Operating Cash Flow Calculator
Real cash from operations.
Calculate operating cash flow from net income, depreciation, and working capital change — the cash version of the income statement bottom line.
What this tool does
Operating cash flow equals net income plus depreciation and amortisation, adjusted for working capital changes. This calculator takes your net income, depreciation and amortisation figures, and working capital movement, then returns your operating cash flow — the actual cash generated by core business operations. Net income has the largest influence on the result, though significant working capital swings can meaningfully shift the final figure. The output illustrates how a profitable income statement can differ from the cash your business actually holds after day-to-day operations. This calculation follows the indirect method and does not account for financing activities, tax payments, capital expenditure, or changes in other balance sheet items beyond working capital. Use this to model cash dynamics across different scenarios or periods.
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Formula Used
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Disclaimer
Results are estimates for educational purposes only. They do not constitute financial advice. Consult a qualified professional before making financial decisions.
Operating cash flow (OCF) measures cash actually generated from running the business. Take net income, add back non-cash charges (depreciation, amortization), then subtract the change in working capital. OCF reveals whether profits are translating into real money or being tied up in inventory and receivables growth.
500k net income + 200k D&A - 100k working capital increase = 600k OCF. That's 100k more cash than net income implied because non-cash depreciation didn't actually leave the business. Strong companies show OCF greater than net income consistently - weak signals show when OCF falls below net income for multiple quarters (usually means receivables or inventory growing faster than sales).
OCF is the most manipulation-resistant profitability metric. Revenue can be recognised aggressively; net income can be massaged via one-off reserves; but cash either hit the bank or didn't. Investors scrutinise OCF growth trajectory more than earnings growth, especially for businesses showing strong net income but weakening cash generation.
A worked example
Try the defaults: net income of 500,000, depreciation + amortization of 200,000, working capital change of 100,000. The tool returns 600,000.00. You can adjust any input and the result updates as you type — no submit button, no reload. That's the real power here: seeing how sensitive the output is to one or two assumptions.
What moves the number most
The result responds to Net Income, Depreciation + Amortization, and Working Capital Change. Not every input has equal weight. Adjusting one input at a time toward extreme values shows which ones move the result most.
The formula behind this
OCF = net income + D&A - working capital change (simplified indirect method). Everything the calculator does is shown in the formula box below, so you can check the math against your own spreadsheet if you want.
What the score tells you
Headline financial numbers — income, savings, debt — each tell part of the story. This calculation stitches several together into a single read you can track over time. The value is in the direction, not the absolute number.
What this doesn't capture
The score is a composite of the inputs you provide. Life context — job security, family obligations, health, housing — doesn't appear in the math but shapes the real picture. Use the number as a prompt, not a verdict.
££500,000 net income + ££200,000 D&A - ££100,000 WC change = 600,000.00.
Inputs
This example uses typical values for illustration. Adjust the inputs above to match a specific situation and see how the result changes.
Sources & Methodology
Methodology
This calculator computes operating cash flow using the indirect method, which reconciles net income to actual cash generated from business operations. The formula adds back depreciation and amortization—non-cash expenses that reduce reported profit but do not consume cash—to net income. It then subtracts the change in working capital, which represents cash tied up in or released from current assets and liabilities. A positive working capital change (increased inventory or receivables, for example) reduces cash flow, while a negative change releases cash. The calculator assumes a constant relationship between these components and does not model tax effects, one-time items, changes in deferred taxes, or other adjustments sometimes included in full cash flow statements. Results reflect the simplified indirect method and should be cross-referenced with complete financial statements for comprehensive analysis.
References
Frequently Asked Questions
OCF vs free cash flow?
Why is OCF below net income?
What does OCF > net income mean?
Direct vs indirect OCF method?
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