California sales tax on food is a grid, not a rule. Whether a sale is taxable depends on what the item is (hot or cold), where it’s eaten (on premises or to go), and — for cold to-go food — on a test most owners have never heard of called the 80/80 rule. Get the grid wrong in your POS and the error repeats on every ticket, every day, until a CDTFA audit finds it for you.
The grid, simplified
- Anything consumed on your premises — taxable. Hot, cold, doesn’t matter. Tables, counter seating, even a shared food-court area count as premises.
- Hot prepared food — taxable, dine-in or to-go. A burrito is taxable in the bag. (Hot beverages like coffee, sold alone to-go, are the odd exemption out.)
- Cold food sold to-go — generally not taxable… unless the 80/80 rule pulls it back in.
The 80/80 rule
If more than 80% of your gross receipts come from selling food, and more than 80% of those food sales are taxable (hot food or food consumed on premises), then your cold to-go items — the sandwich, the packaged salad, the cold-case drink — become taxable too.
There’s an escape hatch: you can elect to separately account for cold to-go items and keep them exempt. The election is only as good as your records — it requires your POS to genuinely track those sales as a distinct category, not a cashier’s judgment call at the register.
Where this goes wrong in practice
Three patterns we see in audits: POS items never mapped to the right tax category when the menu changed; “to-go” buttons used for dine-in orders because the line was long; and combination sales (a hot entrée bundled with a cold side for one price) rung up as exempt when bundles that include hot food are taxable. None of these feel like errors day-to-day. All of them compound.
A CDTFA audit reconstructs three years of sales. If your POS has been mistaxing a category, the assessment lands all at once — tax you never collected, plus interest, out of your pocket. An hour spent validating POS tax mapping is the cheapest insurance in the industry.
Action items
- Run the 80/80 math on your own numbers — most restaurants meet both prongs
- If you want cold to-go exempt, make the separate-accounting election and set up POS categories to match
- Audit your POS tax mapping every time the menu changes
- Train staff: dine-in vs. to-go buttons change tax, not just the receipt
- Keep exemption documentation — in an audit, undocumented means taxable
This article is general information, not tax advice for your specific situation. Rules change and details matter — talk to a CPA (we know one) before acting on anything here.