California’s 80/80 Rule: Thresholds, Elections, and Penalties

California’s 80/80 rule turns normally tax-free cold to-go food into taxable food at any business where more than 80% of gross receipts come from food products and more than 80% of those food sales are already taxable. If your restaurant, café, or deli clears both numbers, cold sandwiches, salads, and pastries sold to-go stop being exempt. The rule is written into California Code of Regulations, Title 18, Section 1603(c)(3), and it catches more operators than most expect — fast-food restaurants almost always, plenty of full-service restaurants, and a fair number of cafés and delis whose owners assumed their takeout cold items were tax-free.

The Two Thresholds

Both tests have to be true at the same time. If you clear one and not the other, the rule doesn’t apply.

First: more than 80% of your gross receipts come from selling food products.
Second: more than 80% of those food product sales are taxable — food served for on-site consumption, hot prepared food, or food sold at a drive-in.

“Food products” is a defined term with a quirk. Bread, produce, meat, dairy, coffee, juice, and bottled water all count. Alcoholic beverages and carbonated drinks do not count as food products for this calculation, even though they’re taxable on their own.¹ That matters both ways: a bar with heavy alcohol sales may fall under 80% on the first test and escape the rule entirely, while a juice bar with almost nothing but food sales will clear it easily.

The CDTFA tests each location on its own numbers. If you own three restaurants, each one passes or fails the thresholds separately rather than on a combined total. When two food operations share a building but customers can’t move freely between them — separate rooms, separate entrances, a shared kitchen — each operation is also tested on its own.¹

A sandwich shop where 85% of orders are eaten at the counter will almost certainly meet both thresholds. A grocery store with a small deli counter almost certainly won’t, because its receipts spread across non-food merchandise and most of its food sales are cold items taken home.²

What Changes When You’re In

Outside the 80/80 rule, cold food sold to-go in California is tax-exempt. A cold sandwich or a boxed salad taken out the door carries no sales tax. Once you’re inside the rule, that exemption disappears for your business. Cold sandwiches, salads, pastries, and similar cold items sold to-go are taxable by default, the same as your dine-in food.²

Carbonated beverages are always taxable regardless of the 80/80 rule, dine-in or to-go.¹ Hot prepared food is always taxable too. What the 80/80 rule actually controls is the one category operators tend to assume is safe: cold food handed to a customer who’s leaving. The CDTFA assumes every sale is taxable unless your records prove otherwise, so the risk isn’t a judgment call at audit — it’s the default running against you.

The Separate Accounting Election

If your business triggers the rule but you still want to sell cold to-go food without charging tax on it, California offers a way out: the separate accounting election under Revenue and Taxation Code Section 6359(f).³ Under the election, cold to-go food stays nontaxable — but only if your records can prove, transaction by transaction, which sales qualify.

In practice that means your point-of-sale system has to distinguish cold to-go sales from dine-in orders, hot to-go orders, and everything else, and keep those categories separated on your returns. The election holds as long as your records hold. If an audit shows you weren’t really tracking cold to-go separately, the CDTFA revokes the election and every cold to-go sale snaps back to taxable, potentially for the full audit period.¹

Whether the election is worth it comes down to volume. If cold to-go is 5% of your sales, the bookkeeping probably costs more than the tax you’d avoid charging. If it’s 30% of a deli’s revenue, the election is close to mandatory.

Testing Your Business and Keeping the Records

California requires sales tax records to be kept for at least four years. If your POS overwrites data before then, you have to move it somewhere accessible.⁴

For 80/80 purposes your records need to answer two questions on demand: what share of gross receipts came from food products, and what share of food sales were taxable. That requires your POS to tag every transaction by type — hot food, cold food, carbonated vs. non-carbonated beverages, non-food merchandise, dine-in vs. to-go. If you’ve made the separate accounting election, the cold to-go sales have to be isolated clearly enough to survive a formal audit.

Publication 22 includes a worksheet for running the 80/80 calculation. Running it quarterly, even though no rule says you have to, is the cheapest way to catch a shift in your sales mix before it turns into a multi-year problem.² A restaurant that adds a popular lunch counter, drops its beer and wine program, or expands drive-thru hours can cross the thresholds without anyone in the business noticing.

What a Miss Costs

A CDTFA audit normally covers three years, but the lookback can run to eight years or longer when underreporting is substantial.⁵ If you should have been charging tax under the 80/80 rule and weren’t, the penalties stack:

Late payment penalty: 10% of the unpaid tax.
Late filing penalty: 10% of the taxes due on any return filed after the deadline, with the combined penalty on a single return capped at 10%.
Negligence penalty: an additional 10% if the underpayment came from carelessness or intentional disregard of the law.
Fraud penalty: 25% of the deficiency if the CDTFA finds the underpayment was intentional.⁶

Interest runs on top of the tax. For 2026, the CDTFA charges 10% annual interest on deficiencies, calculated monthly.⁷

The real exposure isn’t one missed quarter. It’s operating for years on a wrong assumption. A café that never realized it crossed both thresholds can be looking at three years of back tax on every cold to-go sale, plus penalties, plus interest on the full amount. Classifying your business correctly now, and rechecking the numbers whenever your menu or sales mix moves, is what keeps that bill from arriving.

1
California Department of Tax and Fee Administration. California Code of Regulations Title 18 Section 1603 – Taxable Sales of Food Products
2
California Department of Tax and Fee Administration. Publication 22 – Dining and Beverage Industry
3
California Legislative Information. California Revenue and Taxation Code 6359 – Food Products
4
California Department of Tax and Fee Administration. California Code of Regulations Title 18 Section 1698 – Records
5
California Department of Tax and Fee Administration. Audit Manual Chapter 4 – General Audit Procedures
6
California Department of Tax and Fee Administration. California Revenue and Taxation Code 6591 – Penalties
7
California Department of Tax and Fee Administration. Interest Rates