A well-known saying among fundamental analysts goes: “Profit is vanity, cash flow is sanity, but cash in hand is reality.” When studying companies listed on the NSE or BSE, retail investors often focus on the net profit (profit after tax) in quarterly results. But accounting profit can be flattered by aggressive revenue recognition, slow customer payments or a build-up in working capital. To find resilient businesses, analysts look at free cash flow (FCF).
1. What is free cash flow, and how do you calculate it?
Free cash flow is the cash a business generates after paying its operating costs and the capital expenditure (capex) needed to maintain or expand its assets. Net profit follows accrual accounting; FCF tracks the cash that actually moves in and out of the bank.
Free cash flow = Cash flow from operations (CFO) − Capital expenditure (capex)
CFO comes straight from the cash flow statement. Capex = purchase of property, plant and equipment (PP&E) + purchase of intangible assets.
FCFF vs FCFE: two versions of free cash flow
- Free cash flow to the firm (FCFF): cash available to all providers of capital, both shareholders and lenders, after operating costs and capex. In most Indian non-financial company statements, interest paid sits under financing activities, so CFO − capex is a close approximation of FCFF.
- Free cash flow to equity (FCFE): cash left for shareholders only, after paying interest and accounting for new borrowing or repayments:
FCFE = CFO − Capex − Interest paid + Net borrowing
Net borrowing = new debt raised − debt repaid. Where interest paid is already deducted within CFO, don’t subtract it again.
2. Net profit vs free cash flow: the divergence trap
How can a company report profits worth hundreds of crores and still run short of cash? Two accounting mechanics explain most of the gap:
- Accrual accounting vs cash collection. Indian companies follow accrual accounting. If a company sells goods worth ₹100 crore on credit, the full ₹100 crore is booked as revenue and the profit on that sale is recognised immediately, even if the customer hasn’t paid a rupee.
- Working capital consumption. If unsold inventory piles up in warehouses, or the time customers take to pay stretches from 30 days to 120 days, cash stays trapped on the balance sheet. A fast-growing company can run out of cash while reporting record profits.
A widening gap between profit and cash is one of the classic warning signs covered in our guide to red flags in financial statements.
3. Where free cash flow matters most, by sector
| Sector | How FCF behaves | Metric to watch |
|---|---|---|
| IT and software services (e.g. TCS, Infosys) | Low capex needs, so a large share of operating cash flow typically converts to FCF | FCF / net profit (high conversion is typical) |
| FMCG and consumer goods (e.g. Hindustan Unilever, Dabur) | Strong distribution lets many companies collect from customers before paying suppliers, keeping working capital low or negative | Cash conversion cycle |
| Capital goods and infrastructure (e.g. L&T, EPC firms) | Heavy upfront capex and delayed payments, including from government clients, can keep FCF low or negative for years | CFO / EBITDA |
| Banks and financials (e.g. HDFC Bank, ICICI Bank) | The standard FCF formula doesn’t apply: money is the bank’s raw material, and lending isn’t capex | Price-to-adjusted book value (P/ABV) and return on assets (ROA) |
For banks and NBFCs, see how P/B and P/ABV work in our P/E vs P/B guide.
4. Valuing a business on free cash flow: FCF yield
Just as investors use the P/E ratio, many use FCF yield to judge how much real cash a business produces for the price they pay:
FCF yield = Free cash flow per share ÷ Current market price per share
or, for the whole company, Free cash flow ÷ Market capitalisation
A higher FCF yield means the business generates more cash relative to its market value. In mature businesses, a yield above about 5–6% is generally considered high, though many quality Indian companies trade at much lower FCF yields because investors expect strong growth. The inverse of FCF yield is the price-to-FCF multiple.
5. Frequently asked questions
Can a company have negative free cash flow and still be a good business?
Yes. Fast-growing companies, or capital-intensive firms in a heavy build-out phase, often show negative FCF for a while. If that cash is going into projects that earn high returns (for example, a return on capital employed above 20%), the negative FCF can be a sign of investment rather than weakness. A mature company with negative FCF and flat revenue, on the other hand, is a warning sign.
Where do I find cash flow from operations in an Indian annual report?
In the statement of cash flows, prepared under Ind AS 7. Most companies use the indirect method: it starts with profit before tax, adds back non-cash items such as depreciation and amortisation, and then adjusts for changes in working capital and taxes paid.
What is the difference between maintenance capex and growth capex?
Maintenance capex is the routine spending needed to keep existing plants, machinery and facilities running. Growth capex is discretionary spending to expand capacity, adopt new technology or build new plants that should drive future earnings. Companies rarely report the split, so analysts often use depreciation as a rough proxy for maintenance capex.
Why isn’t free cash flow used to value banks and NBFCs?
For banks and NBFCs, money is the product itself. Taking deposits and making loans are their core operating activities, so the usual CFO and capex formulas don’t give a meaningful answer. Lenders are judged instead on price-to-book value (P/B or P/ABV), net interest margin (NIM) and asset quality (NPAs).
What is the FCF conversion ratio?
FCF conversion ratio = (Free cash flow ÷ Net profit) × 100. It shows how much of the accounting profit turns into actual cash. For mature companies, a conversion ratio consistently above 70–80% over a rolling three-to-five-year period is generally considered healthy. Look at several years, because a single year can swing with capex or working capital.
The bottom line
Net profit tells you what a company earned on paper; free cash flow tells you how much cash it actually kept. Check the cash flow statement alongside the profit and loss account, track FCF conversion over several years, and be wary when profits keep rising but cash doesn’t follow.
Companies named in this article are examples for education only and are not recommendations to buy or sell any security.
Please note: This article is for educational purposes only. Nothing here is a recommendation to buy or sell any security, IPO or investment. Do your own research and read all related documents carefully before investing. Disclosures