Cash Flow

What Is Cash Flow?

Cash flow is the net amount of cash moving into and out of a business, household, or investment over a given period. Money coming in, such as customer payments or loan proceeds, is a cash inflow. Money going out, such as payments to suppliers, employees, or lenders, is a cash outflow. The difference between the two is the net cash flow for that period. A positive figure means more cash came in than went out, and a negative figure means the opposite.

Cash flow is often discussed alongside net income, but the two measure different things. Net income is calculated under accrual accounting, which records revenue and expenses when they are earned or incurred, not necessarily when cash changes hands.

The Three Types of Cash Flow

Companies typically report cash flow in three categories, shown on the cash flow statement:

• Operating cash flow: cash generated or used by the core business, such as sales receipts minus operating payments.
• Investing cash flow: cash spent on or received from long-term assets, such as buying equipment or selling a business unit.
• Financing cash flow: cash exchanged with owners and lenders, such as borrowing, repaying debt, issuing or buying back shares, or paying dividends.

Analysts often subtract spending on property and equipment, known as capital expenditures, from operating cash flow to arrive at free cash flow. This figure represents the cash left over after maintaining and expanding the asset base.

Why Cash Flow Matters to Investors

Profit can look healthy while a business struggles to pay its bills. Revenue may be recorded before cash is collected, and non-cash charges such as depreciation reduce reported profit without using any cash. Tracking cash flow helps investors see whether a company generates enough cash to fund operations, repay debt, and return money to shareholders. Persistently negative operating cash flow can signal trouble even when reported earnings are positive.

Cash flow is also useful in personal finance. A household's cash flow is its income minus its spending over a period, and a consistently positive figure leaves money available for saving or investing.

Cash flow analysis has limits. A single period can be distorted by the timing of payments, one-time transactions, or seasonal patterns, so investors usually look at trends across several periods rather than one result.