Break-Even Calculator

The point where a business starts to earn

Every business begins each period in the red — rent, salaries and other fixed costs must be paid before a single sale brings in profit. The break-even point is the moment that changes: the exact level of sales at which total revenue finally equals total cost. Sell one unit less and you are running a loss; sell one more and you are in profit. Knowing this number transforms vague hope into a concrete, trackable target.

The engine: contribution margin

Break-even analysis rests on one central idea — the contribution margin. This is the selling price of a unit minus its variable cost, and it represents the amount each sale contributes toward covering fixed costs. Once enough units have been sold to cover those fixed costs entirely, every further unit's contribution drops straight to profit.

The maths is straightforward:

• Contribution margin = Price − Variable cost per unit
• Break-even units = Fixed costs ÷ Contribution margin
• Break-even revenue = Break-even units × Price

In the worked example, ₹5 lakh in fixed costs with a ₹400 contribution per unit means 1,250 units — ₹12.5 lakh in revenue — before profit begins.

Beyond simple break-even

The basic point tells you where losses stop, but two extensions make it far more useful. First, the margin of safety measures how far your expected sales sit above break-even; a wide margin means sales can fall considerably before you slip into a loss, which is a direct gauge of resilience.

Second, you can plan for a target profit rather than just survival. Add your desired profit to the fixed costs before dividing by the contribution margin, and the result tells you how many units you must sell to actually earn the money you want — not merely to cover costs.

Lowering the point and using it well

A lower break-even point means you reach profitability sooner and with less risk. There are three levers, and each widens the contribution margin or shrinks what it must cover:

• Raise the price, if the market allows, so each unit contributes more.
• Cut the variable cost per unit through better sourcing or efficiency.
• Reduce fixed costs like rent, subscriptions and overheads.

Because the point shifts every time any of these numbers changes, treat it as a living figure. Recalculate after a price revision, a rent hike or a jump in raw-material costs, and review it each quarter so your sales targets always reflect today's economics rather than last year's.