The Cash Conversion Cycle: Why Profitable Brands Still Run Out of Money

Profit and cash are different questions, and the cash conversion cycle is the bridge between them. It measures how many days your money is locked up between paying a supplier and collecting from a customer. The longer that gap, the more cash every extra pound of growth demands.

The formula

Cash conversion cycle = Days inventory outstanding + Days sales outstanding − Days payables outstanding

• Days inventory outstanding: average inventory ÷ daily cost of goods sold. How long stock sits before it sells.
• Days sales outstanding: how long after the sale you actually have the money. For DTC this is card settlement plus marketplace payout delay; for wholesale it is your invoice terms and how well they are enforced.
• Days payables outstanding: how long you take to pay suppliers, including deposits paid before production starts.

A brand holding 110 days of stock, waiting 14 days for payouts and paying suppliers in 30 days runs a 94-day cycle. That means roughly a quarter of a year of cost of goods is permanently funded out of your own pocket – and it grows in proportion to revenue.

Why growth makes it worse

Every additional unit of demand requires stock ordered and paid for weeks or months earlier. At a 90-day cycle, doubling revenue roughly doubles the cash tied up in working capital. This is the mechanism behind the most common founder surprise: the best trading quarter on record, followed by the tightest cash month.

The four levers, in order of speed

1. Payout and settlement timing. The quickest win, and the one most brands never check. Marketplace payout schedules, card settlement terms and BNPL provider terms are negotiable at scale, and moving a 14-day payout to 7 releases cash immediately without touching operations.

2. Supplier terms. Deposits and balance timing usually matter more than the headline payment days. Moving from full payment on order to a smaller deposit plus balance on shipment can free weeks of cash on every order.

3. Inventory discipline. The largest lever, the slowest to pull. Range reduction, smaller and more frequent orders, and killing slow lines shortens days inventory outstanding permanently. Start with the SKUs sitting longest, not the ones with the worst margin.

4. Receivables enforcement. Wholesale and B2B only, and mostly a process problem: invoice on dispatch, chase on a schedule, stop shipping to accounts past terms.

What to do with the number

Calculate it monthly and watch the trend rather than the absolute figure. Then use it in two places: in your 13-week cash forecast, so purchase orders are modelled with the real timing; and in your growth plan, so a revenue target comes with the working capital it will consume attached.

A brand that knows its cycle can say what a growth plan costs in cash before committing to it. That is usually the difference between funding growth deliberately and discovering the gap on the day payroll runs.