The cash conversion cycle is the number of days between money leaving the business for materials and labour and money arriving from the customer.
Every day of it has to be funded, from cash or from borrowing. Shortening it releases money without earning any more.
It has three parts, and each is a separate lever.
Invoice sooner
The delay most often overlooked, because it is internal. Work finished on the third and invoiced at month-end has lost weeks before the customer has done anything at all.
Invoicing on completion removes that delay entirely and costs nothing.
Collect sooner
Days to get paid is the largest component for most service businesses.
It falls through the terms offered, how easy paying is made, and consistent follow-up rather than occasional chasing — see collections.
Deposits shorten it at the front instead, by moving part of the payment before the cost.
Pay suppliers later
Using the full terms a supplier offers, rather than paying on receipt, keeps money longer at no cost — see days to pay bills.
The limit is the relationship and any early-payment discount, which is frequently worth more than the days gained. It means paying to the terms, not beyond them: paying late damages business credit and supplier goodwill for a small gain.
Where inventory is held
Stock adds days, because it is bought before it is used — see improving inventory turns.
A negative cycle
Where customers pay before suppliers are due, the cycle is negative and the business is funded by its own trading. This is what deposits and recurring billing achieve, and it is the strongest cash position a small business can hold.