If a business stops keeping copies of individual invoices (relying instead on a purchase card and a monthly summary sales tax report generated by software), is that summary report enough to satisfy Texas's sales tax recordkeeping requirements for an audit?

Plain-English summary

A business that made operations purchases using a purchase card asked whether it could stop keeping copies of individual invoices — the IRS had told the business this wasn't necessary — and instead rely on a detailed monthly sales tax report generated by "Smart Data" software, submitted with its closing documents. It asked whether that report would satisfy Texas's sales tax audit requirements.

The Comptroller reviewed the actual report and found it insufficient. It was missing:

• A description of the item purchased
• The total tax rate applied
• The state for which tax was collected
• The specific local taxing jurisdictions to which local tax was allocated
• The amount on which tax was assessed

The item description was flagged as especially important: without it, an auditor generally can't determine whether the correct tax was charged or accrued, particularly when local tax rates vary or a single invoice mixes taxable and nontaxable items. And just as with paper invoices, if an item description is missing and the auditor can't otherwise determine what was purchased, the burden of proof shifts to the purchaser and/or vendor to show the item wasn't taxable. The Comptroller pointed the taxpayer to Rules 3.281 (Records Required; Information Required) and 3.282 (Auditing Taxpayer Records) for the full documentation standard.

What this means for you

Businesses using purchase cards or automated expense/tax-reporting software

An IRS-compliant recordkeeping approach is not automatically Texas-sales-tax-compliant. If your summary reports don't itemize what was purchased, the applicable tax rate, and the local jurisdiction the tax was allocated to, you risk failing a Texas sales tax audit even if your federal income tax recordkeeping is fine. Confirm your software or process captures item-level detail, not just aggregate tax totals.

Accountants and tax professionals advising on recordkeeping systems

When evaluating a client's purchase-card or e-procurement reporting tool for state sales tax compliance, check it against Rules 3.281 and 3.282's requirements specifically — item description, tax rate, taxing jurisdiction, and taxable amount are the concrete gaps the Comptroller flagged here, and the consequence of a gap (shifted burden of proof) can be costly in an audit.

Software vendors building expense/tax-reporting tools for Texas businesses

This letter is a useful checklist of what a Texas-sufficient sales tax report needs to include at the line-item level, distinct from what other purposes (like an IRS submission) might require.

Common questions

Q: Can a business rely on a summary monthly sales tax report instead of keeping individual invoices?
A: Not if the summary report is missing key details. In this letter, a report lacking item descriptions, tax rate, taxing jurisdiction, and taxable amount was found insufficient for Texas sales tax audit purposes.

Q: Why does the item description matter so much?
A: Without it, an auditor can't confirm whether the correct tax was charged or accrued — especially when local rates vary or an invoice mixes taxable and nontaxable items.

Q: What happens if my records don't include enough detail and an auditor can't determine what was purchased?
A: The burden of proof shifts to the purchaser and/or the vendor to show the item wasn't taxable.

Citations and references

Statutes and rules:

• 34 Tex. Admin. Code Rule 3.281 (Records Required; Information Required)
• 34 Tex. Admin. Code Rule 3.282 (Auditing Taxpayer Records)

Source

• STAR search: https://star.comptroller.texas.gov/search?doc_type_code=L&tax_type_code=SST
• Opinion: https://star.comptroller.texas.gov/view/200007522L

Original ruling text

July 25, 2000

Dear ***:

Thank you for your letter regarding the use of a purchase card for your
operations expenses. You fact situation and question are restated below:

IRS has advised you that it is not necessary to keep copies of your invoices.
You are using Smart Data software and create a detailed sales tax report each
month to include with your closing documents. You asked if this sales tax
report is acceptable to the state of Texas for sales tax audit purposes.

Response: I have reviewed the detailed sales tax report generated using the
Smart Data software. The report is lacking in the following areas: The tax
report does not describe the item purchased, the total tax rate, the state for
which tax is collected, nor does it identify the local taxing jurisdictions to
which local tax is allocated. Additionally, the report does not reflect the
amount on which tax is assessed. While it may be possible for an auditor to
back in to the taxable amount, i.e., when the tax rate is the maximum 8.25%, it
is much more difficult when you have varying local rates involved or have both
taxable and nontaxable items on a single invoice.

Just as with traditional paper invoices, of major importance to our auditors is
the item description of items sold. Lacking an item description makes it
difficult for our auditors to ascertain if the proper tax has been charged or
accrued. Therefore, it is imperative that the vendor completes this
information for each different item sold. Just as with traditional paper
invoices, if an item description is omitted and cannot be ascertained by the
auditor, the burden of proof will fall on the purchaser and/or vendor to show
that the item is not taxable.

You may also wish to review the following sales tax rules: 3.281, Records
Required; Information Required and 3.282, Auditing Taxpayer Records.

A complete set of rules, along with the text of the Tax Code, and a wealth of
other information are available through our website at
through the "Texas Taxes" window.

This opinion is based on the facts presented. Other facts though similar may
provide a different result.

I hope this information answers your questions. If you need additional
information, please call me toll-free at 1-800-531-5441, extension 3-4502. The
direct line is 512/463-4502. You may also write to Tax Policy Division,
Comptroller of Public Accounts.

Sincerely,

Gilbert Zamora
Tax Policy Division