What Is Working Capital and Why Does It Matter?
Working capital represents the operational liquidity of a business — its ability to fund day-to-day operations and meet short-term obligations. Current assets include cash, accounts receivable, and inventory. Current liabilities include accounts payable, short-term loans, and accrued expenses.
Positive working capital is the norm for most businesses, but negative working capital isn't always dangerous. Supermarkets and SaaS businesses with annual prepayments often operate with negative working capital by design — they collect cash before paying suppliers or recognising revenue. The key is whether the business model sustains itself.
SaaS and Negative Working Capital
SaaS companies billing annually collect subscription cash upfront, creating deferred revenue (a current liability). This means many healthy SaaS businesses show negative working capital — not because they're in trouble, but because they've collected future-period cash in advance. Always understand the composition of current liabilities before drawing conclusions from the ratio alone.
Managing the Working Capital Cycle
The working capital cycle is the time between paying for inputs and collecting revenue. A shorter cycle means less capital tied up in operations. Businesses can improve working capital by: collecting receivables faster, paying payables more slowly (within terms), and reducing inventory days.
Working capital requirements typically grow with revenue — a business doubling revenue often needs twice as much working capital. This is a significant cash drain in fast-growth periods and must be planned for in financing. Many profitable businesses have been forced into insolvency by outgrowing their working capital.
1.5–2×
Target current ratio for most businesses
30 days
Target accounts receivable collection period
45 days
Target accounts payable extension period
Cycle
AR days + inventory days − AP days = WC cycle