Cash conversion cycle: what it is and how to calculate it

The cash conversion cycle (CCC) is the number of days it takes a company to turn cash spent on inventory and operations back into cash collected from customers. It measures how long your money stays tied up in the business before it returns, and a shorter cycle frees up cash you can use elsewhere.

The CCC connects three operating timelines: how long inventory sits, how long customers take to pay, and how long you take to pay suppliers. Of these, collections is the lever a finance team controls most directly. You can not always make customers buy faster or suppliers wait longer, but you can chase your own receivables harder, which is why compressing collections is often the fastest way to shorten the whole cycle.

CCC formula and components

The cash conversion cycle adds the time cash is tied up in inventory and receivables, then subtracts the time you get to hold off paying suppliers.

CCC = DIO + DSO - DPO

The three parts:

• Days inventory outstanding (DIO): how long inventory sits before it sells. DIO = (Average inventory / Cost of goods sold) x days.
• Days sales outstanding (DSO): how long customers take to pay after a sale. DSO = (Accounts receivable / Credit sales) x days.
• Days payable outstanding (DPO): how long you take to pay suppliers. DPO = (Accounts payable / Cost of goods sold) x days.

DIO and DSO add to the cycle because they are days your cash is locked up. DPO subtracts because supplier credit funds your operations for free during that window.

A worked example

Take a distributor with these figures for the year:

• Days inventory outstanding: 50 days
• Days sales outstanding: 45 days
• Days payable outstanding: 35 days

CCC = 50 + 45 - 35 = 60 days

This company has 60 days where its cash is committed before it comes back. Now suppose the team tightens collections and brings DSO down from 45 to 30 days:

CCC = 50 + 30 - 35 = 45 days

A 15-day improvement in DSO cut the cash conversion cycle by a quarter, without touching inventory or supplier terms. On a business turning over millions in receivables, that is a large amount of cash freed up and available to fund operations or growth.

What is a good cash conversion cycle

There is no single target, because the cycle depends heavily on industry. A grocery chain that sells inventory fast and pays suppliers on terms can run a negative CCC, collecting from customers before it pays for goods. A manufacturer with long production runs and net-60 customers will naturally run a longer cycle.

The useful comparison is against your own trend and your direct peers. A cycle that is shrinking quarter over quarter means the business is getting more efficient with its cash. A cycle that is creeping up means cash is getting trapped somewhere, usually in slower collections or rising inventory.

How to shorten the cash conversion cycle

Each component offers a lever, but they are not equally easy to pull.

1. Collect faster (lower DSO). The most controllable lever. Tighten follow-up, resolve disputes quickly, and work overdue accounts the moment they age. This is where most teams find the quickest wins.
2. Move inventory faster (lower DIO). Improve forecasting and reduce slow-moving stock so cash is not sitting on shelves.
3. Extend payables sensibly (raise DPO). Negotiate longer supplier terms where you can, without straining relationships or forfeiting early-payment discounts that are worth more than the float.

Of these, collections is where a finance team has the most direct control. Inventory and supplier terms involve other functions and external parties; receivables you can act on today.

How Rex compresses the collections side

Of the three levers, DSO is the one you own outright, and it is where the cash conversion cycle responds fastest. Rex shortens it by working the receivables ledger continuously. It follows up on every invoice the moment it ages, resolves the disputes and short pays that freeze cash, and keeps the pressure on the long tail of accounts a stretched team would skip. Cash that used to sit in 60 and 90-day buckets comes in sooner.

When an account needs a human decision, Rex escalates it and keeps working the rest of the book. By steadily pulling DSO down across the whole ledger, Rex compresses the largest controllable piece of the cash conversion cycle. See how Rex runs collections end to end.