Short answer: profit is counted when you invoice, but cash arrives when the customer actually pays. If you pay suppliers in 14 days and get paid in 45, you fund that 31-day gap yourself, out of money you do not have yet. A profitable business can run out of cash and close.
This is the one that catches people completely off guard. The accounts say the business made money. The bank account says otherwise, and the two statements are both correct.
It is also the failure mode that kills businesses that were working. Nobody closes because of one unprofitable quarter. They close because payroll is due on Friday and the money is still sitting in someone else’s accounts payable.
Profit and cash are not the same thing
Profit is an accounting measure. It records a sale the moment you raise the invoice, whether or not any money has moved. Cash is what is actually in the bank today.
Take a business that invoices $30,000 in a month with $24,000 of costs. On paper it made $6,000. But if customers pay on 45-day terms while suppliers and staff are paid within 14 days, then during those 31 days the business has paid out most of the $24,000 and received almost none of the $30,000.
It is profitable and it is short of cash, at the same time, for the same month.
Work out your cash gap
The cash gap is the number of days between your money going out and coming back. Put your own figures in. Leave the stock field at zero if you sell services rather than products.
The figure that surprises people is not the number of days. It is how much of their own money is permanently sitting outside the business, funding other companies while they wait.
Why growth makes it worse
This is the cruel part, and the reason growing businesses fail more often than stagnant ones.
Every new order means paying for delivery before being paid for it. Double your sales and you roughly double the money tied up in the gap. Growth consumes cash before it produces any, so the faster you grow, the bigger the hole you must fund, and the hole arrives before the reward does.
Businesses that fail while growing are almost never unprofitable. They simply ran out of road before the money arrived.
The five ways cash disappears
| Where it goes | What it looks like |
|---|---|
| Slow payers | Agreed terms of 30 days that are really 50. The gap is whatever actually happens, not what the contract says. |
| Fast paying out | Suppliers paid immediately out of habit while customers take weeks. You are lending money for free. |
| Stock sitting still | Inventory is cash you have already spent, parked on a shelf until someone buys it. |
| Growth | Every new customer consumes cash first and repays it later. |
| Tax and lumpy bills | Quarterly or annual payments that feel like surprises because nothing was set aside monthly. |
How to close the gap
Shortening the gap releases cash once, permanently. It is not extra profit, but it is money you can use, and it is usually far easier to get than new customers.
- Invoice the day the work is done. Invoicing weekly instead of monthly can cut two weeks off the gap and costs nothing. This is the single most overlooked fix.
- Take deposits. A 30% to 50% deposit on larger jobs means the customer funds the delivery rather than you.
- Shorten terms on new customers. Set 14 days for anyone new. Existing customers are harder to move, new ones simply accept whatever you state.
- Chase earlier and automatically. Most late payment is not refusal, it is that nobody asked. A reminder before the due date, and again on it, fixes a surprising share.
- Use the full supplier terms you were given. If a supplier offers 30 days, paying on day 7 is a gift you cannot afford.
- Set aside tax weekly. Move a percentage into a separate account as money arrives, so the bill is already funded.
Try the first three in the calculator. Cutting payment days from 45 to 30 on a $30,000-a-month business releases around $15,000. That is cash you already earned and were simply waiting for.
The 13-week forecast
If you do one thing beyond closing the gap, do this. A rolling 13-week cash forecast is a spreadsheet with a column per week, listing money expected in and money due out, with the running balance beneath.
Thirteen weeks is far enough to see trouble while you can still act on it, and near enough that your estimates mean something. Update it weekly, which takes about ten minutes once it exists.
The point is not precision. It is that a shortfall in week nine becomes visible in week one, when you still have options: chase an invoice, delay a purchase, bring forward a deposit. Found in week nine, the same shortfall is a crisis.
Frequently asked questions
Can a profitable business really run out of money?
Yes, and it is one of the most common ways businesses fail. Profit counts a sale when invoiced. Cash arrives when paid. If the gap between those two is longer than you can fund, the business stops being able to pay its bills while still being profitable on paper.
What is a cash gap?
The number of days between paying for something and being paid for it. Add the days customers take to pay and the days stock sits unsold, then subtract the days you take to pay suppliers. The result is how long your money is away from you.
Why does growth cause cash problems?
Because every new order requires spending before receiving. More sales means more money tied up in the gap at once. Growth consumes cash first and returns it later, which is why fast-growing businesses can fail while profitable.
What is the fastest way to improve cash flow?
Invoice sooner. Most businesses invoice monthly out of habit when they could invoice on completion, which removes up to two weeks of delay immediately, costs nothing, and requires no conversation with anyone.
Should I take a loan to cover a cash gap?
Borrowing to fund a gap in a genuinely profitable business can be reasonable, but fix the gap first. Otherwise you are paying interest to avoid a conversation about payment terms, and the gap simply grows back.
How much cash should a business hold?
A common guide is three to six months of fixed costs. If that is out of reach, start with one month and build. The right figure also depends on your cash gap: a longer gap needs a larger buffer.
The short version
Profit is an opinion about a month. Cash is a fact about today. Work out your gap, then shorten it by invoicing sooner, taking deposits, and using the supplier terms you were already given.
Then build the 13-week forecast, because the businesses that survive a cash squeeze are the ones that saw it coming. Being profitable and short of money is a different problem from not being profitable at all, and it needs a different fix.
Related reading
More on profit and growth: