Starting a business is a wildly optimistic act, and the odds know it. According to the Bureau of Labor Statistics, about 20 percent of new US businesses fail in their first year, roughly half are gone within five years, and about two-thirds have closed by year ten. Those numbers have been remarkably stable across decades and recessions, which tells you the failure rate is baked into the act itself, not just bad timing.
The comforting part, if you are staring down those odds, is that failure is rarely a mystery. Most businesses do not die of some exotic cause. They run out of cash because the underlying math never worked, and that math is knowable in advance.
What percentage of small businesses fail?
The BLS tracks this by following new establishments over time. Roughly 20 percent fail in year one, about 49 percent within five years, and around 65 percent within ten. Survival varies by industry, but the broad shape holds everywhere: the first few years are the deadliest, and simply lasting is an achievement.
The chart shows how the attrition compounds. Getting past year five means outlasting about half of everyone who started alongside you.
U.S. Bureau of Labor Statistics, Business Employment Dynamics.
- By year 1: 20%
- By year 5: 49%
- By year 10: 65%
Why do most businesses actually fail?
They run out of money, and they run out of money because the unit economics were off. If you do not know your margin on each sale, your fixed costs, and how many units you must sell just to break even, you are flying blind, and the ground arrives faster than you think.
Two numbers do most of the diagnostic work. Your margin, which the markup and margin calculator turns from cost and price into the percentage you actually keep, and your break-even point, which the break-even calculator derives from fixed costs and contribution margin. Together they answer the only question that matters early on: does selling more make money, or lose it faster?
The numbers a survivor keeps close
Businesses that last tend to obsess over a short list of figures:
- Gross margin: the share of each sale left after the cost of the product. Thin margins leave no room for error.
- Break-even volume: how many units cover your fixed costs before profit even begins.
- Cash runway: how many months of expenses you can cover before you need more revenue or funding.
- Return on investment: whether the money you put into inventory, ads, or equipment actually earns its keep, which the ROI calculator makes explicit.
The bottom line
About one in five new businesses fails in year one and nearly half within five years, and the usual cause is running out of cash because the math never worked. The survivors are not lucky so much as numerate: they know their margin, their break-even point, and their runway before they need them. Model those numbers first, revisit them often, and you move yourself from the half that folds toward the half that lasts.