Similar to other companies, we have recently been frequently subjected to sales and use tax audits. When auditors arrive, they typically proactively request that the company sign a waiver agreement to extend the audit scope to an additional tax year. To date, I have consistently refused to sign such waivers. I believe that if the audit is delayed for legitimate reasons, signing a waiver is acceptable; however, it seems unusual for auditors to request an extension of the audit year immediately upon arrival. Has anyone else encountered a similar situation? How did you handle it?

In practice, the initiation of a sales and use tax audit often comes with the need to review multiple years. Audit agencies may, based on risk assessment or random sampling, wish to cover a longer period at once to improve efficiency. However, for taxpayers, signing a waiver means voluntarily giving up protection under the statutory audit limitation period, potentially increasing compliance burdens and the risk of adjustments.

From a legal perspective, states typically have clear limits on the lookback period for sales and use tax audits (for example, generally three to four years). Auditors requesting a waiver may be attempting to exceed this limit or to reserve more time for subsequent investigations. Taxpayers have the right to refuse, but must weigh the pros and cons: refusal may lead auditors to conduct the audit based on existing statutory authority or to impose stricter review requirements in subsequent procedures.

To address this dilemma, some companies choose to clearly state their position early in the audit, agreeing only to cooperate within reasonable limits, and documenting all waiver requests and reasons in writing. Others communicate with the auditors through professional tax advisors, seeking to limit the waiver conditions to specific matters or identified issues, rather than unconditionally expanding the years covered.

We welcome readers to share similar experiences, including whether they refused the waiver, the final outcome, and whether there are other effective strategies. Your feedback will help peers better address such audit challenges.