Sales Tax in 2026: What Restaurant Operators Need to Find, Fix, and Defend

The restaurant operators I worry about most are the ones who built their businesses the hard way, whether they run a single neighborhood spot or a dozen locations grown one at a time. They know every vendor, every shift lead, and most of their regulars by name. They worry about payroll on Friday, the walk-in cooler that keeps icing over, a robbery at the back register last month, and the regulations from the state capital nobody has time to read.

Sales tax sits behind all of those fires. It is technically handled, because returns are being filed and the POS is running, but it is rarely examined. The system set up two locations ago has not been revisited the delivery deal from last year was never mapped to state tax law; the register cash has never been reconciled against what processors report to the state.

Sales tax is the issue restaurant operators avoid, and 2026 is the wrong year to keep avoiding it.

The framework I use is straightforward. Find it. Fix it. Defend it. Find your exposure before the state does, fix what can be fixed in the window before a notice arrives, and defend the rest with clean records and a clear story. Skipping the first step is what makes the third step expensive.

Find It: The State Already Has a Number

The most consequential change in restaurant sales tax is how states open audits. Form 1099-K, filed by payment processors and online platforms, reports gross receipts directly to tax authorities, independent of anything restaurants file. That single data set lets a state compare what a credit card processor or delivery platform reported as the restaurant's gross sales against what the restaurant reported on its sales tax return. Material differences open audits.

There are several things with the 1099-K that operators routinely miss, and they all work against restaurants in a reconciliation. The number on a 1099-K is gross processed dollars, not taxable sales. It can include tips charged on the credit card and routed through the same processor, sales tax charged at the register and processed alongside the sale, and refunds before they are netted out. None of those are taxable revenue, but all of them show up in the gross. The 1099-K is also incomplete: very few restaurants run 100 percent of their sales on cards, and anything that came in as cash is not on the 1099-K at all. Reported gross sales on the return should be at least the sum of every 1099-K plus all cash sales, with adjustments out for the items inside the 1099-K that are not part of the taxable base. Operators who reconcile to the 1099-K alone almost always end up explaining a number that should not have been the starting point.

Where the Exposure Hides: Delivery Platforms

Of the channels generating reconciliation problems, third-party delivery produces the most consistent surprises. Uber Eats, DoorDash, and Grubhub have all been operating under marketplace facilitator laws in most states for several years. Those laws shift sales tax collection responsibility from the restaurant to the platform, but the shift is rarely complete and rarely the same across states.

Marketplace facilitator status generally only covers transactions the platform actually facilitates and processes. When a restaurant uses a delivery platform's logistics layer but processes the order through its own website or app, the rules may not apply, and restaurants remain responsible for collection. Components are not treated uniformly either. Delivery fees, service fees, small order fees, and processing surcharges may or may not be subject to sales tax depending on the state, and the platform's treatment may differ from what state law requires.

What the platforms report back to the restaurant often does not map cleanly to a sales tax return. Restaurants frequently see a single net deposit and a monthly statement and assume the tax piece is handled. Sometimes it is. Sometimes the platform has remitted on part of the transaction and the restaurant remains responsible for the rest. Sometimes the restaurant is double paying, having configured its POS to collect tax on transactions where the platform is also collecting and remitting.

The Other Recurring Issues

A few other areas surface in nearly every restaurant audit. Mandatory service charges (automatic gratuities, banquet fees, catering charges) are generally taxable in most states. Voluntary tips are not. POS systems frequently treat both the same, producing uncollected tax on the mandatory side. Use tax obligations on employee meals, complimentary items, and equipment purchased from out of state where no sales tax was charged rarely show up in internal reporting, which is exactly why auditors look for them. Tax that has been collected from customers but not remitted to the state, sometimes a systems issue and sometimes a cash flow decision intended to be temporary, is the most serious finding of all. Any shortfall becomes a direct liability with penalties, and in serious cases can reach personal or even criminal exposure.

A New Variable: The End of the Penny

The U.S. Treasury has confirmed it is winding down penny production, with supply expected to thin out through 2026 and beyond. Pennies remain legal tender, but as supplies dwindle, cash transactions will increasingly need to be rounded to the nearest five cents. Noncash payments will continue to settle to the exact cent. That sounds like a coin question. For restaurants, it is a sales tax question.

The Treasury has said it will be up to state and local governments to set the rules under a rounded cash regime. Recent guidance from the National Conference of State Legislatures recommends symmetrical rounding, with totals ending in 1, 2, 6, or 7 cents rounding down and totals ending in 3, 4, 8, or 9 cents rounding up, but that guidance is nonbinding and individual states will set their own rules. The compliance issue is straightforward. The rounded amount is what customers pay in cash, but the statutory tax obligation does not round. Collecting less than the statutory amount eats into margin. Collecting more than the statutory amount, without properly remitting the excess, creates its own exposure, because most states require any amount collected as tax to be remitted in full. The same $9.83 ticket may settle at $9.85 in cash and $9.83 on a card, and concepts taking both need their POS and reporting to handle that split cleanly.

Fix It: The Window Before a Notice

When exposure is identified, timing matters more than almost anything else. There are structured ways to correct prior reporting before an audit begins, including voluntary disclosure programs that most states offer, with material reductions in penalties and limited lookback periods. That window closes once the state initiates contact. Operators who identify their own exposures and resolve them on their own terms routinely pay a fraction of what they would have paid if the state had identified the same exposures first. For restaurants with multiple locations, the practical question is not whether some exposure exists, it is who finds it first.

Defend It: Clean Records, Clear Story

The defensive posture has three pieces. The first is a clean reconciliation tying gross sales to all processor and platform reports plus cash, with documented adjustments for nontaxable amounts. The second is a documented mapping of how each delivery platform is being treated in each state, updated as platform reporting and state law change. The third is a written rounding policy for cash transactions, applied consistently across locations and shifts. None of this is glamorous work, but every operator who has been through a sales tax audit will tell you the difference between an exposure that is manageable and one that is existential usually comes down to whether records were maintained on the front end.

What Is Actually at Stake

The bills that come out of restaurant sales tax audits do not look like other bills. They are not negotiated against profit the way a vendor dispute is. They are not amortized against future earnings the way a renovation is. They are calculated against years of past sales, with interest and penalties stacked on top, owed to a state that does not particularly care about thin margins or rules the operator did not realize had changed. For an operator who has built a business carefully over decades, the wrong audit can take more than the audit period paid out in profit.

Operators who treat sales tax as something that requires periodic attention, the way they treat food cost or labor, are in a meaningfully stronger position. Operators who keep avoiding it, on the assumption that the POS is handling it and the returns are being filed, will eventually find out otherwise. The choice is whether they find out on their own terms, with time to fix what can be fixed, or on the state's terms after the window has closed.

Find it. Fix it. Defend it. The order matters.