RT vs. XT Webfile Numbers: A Simple Texas Filing Guide

The quickest way to understand the difference is this: RT Webfile numbers are used for Texas sales tax filing, while XT Webfile numbers are used for Texas franchise tax filing. Each number links your business to a different tax account with the Texas Comptroller, which means using the wrong one can lead to login errors, rejected filings, or missed deadlines. Knowing which number applies to which filing helps you stay compliant and avoid unnecessary frustration.

At Pangea Tax, LLC, a Dallas–Fort Worth boutique accounting and tax education firm, we regularly help small business owners understand these identifiers and keep their Texas sales tax and franchise tax filings on track. Let’s break down how each number works in simple, everyday language.

What’s the Difference Between RT and XT Webfile Numbers?

When the Texas Comptroller sets up your business accounts, they assign separate Webfile numbers depending on what type of tax you are responsible for. These numbers are not interchangeable.

• RT Webfile Number — Used for Texas sales tax filing and other transaction-based taxes.
• XT Webfile Number — Used for Texas franchise tax filing(the annual requirement for LLCs, corporations, and other taxable entities).

If your business deals with both sales tax and franchise tax (most LLCs do), you will have both numbers.

When Do You Need an RT Webfile Number?

You need an RT number if your business is required to collect or report Texas sales tax. The Comptroller issues this number when your Sales and Use Tax Permit is approved.

You’ll use your RT number when filing:

• Monthly, quarterly, or annual Texas sales tax returns
• Sales tax prepayments
• Use tax filings

If you’re unsure about your sales tax requirements, visit our Texas Sales Tax Filing page or explore the Texas Sales Tax Guide.

When Do You Need an XT Webfile Number?

XT numbers are assigned to Texas taxable entities—LLCs, corporations, PLLCs, and certain partnerships—to file their annual franchise tax and Public Information Report (PIR).

You’ll use your XT number when filing:

• Texas Franchise Tax Report
• No Tax Due Report
• Public Information Report (PIR)

Even if you owe $0, Texas requires the filing each year. For business owners across Dallas, Fort Worth, Arlington, Southlake, Grapevine, Plano, and Las Colinas, this is a major annual compliance step. Learn more at our Texas Franchise Tax Filing page or check the Texas Franchise Tax Guide.

Common Mistakes Business Owners Make

Because RT and XT numbers look similar, many Texas business owners mix them up. At Pangea Tax, LLC, we see several recurring issues:

• Using the RT number for franchise tax(won’t work—system won’t recognize it).
• Using the XT number for sales tax(also won’t work).
• Assuming one number handles all filings —Texas assigns multiple identifiers.
• Losing state letters —RT and XT numbers are mailed in separate notices.
• Not realizing filing is required even if no tax is due(especially for franchise tax).

These mistakes are common, but easy to fix once you know what to look for.

Examples: When You Need RT vs. XT

Example 1: You run a beauty studio selling retail products

• RT number — to file sales tax on product sales
• XT number — to file your LLC’s franchise tax

Example 2: You’re a dentist or surgeon with retail items

• RT number — to file sales tax on dental products
• XT number — to file the annual franchise tax

Example 3: You own an online shop in Fort Worth

• RT number — for sales tax on online sales
• XT number — for your LLC’s annual filing

Example 4: You’re a consultant with no retail sales

• XT number — you still must file franchise tax

What If You Can’t Find Your RT or XT Number?

You’re not the only one—thousands of business owners misplace these letters every year. Here’s where to look:

How to find your RT Webfile number

• Original Sales Tax Permit approval letter
• Previously filed sales tax returns
• Emails or correspondence from the Texas Comptroller

How to find your XT Webfile number

• Your annual franchise tax reminder notice
• Prior franchise tax filings
• Documents from your registered agent or formation provider
• A Webfile access request through the Comptroller’s website

If your business is new, you may not receive your XT number immediately—processing can take time.

FAQ

Are RT and XT numbers the same?

No. RT is for sales tax; XT is for franchise tax.

Do all LLCs need an XT number?

Yes. Unless your entity is legally exempt, all LLCs must file franchise tax annually.

Can I file sales tax using my XT number?

No. The system will not recognize the account.

Can Pangea Tax, LLC help me recover a missing Webfile number?

Absolutely. We help Dallas–Fort Worth business owners retrieve lost RT and XT numbers and get their filings back on track.

If you're stuck or confused about Texas sales tax or franchise tax filings, contact Pangea Tax, LLC for fast, expert help getting unstuck.