Why 60% of restaurants fail — and the 6 numbers that predict it

Ask why a restaurant closed and you'll usually hear about the food, the location, or bad luck. But dig into the data and a different story emerges. The dishes were often great. The room was often full. What gave out was the math underneath — costs that crept, cash that ran thin, and decisions made without the numbers to back them.

The widely-cited figure is that roughly 60% of restaurants fail within their first year, and around 80% within five. Sobering — but failure isn't random. It's predictable, and it's preventable. Here are the six numbers that, watched closely, separate the restaurants that last from the ones that don't.

1. Food cost percentage

Food cost — what you spend on ingredients as a share of the revenue they generate — is the single most important number in the building. Healthy is usually 28–32%. The trouble is that it drifts silently: a supplier nudges prices up, a cook gets generous with portions, a popular dish was never properly costed. By the time it shows up on a monthly P&L, you've already served thousands of plates at the wrong margin.

The restaurants that survive cost every plate against live ingredient prices and watch food cost as a daily number, not a monthly surprise.

2. Prime cost (food + labor)

Add food cost and labor cost together and you get prime cost — typically 55–65% of revenue. These are the two biggest, most controllable costs in a restaurant, and they're also the two owners watch least closely in the moment. Cross 70% and most concepts can't be profitable no matter how busy they are.

If you only track one combined number, track prime cost. It's the heartbeat of the business.

3. Waste & shrinkage

Somewhere between 4% and 10% of the food a restaurant buys is never sold — it spoils in the walk-in, gets over-prepped, or quietly disappears. That's pure margin in the bin. Worse, it's usually invisible: nobody logs the tray of produce that turned, so nobody fixes the over-ordering that caused it.

• Spoilage from ordering more than you'll use before it expires.
• Over-prep when prep lists aren't tied to forecasted demand.
• Shrinkage from theft, errors and untracked comps.

Operators who log waste in real time and get expiry and par-level alerts routinely cut it by a third or more — often the difference between a profitable month and a loss.

4. Menu mix & item profitability

Not all sales are equal. Classic menu engineering sorts every dish into four buckets by popularity and profitability:

• Stars — popular and profitable. Protect and promote them.
• Plowhorses — popular but low-margin. Re-cost or gently re-price.
• Puzzles — profitable but overlooked. Reposition or describe better.
• Dogs — neither. Fix or cut them.

Most menus are quietly carrying dogs and underselling puzzles. A menu redesigned around margin — without changing a single recipe — can lift profit several points on its own.

5. Labor cost vs. sales, by daypart

Labor scheduled by habit instead of demand is one of the most common silent killers. Three people on a dead Tuesday lunch and two on a slammed Friday night both cost you — one in wasted wages, the other in lost covers and burned-out staff. The fix is tying the roster to forecasted demand and watching labor as a live percentage of sales, shift by shift.

6. Cash flow & runway

A restaurant can look profitable on paper and still fail, because profit isn't cash. Rent, payroll and vendor invoices don't arrive evenly, and a venue with no visibility into its runway can be blindsided by a single slow fortnight. The businesses that last always know two things: how much cash is on hand, and how many weeks it buys them.

How DishData changes the outcome

This is exactly the problem DishData was built for. It connects your sales, inventory, recipes, procurement, staffing and finance into one source of truth — then does the math for you:

• Every sale costs the plate and depletes inventory automatically, so food cost is a live number.
• Waste is logged in two taps, with expiry and par-level alerts before things go bad.
• Menu engineering ranks every dish, and AI insights surface the highest-impact moves each morning.
• Labor is scheduled against forecast demand and tracked as a percentage of sales.
• Finance, P&L and cash flow live in one view — no more month-end surprises.

You don't need to become an accountant to run a profitable restaurant. You just need to see the six numbers that matter, while there's still time to act on them.