Before you can think about profit, you need to know where zero is. Break-even is that point: the exact number of units or amount of revenue where you stop losing money and start making it.
Knowing your break-even point isn’t just for new businesses. Established companies use it every time they launch a new product line, hire a new salesperson, or open a new location. Any fixed cost increase raises the break-even and should be consciously evaluated.
How the break-even formula works
Break-even units = Fixed costs / Contribution margin per unit
Contribution margin = Selling price per unit - Variable cost per unit
Fixed costs are the ones that don’t change with output: rent, salaries, software subscriptions, loan EMIs. Variable costs change with every unit sold: raw materials, packaging, delivery, payment gateway fees, per-unit commissions.
A business with ₹2L monthly fixed costs selling at ₹2,000 with ₹600 variable cost per unit has a contribution margin of ₹1,400. Break-even is 143 units/month. Sell 144 and you’re profitable. Sell 142 and you’re not.
Break-even revenue vs units
Break-even units is the operational target. Break-even revenue is what matters for cash flow planning: at what top-line revenue number do you cover all costs?
Break-even revenue = Break-even units × Selling price
If your fixed cost base is ₹5L/month and you sell consulting services at ₹50,000/engagement, you need 10 engagements/month to break even. That’s a specific sales target you can plan around, not an abstract number.
The 2x break-even scenario
The calculator also shows profit at 2x break-even. This isn’t a random multiple. It’s a useful gut-check: once you’ve comfortably exceeded break-even, how much are you actually making per extra unit sold?
At 2x break-even, every unit above break-even contributes pure contribution margin to profit, because fixed costs are already covered. A business with ₹1,400 contribution margin at 286 units (2× the 143 break-even) earns ₹2L profit on top of covering all fixed costs. That’s the real story.
Use the gross margin calculator to see how break-even performance relates to your overall margin health.