $189,732 |
| Hartline | $3,150 | $4,028 | $67,095 | $118,840 | $212,018 |
| Marlin | $18,535 | $63,682 | $102,543 | $146,592 | $267,075 |
| Mattawa | $9,486 | $69,745 | $188,000 | $303,898 | $431,256 |
| Mattawa Rural | $17,396 | $36,240 | $75,895 | $89,150 | $208,044 |
| Moses Lake | $25,540 | $116,117 | $217,747 | $331,663 | $452,398 |
| Moses Lake Rural | $34,410 | $65,000 | $136,000 | $317,864 | $537,656 |
| Othello | $17,790 | $43,500 | $84,964 | $213,830 | $319,077 |
| Othello Rural | $35,000 | $70,000 | $70,000 | $76,875 | $335,534 |
| Quincy | $26,569 | $100,839 | $231,130 | $354,055 | $452,713 |
| Quincy Rural | $3,418 | $42,000 | $75,620 | $231,377 | $452,311 |
| Royal City | $3,853 | $46,372 | $138,632 | $247,411 | $333,512 |
| Royal City Rural | $34,781 | $41,512 | $68,285 | $292,840 | $424,071 |
| Soap Lake | $4,669 | $22,762 | $100,789 | $210,073 | $310,711 |
| Soap Lake Rural | $11,716 | $26,888 | $70,332 | $172,621 | $278,026 |
| Stratford | $15,456 | $39,819 | $68,460 | $167,506 | $232,391 |
| Warden | $5,625 | $11,250 | $81,218 | $171,476 | $241,746 |
| Warden Rural | $39,544 | $53,664 | $114,176 | $206,690 | $299,854 |
| Wilson Creek | $2,140 | $7,046 | $40,480 | $87,411 | $156,416 |
| Almira | N/A | N/A | N/A | N/A | N/A |
| Almira Rural | N/A | N/A | N/A | N/A | N/A |
| Beverly Rural | N/A | N/A | N/A | N/A | N/A |
| Coulee Dam | N/A | N/A | N/A | N/A | N/A |
| Desert Aire | N/A | N/A | N/A | N/A | N/A |
| Des Moines | N/A | N/A | N/A | N/A | N/A |
| Electric City Rural | N/A | N/A | N/A | N/A | N/A |
| George Rural | N/A | N/A | N/A | N/A | N/A |
| Grand Coulee Rural | N/A | N/A | N/A | N/A | N/A |
| Kennewick | N/A | N/A | N/A | N/A | N/A |
| Krupp | N/A | N/A | N/A | N/A | N/A |
| Seattle | N/A | N/A | N/A | N/A | N/A |
| Shoreline | N/A | N/A | N/A | N/A | N/A |
| Wilson Creek Rural | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Property Tax Bills Across Grant County, Washington
Property tax bills in Grant County are based on the assessed value of a home and the local tax rate applied to that value. When a property’s market value changes, the assessed value can change too, which affects the final bill. Local taxing districts, such as schools and county services, also play a role in determining how much a homeowner owes each year.
With a median home price of $160,157, tax bills in the county can vary widely depending on location and property characteristics. The 25th percentile tax bill is $547, while the 75th percentile is $3,101 and the 90th percentile reaches $4,354. That range shows how much assessed value and local levies can influence costs for homeowners.
Some areas face much higher bills than others. The highest median tax bill is $2,482 in Moses Lake, while the lowest median tax bill is $248 in George. For homeowners, this means property taxes can have a meaningful impact on annual housing costs, especially when assessed values rise faster than expected.
Median Grant County Tax Bill
$1,689
Median Washington Tax Bill
$4,512
Median United States Tax Bill
$2,400
Property Tax Bills Across Grant County, Washington
| City | 10th Percentile | 25th Percentile | Median Tax Bill | 75th Percentile | 90th Percentile |
|---|---|---|---|---|---|
| Beverly | $81 | $212 | $403 | $755 | $1,681 |
| Coulee City | $82 | $250 | $739 | $1,385 | $2,641 |
| Coulee City Rural | $24 | $34 | $100 | $1,020 | $3,857 |
| Electric City | $135 | $245 | $793 | $1,977 | $3,143 |
| Ephrata | $292 | $1,017 | $1,989 | $3,116 | $4,197 |
| Ephrata Rural | $590 | $829 | $2,144 | $4,328 | $5,580 |
| George | $185 | $248 | $248 | $754 | $3,234 |
| Grand Coulee | $87 | $126 | $409 | $950 | $1,655 |
| Hartline | $39 | $46 | $440 | $969 | $1,730 |
| Marlin | $126 | $593 | $797 | $1,247 | $1,954 |
| Mattawa | $68 | $668 | $1,718 | $2,878 | $4,103 |
| Mattawa Rural | $178 | $394 | $743 | $870 | $2,350 |
| Moses Lake | $413 | $1,282 | $2,482 | $3,743 | $5,031 |
| Moses Lake Rural | $285 | $814 | $1,626 | $3,440 | $5,415 |
| Othello | $261 | $617 | $1,072 | $2,460 | $3,718 |
| Othello Rural | $784 | $988 | $988 | $1,087 | $4,360 |
| Quincy | $222 | $776 | $2,134 | $3,182 | $4,581 |
| Quincy Rural | $104 | $442 | $775 | $2,230 | $4,618 |
| Royal City | $52 | $393 | $1,272 | $2,472 | $3,328 |
| Royal City Rural | $371 | $532 | $727 | $3,216 | $4,418 |
| Soap Lake | $47 | $169 | $796 | $1,883 | $2,948 |
| Soap Lake Rural | $133 | $267 | $764 | $1,863 | $3,009 |
| Stratford | $40 | $621 | $1,054 | $1,865 | $2,698 |
| Warden | $74 | $105 | $765 | $1,670 | $2,420 |
| Warden Rural | $464 | $589 | $1,179 | $2,231 | $3,045 |
| Wilson Creek | $32 | $43 | $325 | $740 | $1,425 |
| Almira | N/A | N/A | N/A | N/A | N/A |
| Almira Rural | N/A | N/A | N/A | N/A | N/A |
| Beverly Rural | N/A | N/A | N/A | N/A | N/A |
| Coulee Dam | N/A | N/A | N/A | N/A | N/A |
| Desert Aire | N/A | N/A | N/A | N/A | N/A |
| Des Moines | N/A | N/A | N/A | N/A | N/A |
| Electric City Rural | N/A | N/A | N/A | N/A | N/A |
| George Rural | N/A | N/A | N/A | N/A | N/A |
| Grand Coulee Rural | N/A | N/A | N/A | N/A | N/A |
| Kennewick | N/A | N/A | N/A | N/A | N/A |
| Krupp | N/A | N/A | N/A | N/A | N/A |
| Seattle | N/A | N/A | N/A | N/A | N/A |
| Shoreline | N/A | N/A | N/A | N/A | N/A |
| Wilson Creek Rural | N/A | N/A | N/A | N/A | N/A |
Source: Ownwell
Don't miss the deadline to appeal!
Dates | |
|---|---|
| Appeal Deadline | July 1 |
| Tax Bill | |
| Issued | February 10 |
| Due Date #1 | April 30 |
| Due Date #2 | October 31 |
Links | |
|---|---|
| Grant Tax Assessor | |
| Website | grantwa-taxsifter.publicaccessnow.com |