For a Texas business with a sales tax permit, sales tax comes with its own paper trail: the permit, letters from the Texas Comptroller, certificates from some buyers, and returns. Who needs a permit, what is taxable, rates, due dates and penalties are Comptroller rules, linked under Official sources below, and this guide does not restate them. It covers the records side instead: where the Comptroller's record rules live, keeping resale certificates on file, getting into Webfile, and where to find free help.

Moreno Financial Services keeps monthly books for small businesses across Central Texas through our bookkeeping services. Plans start at $600/mo, with the exact scope confirmed before we begin.

Where the record rules live

The Comptroller's Keeping Records FAQ, linked below, sets out who has to keep sales and use tax records, what those records have to show, and for how long.

Keeping the sales records and the purchase records together in the books, with the paperwork below filed beside them, makes it possible to trace any line on a report back to where it came from.

Resale certificates are records too

Some buyers give a seller a resale or exemption certificate. The Comptroller has rules on keeping the certificates a seller accepts, on its Keeping Records and resale certificate pages, linked below.

The resale FAQ points to the Comptroller's Sales Tax Permit Search for checking that a permit is active. What a seller has to check before accepting a certificate, how blanket certificates work, and how permit numbers fit in are all on the Comptroller's resale certificate page, linked below. A simple habit is to file each accepted certificate under the customer's name, where the sales records can find it.

Getting into Webfile

The Comptroller's online filing system, Webfile, runs inside eSystems, its secure portal. To file or pay in Webfile, the Comptroller says you need a Personal Identification Code, called a Webfile number, which is printed on returns and notices the Comptroller sends in the mail.

Setting up follows the Comptroller's own steps: create an eSystems profile with a user ID, password and security questions, accept the terms of use, and verify your email. Then add access to each tax you file; the Comptroller says you only have to do this once for each tax and taxpayer. It also publishes Webfile video tutorials, including creating a profile, filing a sales tax return and making an electronic check payment, and its Webfile help line is 1-800-442-3453.

The permit, and the letter that follows

A permit can be applied for online through the Comptroller's Texas Online Sales Tax Registration Application System, or on a paper application sent by mail, and the approved permit belongs in the folder. After a permit application is approved, the Comptroller says taxpayers are notified by letter whether they will file monthly or quarterly, and that letter belongs there too. Due dates, discounts, penalties and who has to file and pay electronically are on the Comptroller's sales tax and file-and-pay pages, linked below. The rules for marketplace sellers and remote sellers have their own Comptroller pages as well.

What goes in a sales tax records folder

Paper or digital, one folder per permit keeps the trail together:

  • The permit, and the Comptroller letter that set the filing frequency
  • The Comptroller mailing that shows the Webfile number, kept somewhere secure
  • Each period's sales and purchase reports from the books
  • The confirmation for each return filed and each payment made in Webfile
  • Every resale or exemption certificate accepted, with the permit search result

Free Comptroller help

The Comptroller runs free sales and use tax seminars, currently virtual over Webex, with registration required to receive the invitation, and it says new taxpayers are especially encouraged to attend these overviews of tax responsibilities for buyers, sellers and service providers. Its Virtual Field Office lists the services available online, starting with Webfile. The Comptroller's sales tax FAQ groups its answers by topic, including Keeping Records, Resale Certificates, Obtaining a Sales Tax Permit and Sales Tax Collection, so a question on any of those has an official page to start from.

For in-person help, the Comptroller field offices closest to Bell, Coryell and Lampasas counties are Austin North, which offers walk-in taxpayer service on set weekdays and encourages calling before a visit, and Waco, where visits are by appointment only, scheduled by office staff when they decide one is needed.

How this fits with the rest of the books

Sales tax records sit inside the same monthly books as everything else. Our guide to bookkeeping for Central Texas small businesses covers the monthly close, and our small-business records checklist covers the rest of the year-end folder. If your books include sales tax records, mention it on the free 15-minute call, and we will tell you honestly whether we can help.

Official sources

Reviewed September 15, 2026. General educational information only, not individualized tax, legal, accounting, or financial advice. Rules and deadlines can change; verify the current tax year and your facts with a qualified professional.

← All tax & bookkeeping articles