Free Cash Flow vs Net Income: Why Cash Tells the Truer Story

Why net income and cash differ

The SEC's staff guide to the cash flow statement says most domestic companies use accrual-based accounting, and that under the indirect method, "the calculation starts with net income and adjusts for changes that did not affect cash (such as depreciation)" and for "changes in current assets and current liabilities," such as accounts receivable, inventory and accounts payable. The statement has three sections: operating activities (the principal business operations), investing activities (purchase or sale of long-term assets) and financing activities (dealings with owners and creditors).

Three things typically separate profit from cash:

1. Non-cash charges. Depreciation is deducted in arriving at net income but involves no cash that year.
2. Working capital. If customers pay later, or inventory builds, profit is recorded before cash arrives.
3. Capital spending. Money spent on equipment and data centres appears in investing activities. Net income only feels it gradually, through depreciation.

What "free cash flow" means

The most common definition is cash from operations minus capital expenditure. There is no official standard. The SEC staff (Compliance and Disclosure Interpretation 102.07, May 2016\) says free cash flow "does not have a uniform definition and its title does not describe how it is calculated," so a company should give "a clear description of how this measure is calculated, as well as the necessary reconciliation." The staff also says it is "a liquidity measure that must not be presented on a per share basis," and warns against implying that it is residual cash available for discretionary spending, since "many companies have mandatory debt service requirements or other non-discretionary expenditures" that it does not deduct.

So when you see a company's free cash flow, read its definition. Amazon, for example, defines it as "cash flow from operations reduced by 'Purchases of property and equipment, net of proceeds from sales and incentives.'"

Case 1: Amazon, 2024 and 2025

Figures from Amazon's fourth-quarter 2025 earnings presentation (trailing twelve months, $ millions), with operating cash flow and capital expenditure confirmed against the 10-K:

Our calculations from those figures:

The company grew profit while free cash flow shrank because it spent heavily on assets. The 10-K reports cash capital expenditures of $77.7 billion in 2024 and $128.3 billion in 2025\. It also states that its "financial focus is on long-term, sustainable growth in free cash flow." Low free cash flow in this case reflects investment rather than weak operations, and whether that investment earns an adequate return is a separate question (we cover return on capital in a later guide).

• Net income rose 31.1% in 2025 and operating cash flow rose 20.4%. Capital spending rose 65.2%, and free cash flow fell 70.7%.
• Operating cash flow was 195.6% of net income in 2024 and 179.6% in 2025, so Amazon's operations generated far more cash than profit.
• Free cash flow was 64.5% of net income in 2024 and 14.4% in 2025\.
• Capital spending absorbed 92.0% of operating cash flow in 2025, against 67.0% in 2024\.

Case 2: Apple, fiscal 2024 and 2025

Figures from Apple's consolidated financial statements for fiscal years ended 28 September 2024 and 27 September 2025 ($ millions):

Our calculations: free cash flow was 116.1% of net income in fiscal 2024 and 88.2% in fiscal 2025\. Net income rose 19.5% while free cash flow fell 9.2%. Capital spending took 8.0% of operating cash flow in 2024 and 11.4% in 2025\.

Apple's fiscal 2024 net income includes a one-time income tax charge. Its 8-K for the fourth quarter says the company recorded a one-time income tax charge of $10.2 billion, net, relating to the reversal of the European General Court's State Aid decision; excluding it, fiscal 2024 net income would have been $103,982 million. Against that adjusted base, fiscal 2025 net income grew 7.7% (our calculation). We have not traced how that charge moved through operating cash flow, so we do not draw a conclusion about it.

The contrast with Amazon is in capital intensity: Apple's capital spending was a small share of operating cash flow, so its free cash flow stayed close to net income.

Why this matters: accruals and returns

Richard Sloan's 1996 paper in The Accounting Review asked whether stock prices reflect what accruals and cash flows say about future earnings. It found that the accrual component of earnings is less persistent than the cash flow component, and that stock prices are found "to act as if investors 'fixate' on earnings." Over 1962–1991 (40,679 firm-years, NYSE and AMEX), a portfolio long the lowest-accrual decile and short the highest earned size-adjusted returns of 10.4% in the following year, 4.8% in the second and 2.9% in the third. The paper is old, covers one sample, and we did not check later studies, so treat it as evidence that the split between accruals and cash is informative, not as a trading rule.

How to read the two together

A checklist

This article is general information, not financial advice. Company figures are as published in the sources below; ratios are our calculations.

1. Read the company's definition of free cash flow and the reconciliation, as the SEC staff advises.
2. Look at several years. One year of capital spending can distort the ratio.
3. Split the gap. Take net income, add back non-cash charges, then the working capital change, then capex.
4. Check one-offs in the net income line before comparing years.
5. Remember what it ignores. Free cash flow does not deduct debt repayments or dividends.
6. Be wary of per-share free cash flow figures. The SEC staff says free cash flow must not be presented on a per share basis.