Break Even in Plain Terms

What break even means

Break even is the point at which a business has recovered all of its costs and has neither a profit nor a loss. OpenStax, the open textbook publisher at Rice University, describes it as the point where total cost equals what the business has taken in. The U.S. Small Business Administration gives the same definition and calls the calculation important for any new business.

Two kinds of cost

The calculation depends on sorting costs into two kinds. The SBA describes fixed costs as costs that do not change with an increase or decrease in production or services. The OpenStax textbook says variable costs remain fixed on a per unit basis. In plain terms, each extra unit carries about the same cost. The SBA also describes a middle category, semi variable costs, which are fixed up to a set level of production and become variable after it is exceeded.

The arithmetic

Both sources give the same formula in units. The SBA writes it as fixed costs divided by the difference between price and variable costs. A worked example in the OpenStax text divides $18,000 of fixed costs by a contribution margin of $80 per unit and arrives at 225 units. The SBA also gives a version in sales dollars, which divides fixed costs by the contribution margin. It suggests adding about 10 percent to the analysis for unpredictable expenses. We think the arithmetic is simple enough to do by hand, and that doing it by hand is a good test of whether the inputs are understood.

What the number leaves out

The OpenStax text states its assumptions. Selling price per unit stays constant regardless of volume, and all units produced are sold. It says no business can operate for very long below break even. It also calls its formulas general guidelines and notes that exceptions and complications could be incorporated.

We think this is the part founders skip. A break even figure is only as good as the cost split and the price behind it, and it says nothing about demand, meaning whether that many customers exist. We treat it as a question to ask before building, not an answer to rely on after.

MaxxForge is designed to serve outside founders as well as our own portfolio. We would still want any founder to run this arithmetic on paper first, whatever tool they use, ours included. We have relied on two public sources, both linked below. If you think we have misread either, please tell us.