What a Good Cash Conversion Cycle Looks Like in Your Industry

Add your days of inventory outstanding and your days of sales outstanding together, then subtract your days of payables outstanding. Days of inventory measures how long inventory sits before it sells, days of sales outstanding measures how long it takes to collect from customers after a sale, and days of payables outstanding measures how long you take to pay your own suppliers. A software company with no physical inventory effectively drops that term out of the formula entirely, which is one of the reasons its cycle tends to look very different from a company that holds physical goods.

Payables days by industry span a wide range: software companies post payables days around 30.5, while computer services firms run closer to 63, and healthcare support services stretch out to roughly 51.5¹. Some of that gap reflects how much negotiating room suppliers give a given industry, and some of it reflects how the underlying cost structure of the business works, a services business with large recurring vendor relationships has more room to negotiate extended terms than one paying a large volume of smaller, less concentrated suppliers.

A software business with gross margins near 72 percent² can absorb a longer cash conversion cycle more comfortably than a business with thin margins, since more of each collected dollar is available to fund the gap rather than already spoken for by cost of goods sold. This is why comparing your cycle length in isolation, without also looking at your margin structure, can be misleading: a retailer and a software company with an identical cycle length in days are carrying very different amounts of real cash risk.

Focus first on days of sales outstanding, since it's usually the most controllable lever without changing your business model: tightening invoicing timing, following up systematically on aging receivables, and offering an early payment incentive to slow-paying customers all move this number without touching how you buy or sell. Extending payables days is the second lever, but push carefully, since stretching supplier terms too aggressively can damage a relationship you'll want intact the next time you need flexibility from that same supplier.

Start with days of sales outstanding and use levers like these:

• Tighten invoicing timing so bills go out promptly after a sale instead of waiting on internal delays.
• Follow up systematically on aging receivables rather than chasing only the largest or loudest accounts.
• Offer an early payment incentive to slow-paying customers so they have a reason to pay sooner.
• Extend payables days carefully, without paying suppliers so late that relationships and pricing suffer.

A single slow-paying customer or a one-time inventory buildup can distort the cycle for a single month without reflecting any real change in how the business operates. Track the cycle on a rolling basis, comparing a trailing period against itself over time, rather than reacting to any single month's number in isolation. The trend across several periods tells you far more about whether your working capital management is genuinely improving or slipping than any one snapshot does.

The three components of the cycle are each owned operationally by someone outside finance: sales sets invoicing and collection terms, operations manages inventory levels, and procurement negotiates payment terms with suppliers. Sharing the cycle and its components with those teams directly, rather than keeping it as an internal finance metric, tends to move the number more than finance chasing it alone, since the people who actually control each lever rarely see the combined effect of their decisions otherwise.