Operating cash flow

Definition

Operating cash flow, often abbreviated to OCF, measures the amount of cash a business generates from its normal day-to-day operating activities over a specific period.

What it means

Operating cash flow shows whether a company’s core operations are generating enough cash to sustain the business, pay expenses and support growth. It focuses on actual cash movement rather than accounting profit.

A positive operating cash flow generally indicates that a company can fund its operations without relying heavily on external financing, while a negative operating cash flow may signal operational or liquidity challenges.

How it’s calculated

Operating cash flow is typically calculated by adjusting net income for:

• Non-cash expenses such as depreciation and amortisation
• Changes in working capital, including receivables, payables and inventory

A simplified formula is:

Operating Cash Flow = Net Income + Non-Cash Expenses ± Changes in Working Capital

Example

A business reports:

• Net income of £500,000
• Depreciation of £80,000
• An increase in accounts receivable of £30,000

Its operating cash flow would be:

£500,000 + £80,000 − £30,000 = £550,000

This means the company generated £550,000 in cash from its operations during the period.

Why operating cash flow matters

• Indicates the financial health of core business operations
• Helps lenders and investors assess liquidity and sustainability
• Supports debt repayment, reinvestment and expansion plans

Important to note

Operating cash flow differs from profit because it excludes non-cash accounting items and reflects the timing of actual cash receipts and payments.

In practice, operating cash flow is one of the most important indicators of a company’s ability to generate sustainable cash from everyday business activities.