Washington cuts the Mattawa Transportation Benefit District tax to 8.3% from 1 October 2026
This page records one dated change. For the rules in United States as they stand today, see the United States guide →
- Jurisdiction
- United States
- Tax
- Sales Tax
- Change type
- Rate change
- Status
- In force
- Impact
- Action required
- Effective
- 1 October 2026
- Authority
- Washington State Department of Revenue
- Systems
- Tax engine
- Verified
- Fetched from official source · high confidence
Retailers making sales into Mattawa, Grant County, Washington (location code 1308), and anyone maintaining Washington local rate tables.
Update the Mattawa, WA combined rate to 8.3% from 1 October 2026.
Tax engine
The Washington Department of Revenue's fourth-quarter 2026 local sales tax change notice: from 1 October 2026 the City of Mattawa (Grant County) Transportation Benefit District tax falls by 0.1%, lowering the combined rate in Mattawa (location code 1308) from 8.4% to 8.3%.
What changed in detail
Effective 1 October 2026, the City of Mattawa (Grant County) Transportation Benefit District tax falls by 0.1 percentage point. The Washington Department of Revenue’s fourth-quarter 2026 local sales tax change notice lowers Mattawa’s combined rate (location code 1308) from 8.4% to 8.3% — the local component drops from 0.0280 to 0.0180 (state rate unchanged at 0.065).
What it means
A single-jurisdiction decrease is the easy case operationally, but it is also the one most likely to be skipped if a rate feed only flags increases. Sellers resolving Washington rates by location code should confirm code 1308 updates to 8.3% for transactions on or after 1 October 2026.
Proof
will decrease one-tenth of one percent (.001)
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