Operating Cash Flow Formula (Indirect Method Walkthrough)
Build operating cash flow from net income with non-cash adjustments and working capital changes. Link OCF to COGS, receivables, and payables timing.
Bottom line
Operating cash flow (OCF) shows cash generated by core operations before financing and investing flows. The indirect method starts at net income and walks through balance sheet changes. Pair this with COGS formula for margin inputs and working capital ratio for liquidity context.
Is it right for you?
- Start from net income, not revenue
- Add back non-cash charges (depreciation, amortization)
- Adjust for working capital: AR, inventory, AP
- Reconcile to the cash flow statement line labeled operating activities
- Compare OCF to capex before calling the business "cash rich"
Indirect method skeleton
OCF ≈ net income + non-cash expenses − increases in working capital + decreases in working capital.
Increases in accounts receivable or inventory consume cash. Increases in accounts payable temporarily preserve cash.
The sign convention trips teams up: an AR increase subtracts from OCF because you recognized revenue without collecting cash.
Worked example (illustrative)
| Line | Amount |
|---|---|
| Net income | $120,000 |
| Depreciation add-back | $18,000 |
| Increase in accounts receivable | ($35,000) |
| Increase in inventory | ($12,000) |
| Increase in accounts payable | $22,000 |
| Operating cash flow | $113,000 |
The receivable build here might trace to slower collections; check DSO formula. Inventory growth may tie to purchasing covered in COGS formula.
What OCF does not tell you alone
Large positive OCF with heavy capex can still leave the bank account flat.
Stretching payables boosts OCF temporarily but can damage supplier terms.
Card programs and AP automation change timing, not necessarily profit. Compare tools in best expense management software and model AP payback in AP automation ROI calculator.
FAQ
Is OCF the same as EBITDA?
No. EBITDA ignores working capital swings OCF captures.
Can OCF be negative while net income is positive?
Yes, when receivables or inventory grow faster than payables.
Where does free cash flow fit?
See free cash flow formula for OCF minus capex.
How do supplier discounts affect OCF?
Paying early for 2/10 net 30 uses cash sooner; math in early payment discount (2/10 net 30).