Break-Even Analysis

What Is Break-Even Analysis?

Break-even analysis determines the point at which a business's total revenue exactly covers its total costs — the moment it transitions from loss-making to profitable. At the break-even point, the business is neither making a profit nor a loss. Beyond it, every additional unit of revenue contributes to profit.

For startups, break-even analysis is a critical planning tool. It answers a question every investor will ask: how much do you need to sell to stop burning cash? Understanding this number shapes everything from pricing decisions to hiring plans to fundraising targets.

Fixed Costs, Variable Costs, and Contribution Margin

Break-even analysis distinguishes between two types of costs:

Fixed costs are costs that do not change with revenue volume — rent, salaries, software subscriptions, and insurance. A startup with $80,000/month in fixed costs must generate enough contribution margin to cover that $80,000 before it is profitable.

Variable costs are costs that scale with each unit sold — payment processing fees, packaging, delivery costs, or usage-based cloud infrastructure. Variable costs reduce the margin available from each unit sold.

Contribution margin is revenue minus variable costs per unit. It is the amount each sale contributes toward covering fixed costs and eventually generating profit.

Contribution Margin = Revenue per Unit − Variable Costs per Unit

The Break-Even Formula

Break-Even (units) = Fixed Costs ÷ Contribution Margin per Unit

Break-Even (revenue) = Fixed Costs ÷ Contribution Margin %

Example: A SaaS product charges $100/month. Variable costs per customer (hosting, support, payment fees) are $10/month. Contribution margin = $90/customer/month. Fixed costs = $45,000/month. Break-even = $45,000 ÷ $90 = 500 customers.

At 500 customers, the business exactly covers its fixed costs. At 600 customers, it generates $9,000/month in profit.

Using Break-Even Analysis as a Planning Tool

Break-even analysis is most useful as a "what-if" scenario tool:

What if we hire two more engineers? Adding $20,000/month in fixed costs raises the break-even from 500 to 722 customers.

What if we lower the price to $70? Contribution margin drops from $90 to $60 per customer, raising break-even from 500 to 750 customers.

What if we raise the price to $120? Contribution margin rises from $90 to $110, reducing break-even to 409 customers.

Running these scenarios reveals the financial sensitivity of major decisions before they are made.

Break-Even for Pre-Revenue Startups

Pre-revenue startups use break-even analysis to set meaningful revenue targets. If your monthly fixed cost base is $60,000, your break-even at 70% gross margin is $85,714/month in revenue. This sets a concrete goal: reach $85K MRR to stop burning cash.

Knowing the break-even revenue target also allows founders to work backward: how many customers at what ARPU is required? What CAC is acceptable if you need 857 customers at $100 ARPU to reach break-even? How long will it take to acquire those customers?

Break-Even vs Profitability

Reaching break-even (covering all costs) is not the same as generating investor-grade profitability. Investors typically focus on contribution margin-level break-even (covering variable costs and direct costs), gross margin-level break-even (covering COGS), and operating break-even (covering all operating expenses including sales, marketing, R&D, and G&A).

For most venture-backed startups, the target is operating break-even — the point at which the company no longer needs external capital to sustain operations. Reaching this milestone gives the company negotiating leverage in any future fundraise.