How Payment Terms Affect the Cash Conversion Cycle

What the Cash Conversion Cycle Means

The cash conversion cycle is the length of time between spending cash on inventory or materials and receiving cash from the eventual sale. A shorter cycle means cash is tied up for less time. A longer cycle means more of the business's own working capital is funding the gap between spending and being paid.

It is a useful measure precisely because it combines several things that are often looked at separately: how long stock sits, how long customers take to pay, and how long the business itself takes to pay its own bills.

The Three Parts of the Cycle

The cycle is usually broken into three parts, each measured in days:

• Inventory days: how long stock or materials sit before being used or sold
• Receivable days: how long it takes customers to pay once invoiced
• Payable days: how long the business itself takes to pay its own suppliers

Put together as a simple formula: cash conversion cycle equals inventory days, plus receivable days, minus payable days. Payable days are subtracted because that is time the business gets to hold onto its own cash before paying it out.

How Customer Payment Terms Affect It

Receivable days are directly set by the payment terms offered to customers. Net 30 terms paid exactly on time contribute roughly 30 receivable days. A term like 20th of the month following can add closer to 50 days, depending on when in the month the invoice is raised. Late payment stretches this further still, since receivable days reflect when the customer actually pays, not just the agreed due date.

A Supplier Example

Example: a manufacturer buys materials and holds them for 20 days before they go into production and delivery. The finished goods are invoiced on 30-day terms. The manufacturer's own suppliers are paid on 20-day terms. That gives inventory days of 20, receivable days of 30, and payable days of 20, for a cash conversion cycle of 30 days (20 plus 30 minus 20). During that 30 day window, the manufacturer is funding wages, freight and other operating costs from its own cash, before the customer's payment arrives.

Why Growth Can Increase Cash Pressure

A longer cash conversion cycle becomes more noticeable as a business grows, since more orders mean more cash tied up in the same gap between spending and being paid. A business can be growing and profitable on paper while genuinely struggling for cash, simply because the cycle has not been shortened to match the higher volume moving through it.

This is why growth can feel counterintuitive from the inside: more sales should mean a healthier business, but if each sale ties up cash for 30 or more days, rapid growth can tighten cash flow rather than ease it.

Ways to Shorten or Fund the Cycle

There are several ways to address a long cash conversion cycle, each with its own trade-offs:

• Deposits bring some cash forward at the start of an order, reducing how much the supplier has to fund itself
• Shorter payment terms directly reduce receivable days, though they may be less competitive for the buyer
• Better invoice accuracy and faster dispute resolution reduce delays that are not part of the agreed terms at all
• Automated reminders help keep actual payment closer to the agreed due date
• Reviewed trade credit policies can limit how far receivable days extend for higher risk customers, see the hidden cost of offering trade credit
• Invoice factoring advances cash against invoices already issued, at a cost. See invoice factoring in New Zealand vs PaidTerms
• Externally funded instalments can bring eligible invoice revenue forward from the point the invoice is issued

Where Business Instalments Fit

PaidTerms Capital lets an eligible customer pay an invoice in instalments while the supplier is paid the full amount upfront. In cash conversion cycle terms, this can effectively bring receivable days close to zero for that invoice, since the supplier is not waiting on the customer's own repayment schedule. It applies at the point an invoice is issued, so it works alongside the other approaches above rather than replacing all of them. For a fuller comparison of upfront payment against offering terms, see upfront payment vs payment terms.

Frequently Asked Questions