Every restaurant operator knows sales tax is a problem. Most have quietly decided to deal with it another day. The POS is configured, the returns are filed (and hopefully paid), and sales tax feels handled. But by the time an operator knows they have an issue, the state usually knows first. With 1099-Ks and platform data, the audit starts with a number, not a question.
Unlike many other industries, restaurants operate with a combination of high transaction volume, complex taxability rules, and evolving sales channels. These factors create an environment where small errors accumulate quietly, and by the time they surface in an audit, the exposure can be significant.
Restaurant sales tax looks simple from the outside, but it can be deceptively complex. A prepared food item may be taxable in one jurisdiction and exempt in another. Temperature, packaging, and method of sale can all affect taxability within the same state. Even common items such as bakery products may be treated differently depending on how they are sold. For full-service operators, a single menu can contain dozens of taxability decisions, and default POS configurations almost never reflect those distinctions accurately.
A few areas come up in nearly every restaurant audit:
Service charges and gratuities remain one of the most common issues. Mandatory service charges, including automatic gratuities, banquet fees, and catering service charges, are generally treated as taxable in most states. Voluntary tips are not. When systems apply the same treatment to both, the result is uncollected tax that lands squarely on the restaurant, with interest and penalties attached.
Third-party delivery has added another layer of complexity. Marketplace facilitator laws have shifted collection responsibility in many states, but not uniformly. In some jurisdictions, the platform collects and remits tax. In others, the restaurant remains responsible for certain components of the transaction. Delivery fees, service fees, and discounts are not always treated consistently. Operators frequently assume the platform is handling everything, an assumption that often turns out to be wrong, resulting in either double remittance or a growing gap in liability.
Use tax is another recurring issue that often goes unnoticed. Employee meals, complimentary items, and out-of-state purchases of equipment and supplies where no tax was paid at the point of sale can all create exposure. Because use tax is self-assessed, it rarely appears in internal reporting, which is exactly why it becomes a focus during audits.
What has shifted most in recent years is enforcement. States now have access to third-party data that allows them to verify sales before an audit even begins. Payment processors and platforms issue Form 1099-K, reporting gross receipts directly to tax authorities. In many cases, simply comparing that data to filed sales tax returns allows a state to identify discrepancies before an audit formally begins. Restaurants are a natural target because high transaction volume, multiple revenue streams, and consistent third-party reporting make them efficient to audit and likely to produce assessments.
When reported sales do not align with filed returns, the audit starts with a defined number, and the burden falls on the operator to explain it.
Tax collected but not remitted is another issue that surfaces regularly, whether as a systems problem or a cash flow decision that was intended to be temporary. Restaurants collect sales tax in real time, but those funds are not always segregated. During periods of tight cash flow, it is not uncommon for collected tax to be used to cover payroll, vendors, or other expenses, with the expectation that it will be reconciled later. By the time the filing deadline arrives, the funds are often gone.
From the state’s perspective, this is one of the most serious issues encountered in an audit. If tax was collected from customers, it is expected to be remitted in full. Any shortfall is treated as a direct liability with penalties, and in serious cases it can escalate to personal or even criminal exposure for the individuals involved.
When problems are identified, timing matters. There are structured ways to correct prior reporting and reduce exposure before an audit begins, but that window closes once the state initiates contact. Operators who address these issues proactively are in a meaningfully stronger position than those who wait.
For operators expanding into new markets or managing multiple locations, the exposure compounds quickly. Growth without a corresponding review of tax obligations is one of the more predictable ways a restaurant group ends up facing a multi-year audit across several jurisdictions at once.
Sales tax is manageable, but it cannot be set and forgotten. States continue to expand enforcement and sharpen how they use data, and operators who manage this well treat sales tax the way they treat food cost or labor, such as an ongoing discipline, not a one-time setup. Those who validate how revenue streams are taxed, reconcile third-party activity, and confirm that collected tax matches what is reported are in a far stronger position when the state comes calling. The financial consequences of getting it wrong are just as real.
Gerald J. Donnini II is a sales tax attorney, shareholder at Moffa, Sutton & Donnini, P.A., and founder of Sales Tax Helper, a national firm built around one focus: sales and use tax. With more than a decade of experience representing businesses in audits, appeals, and multi-state compliance matters, he has worked with clients ranging from independent operators to publicly traded companies.
