Sales tax in Irion County, Texas
There is no single sales tax rate in Irion County. It runs from 6.25% to 7.25% depending on the exact address, because cities and special districts inside the county levy their own on top of the 6.25% state rate. The 6.25% state rate applies everywhere in the county; everything above that depends on where you are standing. These rates were read from Texas's own published schedule and checked on October 19, 2026. The rate in each of the 1 city is in the table below.
What is the sales tax rate in Irion County?
| Texas state rate | 6.25% |
|---|---|
| Lowest combined rate in the county | 6.25% |
| Highest combined rate in the county | 7.25% |
The combined figures are the lowest and highest totals anywhere in Irion County, so the rows above do not add up to them.
What is the sales tax rate in each city in Irion County?
Texas publishes the rate for every city it taxes. These are the combined rates, state and local together, as listed in Texas's own rate file.
| City | October 1 to December 31, 2026 |
|---|---|
| Mertzon | 7.25% |
| Unincorporated Irion County | 6.25% |
Source: Texas rate file for October 1 to December 31, 2026, from Texas's official rate page.
How much sales tax is that on a purchase in Irion County?
At 6.25%, a $100 purchase carries $6.25 in sales tax and a $1,000 purchase $62.50, at the lowest rate in the county. At the highest, 7.25%, the same purchases carry $7.25 and $72.50. That is general merchandise; Texas taxes some categories, often groceries, differently, as the note below explains.
Irion County's lowest rate is the lowest in Texas, shared with 113 other counties. See every Texas county.
Sales tax in counties next to Irion County
Irion County borders 4 counties.
| County | Combined sales tax |
|---|---|
| Schleicher County, TX | 7.25% to 8.25% |
| Reagan County, TX | 6.75% to 8.25% |
| Tom Green County, TX | 6.75% to 8.25% |
| Crockett County, TX | 6.25% |
| Irion County, TX (this county) | 6.25% to 7.25% |
Why the rate here is not the whole story
Irion County levies no sales tax of its own. Everything above the 6.25 percent state rate comes from cities, transit authorities and special purpose districts, and none of those follow the county line, so there is no single countywide rate to quote. The low end of 6.25 percent is what applies where no city and no partial special purpose district reaches; the high end of 7.25 percent is the most the Comptroller lists anywhere in the county. Texas caps the combined local share at 2 percent, so no address here exceeds 8.25 percent.
How do I find the exact rate for an address in Irion County?
Use Texas's own address lookup. In Irion County the rate depends on the address, anywhere from 6.25% to 7.25%.
Who has to collect sales tax in Irion County?
Any seller with a physical presence in Texas collects at the rate for the address of the sale; a remote seller does once it passes Texas's economic nexus threshold. Texas sales tax covers the statewide rules and what is exempt.
Work out your own numbers
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Sales tax calculator
Tax on a specific purchase at this county's rate, and the total you will actually pay.
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Do you have to collect?
Whether your sales into Texas cross its economic nexus threshold. A different question from the rate.
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Property tax in Irion County
The other local tax: effective rate and median bill for this county.
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Sales tax by county
Every US county, and how Texas compares with the rest of the country.
Sources
- Irion County rates: Texas Comptroller of Public Accounts, City Sales and Use Tax rate file (city-rates.xlsx, edition effective 2026-10-01), with the County Sales and Use Tax and Special Purpose District Sales and Use Tax lists, comptroller.texas.gov/taxes/sales/
- Collected and verified October 19, 2026. Confidence: P on the rate components, P on the range (P read on a primary agency page, S strong but indirect, U unverified).