What Is a Texas Taxpayer Number and Who Needs One?

A Texas taxpayer number is the 11-digit state tax ID that the Texas Comptroller of Public Accounts assigns when you register for any Texas tax account. It always starts with a 1 or a 3. You need one if your business collects Texas sales tax, owes Texas franchise tax, holds a mixed beverage permit, sells motor vehicles, or ships more than $500,000 of taxable goods or services into Texas from out of state. Applying is free, and the online application usually clears within a few business days.¹

What the Number Is

The Comptroller issues the number the first time you register for a state tax account, whether that’s a sales tax permit, a franchise tax account, a mixed beverage tax account, or something else. From then on it’s your file reference for every Texas tax obligation you have. One business, one 11-digit number, however many tax types it touches.

It is not a Federal Employer Identification Number. The EIN is a separate nine-digit number issued by the IRS for federal purposes.² In most cases you’ll want the EIN first, because the Texas application asks for it. Sole proprietors with no employees can use their Social Security Number on the sales tax permit application instead.³

You’ll also hear about a Webfile number. That’s a different code — two letters plus six digits — that the Comptroller issues alongside the taxpayer number so you can file returns and manage your account online. You need both to transact with the Comptroller, but the 11-digit taxpayer number is the one that identifies the business itself.

Who Needs a Texas Taxpayer Number

Businesses That Collect Sales Tax

If you sell, lease, or rent taxable goods, or provide taxable services, in Texas, you must hold a sales tax permit from the Comptroller, and the permit comes with a taxpayer number. The state sales tax rate is 6.25 percent, with local taxes added on top. This covers brick-and-mortar retailers, service providers, and sole proprietors who either collect sales tax or employ anyone.

Entities Subject to Franchise Tax

Texas imposes franchise tax on most organized business entities doing business in the state: corporations, LLCs (including single-member LLCs), partnerships, banks, S corporations, professional associations, and joint ventures.⁴ Each needs a taxpayer number to file its annual franchise tax report.

A sole proprietorship that hasn’t organized itself as a limited-liability entity is not a taxable entity for franchise tax.⁵ A single-member LLC that files federally as a sole proprietor, by contrast, is still a franchise-taxable entity in Texas. Forming an LLC for liability protection creates a franchise tax filing obligation, and that catches people off guard.

For reports due on or after January 1, 2026, the no-tax-due threshold is $2,650,000 in annualized total revenue.⁶ Below that, you owe no franchise tax, but you still have to file an annual Public Information Report or Ownership Information Report, and you can’t file either one without a taxpayer number.⁷

Mixed Beverage Permittees

Businesses holding a mixed beverage permit from the Texas Alcoholic Beverage Commission must collect and remit an 8.25 percent mixed beverage sales tax on every alcoholic drink they sell, prepare, or serve, along with the nonalcoholic mixers and ice sold with alcohol for on-premises consumption.⁸ That’s separate from the mixed beverage gross receipts tax, and both are filed under a taxpayer number.

Motor Vehicle Dealers

Motor vehicle sales tax is 6.25 percent of the sales price minus any trade-in allowance.⁹ Licensed dealers collect the tax at the point of sale for vehicles weighing 11,000 pounds or less and remit it through the county tax assessor-collector. Private-party buyers pay the tax themselves within 30 calendar days of purchase.¹⁰

Remote Sellers Over the $500,000 Threshold

You don’t have to be in Texas to need a Texas taxpayer number. An out-of-state business that ships taxable products or services into Texas must obtain a sales tax permit once its total Texas revenue in the preceding 12 calendar months crosses $500,000.¹¹ Marketplace sales, resale transactions, and sales of exempt products all count toward the $500,000.

Once you cross the threshold, you have until the first day of the fourth month after the month you exceeded it to register and start collecting. Hit $500,000 in March, and you need to be registered and collecting by July 1. Later than that exposes you to penalties and back-due tax.

How to Apply

Online

The fastest route is the Comptroller’s online tax registration portal at comptroller.texas.gov/taxes/permit/.³ Have ready:

Your EIN, or your Social Security Number if you’re a sole proprietor without employees.
The business’s legal name and physical address.
The type of entity.
The NAICS code for your primary activity.
The expected date of your first taxable sale.
Owner or officer information, including Social Security Numbers.
Bank account details.

There is no fee. Online applications typically process within a few business days. When the account is approved you’ll receive both the 11-digit taxpayer number and a Webfile number for online filing.

By Paper

If you can’t use the online system — for example, if an owner, partner, or officer doesn’t have a Social Security Number — submit Form AP-201, the Texas Application for a Sales and Use Tax Permit.¹² Email the completed form to sales.applications@cpa.texas.gov or fax it to 512-936-0010.³ Paper takes longer, sometimes several weeks.

Finding a Taxpayer Number You’ve Lost

If you’ve misplaced your 11-digit number, the Comptroller’s Sales Taxpayer Search tool lets you look up your account by legal name, individual name, FEI number, or business name and ZIP code.¹³ The Webfile number appears on any tax return the Comptroller has mailed you, so check recent correspondence. Still stuck? Call the Comptroller’s sales tax registration line at 800-531-5441, extension 3-0925.¹⁴

One Caution if You’re Buying an Existing Business

Registering for your own taxpayer number is only part of the picture when you acquire an existing Texas business. Under successor liability, a buyer can be held responsible for the seller’s unpaid state taxes, penalties, and interest up to the full purchase price, unless the buyer obtains a Certificate of No Tax Due from the Comptroller before closing.¹⁵ The seller and buyer jointly submit Form 86-114. There’s no charge, and the certificate typically takes about 10 business days when no audit is needed, up to 90 days if the Comptroller audits the seller’s records. Skipping that step is one of the most expensive mistakes a buyer can make in Texas.

1
Texas Comptroller of Public Accounts. Identify Taxpayer
2
Internal Revenue Service. Employer Identification Number
3
Texas Comptroller of Public Accounts. Texas Online Tax Registration Application
4
Texas Comptroller of Public Accounts. Franchise Tax Overview
5
Texas Comptroller of Public Accounts. Taxable Entities – Franchise Tax Frequently Asked Questions
6
Texas Comptroller of Public Accounts. Franchise Tax Rates, Thresholds and Deduction Limits
7
Texas Comptroller of Public Accounts. Requirements for Reporting and Paying Franchise Tax
8
Texas Comptroller of Public Accounts. Mixed Beverage Sales Tax
9
Texas Comptroller of Public Accounts. Motor Vehicle Sales and Use Tax
10
Texas Comptroller of Public Accounts. Motor Vehicle Tax Guide
11
Texas Comptroller of Public Accounts. Remote Sellers
12
Texas Comptroller of Public Accounts. Texas Sales and Use Tax Forms
13
Texas Comptroller of Public Accounts. Sales Taxpayer Search
14
Texas Comptroller of Public Accounts. Contact Information
15
Texas Comptroller of Public Accounts. Buying an Existing Business