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For small businesses, cash may be king — but analyzing cash flow might feel like chasing a moving target. At its most basic level, cash flow is calculated by subtracting cash paid out for operating expenses from cash collected from customers. But that figure only gives you cash flow from operations, which is just one part of the picture. To see all your sources and uses of cash, you may also want to look at cash from investments and financing activities.
Once you know how to calculate each of these activities, you may be able to build a complete cash flow statement — a snapshot of how cash moved through your business during a given period. From there, you may develop a cash-flow forecast, detect potential shortfalls, and plan for growth. Here’s a run-down of the cash flow formulas business owners may use to help conduct a cash-flow analysis.
How to Calculate Operating Cash Flow (OCF)
Operating cash flow (OCF) may indicate how much cash a company generates from operations — the day-to-day activities that keep things running. This number may help assess whether your business could sustain itself and maintain liquidity without relying on outside financing. It may also be an important metric for cash-flow management and a core component of any cash-flow statement.
There are two ways to calculate OCF: the direct method and indirect method.
Direct Operating Cash-Flow Formula
To calculate operating cash flow using the direct method, use this formula:
Operating Cash Flow = Cash Received From Customers – Cash Paid for Operating Expenses
This covers the essentials. In practice, you may also have other operating inflows and outflows — like interest received — but for some small businesses, customer payments and operating expenses may account for most of the cash moving through operations.
If you run a small business on a cash basis, the direct calculation may feel the most intuitive because you’re likely tracking these movements from day to day.
Indirect Operating Cash-Flow Formula
The direct method may appear straightforward, but tracking every individual cash transaction could seem tedious — especially if your business uses accrual accounting, which separates when transactions are recognized from when cash actually moves. In this case, the indirect method may require less transaction-level tracking because it derives cash flow from financial statements you've already prepared.
The indirect operating cash-flow formula is:
Operating Cash Flow = Net Income + Non-Cash Expenses − Increase in Working Capital
Non-cash expenses are expenses that didn’t actually use cash, like depreciation. Changes in working capital capture the timing differences between when you recorded revenue or expenses and when cash actually changed hands — specifically shifts in accounts receivable, accounts payable, and inventory. For example, an increase in accounts receivable may mean you recorded revenue but haven't collected the cash yet, so you subtract that increase from net income.
Operating Cash-Flow Example
Using the indirect formula, if Company X had for the 2025 fiscal year:
- $250,000 net income
- $100,000 in non-cash expenses (primarily depreciation on equipment)
- $50,000 increase in working capital (meaning more cash is tied up in inventory and receivables as the business grows)
Operating cash flow would be $300,000 ($250,000 + $100,000 − $50,000).
In other words, the company’s operations generated $300,000 in actual cash during the period.
How to Calculate Cash Flow From Investing Activities (CFI)
Cash flow from investing activities (CFI) tracks cash moving in and out through the purchase or sale of long-term assets (those held for more than 12 months), such as property, equipment, or marketable securities. This may indicate whether cash is being invested in long-term assets or generated from asset sales.
Cash Flow From Investing Activities Formula
To calculate CFI, add up cash received from selling assets, then subtract cash spent on acquiring them.
Cash Flow from Investing Activities = Cash from Asset Sales − Cash Spent on Asset Purchases
Cash Flow from Investing Activities Example
For the same period, if Company X had:
- $50,000 from selling old manufacturing equipment
- $150,000 spent purchasing new machinery to expand production capacity
Cash flow from investing activities would be −$100,000 ($50,000 – $150,000). The negative number indicates a net outflow, meaning Company X invested more cash in long-term assets than it received from sales — a common scenario for growing businesses.
How to Calculate Cash Flow From Financing Activities (CFF)
Cash flow from financing activities (CFF) tracks how cash moves between the company and its owners, creditors, and investors. Positive CFF may mean you’re raising capital, while negative CFF may indicate you’re paying off loans or making distributions to owners —both of which may be signs of financial strength depending on your business stage.
Cash Flow From Financing Activities Formula
To calculate CFF, start with cash brought in by issuing debt or equity, then subtract cash paid out through debt repayments, dividends, or buybacks.
Cash Flow from Financing Activities = Cash from Issuing Debt or Equity − Debt Repayments − Dividends Paid − Stock Buybacks
Note that under GAAP (Generally Accepted Accounting Principles), debt repayments include principal only, with interest payments normally classified as operating expenses.
Cash Flow From Financing Activities Example
Continuing the Company X example, let’s assume the business had:
- $150,000 in cash from taking out a business loan to fund expansion
- $50,000 in debt repayments on existing loans
- $20,000 in distributions paid to owners
Company X brought in $80,000 in cash through financing activities during the period ($150,000 – $50,000 – $20,000).
How to Calculate Free Cash Flow (FCF)
Free cash flow (FCF) is the cash left over after your business has covered its operating expenses and capital expenditures (purchases of property, equipment, and other fixed assets). Unlike other metrics, FCF isn't a line item on your cash flow statement — it's a separate calculation. But it's a useful one: It may indicate how much cash you have available to use at your discretion, whether that’s funding growth, paying down debt, distributing to owners, or building reserves.
Free Cash-Flow Formula
One way to calculate free cash flow is to start with your operating cash flow and subtract capital expenditures.
Free Cash Flow = Operating Cash Flow − Capital Expenditures
You can also calculate free cash flow using this expanded formula that shows all the components:
Free Cash Flow = Net Income + Non-Cash Expenses − Increase in Working Capital − Capital Expenditures
Either way, the result tells you how much cash your business actually has at its disposal after maintaining and investing in assets.
Free Cash-Flow Example
If Company X had:
- $300,000 operating cash flow
- $50,000 in capital expenditures (the net amount spent on new equipment from the investing activities example)
Free cash flow would be $250,000 for the period ($300,000 – $50,000). In other words, Company X had $250,000 in cash available to use as it sees fit.
How to Calculate Net Cash Flow
Net cash flow is the difference between all cash coming into your business and all cash going out over a given period. One indicator of a company’s financial position, this number could show whether you’re generating enough liquidity to cover expenses, invest in growth, and sustain long-term financial health.
Net Cash-Flow Formula
Use this formula to calculate net cash flow:
Net Cash Flow = Total Cash Inflows – Total Cash Outflows
You may also calculate net cash flow by adding together operating cash flow, cash flow from investing activities, and cash flow from financing activities:
Net Cash Flow = Operating Cash Flow + Cash Flow from Investing Activities + Cash Flow from Financing Activities
Net Cash-Flow Example
Now let’s bring together all of Company X’s cash-flow activities for the period:
- $300,000 operating cash flow (from day-to-day operations)
- −$100,000 cash flow from investing activities (net investment in new equipment)
- $80,000 cash flow from financing activities (net cash from loans and debt payments)
Net cash flow would be $280,000 ($300,000 + –$100,000 + $80,000). This means Company X’s overall cash position increased by $280,000 during the fiscal year. The business generated positive cash from operations, invested in growth by purchasing new equipment, and brought in additional financing – resulting in a net positive cash flow.
Positive Cash Flow May Be One Sign of Business Success
Knowing how to calculate cash flow may be more than an accounting exercise — it could be a window into your business’s health. Positive cash flow over time could mean more money is coming in than going out, a sign that your business may be generating more cash inflows than outflows.
Calculating Cash Flow FAQ
What is cash flow in business?
Cash flow is the movement of money in and out of your business over a set period. Cash may come in from sales, loans, or investments, and may go out through expenses like rent, payroll, and supplies. Positive cash flow means more money is coming in than going out, which could be a sign a business may be able to cover its obligations and invest in growth.
Why is cash flow important for business success?
Cash flow could help indicate whether sufficient cash is available to pay bills, cover payroll, and handle unexpected expenses. This may be important because profit on your income statement doesn’t always mean cash in the bank — a business could be profitable on paper while running out of cash if customers haven’t paid yet or if it has invested heavily in inventory or equipment. Tracking cash flow could help you identify potential shortfalls, plan for growth, and make informed financial decisions.
How do I calculate cash flow?
One simple approach to calculating cash flow is to subtract cash paid out for operating expenses from cash received from customers. For a fuller picture, consider calculating cash flow from operations, financing, and investing activities, then add them together to get your net cash flow.
What is cash-flow analysis?
Cash-flow analysis is the process of reviewing your cash inflows and outflows to understand your business’s financial health. It may help you see where your money is going, identify trends, and make more informed decisions about spending, saving, and investing.
How can I improve my cash flow?
Here are a few strategies to potentially improve cash flow:
- Invoice promptly and follow up on late payments.
- Negotiate better terms with suppliers.
- Cut unnecessary expenses.
- Build a cash reserve for slow periods.
In addition, regularly reviewing your cash flow could help you identify potential issues before they potentially affect operations.
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