Dimmitt, Texas sales tax rate: 8.25%
Last updated Checked monthly
The sales tax rate in Dimmitt, Texas is 8.25%. That’s the 6.25% state rate plus 2% in local taxes. It’s the highest combined rate Texas allows, and 361 other cities pay the same.
Calculated by the 
Sales Tax APIThe same engine Zamp customers use.Dimmitt combined rate
8.25%
- Texas state
- 6.25%
- Castro CountyCounty
- 0.5%
- DimmittCity
- 1.5%
Dimmitt sales tax calculator
Enter a price and what you’re selling.
- TexasState · 6.25%$6.25
- Castro CountyCounty · 0.5%$0.50
- Dimmitt City (Castro County)City · 1.5%$1.50
Charging this at checkout? Zamp calculates it on every order and files the returns.
Book a demoDimmitt sales tax rate breakdown
State, county and city taxes add up to 8.25%.
| Jurisdiction | Type | Rate |
|---|---|---|
| State of Texas | State | 6.25% |
| Castro County | County | 0.5% |
| Dimmitt City (Castro County) | City | 1.5% |
| Combined rate | 8.25% |
Rate history
- July 20238.25%
- July 20248.25%
- July 20258.25%
- July 20268.25%
- Today8.25%
No change since July 2023.
Charge the right rate in Dimmitt, on every order.
Zamp calculates tax at each customer’s address, then files and pays every Texas return for you, with a sales tax team you can call.
Dimmitt sales tax questions.
Still have questions? Call us at 1-866-438-9267 or email us at support@zamp.com.
What is the sales tax rate in Dimmitt, Texas?
The combined sales tax rate in Dimmitt is 8.25% as of November 2, 2026. It’s made up of 6.25% Texas state tax, 0.5% Castro County, 1.5% Dimmitt City (Castro County).
Does the sales tax rate vary within Dimmitt?
Dimmitt has no special-district taxes, so most addresses in the city pay the same 8.25%: Texas’s 6.25% plus 0.5% county tax plus 1.5% city tax. This rate was calculated for the centre of Dimmitt; the calculator prices any exact address.
Is SaaS taxable in Dimmitt?
Partly. Texas taxes 80% of the price of software as a service, so the effective rate in Dimmitt is 6.6%.
Do online sellers have to collect sales tax in Dimmitt?
Yes, if they have nexus in Texas: more than $500,000 in Texas sales in the previous or current calendar year, or a physical presence in the state. They register with the Texas Comptroller of Public Accounts and charge the rate at the buyer’s address.
Sources. Texas Comptroller of Public Accounts · Zamp Sales Tax API, for the centre of Dimmitt. Rates are checked monthly and are for information, not tax advice.
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