Every Order Makes Money. Why Does More Business Leave You Short on Cash?
Each invoice turns a profit, customers keep ordering, and still the owner can't cover the next batch of materials. One common reason is payment timing: the costs of delivery come due today, and the customer's money lands weeks later. Every extra order widens that gap a little more.
So when deciding whether to take on more work, there are two numbers worth knowing. One says how much the batch leaves you with once it settles out. The other says how far below zero you sink before the payments arrive.
Running the same orders through two different ledgers
Picture a small supplier of corporate gift boxes. Each order sells for 1,200 yuan; materials, subcontractors and delivery add up to 840 yuan. The setup for this example:
- 100,000 yuan of usable cash to start.
- Day 1: pay the full delivery cost of the batch, then ship on schedule.
- Day 15: pay 10,000 yuan of fixed overhead.
- Day 31: the customer pays in full.
- Nothing else happens, no extra jobs, taxes, refunds or borrowing, so the timing stays visible.
- Existing staff and equipment can comfortably handle either 100 or 300 orders.
All figures in yuan. First pass: the profit sheet. What does the batch finally leave behind?
| Item | 100 orders | 300 orders |
|---|---|---|
| Sales revenue | 120,000 | 360,000 |
| Delivery costs | 84,000 | 252,000 |
| Fixed overhead | 10,000 | 10,000 |
| Result for the batch | 26,000 | 98,000 |
Three hundred orders clearly wins on paper. Second pass: the calendar. Follow the actual money day by day:
| Point in time | Balance, 100 orders | Expected balance, 300 orders |
|---|---|---|
| At start | 100,000 | 100,000 |
| After paying delivery costs, day 1 | 16,000 | −152,000 |
| After fixed overhead, day 15 | 6,000 | −162,000 |
| After receiving payment, day 31 | 126,000 | 198,000 |
Those negative numbers are money that has to be found. On day 1 the supplier is already 152,000 short. By day 15 the hole has grown to 162,000. The bigger batch is only workable if something changes: the customer pays sooner, some costs are paid later, or additional funding is arranged.
The two tables answer different questions. Profit says what the transactions leave behind. The calendar shows what has to sit waiting in the middle. When growing, read them together.
Same profit, less money out front
Now suppose the customer agrees to half up front. On 300 orders that's 180,000 arriving at the start, the rest on day 31.
You begin with 280,000. Day 1 takes out 252,000, leaving 28,000. Day 15 takes out the 10,000 overhead, and the floor of the whole cycle is 18,000. Never negative, and no borrowing needed.
Price and costs are unchanged, and the profit is still 98,000. What changed is who carried the wait, and for how long.
Whether a prepayment can be negotiated depends on what the customer is buying with it: a firm spec sheet, an approved sample, acceptance checkpoints, clear terms if they cancel. If they want to see results before committing, split the batch. Deliver part, invoice part, and keep going with the money already back in hand.
You can also discuss longer payment terms or smaller purchasing batches with suppliers. These changes can reduce the amount you must fund at one time. After any such change, re-check what moved, unit price, freight, delivery dates, and put the numbers back into both tables.
Why Costco can sell before it pays
Costco does this at scale. In its quarterly report for the period ended February 15, 2026, it reported that it often sells inventory before payment to suppliers is due. Goods move fast, vendors give it time, and the money spends less time parked inside the business.
That's also why two companies with nearly identical margins can carry very different cash needs. One buys stock, sells on credit and waits. The other turns inventory quickly, collects quickly, and pays suppliers later. The speed of the round trip decides how much working cash each one has to keep around to grow.
That span from paying out to collecting back has a name: the cash conversion cycle. Services run on the same clock, subcontract prepayments, monthly payroll, sign-off and the final invoice all sit on dates.
Before the next batch, find your lowest day
Put everything with a due date on one calendar: upcoming purchases, payroll, fixed costs, and every collection the customer has already agreed to. Run the balance forward, day by day or week by week.
For orders still on the table, run a separate version. If a customer is known to pay slowly, slide their payment later and see what the new floor looks like.
Then the decision gets concrete instead of general: pull one payment in earlier, agree to pay a supplier later, or split the batch so it fits inside the cash already on hand. The profit on the new orders, the capacity to deliver, and the cash they require all line up with real dates. That gives the expansion a workable funding and delivery plan.
Keep reading: first, work out each transaction's contribution and fixed costs; then decide where the next round of money and time should go.