Free Cash Flow: What It Is and How to Calculate It

The free cash flow formula

Free cash flow equals cash from operations minus capital expenditures. Cash from operations comes from your cash flow statement.

The standard formula is simple:

Free cash flow = operating cash flow minus capital expenditures

Operating cash flow is the cash generated by running the business, after paying suppliers, staff, rent and taxes, and after changes in receivables, payables and inventory. Capital expenditures are purchases of equipment, vehicles, buildouts and other long-lived assets.

A rougher version starts from net profit, adds back non-cash items like depreciation, adjusts for working capital changes and subtracts capital spending. Both ways land in the same place when the books are right. See what goes on a cash flow statement for where each number comes from.

A worked example

A shop with $12,000 of net profit can have negative free cash flow if it buys equipment and builds inventory in the same month.

All figures are examples. Profit looks healthy, yet the business burned cash because customers owed more, stock grew and equipment was bought. Loan principal payments would come on top, since they sit in financing, not operations.

Why it differs from profit

Profit follows accounting rules about when income and costs are recorded. Free cash flow follows the actual movement of money, including capital purchases.

Three things create the gap:

• Timing of payments. Sales on credit count as revenue now but cash later.
• Non-cash costs. Depreciation lowers profit but does not take cash out.
• Capital purchases and inventory. They use cash without appearing as expenses right away.

This is why owners sometimes say, "We made money, so where did it go?" Our article on cash flow vs. profit and the guide on cash flow and profit go deeper.

What good and bad look like

Steady positive free cash flow means the business funds itself. Repeated negative free cash flow means it relies on outside money or reserves.

Negative free cash flow is not always bad. A business investing in a second truck or a new location may run negative for a period on purpose. The key is whether the investment will produce enough extra cash later, and how you are covering the gap now.

Warning signs:

• Negative free cash flow in months without major investment.
• Receivables or inventory rising faster than sales.
• Using new borrowing to cover ordinary expenses.

See negative cash flow for causes and fixes.

How to improve free cash flow

Collect faster, hold less idle inventory, negotiate payment terms, time big purchases and keep margins healthy.

Practical levers:

1. Invoice sooner and chase early. See how to send invoices that get paid faster.
2. Trim slow stock. Money on a shelf does not pay bills. See the inventory turnover ratio.
3. Ask suppliers for longer terms if your payment history is solid.
4. Time purchases. Buy equipment when cash is strong, not at your leanest month.
5. Raise prices where margins are thin.

Even a small change in how fast customers pay can free thousands of dollars of cash.

How lenders and buyers use it

Free cash flow shows how much payment a business can carry. Funders compare it with the proposed payments to judge risk.

Debt service coverage looks at how many times your cash flow covers loan payments. A business with $10,000 of monthly cash available and $4,000 of payments has comfortable cover. One with $4,500 has little room if sales dip. See understanding debt service coverage ratio and how to stress test payments if revenue drops.

Buyers of a business also look at free cash flow, since it shows what the owner can actually take home.

Matching funding to your cash flow

Choose a product whose payment pattern fits how cash arrives. Seasonal or uneven income may suit payments that move with sales.

If your free cash flow is steady, fixed payments from a term loan may be simple to plan. If revenue swings, revenue-based financing repays more when sales are high and less when they are low. A business line of credit helps with short gaps you expect to repay quickly.

ROI Funder considers 500+ FICO, 6+ months in business and $20,000+ monthly revenue, and shows true cost, payback period and monthly-equivalent payments before you sign. Applying uses a soft credit pull with no obligation to accept.

Track the figure monthly and also as a trailing twelve-month total. One month can be distorted by a large equipment purchase or an annual insurance payment, while the trailing figure shows the underlying pattern and is closer to what a lender or buyer would look at.