What Is a Good Cash Conversion Cycle? The Benchmarks, the Math, and Where the Days Hide

Top-performing middle market companies turn a dollar of spend back into a dollar of cash in about 24 days. Their slower peers take 44. That comes from PYMNTS Intelligence's June 2026 Growth Corporates Working Capital Index, and the 20-day spread is worth more than it sounds. At $25M in revenue, twenty days of working capital is roughly $1.4M sitting somewhere other than your bank account.

Nobody wired that money away. It's in receivables that quietly aged past terms, inventory somebody ordered on a hunch in Q1, and vendor terms nobody has renegotiated since 2021.

The formula, and what it's really telling you

Cash conversion cycle = DSO + DIO − DPO.

• DSO (days sales outstanding): accounts receivable ÷ revenue × 365. How long your customers take to pay you.
• DIO (days inventory outstanding): inventory ÷ COGS × 365. How long product sits before it sells.
• DPO (days payable outstanding): accounts payable ÷ COGS × 365. How long you take to pay suppliers.

Run it on a real set of numbers. Say you're a $25M distributor with $15M in COGS, $3.4M in receivables, $2.5M in inventory, and $1.5M in payables:

• DSO = 3.4 ÷ 25 × 365 = 50 days
• DIO = 2.5 ÷ 15 × 365 = 61 days
• DPO = 1.5 ÷ 15 × 365 = 37 days
• CCC = 50 + 61 − 37 = 74 days

Seventy-four days between paying for something and getting paid for it. That's 74 days you're financing off your own balance sheet, a line of credit, or both.

So what's a good cash conversion cycle?

There's no universal number, and anyone who hands you one is selling something. A software company with no inventory and monthly billing can run negative. A distributor carrying two months of stock will never see 24 days no matter how well it's run. The comparison that matters is your own trend line and your own industry, not a headline average across a mixed sample.

Two reference points are still worth knowing. The Credit Research Foundation's Q4 2025 domestic trade receivables survey put the broad median DSO at 40.5 days. And in the PYMNTS index, the distance between the leaders and the laggards was 20 days. If your DSO is well north of 50 and your cycle has been drifting up for three straight quarters, you don't need a benchmark to tell you there's a problem.

Where the days actually hide

Most companies attack this by telling the AR person to make more collection calls. That's the smallest lever in the room.

Receivables. The problem is rarely collections effort. It's usually the invoice going out four days after the job closes, or going out wrong and getting disputed, or terms that got extended during a sales negotiation and never made it back to finance. Look at your AR aging by customer and by reason. If a third of the past-due balance sits with two accounts, that's a commercial conversation, not a dunning problem. And if invoices average five days from delivery to send, you gave away five days for free before anyone even owed you money.

Inventory. Ask what share of your SKUs produced 80% of last year's COGS. In most mid-market distributors and manufacturers the answer lands somewhere around a fifth of them, and the long tail is where the trapped cash lives. Slow-moving stock never shows up on the P&L. It just sits in the inventory line looking like an asset.

Payables. The easiest days to win and the easiest to overplay. Moving your top ten vendors from net 30 to net 45 can pull weeks out of the cycle. But stretching a supplier who's also single-source on a critical part is how a working capital win turns into a stockout. Do it vendor by vendor, and know which relationships can absorb it.

What the days are worth in dollars

Back to that $25M distributor. Cut DSO from 50 to 42 and receivables drop from $3.4M to roughly $2.9M. That's about $550K of cash, released once and permanently, without a new customer or a new dollar of debt.

Trim inventory by 10 days and you free another $410K. Add 8 days of payables and there's $330K more. No single one of those is dramatic. Together it's around $1.3M, which for a company this size is bigger than anything the sales team is delivering in the same quarter.

The second-order effect matters as much as the cash. A company that converts three weeks faster gets three extra weeks of decision-making room. It can hire earlier, restock earlier, and absorb one bad month without a covenant conversation.

It's a visibility problem before it's a discipline problem

Here's the part most people have backwards. The PYMNTS research made the point directly: the strongest performers weren't asking how to optimize cash. They were asking how to improve visibility. Their cycles were shorter because finance, operations, and procurement were working off the same information, not because their AR clerk was more aggressive on the phone.

That matches what actually goes wrong at $5M–$50M. Nobody is measuring the cycle monthly. Receivables live in the accounting system, inventory lives in the warehouse system or someone's spreadsheet, and purchasing decisions get made without anyone modeling the cash effect. By the time the cycle has stretched ten days, it's been stretching for two quarters, and it gets discovered the week somebody has to draw on the line.

You can't manage a number you look at once a year during the audit.

Where to start if you're starting from zero

Pull four quarters of DSO, DIO, and DPO. Not one snapshot. Four points, so you can see direction. Most teams find the trend more useful than the level, because the trend is the part they control.

Then put the cycle and its three components on the monthly reporting package, right next to the P&L, with a one-line note on what moved and why. Same discipline as variance commentary: a number without the story behind it doesn't change anyone's behavior.

After that, pick one lever per quarter. Chasing all three at once means doing none of them well, and the receivables fix and the inventory fix live with completely different people in your building.

The companies that win on working capital aren't the ones with the most capital. They're the ones who can see what's happening inside their own business fast enough to act on it. That's a reporting cadence problem, and a quarter is usually enough to fix it.

Plametrix builds this into the monthly close for PE-backed and growing companies: cash conversion cycle tracked next to the P&L, with commentary that says which lever moved and what to do about it.