What Is a Break-Even Point?

The break-even point is the level of sales at which your total revenue equals your total costs — the point where you stop losing money and start making it. Below the break-even point, you're operating at a loss. Above it, every additional unit sold generates profit.

It's one of the most fundamental calculations in business finance, and one of the first things any lender, investor, or business advisor will want to see.

Break-Even Formula

The break-even formula depends on whether you're calculating by units or by revenue.

Break-even point in units: Break-Even Units = Fixed Costs ÷ (Selling Price per Unit − Variable Cost per Unit)

Break-even point in dollars: Break-Even Revenue = Fixed Costs ÷ Contribution Margin Ratio

The contribution margin is the amount left over from each sale after paying variable costs — the portion that goes toward covering fixed costs and generating profit. The contribution margin ratio expresses that as a percentage of the selling price.

Example: Fixed costs: $10,000/month Selling price: $50 per unit Variable cost: $20 per unit Contribution margin: $30 per unit Break-even point: $10,000 ÷ $30 = 334 units per month

Fixed Costs vs. Variable Costs

Understanding the difference is essential for any break-even analysis.

Fixed costs stay the same regardless of how much you produce or sell. Rent, salaried payroll, insurance, loan payments, and software subscriptions are fixed costs. They don't go up when sales increase and they don't go down when sales drop. This is what makes them dangerous — a slow month doesn't reduce them.

Variable costs scale directly with output. Raw materials, hourly labor, packaging, shipping, and transaction fees are variable costs. If you sell nothing, you pay nothing in variable costs. If you double production, variable costs double.

The higher your fixed costs relative to your revenue, the higher your break-even point — and the more vulnerable your business is to revenue fluctuations.

How to Read a Break-Even Chart

The break-even chart plots three lines against volume:

Revenue line — starts at zero and slopes upward. The steeper the slope, the higher your selling price.

Total cost line — starts at your fixed cost level (not zero) and slopes upward. The slope reflects your variable cost per unit.

Fixed cost line — a flat horizontal line showing your baseline overhead regardless of volume.

Where the revenue line crosses the total cost line is your break-even point. Everything to the left of that intersection is a loss. Everything to the right is profit. The wider the gap between the revenue and cost lines on the right side of the chart, the higher your operating leverage and the more profitable each additional unit becomes.

Break-Even Analysis for Restaurants

For restaurants and food service businesses, break-even analysis works slightly differently than product-based businesses because most costs are expressed as a percentage of revenue rather than a fixed per-unit cost.

Use the By Revenue method: enter your total monthly fixed costs (rent, salaried staff, insurance, loan payments) and your variable cost percentage (food cost % + variable labor % combined). The calculator will show you the monthly revenue you need to break even.

Example: Fixed costs: $28,000/month (rent $8K, salaried staff $14K, insurance/utilities $6K) Variable cost %: 60% (food cost 30% + labor 30%) Break-even revenue: $28,000 ÷ 40% = $70,000/month

If your restaurant does $70,000 a month, you're breaking even. Every dollar above that generates $0.40 in contribution toward profit. Every dollar below it costs you $0.40 in losses.

Most struggling restaurants don't know their break-even number. If you don't know yours, you can't make informed decisions about staffing, hours, pricing, or whether to keep the doors open.

Using Break-Even Analysis to Make Decisions

Break-even analysis isn't just a one-time calculation — it's a decision-making tool.

Should I hire another employee? Add their cost to fixed costs and recalculate. How many more units do you need to sell to cover it?

Should I lower my prices? Reducing price lowers contribution margin, which raises your break-even point. Run the numbers before discounting.

Should I open a second location? Model the fixed costs of the new location and calculate the revenue needed to break even before signing a lease.

Is this business viable? If your break-even point requires a level of sales that's unrealistic for your market, the math is telling you something important — before you invest another dollar.

At 5 Loaves, break-even analysis is one of the first things we do with every new consulting client. It tells us immediately whether a struggling restaurant has a revenue problem, a cost problem, or both. [Contact us] if your numbers aren't working and you want a clear picture of why.

FAQ Section

What is a break-even calculator? A break-even calculator takes your fixed costs, variable costs, and selling price and calculates the exact number of units — or dollar amount of revenue — you need to cover all your costs. This calculator also shows a break-even chart and a profit/loss table at multiple volume levels.

What is the break-even point formula? The break-even point in units equals fixed costs divided by the contribution margin per unit (selling price minus variable cost per unit). In dollars, it equals fixed costs divided by the contribution margin ratio. This calculator shows the full formula with your numbers plugged in after you calculate.

What is contribution margin? Contribution margin is the amount left from each sale after paying variable costs. If you sell a product for $50 and it costs $20 to produce, your contribution margin is $30. That $30 goes first toward covering fixed costs, and once fixed costs are covered, it becomes profit.

What is a good break-even point? There's no universal answer — it depends entirely on your cost structure, market size, and revenue potential. What matters is whether your break-even point is achievable. If you need to sell 10,000 units a month to break even and your market supports 3,000, your business model needs to change. A lower break-even point (relative to market capacity) gives you more margin for error.

How do I lower my break-even point? You can lower your break-even point by reducing fixed costs, reducing variable costs, or increasing your selling price. Reducing fixed costs has the most direct impact — every dollar of fixed cost you eliminate directly reduces the break-even point. Increasing price is often the fastest lever, but must be weighed against its effect on volume.

How is break-even analysis used in restaurants? Restaurants typically calculate break-even by revenue rather than units, using a combined food and labor cost percentage as the variable cost rate. Break-even revenue equals fixed monthly costs divided by the gross margin percentage. A restaurant with $25,000 in fixed costs and a 35% gross margin needs $71,400 per month to break even.