Working capital management means reducing the cash tied up in unpaid invoices and stock while paying suppliers on agreed terms. Track debtor days, stock days, and creditor days: for a business with AED 6 million in revenue, cutting debtor days from 61 to 45 frees roughly AED 260,000 in cash.
Most SMEs have more cash than they think. It is just not in the bank. It is sitting in unpaid invoices, on warehouse shelves, and in bills paid earlier than they needed to be. Working capital management is the discipline of getting that cash back, and for a growing UAE business it is often the cheapest source of funding available. This guide explains the three numbers that matter and how to improve each one.
What working capital is
Working capital is the money tied up in running the business day to day: what customers owe you, plus the stock you hold, minus what you owe suppliers. The more of it you have tied up, the less cash you have to spend, and the more a growing business needs to borrow just to stand still.
The three numbers that matter
Debtor days. How long, on average, customers take to pay you. Calculated as trade receivables divided by annual revenue, multiplied by 365.
Stock days. How long stock sits before it is sold. Calculated as stock divided by annual cost of sales, multiplied by 365.
Creditor days. How long you take to pay suppliers. Calculated as trade payables divided by annual cost of sales, multiplied by 365.
Put together, they give you the cash conversion cycle: debtor days plus stock days, minus creditor days. It tells you how many days your cash is tied up between paying for something and getting paid for it. The shorter it is, the less cash the business needs.
A worked example
Take a UAE business with AED 6 million in annual revenue and AED 1 million owed by customers at any one time. Its debtor days are about 61. If it brings that down to 45 days, it frees roughly AED 260,000 in cash, without selling a single extra thing. That is money that can fund stock, a hire, or simply sit as a buffer instead of borrowing.
If the same business holds 45 days of stock and pays suppliers in 30 days, its cash conversion cycle is 61 plus 45 minus 30, or 76 days. Every day taken off that cycle releases cash.
How to bring debtor days down
Invoice immediately. The clock starts when the invoice goes out, not when the work finishes.
Agree terms upfront and stick to them. Clear payment terms in every contract, and deposits or staged payments on larger work.
Make paying easy. Bank transfer details on every invoice, card or payment links where it suits your customers.
Chase on a routine. A reminder before the due date, a call on the day, and a firm follow-up after. Consistency matters more than tone.
Watch the ageing report. Know who owes what and for how long, every week.
How to bring stock days down
Order based on what actually sells, not on what you sold last year. Identify slow-moving and obsolete stock early and clear it, even at a discount, because stock that does not move is cash you will never see again. Count regularly so the records match the shelves, and work with suppliers on smaller, more frequent deliveries where you can.
Managing creditor days fairly
Paying suppliers early feels responsible, but it hands your cash to someone else. Pay on the terms you have agreed, not before, and negotiate longer terms where the relationship allows. The aim is not to pay late, which damages relationships and your reputation, but to stop paying early by default.
Growth eats working capital
This is the trap that catches fast-growing businesses. Every extra sale means more stock bought and more money owed to you before the cash comes back. A business growing 30% a year can run short of cash precisely because it is doing well. Knowing your cash conversion cycle lets you work out how much extra cash growth will need, and plan for it before it bites. Our cash flow forecasting guide shows how to see that coming.
Track it monthly
Debtor days, stock days, creditor days, and the cash conversion cycle belong in your monthly management accounts. Watching them move month to month tells you early whether cash is being released or quietly tied up.
How Blue Iris helps you free up cash
We measure your working capital, show you where cash is tied up, and put practical routines in place: invoicing and credit control, stock reviews, and supplier payment timing. As part of our fractional CFO service, we track the numbers monthly and build them into your cash flow forecast, so you can see the impact before it shows in the bank. Our founder, Ben Hogan, is an ACA Chartered Accountant and Certified CFO with Big Four experience.
Book a free consultation and we will show you how much cash your business has tied up, and how much of it you could release.
This article is general information, not financial advice, and is correct as at 24 October 2026. Your circumstances are specific to your business. Speak to a qualified professional before acting.
Frequently asked questions
What is working capital?
The money tied up in running the business day to day: what customers owe you plus the stock you hold, minus what you owe suppliers.
How do I calculate debtor days?
Trade receivables divided by annual revenue, multiplied by 365. For example, AED 1 million owed on AED 6 million revenue is about 61 days.
What is the cash conversion cycle?
Debtor days plus stock days, minus creditor days. It shows how many days your cash is tied up between paying for something and being paid for it.
What is the fastest way to free up working capital?
Usually reducing debtor days: invoice immediately, agree clear terms, take deposits on larger work, and chase overdue invoices on a fixed routine.
Why does a growing business run short of cash?
Growth needs more stock and more money owed by customers before cash comes back. Without planning, a profitable, fast-growing business can run out of cash.
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