What Is a Cash Flow Statement? (with Example)

A cash flow statement is a financial report that shows how much actual cash moved into and out of a business over a period of time. It explains the change in your cash balance from the start of the period to the end, grouped by the kind of activity that produced each movement.

Why cash flow is its own report

A business can look profitable on paper and still run short of cash. Sales booked but not yet collected, inventory bought up front, and loan repayments all affect your bank balance without necessarily showing up the same way in profit. The cash flow statement strips away those timing effects and answers a direct question: where did the cash come from, and where did it go?

Profit is an accounting estimate that depends on judgment — how you spread the cost of equipment over time, when you recognize a sale, how you treat unpaid invoices. Cash is harder to argue with. Either it arrived in the account or it did not. That is why the cash flow statement is often the report owners turn to when they want to understand the day-to-day health of the business rather than a year-end profit figure. The U.S. Securities and Exchange Commission describes it as one of the core financial statements investors review — see the beginners' guide to financial statements.

The three sections

A cash flow statement is divided into three parts. Together they account for every dollar of cash movement during the period.

1. Operating activities

This section covers cash generated or used by the day-to-day running of the business — cash from customers, minus cash paid to suppliers, employees, and for operating expenses. It is the section most directly tied to whether the core business produces cash on its own, without relying on loans or asset sales to stay afloat. Over the long run, a business generally needs this section to be positive, because operating cash is what funds everything else.

2. Investing activities

This section covers cash spent on or received from longer-term assets. Buying equipment or property uses cash here; selling an old asset brings cash in. Steady spending in this section often reflects a business investing in its own capacity.

3. Financing activities

This section covers cash exchanged with owners and lenders: money raised by taking a loan or from investors, and money paid out as loan repayments, dividends, or owner withdrawals. It shows how the business is funded and how it returns money to the people who put capital in.

When you add the net cash from all three sections to your opening cash balance, you arrive at your closing cash balance — the same figure your bank statement shows at period end.

How it differs from the P&L and balance sheet

These three reports describe different things:

• Profit and loss (income statement) measures profitability over a period using accrual accounting. It records revenue when earned and expenses when incurred, regardless of when cash changes hands. A sale on credit counts as revenue immediately, even though no cash has arrived.
• Balance sheet is a snapshot at a single point in time, listing what the business owns (assets), owes (liabilities), and the owner's equity.
• Cash flow statement tracks actual cash movement over the period, reconciling the difference between profit and the real change in cash.

The gap between profit and cash is exactly why the cash flow statement exists. A profit figure can include sales not yet collected; the cash flow statement shows only what was actually received and paid. Read together, the three reports answer different questions: the P&L asks whether the business is profitable, the balance sheet asks what it is worth at a moment, and the cash flow statement asks whether it actually has the cash to operate.

A simple example

The numbers below are round and illustrative, meant only to show how the sections add up.

Suppose a small business starts the month with $10,000 in cash. During the month:

Operating activities

• Cash collected from customers: +$30,000
• Cash paid to suppliers and staff: −$22,000
• Net cash from operating activities: +$8,000

Investing activities

• Purchased a new laptop and equipment: −$3,000
• Net cash used in investing activities: −$3,000

Financing activities

• Repaid part of a business loan: −$2,000
• Net cash used in financing activities: −$2,000

Now total the three sections:

• $8,000 (operating) − $3,000 (investing) − $2,000 (financing) = +$3,000 net change in cash

Apply that to the opening balance:

• Opening cash $10,000 + net change $3,000 = closing cash $13,000

The closing figure of $13,000 is what the business should see in its bank account at month-end. If it does not match, that difference is a signal to investigate — a transaction recorded in the wrong period, a missing entry, or an uncleared payment. Notice too that this business was cash-positive overall even though it spent money on equipment and loan repayment, because operating activities brought in enough to cover both. A different month with weaker collections could just as easily show a net decline in cash, which is exactly the kind of trend the statement is built to surface.

You can walk through a fuller version of this in the cash flow statement example.

Tying it back to your bank statement

Because the closing line of a cash flow statement should equal your real cash on hand, your bank statement is the natural place to check it against. Comparing the two is closely related to bank reconciliation, where you line up your records against what the bank actually processed and explain any gaps.

That comparison is far easier once your statement is in a spreadsheet, with each transaction on its own row. You can turn a PDF statement into clean, sortable rows with the free bank statement converter, then group the transactions into operating, investing, and financing buckets to build the statement yourself.

In short

A cash flow statement reports the real movement of cash across operating, investing, and financing activities, and reconciles your opening balance to your closing balance. Read alongside the P&L and balance sheet, it gives a grounded view of whether a business is actually generating the cash it needs to keep running.