What it means
Every business carries costs that must be paid whether it sells anything or not: rent, salaries, software subscriptions, insurance. Cash flow break-even asks one question: how much must we sell for the cash generated by those sales to cover the unavoidable cash costs?
Above that point the business funds itself, and below it someone has to top up the account. The distinction from accounting break-even matters because profit and cash are not the same thing.
A company with heavy depreciation on machinery it bought years ago can look loss-making on paper while its bank balance grows perfectly happily. Cash flow break-even strips out those paper charges and, in stricter versions, adds back real cash items the profit statement misses, such as loan principal repayments.
Founders and finance teams use the measure to work out runway, meaning how many months of cash remain before new funding is needed. If you know your monthly cash fixed costs and the cash contribution earned on each sale, you can state exactly how much monthly revenue keeps the balance level.
That single number is far easier to rally a sales team around than an abstract profit target. There is an important nuance around timing.
A business can sit exactly at cash flow break-even for the month and still run dry, because customers pay 60 days after invoicing while wages leave the account on the 25th. Cash flow break-even is a level, not a schedule, so it should always be paired with a weekly cash forecast.
Variants are common and worth agreeing in advance. Some teams calculate a tougher version that includes loan repayments, tax instalments and owner drawings, while others include only day-to-day operating costs.
Decide which definition your team means before anyone quotes the number in a board meeting.
In practice
Real-world examples.
Example
A gym franchise has $36,000 of monthly cash fixed costs and earns $60 of contribution per member per month after cleaning and card fees. It needs 600 members to reach cash flow break-even, so the owner sets 600 as the floor below which membership must never fall.
Example
A software start-up burns $180,000 a month and earns a 90% gross margin on subscriptions. Its cash flow break-even is $200,000 of monthly recurring revenue, a figure the board tracks at every meeting as the point where the next funding round becomes optional rather than urgent.
Example
A family printing firm looks unprofitable because of $150,000 of annual depreciation on a large press. Once the owner recalculates on a cash basis, the business is comfortably above cash flow break-even and can service its loan, which changes the conversation with the bank entirely.
Think of it
“Cash flow break-even is when cash coming in equals cash going out-no surplus, no deficit.
Formula
Calculation
Cash flow break-even units = Cash fixed costs / (Selling price per unit - Variable cost per unit), where cash fixed costs are total fixed costs minus non-cash charges such as depreciation.
A lighting manufacturer has total annual fixed costs of $480,000, of which $80,000 is depreciation on equipment bought three years ago. Cash fixed costs are therefore $480,000 - $80,000 = $400,000. Each lamp sells for $50 and costs $30 in materials and direct labour, giving a cash contribution of $20 per lamp.
Cash flow break-even = $400,000 / $20 = 20,000 lamps a year, which at $50 each is $1,000,000 of revenue.
By contrast, accounting break-even = $480,000 / $20 = 24,000 lamps. The 4,000-lamp gap is the sales volume the company can lose while still being cash-neutral, even though its profit statement would show a loss.Case study
Seen in the real world.
Lumen and Loft is an illustrative homeware brand invented for this entry. In its second year it reported an accounting loss of $70,000 and the founders assumed they needed emergency investment. Their accountant pointed out that $110,000 of the cost base was depreciation on shopfittings and a delivery van already paid for in cash.
Recalculating on a cash basis, cash fixed costs were $520,000 rather than $630,000, and with a $26 cash contribution per order the cash flow break-even fell to 20,000 orders a year against the 24,231 orders needed for accounting break-even. The company was running at 21,500 orders, so it was quietly cash positive.
The founders cancelled the fundraising, kept full ownership, and instead set a monthly order floor for the sales team. The fictional lesson is that a paper loss and a cash shortfall are different problems requiring different responses.
Watch out
Common mistakes.
- Treating cash flow break-even and accounting break-even as the same number, which usually overstates how much a business needs to sell to stay solvent.
- Forgetting to add loan principal repayments, tax payments and owner drawings, none of which appear as costs in the profit statement but all of which drain the bank account.
- Assuming that reaching cash flow break-even for the year means the business never runs short, when seasonal timing can still create severe mid-year gaps.
Questions
People also ask.
Does depreciation really get excluded?
Yes, because it is an accounting allocation of a past purchase rather than a payment made this period, so it never affects the bank balance.
How often should the calculation be refreshed?
Recalculate whenever pricing, headcount or supplier terms change materially, and at minimum once a quarter.
Is cash flow break-even a good target on its own?
No, it is a survival floor rather than a goal, since a business permanently at cash flow break-even generates nothing to reinvest or return to owners.
From the founder's library
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