Working capital management: An essential guide

Some businesses survive without profit, while others struggle despite being profitable because the money arrives after the bills do. Working capital helps bridge that gap. 

External finance can cover a shortfall, but borrowing to compensate for poor cash flow management can leave a business with debt that is difficult to repay. Managing working capital well reduces reliance on lenders and ensures businesses have enough cash to meet immediate obligations and cover day-to-day costs. 

What is working capital? 

Working capital represents the funds available to finance and sustain the operations of a company after removing current liabilities from their current assets. It indicates the company's liquidity or the liquid funds available to fulfil payment obligations and sustain operations. 

As a metric, it provides a snapshot of the short-term financial health and efficiency of the organisation. 

Components of working capital 

The two major components are: 

Current assets: Items that can be converted into cash, sold or used within a year. These include cash, inventory, trade receivables and prepayments. 

Current liabilities: Amounts the business owes within a year, covering trade payables, wages, loan repayments due, taxes and payments received in advance. 

Gross and net working capital 

Gross working capital is total current assets. Net working capital is current assets minus current liabilities, and it's the figure most people mean by "working capital". 

What is working capital management? 

Working capital management is the day-to-day control of current assets and liabilities so a business can pay its bills, run operations and meet its short-term financial commitments while supporting longer-term business goals. It covers cash, receivables, payables, inventory and short-term financing. 

Why working capital management matters 

Without enough working capital, a business may struggle to pay suppliers, run payroll or buy stock. Effective management helps ensure cash is available to meet obligations as they fall due, keeping supplier payments on track and orders fulfilled. 

It frees up cash to invest in growth, including new products or markets, while reducing reliance on borrowing. It also gives businesses more room to maintain a cash buffer for unexpected events, strengthening their financial resilience and reducing the risk of insolvency. 

How to calculate working capital 

Working capital = Current assets − Current liabilities 

Example: A company has £200,000 in current assets and £100,000 in current liabilities. 

£200,000 − £100,000 = £100,000 

This gives the company £100,000 in net working capital. 

A net positive value from the calculation indicates that the company has more short-term assets than liabilities. A negative result indicates that short-term liabilities exceed assets, which may signal liquidity issues and difficulties meeting financial obligations. 

Working capital metrics to monitor 

The following metrics help assess how effectively a business manages its working capital. The examples below use one illustrative business with annual credit sales of £5 million and a cost of sales of £3 million. 

1. Working capital ratio (current ratio) 

The working capital ratio, also known as the current ratio, is calculated by dividing current assets by current liabilities. It indicates a business’s ability to meet its short-term obligations. 

Current ratio = current assets ÷ current liabilities 

Example: £200,000 ÷ £100,000 = 2.0 

A ratio below 1 means current liabilities exceed current assets, which may signal difficulty meeting short-term obligations. A healthy level depends on the sector. A supermarket that is paid in cash at the till can run a low ratio, while a manufacturer that holds stock and offers credit usually needs a higher one. A high ratio can mean cash or stock is sitting idle. 

2. Days sales outstanding (DSO) 

DSO measures the average number of days it takes a business to collect payment after a credit sale. It indicates how efficiently the business manages its accounts receivable. 

DSO = (average trade receivables ÷ credit sales) × 365 

Example: £616,000 ÷ £5,000,000 × 365 = 45 days 

3. Days inventory outstanding (DIO) 

DIO measures the average number of days stock is held before it is sold. It indicates how quickly a business moves inventory, with a lower DIO generally meaning faster stock turnover. 

DIO = (average inventory ÷ cost of sales) × 365 

Example: £250,000 ÷ £3,000,000 × 365 = 30 days 

4. Inventory turnover 

Inventory turnover measures how many times a business sells and replaces its average inventory over a given period. It is calculated by dividing cost of sales by average inventory. 

Inventory turnover = cost of sales ÷ average inventory 

Example: £3,000,000 ÷ £250,000 = 12 times a year 

A turnover well below the sector norm can point to slow-moving stock, while a higher turnover generally indicates that stock is selling more quickly. 

5. Days payable outstanding (DPO) 

DPO measures the average number of days a company takes to settle its accounts payable, covering payments to suppliers for goods and services purchased on credit. It provides insight into how the business manages supplier payments and its cash flow. 

DPO = (average trade payables ÷ cost of sales) × 365 

Example: £288,000 ÷ £3,000,000 × 365 = 35 days 

Cost of sales is used here as an approximation of credit purchases. 

6. Cash conversion cycle (CCC) 

The cash conversion cycle measures the average number of days it takes a business to recover the cash invested in inventory, from paying suppliers to collecting payment from customers. A lower CCC generally indicates more efficient working capital management, with faster inventory turnover and quicker collection of customer payments. 

CCC = DSO + DIO − DPO 

Worked example: 45 + 30 − 35 = 40 days 

If the business reduces DSO from 45 to 35 days, its CCC would fall from 40 to 30 days.  This could release around £137,000 of cash currently tied up in trade receivables (£5,000,000 ÷ 365 × 10), assuming credit sales are spread evenly throughout the year. 

Late payment and UK payment rules 

Late payment is one of the biggest drains on working capital for UK businesses. According to the Department for Business and Trade's Large businesses' payment practices and performance statistics 2025, nearly one in six invoices reported by large UK businesses were paid late in 2025. 

The Commercial Payments Bill, introduced in May 2026, proposes maximum payment terms of 60 days for business-to-business transactions and 30 days where the buyer is a public authority, subject to limited exemptions. The Bill completed its passage through the House of Lords in October 2026 and is now being scrutinised by the House of Commons. These measures are not yet law, with most expected to take effect in late 2027 or early 2028, subject to parliamentary approval. 

Ways to manage working capital 

Too little working capital can disrupt day-to-day operations, while too much can tie up funds that could be put to better use. The following measures can help maintain the right balance. 

Cash flow management 

Track cash inflows and outflows regularly, identify trends and address potential shortfalls early. This helps maintain enough cash to meet day-to-day obligations and make informed financial decisions. 

Cash flow forecasting 

Use rolling cash flow forecasts to estimate cash needs over the coming weeks and months. A 13-week forecast helps identify short-term shortfalls, while a 12-month view supports longer-term planning. This gives businesses time to arrange funding, adjust spending or build reserves before cash becomes tight. 

Receivables 

Run credit checks before offering payment terms, set appropriate credit limits and invoice promptly. Use a consistent process for sending payment reminders and following up on overdue invoices. Reducing the time it takes to collect invoices lowers DSO and makes cash available sooner. Automating invoicing can help reduce manual delays and improve collection efficiency. 

Payables 

Pay suppliers in line with agreed payment terms and use scheduled payment runs to manage outgoing cash. Paying too early ties up working capital, while paying late can damage supplier relationships. Take advantage of early-payment discounts when the savings outweigh the benefit of holding on to the cash. 

Inventory 

Excess stock ties up working capital, while shortages can delay orders and affect customer service. To maintain the right balance, set reorder points and minimum and maximum stock levels for each item. Review slow-moving inventory regularly and adjust purchasing accordingly. 

Debt 

Borrowing can support business growth, but repayments reduce the cash available for day-to-day operations. Choose financing that suits the business's needs. For example, an overdraft or invoice finance can help cover short-term cash flow gaps. Ensure repayments remain affordable based on projected cash flow. 

Risk 

Identify factors that could disrupt cash flow, such as a major customer delaying payment, a supplier increasing prices or an unexpected rise in operating costs. Assess their potential impact and develop contingency plans, such as maintaining cash reserves to cover unexpected shortfalls. A structured approach to risk management can help businesses identify and prepare for potential risks. 

Assets 

Review fixed assets, such as property, vehicles and equipment, to identify anything that is underused or no longer essential to operations. Selling surplus assets can release cash, while leasing rather than purchasing certain assets can help avoid large upfront costs. 

Review working capital metrics monthly and adjust your approach as business needs and market conditions change. 

Working capital management with OneAdvanced Financials 

OneAdvanced Financials supports working capital management by connecting core finance processes. Accounts receivable and credit management help teams manage customer balances and collections, while accounts payable and Purchase Invoice Automation streamline supplier invoice processing. 

Inventory management provides visibility of stock values, while asset management supports the tracking and management of capital assets throughout their lifecycle. Financial planning, cash flow forecasting and real-time dashboards help finance teams monitor performance, plan ahead and make informed decisions. 

Ready to improve visibility and control over your working capital with Financials? Get in touch with our team to learn more.