Sales Tax Audit Notice: A 10-Step First-Week Checklist

A sales-tax audit notice starts a document and deadline problem before it becomes a tax calculation problem. During the first week, preserve records, identify the audit period and response date, appoint one contact person, and reconcile what was reported to the company’s books.

1. Read the entire notice

Identify the auditing agency, tax type, legal entity, locations, audit period, response deadline, auditor contact information, and initial document request. Do not assume every affiliated company or state is included.

2. Preserve the full audit-period records

Stop routine destruction of invoices, exemption certificates, point-of-sale exports, general ledgers, bank records, contracts, and tax workpapers for the audit period. Preserve data in its original format and make working copies.

3. Name one audit contact

Route communications through one person who understands the records and can track requests, deadlines, and productions. Employees should know where to send auditor questions instead of answering informally from memory.

4. Build a deadline calendar

Record production dates, scheduled conferences, proposed sampling milestones, statute-extension requests, preliminary findings, protest deadlines, and payment dates. State procedures vary, so use the notice and the agency’s current instructions.

5. Reconcile returns to the books

Compare reported gross sales, taxable sales, tax collected, and taxable purchases with the general ledger, sales journals, point-of-sale data, bank deposits, and financial statements. Explain timing differences and entity or location differences before the auditor identifies them.

6. Review exempt sales

Match claimed exempt or resale transactions to valid certificates and customer records. Create an exception list for missing, incomplete, expired, or mismatched documentation. States differ on whether missing certificates can be cured during an audit.

7. Review purchases and use tax

Audits often examine untaxed purchases as well as sales. Test fixed assets, supplies, software, services, promotional items, freight, and intercompany charges for accrued use tax and possible exemptions.

8. Understand the proposed sampling method

Ask how the population will be defined, which periods or transactions will be sampled, how credits will be handled, and how errors will be projected. Preserve the data needed to reproduce the sample.

9. Control document production

Keep a copy of every file produced and a log showing the request, response date, date range, entity, and explanation. Review exports for scope, completeness, duplicates, hidden columns, and confidential information before production.

10. Estimate exposure and defenses

Quantify potential tax, interest, and penalties by issue. Separate documentation problems from taxability problems and identify available credits, overpayments, exemption arguments, sourcing positions, and penalty-relief facts.

What not to do

• Do not ignore the deadline or produce records without reviewing them.
• Do not change original data or create unsupported documents.
• Do not agree to a sample before understanding the population and projection.
• Do not overlook overpayments and offsetting credits.
• Do not let multiple employees give inconsistent explanations.

Prepare an audit-control file

Keep the notice, powers of attorney, request log, production log, reconciliations, sample documents, issue summaries, correspondence, and deadline calendar together. A clean audit trail helps the business answer questions consistently and prepare for a protest if needed.

Official reference points

• California Department of Tax and Fee Administration audit publication
• Texas Comptroller recordkeeping guidance

Sales-tax audit procedures differ by state and locality. This article provides general information.