How are property tax rates determined in Washington?

Property tax rates in Washington are set by each taxing district (municipality, school district, park district, library, etc.) based on their annual levy (the amount of tax revenue they need). The rate is calculated by dividing the levy by the total assessed value of all property in the district.

What is the composite tax rate?

The composite tax rate is the sum of all overlapping taxing district rates that apply to a specific property. A typical property may be taxed by several overlapping districts. The composite rate determines your total tax bill when multiplied by your property's assessed value.

Why do tax rates vary within the same town?

Properties within the same municipality can have different composite rates because overlapping districts (school, park, fire, library) have different boundaries. A home in one school district may have a different rate than a home two blocks away in a different school district.

Prosser, WA Property Tax Rate 2026 — Full Breakdown by District

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Showing latest tax year with year-over-year changes. Full rate history available with a paid plan. View plans →

Property Tax — Tax Year 2025 (payable 2026)i

WA DOR Levy Detail

Municipal levy rate only. Does not include county, school, or special district levies. Your total property tax rate will be higher.

Composite Ratei

0.52%–0.89%-3.5%YoY

Varies by school district

Municipal Portioni

0.1811%-7.5%YoY25.7% of total

Effective Ratei

0.52%–0.89%

Est. Annual Taxi

$2K–$3K

Median Home Valuei

$314,000

Total Leviedi

$246.8M

Tax Per Capitai

$268

Rate varies by school district. Your actual rate depends on which school district your property falls in.

Rate Trend — click a year to explorei

20242025

Municipal

Other Districts

Where Your Tax Dollar Goesi

$0.30 Richland #400 Enrichment

$0.27 Prosser #116 Bond

$0.26 Prosser

$0.25 Finley #53 Enrichment

$0.25 Prosser #116 Enrichment

$0.24 Grandview #200 Bond

$0.22 Kennewick #17 Enrichment

$0.21 Fire Dist #2

$0.21 State School Part 1

$0.20 Grandview #200 Enrichment

$0.19 Fire Dist #4

$0.18 Kiona-Benton City #52 Enrichment

$0.18 Fire Dist #1

$0.17 Fire Dist #6

$0.17 Kennewick #17 Bond

$0.17 Richland #400 Bond

$0.16 West Benton RFA

$0.14 Benton County

$0.11 State School Part 2

$0.11 Finley #53 Bond

$0.10 Richland #400 Cap Proj

$0.10 Fire Dist #5

$0.09 Paterson #50 Enrichment

$0.07 EMS Fire Dist #4

$0.05 EMS Fire Dist #2

$0.04 Port of Benton

$0.04 Prosser #116 Cap Proj

$0.04 Kennewick #17 Cap Proj

$0.04 Hospital Dist Prosser

$0.03 Mid-Columbia Inter Co Library

$0.03 Port of Kennewick

$0.02 Fire Dist #4 Excess

$0.01 Fire Dist #2 Excess

$0.01 Paterson #50 Bond

$0.01 Hospital Dist Kennewick Gen

$0.01 Fire #1 Non-Voted GO Bond

$0.00 Fire Dist #1 Excess

Estimated Tax by Home Valuei

$200K

$1,033–$1,785

$250K

$1,291–$2,231

$300K

$1,550–$2,677

$350K

$1,808–$3,123

$400K

$2,066–$3,570

$450K

$2,325–$4,016

$500K

$2,583–$4,462

Highlighted value is closest to median home value ($314K)

37 Overlapping Taxing Districtsi

Richland #400 EnrichmentUnit K-12

29.9%0.2103%

$31.6M levied

Prosser #116 BondUnit K-12

26.5%0.1867%

$4.3M levied

Prosseri

25.7%0.1811%

$1.7M levied

Finley #53 EnrichmentUnit K-12

25%0.1759%

$1.5M levied

Prosser #116 EnrichmentUnit K-12

24.9%0.1751%

$4.1M levied

Grandview #200 BondUnit K-12

24.3%0.1712%

$181K levied

Kennewick #17 EnrichmentUnit K-12

21.6%0.1521%

$24.0M levied

Fire Dist #2i

21.3%0.1500%

$1.7M levied

State School Part 1Community College

20.9%0.1474%

$53.4M levied

Grandview #200 EnrichmentUnit K-12

19.5%0.1374%

$145K levied

Fire Dist #4i

18.9%0.1330%

$4.8M levied

Kiona-Benton City #52 EnrichmentUnit K-12

18.3%0.1287%

$1.9M levied

Fire Dist #1i

18.1%0.1278%

$5.0M levied

Fire Dist #6i

17.4%0.1227%

$977K levied

Kennewick #17 BondUnit K-12

17.2%0.1211%

$19.1M levied

Richland #400 BondUnit K-12

16.7%0.1175%

$17.6M levied

West Benton RFAi

15.8%0.1115%

$2.5M levied

Benton Countyi

14.2%0.1003%

$7.9M levied

State School Part 2Community College

11.3%0.0794%

$28.6M levied

Finley #53 BondUnit K-12

11%0.0778%

$666K levied

Richland #400 Cap ProjUnit K-12

9.6%0.0678%

$10.2M levied

Fire Dist #5i

9.5%0.0671%

$99K levied

Paterson #50 EnrichmentUnit K-12

8.9%0.0629%

$369K levied

EMS Fire Dist #4i

7.1%0.0500%

$1.8M levied

EMS Fire Dist #2i

5.3%0.0377%

$431K levied

Port of Benton

4.3%0.0305%

$3.2M levied

Prosser #116 Cap ProjUnit K-12

4.3%0.0305%

$707K levied

Kennewick #17 Cap ProjUnit K-12

4.3%0.0301%

$4.8M levied

Hospital Dist Prosseri

3.6%0.0256%

$1.0M levied

Mid-Columbia Inter Co Libraryi

3.4%0.0238%

$4.8M levied

Port of Kennewick

2.9%0.0201%

$5.2M levied

Fire Dist #4 Excessi

2%0.0141%

$506K levied

Fire Dist #2 Excessi

1.5%0.0109%

$124K levied

Paterson #50 BondUnit K-12

1.2%0.0083%

$49K levied

Hospital Dist Kennewick Geni

1.1%0.0080%

$1.7M levied

Fire #1 Non-Voted GO Bondi

0.7%0.0046%

$180K levied

Fire Dist #1 Excessi

0.3%0.0018%

$74K levied

Prosser, WA Property Tax Rate 2026 — Full Breakdown by District