Working Capital Management

Working capital management is the process of optimizing a company's short-term assets and liabilities to ensure it has enough liquidity to meet its operating obligations while not tying up excess cash in unproductive assets. The goal is simple: collect cash from customers as fast as possible, pay suppliers as slowly as terms allow, and hold only as much inventory as operations require.

Think of working capital management like keeping your checking account funded enough to pay all your bills without leaving too much idle when it could be invested.

The Working Capital Cycle

Working capital moves in a cycle. Cash is used to purchase raw materials. Those materials become work-in-progress, then finished goods. Goods are sold, creating accounts receivable. Receivables are collected, returning cash. The speed of this cycle determines how much cash a business needs to keep operations running.

Companies that compress this cycle generate cash faster and need less external financing. Amazon, for example, often collects from customers before paying its suppliers. That creates a negative cash conversion cycle, meaning the business operates on its customers' cash rather than its own.

The Three Levers of Working Capital

Three variables determine how much cash is tied up in working capital:

• Days sales outstanding (DSO): The average number of days to collect payment after a sale. Reducing DSO means converting invoices to cash faster. A company with 60-day DSO collects twice as slowly as one with 30-day DSO.
• Days inventory outstanding (DIO): How long goods sit in inventory before being sold. Lower DIO means less cash tied up in unsold stock and less risk of obsolescence.
• Days payable outstanding (DPO): How long a company takes to pay its suppliers. Extending DPO keeps cash in the business longer, effectively borrowing from suppliers interest-free.

The cash conversion cycle combines all three: Cash Conversion Cycle = DSO + DIO - DPO. A lower or negative result signals better working capital efficiency.

How to Reduce DSO

Shortening the time between sale and cash collection is usually the highest-impact working capital improvement. Companies reduce DSO through early payment discounts, tightening credit terms for new customers, automating invoice delivery, and following up on overdue accounts faster. Supply chain finance programs, where a third-party lender pays the supplier early while the buyer retains its original payment terms, have also grown significantly as a DSO management tool.

Managing Inventory Without Creating Stockouts

Holding too much inventory wastes cash and risks obsolescence. Holding too little creates stockouts that damage customer relationships and forfeit sales. The right balance depends on demand volatility, supplier lead times, and the cost of carrying versus the cost of running out.

Just-in-time inventory minimizes DIO by receiving materials as close to the moment of use as possible. The 2021 to 2022 supply chain crisis exposed the risk in this approach: companies that had stripped safety stock from their systems faced production shutdowns when global logistics broke down. Most manufacturers since then have increased their strategic inventory buffers for critical components, accepting higher DIO in exchange for supply security.

Extending DPO Without Damaging Supplier Relationships

Large companies routinely extend payment terms with suppliers as a working capital management tool. Walmart, for example, can impose 60-day or 90-day payment terms on smaller suppliers who have no leverage to resist. For a small manufacturer, that delay can create its own cash flow pressure.

Dynamic discounting programs offer a middle path: suppliers can elect to receive early payment in exchange for a small discount, while buyers capture a return on their excess cash. Platforms like Taulia and C2FO connect buyers and suppliers within these dynamic payment programs.

Sources:
https://www.treasurers.org/knowledge-and-insight/topics/working-capital/
https://www.aicpa.org/
https://www.federalreserve.gov/econres/notes/feds-notes/