Cash Flow Calculator
Calculate net cash flow from the three sections of the cash flow statement — operating, investing, and financing activities. Net cash flow shows whether the business's cash position is growing or shrinking over a period.
What Is Cash Flow?
Cash flow is the movement of money in and out of a business over a period. The cash flow statement divides this into three sections: operating (core business activities), investing (buying/selling assets), and financing (raising money and paying it back).
Net cash flow is the sum of these three sections. It shows the actual change in the cash balance. A business can be profitable on paper but cash-negative — that is why cash flow matters more than profit for short-term survival. Profitable companies have gone bankrupt from cash flow problems; cash-generating businesses rarely do.
Cash Flow Formula
Net Cash Flow = CFO + CFI + CFF
- CFO (Operating) — cash generated from core business: sales collected minus expenses paid, working capital changes
- CFI (Investing) — cash from buying or selling long-term assets: capex, acquisitions, asset sales (usually negative for growing businesses)
- CFF (Financing) — cash from debt, equity issuance, dividends, and share buybacks
Free Cash Flow = CFO + CFI (roughly — the cash available after maintaining and growing the asset base).
Net cash flow should match the change in the cash balance on the balance sheet from one period to the next.
Worked Example
A business has $100,000 CFO, −$50,000 CFI, and $25,000 CFF:
Net cash flow = $100,000 + (−$50,000) + $25,000 = $75,000
Free cash flow = $100,000 + (−$50,000) = $50,000
Cash position = Positive — the business is generating more cash than it uses
Interpretation: the business generates $100K from operations, spends $50K on capital expenditures, and raises $25K in financing — ending with a $75K cash increase. The $50K free cash flow is available for debt repayment, dividends, or reinvestment.
How to Interpret Cash Flow
- Positive CFO (strong) — the business generates cash from operations. This is the most important sign of financial health.
- Negative CFO (weak) — the business is consuming cash from operations. Unless temporary (rapid growth), this is a red flag.
- Negative CFI (typical) — normal for growing businesses investing in assets. Healthy if funded by CFO.
- Positive CFI (unusual) — either selling assets (warning) or making acquisitions with cash (can be strategic).
- Positive CFF (mixed) — raising money. Good for growth, but debt-heavy financing is risky.
- Positive net cash flow (healthy) — cash balance is growing. Generally positive, but check if it is sustainable.
Frequently Asked Questions
What is the difference between cash flow and profit?
Profit is an accounting measure — revenue minus expenses, recognized when earned or incurred. Cash flow is the actual movement of money — when cash is received or paid. A business can be profitable but cash-negative (customers paying slowly, inventory buildup) or cash-positive but unprofitable (selling assets, delaying payments). Both matter, but cash flow determines short-term survival.
What is a good net cash flow?
Positive net cash flow is good — the business is adding to its cash reserves. But the composition matters: cash flow from operations is the most valuable kind; cash from financing (borrowing) or selling assets is less sustainable. A business with positive net cash flow but negative CFO is at risk. Focus on CFO as the leading indicator.
What is the difference between CFO and free cash flow?
CFO (cash flow from operations) is the cash generated by core business activities. Free cash flow (FCF) is CFO minus capital expenditures (CFI). FCF is the cash left over for debt repayment, dividends, share buybacks, or reinvestment. FCF is more useful for valuation because it represents the cash actually available to capital providers. CFO is more useful for assessing operational health.
Why is CFO the most important cash flow number?
Because operations are the only sustainable source of cash. Financing (borrowing) must eventually be repaid, and asset sales reduce the operating base. A business that relies on financing to fund operations is in danger — lenders will eventually stop lending. A business that generates strong positive CFO can fund itself, pay dividends, and reduce debt. That is what makes a business truly healthy.
Can net cash flow be negative?
Yes — negative net cash flow means the business spent more cash than it brought in. This is common in growing businesses (investing heavily in capex and working capital) and in losing businesses. Short-term negative cash flow is fine if funded by financing; prolonged negative cash flow without a clear path to positive is dangerous.
Does this calculator include all cash flows?
It uses the three main categories — operating, investing, and financing — which cover all cash flows in a standard cash flow statement. Within each category, you should include all relevant items. For a full reconciliation, ensure your inputs match the line items on your actual cash flow statement. If you are building a forecast, use realistic assumptions for each category.