What is working capital? Formula and how to calculate

Published Thursday 12 March 2026

Table of contents

• What is working capital?
• The importance of working capital in business
• How to calculate working capital
• Working capital examples in different businesses
• What is net working capital?
• Working capital vs cash flow: what's the difference?
• How to manage your working capital
• Improve your working capital with Xero
• FAQs on working capital

Key takeaways

• Calculate your working capital by subtracting current liabilities from current assets to determine if you have enough liquid resources to cover short-term expenses and keep operations running smoothly.
• Monitor your working capital regularly as positive working capital means you can pay bills and reinvest in growth, while negative working capital signals potential cash flow problems that need immediate attention.
• Improve your working capital position by speeding up invoicing and customer payments, negotiating longer payment terms with suppliers, and maintaining optimal inventory levels to avoid tying up excess cash.
• Use accounting software to automate invoicing, track expenses in real time, and access financial reports that help you maintain healthy working capital as your business grows.

What is working capital?

Working capital is the difference between your business's current assets and current liabilities. It shows how much cash and liquid resources you have available to cover short-term expenses and keep operations running smoothly.

Current assets and liabilities

Understanding the components of working capital helps you track your financial position accurately.

Current assets are resources you can convert to cash within 12 months:

• Cash: includes funds in bank accounts and on hand
• Accounts receivable: includes money customers owe you
• Inventory: includes stock available for sale
• Prepaid expenses: includes costs paid in advance
• Short-term investments: includes assets easily converted to cash
• Tax refunds: includes expected returns from tax authorities

More about current assets

Current liabilities are obligations you must pay within 12 months. According to International Financial Reporting Standards (IFRS), a liability is classified as current when it is due to be settled within twelve months after the reporting period.

• Accounts payable: includes money you owe suppliers
• Loan payments: includes principal and interest due within the year
• Deferred revenue: includes payments received for services not yet delivered
• Accrued expenses: includes wages, bank fees, and other costs owed but not yet paid

More about current liabilities

The importance of working capital in business

Working capital matters because it reveals whether your business can pay its bills, handle unexpected costs, and invest in growth.

Working capital affects several aspects of your business:

• Operational health: shows whether you can cover day-to-day expenses
• Financial resilience: indicates your ability to weather slow seasons or market shifts
• Growth potential: reveals whether you have funds to reinvest in the business
• Credibility: lenders and investors use working capital to assess your financial stability

Positive vs negative working capital

• Positive working capital: current assets exceed current liabilities, meaning your business can pay its bills and has surplus funds to reinvest in growth
• Negative working capital: current liabilities exceed current assets, meaning your business may struggle to meet its debts without borrowing or raising funds, and ongoing negative working capital signals financial trouble
• Neutral working capital: current assets and liabilities are roughly equal, which works if sales are steady but leaves little buffer for unexpected costs or reinvestment

Very high working capital isn't always ideal either. It may suggest your business is holding too much cash instead of investing in improvements or innovation.

How to calculate working capital

To calculate working capital:

1. Identify your current assets for the next 12 months.
2. Identify your current liabilities for the next 12 months.
3. Subtract your current liabilities from your current assets.

Accounting software makes this simple. Pull your current assets and liabilities from your balance sheet or financial reports, then apply the formula below.

Learn more about Xero financial reports.

The working capital formula

A working capital formula example

A retail florist calculates their working capital using these steps:

1. Add up current assets: cash, inventory, accounts receivable, and other liquid assets for the next 12 months. Total: R100,000.
2. Add up current liabilities: accounts payable, loan payments, and accrued expenses for the next 12 months. Total: R75,000.
3. Apply the formula: R100,000 − R75,000 = R25,000.

Result: The florist has R25,000 in positive working capital, meaning they can cover short-term obligations and have funds available for reinvestment.

Working capital vs working capital ratio

Working capital and working capital ratio measure the same inputs differently:

• Working capital: current assets minus current liabilities (measured in currency)
• Working capital ratio: current assets divided by current liabilities (measured as a ratio)

Working capital tells you the currency amount available. The ratio tells you how many times your assets can cover your liabilities. Learn more about the working capital ratio.

Working capital examples in different businesses

Working capital needs vary by industry. Businesses with large inventories, long project timelines, or seasonal revenue cycles typically need more working capital than service-based businesses with steady cash flow.

Working capital requirements differ across business types.

Working capital in construction and manufacturing

Construction and manufacturing businesses often face irregular cash flow due to long project timelines. For these industries, it's crucial to distinguish net assets that are circulating as working capital from those used in long-term operations to maintain financial clarity. Working capital covers upfront costs for materials, subcontractors, and labour before payments come in.

A building materials manufacturer calculates their working capital using these steps:

1. Add up current assets: cash (R100,000) + accounts receivable (R200,000) + inventory (R300,000) = R600,000
2. Add up current liabilities: accounts payable (R150,000) + short-term loans (R100,000) + accrued expenses (R50,000) = R300,000
3. Apply the formula: R600,000 − R300,000 = R300,000

Result: The manufacturer has R300,000 in positive working capital, providing a buffer against market uncertainty and delayed customer payments.

Working capital in service businesses

Service businesses typically need less working capital than product-based industries because they don't hold inventory.

Service businesses should focus on these key considerations:

• Accounts receivable: tends to be higher because clients are invoiced after work is completed
• Payroll: represents the largest ongoing expense, requiring steady cash flow
• Operating costs: include office expenses and project costs that need coverage between client payments

Working capital in retail

Retail, wholesale, and hospitality businesses hold significant inventory and often need more working capital to stock up before peak seasons.

To keep working capital healthy, balance your inventory levels with expected sales. Overstocking ties up cash, while understocking risks lost revenue.

What is net working capital?

Net working capital measures operational efficiency by excluding cash and debt from the standard working capital calculation. This focuses on items like trade payables and accrued costs, which are part of the working capital used in a business's normal operating cycle. This focuses purely on how well your business manages day-to-day operations.

Net working capital differs from standard working capital in several ways:

• Excludes cash: removes cash holdings from current assets
• Excludes debt: removes loans and borrowings from current liabilities
• Focus: measures operational efficiency rather than overall liquidity

Net working capital is particularly useful for businesses in specific situations:

• Expanding businesses: assessing operational health during growth
• Low-margin industries: retail, manufacturing, and distribution where efficiency drives profitability
• Long-term planning: evaluating sustainable operational performance

The net working capital formula

Let's look again at the florist. Suppose their current assets include a cash amount of R20,000, and their current liabilities include loan debts of R10,000. The new formula for their net working capital is R80,000 (R100,000 − R20,000) − R65,000 (R75,000 − R10,000) = R15,000.

Working capital vs cash flow: what's the difference?

Working capital and cash flow measure different aspects of your finances. Understanding the distinction helps you manage both effectively.

• Working capital: the difference between current assets and liabilities, showing funds available after covering upcoming costs
• Cash flow: the movement of money in and out of your business over a specific period, showing cash on hand

Cash flow tracks real-time money movement. Working capital provides a broader view of short-term financial health, including liquid assets like inventory and receivables.

The image below shows Xero's short-term cash flow projection, displaying money in and out over 90 days.

How to manage your working capital

Managing your working capital helps you avoid cash shortages, reduce borrowing costs, and free up funds for growth. These practical strategies can improve your working capital position.

Manage your inventory

Effective inventory management frees up cash and reduces waste.

• Maintain optimal stock levels: avoid tying up cash in excess inventory while keeping enough on hand to meet demand
• Accelerate inventory turnover: offer promotions or discounts on slow-moving stock to free up cash faster
• Automate tracking: use inventory management software to monitor stock in real time, forecast demand, and trigger automatic reorders

Learn more in Xero's inventory management guide or explore Xero's inventory management features.

Control your expenses

Reducing unnecessary spending improves your working capital position.

• Review expenses regularly: identify areas to reduce costs without affecting quality or operations
• Prioritise growth spending: cut non-essential expenses and redirect funds toward activities that drive revenue
• Streamline processes: adopt lean practices to reduce waste and improve efficiency

Learn more about tracking business expenses.

Monitor your cash flow

Regular cash flow monitoring helps you anticipate and address shortfalls.

• Track inflows and outflows: review cash movement regularly to anticipate shortages or surpluses
• Build a cash reserve: set aside a portion of profits as a buffer for lean periods or unexpected expenses

Invest in software tools to streamline your operations

Accounting software helps you manage working capital by automating routine tasks and providing real-time financial visibility. For instance, one survey of finance leaders found that 79% reduced month-end close time after adopting such tools, improving efficiency.

Xero supports better working capital management in several ways:

• Automate invoicing: generate and send invoices automatically, track payment status, and follow up on overdue accounts without manual effort
• Enable faster customer payments: send automatic reminders and offer multiple payment options to reduce delays
• Track expenses: monitor spending in real time to control costs and spot issues early
• Access anywhere: manage finances from any device with an internet connection, so you can respond to cash flow issues immediately

These features give you greater control over your finances and help you maintain healthy working capital as your business grows.

Learn more about managing working capital with Xero.

Improve your working capital with Xero

Xero accounting software helps you manage working capital by tracking assets and liabilities, streamlining invoicing, and providing real-time financial insights.

With Xero, you can:

• Automate invoicing and payments: reduce delays and manual errors
• Track inventory: monitor stock levels and turnover in real time
• Access real-time insights: see your financial position at a glance
• Monitor expenses: track spending and identify savings opportunities
• Forecast cash flow: plan ahead with accurate projections

Take control of your working capital today. Get one month free and see how Xero can help you manage your finances with confidence.

FAQs on working capital

Find answers to common questions about working capital below.

What is a good working capital ratio for small businesses?

A good working capital ratio for small businesses typically falls between 1.2–2.0. This range suggests a company has enough current assets to cover its liabilities while making effective use of its resources. A ratio below 1.0 means your liabilities exceed your assets, signalling potential cash flow problems.

Industry matters: service businesses generally need lower ratios than retailers or manufacturers with significant inventory.

How can I improve working capital ratio?

Four ways to improve your working capital ratio:

• Speed up invoicing: send invoices immediately to reduce payment turnaround time
• Negotiate supplier terms: request longer payment windows to slow cash outflows
• Offer early payment discounts: encourage customers to pay sooner with small incentives
• Reduce overheads: cut non-essential spending to increase available assets

What happens if my working capital ratio is too low?

A low working capital ratio means your business may struggle to cover short-term debts. If this continues, you risk late payment penalties, damaged supplier relationships, and potential insolvency. Address the issue by speeding up receivables, negotiating better payment terms, or reducing non-essential expenses.

What is a working capital loan?

A working capital loan is short-term financing used to cover day-to-day operating expenses when cash flow falls short. It's typically a last resort after other improvement strategies haven't worked.

Before taking on new debt, consult a financial adviser to explore all options and understand the impact on your business.

Is working capital the same as liquidity?

Working capital and liquidity are related but measure different aspects of financial health:

• Liquidity: measures how easily you can convert assets to cash to cover immediate costs
• Working capital: measures the funds remaining after covering short-term obligations

Both indicate financial health, but liquidity focuses on speed of access while working capital focuses on the surplus available.