Break-Even Calculator for Subscription Boxes

A break-even calculator finds the point where your revenue exactly covers your costs, so you make neither a profit nor a loss. For a subscription box, that point is a subscriber count: the number of monthly boxes you need to sell so that the margin from each box pays all of your fixed monthly costs. This calculator also shows your break-even revenue, how many months it will take to get there at your current growth, and when you will earn back your startup money.

Divide your total fixed costs by your contribution margin per unit. Contribution margin is your selling price minus every cost that grows with each box sold: products, packaging, shipping, fulfillment, and payment fees. For example, a $40 box with $26 of variable costs has a $14 contribution margin. If fixed costs are $1,000 a month, the break-even point is $1,000 divided by $14, which is 72 subscribers after rounding up.

Break-even point in units = fixed costs ÷ (price per unit − variable cost per unit). Break-even revenue = break-even units × price, or fixed costs ÷ contribution margin ratio. The contribution margin ratio is the contribution margin divided by the price. A box with a $14 margin on a $40 price has a 35% ratio, so $1,000 of fixed costs needs $2,857 in monthly revenue to break even.

Most subscription boxes break even somewhere between 60 and 200 subscribers when fixed costs are around $1,000 to $1,500 a month. The price of the box matters most. At $1,500 in fixed costs and a 38% contribution margin, a $25 box needs 158 subscribers while a $55 box needs only 72. Once you add a founder salary, the number often rises to 300 to 500 subscribers.

Include your planned monthly marketing budget, because you will spend it whether a subscriber joins or not. Include your own pay if you want to know when the business can actually support you. Leaving your salary out tells you when the box stops losing money. Putting it in tells you when the box becomes a real job. Run the calculator both ways and compare the two numbers.

Break-even is the monthly point where revenue covers monthly costs. Payback is the month when your total profits finally cover the money you spent to launch, such as your first inventory, packaging order, and website. You always reach break-even first. After that, every month of profit reduces the startup money you still need to earn back.

Your break-even point depends only on price, variable costs, and fixed costs. Churn decides how fast you can reach it. With 30 new subscribers a month and 8% monthly churn, your list can never grow past about 375 subscribers, because at that size you lose as many as you gain. If your break-even point is above that ceiling, you will never get there without lowering churn or growing faster.

No. This page answers how many subscribers you need to cover your costs. The 3PL vs self-fulfillment calculator answers a different question: at what subscriber count outsourcing your packing to a warehouse becomes cheaper than doing it yourself. Use this calculator first, then use the 3PL comparison once you pass a few hundred subscribers.