Washington County, Ohio Sales Tax Rate
Buying anywhere in Washington County? The combined sales tax rate is 7.25%. Below is the full breakdown and a calculator already set to Washington County.
- Ohio state base5.75%
- Washington County & transit1.50%
- Total you pay7.25%
Washington County's 7.25% rate sits above the statewide average of 7.14%. Across Ohio, combined rates run from 6.50% to 8.00%, so where you buy genuinely changes the bill. Ohio is unusual here: for most sales by an Ohio seller to an Ohio buyer the rate follows the seller's location, not yours (R.C. 5739.033(B)(1) sources intrastate sales to where the vendor receives the order). Out-of-state sellers and online marketplaces are the exception — they source to your delivery address, so your home county rate is the one that applies there. See all 88 Ohio county rates side by side.
Anywhere in Washington County, a taxable purchase adds 1.50% in county and transit tax on top of Ohio's 5.75% state base — the 7.25% combined rate shown above. 49 of Ohio's 88 counties charge this exact rate. Cars, general merchandise, and prepared restaurant food are all taxed at 7.25%, while unprepared groceries and prescription drugs stay exempt statewide.
Ranked against the rest of the state, Washington County is the 8th-highest of Ohio's 88 counties, tied with 49 others on 7.25%. In hard numbers that matters most on big-ticket buys: a $30,000.00 car costs $2,175.00 in sales tax here. Registering the same car in Butler County (6.50%, Ohio's lowest) would cost $1,950.00 — a $225.00 difference. At the other end, Cuyahoga County (8.00%) would charge $2,400.00. Ohio taxes a vehicle at the rate of the buyer's county of residence, not the dealer's, so the county on your registration is the one that sets the bill.
Washington County is seated at Marietta, covers 635 square miles and is home to 58,389 people — the 44th-most-populous of Ohio's 88 counties, at about 92 people per square mile. 20 ZIP codes fall inside it, running from 45712 to 45789, and every one of them pays the same 7.25% — Ohio municipalities cannot levy a sales tax of their own, so there is no city surcharge anywhere in the county. Washington County also borders West Virginia, where a different state's sales tax applies entirely — Ohio's 5.75% base does not follow you across the state line, but Ohio use tax generally does when you bring the item home.
Calculate tax in Washington County
Washington County sales tax by purchase amount
| Purchase | Sales Tax (7.25%) | Total |
|---|---|---|
| $1.00 | $0.07 | $1.07 |
| $5.00 | $0.36 | $5.36 |
| $10.00 | $0.73 | $10.73 |
| $25.00 | $1.81 | $26.81 |
| $50.00 | $3.63 | $53.63 |
| $100.00 | $7.25 | $107.25 |
| $500.00 | $36.25 | $536.25 |
| $1,000.00 | $72.50 | $1,072.50 |
Groceries and prescription drugs are exempt statewide, so they carry $0 tax in Washington County. Prepared food and general merchandise are taxed at 7.25%.
Washington County sales tax FAQ
The combined sales tax rate in Washington County is 7.25% in 2026. That is Ohio's 5.75% state base plus a 1.50% county and transit portion.
At 7.25%, sales tax on a $100 taxable purchase in Washington County is $7.25, for a total of $107.25.
No. Unprepared groceries and prescription drugs are exempt from Ohio sales tax statewide, so they are not taxed in Washington County. Prepared food is taxable at 7.25%.
20 Ohio ZIP codes have Washington County as their primary county, including 45712, 45713, 45714, 45715, 45721. All of them use the 7.25% combined rate. Because ZIP boundaries can cross county lines, a delivery address near the county line should be checked against Ohio's rate-by-address lookup.
Washington County borders Athens (7.25%), Monroe (7.25%), Morgan (7.25%), Noble (7.25%), plus West Virginia. None of them charge less than Washington's 7.25%.
At 7.25%, Washington County has the 8th-highest combined sales tax rate of Ohio's 88 counties, tied with 49 other counties. Statewide, combined rates run from 6.50% to 8.00%.
Counties bordering Washington County
Washington County shares a line with 4 other Ohio counties plus West Virginia. Crossing one of these lines genuinely changes the bill — though which side counts depends on who is selling: an Ohio seller charges its own county's rate on an intrastate sale, while an out-of-state or marketplace seller charges yours.
| County | Combined rate | vs Washington | Tax on $30,000.00 |
|---|---|---|---|
| Athens County | 7.25% | same | $2,175.00 |
| Monroe County | 7.25% | same | $2,175.00 |
| Morgan County | 7.25% | same | $2,175.00 |
| Noble County | 7.25% | same | $2,175.00 |
No county bordering Washington charges less than 7.25%, so there is no cheaper neighbour to cross into.
ZIP codes in Washington County (7.25% sales tax)
20 Ohio ZIP codes have Washington County as its primary county. Every address in them pays the same 7.25% combined rate — 5.75% state plus 1.50% county and transit.
- 45712
- 45713
- 45714
- 45715
- 45721
- 45724
- 45729
- 45742
- 45744
- 45745
- 45746
- 45750
- 45767
- 45768
- 45773
- 45784
- 45786
- 45787
- 45788
- 45789
ZIP codes are a USPS delivery construct and a few straddle county lines, so a border address can fall in a different taxing county than its ZIP suggests. Check any borderline address with the ZIP code sales tax lookup or Ohio's official rate-by-address finder before you file.
Cities in Washington County
Compare Washington County rates
- Butler — 6.50%
- Cuyahoga — 8.00%
- Franklin — 8.00%
- Hamilton — 7.80%
- Lucas — 7.75%
- Montgomery — 7.50%
- Stark — 6.50%
- Summit — 6.75%
- Williams — 7.25%
- Wyandot — 7.25%
- Adams — 7.25%
- Athens — 7.25%
- Auglaize — 7.25%
- Belmont — 7.25%
- See all 88 counties →
- Browse Ohio rates by city →
Need a different calculation? Try the reverse sales tax calculator, the car sales tax calculator, the discount sales tax calculator, or the use tax calculator.
Shipping somewhere specific? Use the Ohio ZIP code sales tax lookup to confirm the rate for any ZIP code in Washington County.
Not sure what's taxable? Read what is taxable in Ohio, Ohio sales tax exemptions, or how to calculate Ohio sales tax.
Ohio's 7.25% Washington County rate is waived on qualifying items during the Ohio sales tax holiday (August 7–9, 2026) — the state's only no-sales-tax weekend.
Rate source: the 7.25% combined rate for Washington County was verified against the Ohio Department of Taxation's County Rate Table by ZIP Code on . Ohio county rates change on quarterly boundaries; for a legally definitive rate at a specific street address, use the Department's The Finder lookup — our guide to using The Finder walks through it.