How to Calculate Restaurant Break-Even Point (Formula & Examples)

I've seen cafes doing $32,000 a month in revenue where the owner thought they were profitable because there was money in the bank at the end of each month. What they didn't know: their break-even point was $34,700. They'd been losing $2,700 a month for 8 months. The cash in the bank was their initial investment, slowly draining.

Break-even analysis is the most basic financial math in business. Most restaurant owners never do it. They judge their performance by their bank balance. That works until it doesn't.

Industry Data & Sources:

The National Restaurant Association's 2026 State of the Industry report provides benchmark data on restaurant costs and profitability.

RestaurantOwner.com surveys show that top-performing restaurants maintain prime costs between 55-60%.

The Break-Even Formula

The break-even point is the revenue level where total costs equal total revenue. Above it, you make money. Below it, you lose money. The formula:

$$\text{Break-Even Point (USD)} = \frac{\text{Fixed Costs}}{1 - \text{Variable Cost Percentage}}$$

Or, to calculate the number of customers you need:

$$\text{Break-Even Customers} = \frac{\text{Fixed Costs}}{\text{Average Contribution Margin Per Customer}}$$

Let's break that down.

Fixed costs are expenses that don't change with sales volume: rent, insurance, salaried manager pay, loan payments, software subscriptions, pest control. These you pay whether you serve 10 customers or 200.

Variable costs are expenses that move with sales: food cost, hourly labor, credit card processing fees, takeout packaging, linen service. These go up when sales go up and down when sales go down.

Contribution margin is what's left from each dollar of revenue after paying variable costs. If your variable costs are 65% of revenue, your contribution margin is 35%. That means 35 cents of every dollar goes toward covering fixed costs and, eventually, profit.

A Real Example

A full-service restaurant with the following monthly numbers:

Variable costs run at 62% of revenue (30% food cost, 25% hourly labor, 3% credit card fees, 4% other variable expenses). Contribution margin is 38%.

$$\text{Break-even} = \frac{\text{USD}18{,}800}{0.38} = \text{USD}49{,}474 \text{ per month}$$

This restaurant needs to do $49,474 in monthly revenue just to break even. That's about $1,649 a day. If their average check is $28, they need 59 customers a day. Every customer above 59 is profit. Every customer below is loss.

Why Break-Even Changes Every Month

Your break-even point isn't static. It moves. Here's what changes it:

Seasonality. December might have higher revenue and higher hourly labor (holiday pay, extra staff) and higher food cost (special menus, premium ingredients). Your variable cost percentage goes up. Your break-even goes up.

Menu changes. If you add a high-food-cost special that becomes popular, your variable cost percentage increases. Break-even rises. If you cut low-margin items and promote high-margin ones, variable cost percentage drops. Break-even falls.

Fixed cost changes. Rent increase at lease renewal. New equipment loan. Hiring a salaried sous chef. Every new fixed cost raises your break-even point permanently.

Price changes. Raising prices doesn't change your fixed costs, but it changes your variable cost percentage (food cost as a percentage of revenue drops). Contribution margin goes up. Break-even goes down. This is why raising prices is so powerful. It improves your break-even without requiring more customers.

The Most Common Break-Even Mistake

The most common break-even mistake: owners calculate break-even once, when they open, and never update it. Their rent went up 4% at renewal. They added a $400/month POS subscription. They hired an assistant manager at $48,000. Their break-even is now $6,000-8,000 higher than when they opened. They're wondering why they're not making money at the same revenue level that used to be profitable.

Recalculate your break-even every quarter. It takes 20 minutes. It prevents months of confusion.

How to Use Break-Even Analysis

Before opening a new location: Your break-even tells you the minimum revenue you need. If the location can't realistically generate that much, don't sign the lease.

When considering a major purchase: A $24,000 pizza oven financed over 3 years at 8% adds $752/month in fixed costs. At a 35% contribution margin, you need $2,149 more in monthly revenue just to cover the oven payment. Can you generate that?

When setting sales targets: Your break-even is the floor. Your target should be break-even plus your desired profit. If break-even is $49,474 and you want $8,000 in monthly profit, your target is $57,474. At a 38% contribution margin, that's:

$$\frac{\text{USD}8{,}000}{0.38} = \text{USD}21{,}053 \text{ above break-even}$$

When costs are rising: If your food supplier announces a 6% price increase, your variable cost percentage goes up. Your break-even goes up. You now know exactly how much you need to raise prices or increase volume to stay profitable.

Break-Even by Day Part

Smart operators calculate break-even by day part. Lunch might have a different variable cost structure than dinner (lower check average, different menu mix, different staffing). Knowing your lunch break-even tells you whether opening for lunch is actually worth it.

I've seen restaurants calculate that their lunch service needed $1,200 in daily revenue to break even. They were averaging $980. They'd been losing money on lunch for 3 years. They switched to dinner-only and their overall profit went up $3,400 a month. Even though total revenue dropped.

Use the Calculator

Manual break-even math works. Our break-even calculator is faster and lets you play with scenarios. What if rent goes up 5%? What if you raise prices 3%? What if food cost drops 2 points? See the impact on your break-even instantly.

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Related reading: Average Restaurant Profit Margins: The Brutal Truth · Restaurant Startup Costs in 2026 · Break-Even Calculator Guide