How to Calculate Capital Expenditures FAQ: Your Top Questions Answered
How to calculate capital expenditures is a question every investor encounters when building a free cash flow model for the first time. The core formula is direct: look at the cash flow statement, find "purchases of property, plant, and equipment" under investing activities, and take the absolute value of that negative number. That figure is capex for the period. What follows that calculation is where most of the analytical work happens.
This FAQ covers the most common questions investors have about calculating and interpreting capital expenditures, with real examples and specific data.
Key Takeaways
- Capital expenditures appear as a negative cash outflow on the cash flow statement under investing activities.
- The primary formula is: Capex = Change in Gross PP&E + Depreciation for the Period.
- Free cash flow = Operating Cash Flow - Capital Expenditures. This is the most used application of the capex figure.
- Capex-to-revenue ratios above 15% in mature businesses indicate high capital intensity and often suppress free cash flow.
- Maintenance capex can be estimated as equal to annual depreciation. Growth capex is total capex minus that estimate.
- You can pull capex, free cash flow, and capex-to-revenue for any stock directly through the ValueMarkers screener without manual spreadsheet work.
The Core Formula for Capital Expenditures
The simplest way to find capital expenditures is directly from the cash flow statement:
Capex = |Purchases of PP&E| from the Investing Activities section
The number appears as a negative cash flow because it represents money leaving the company. When analysts reference capex, they almost always mean the absolute value.
For companies that capitalize software development costs separately, total capex should include both:
Total Capex = PP&E Purchases + Capitalized Software Costs + Other Capital Additions
The balance sheet derivation produces the same answer:
Capex = Ending Gross PP&E - Beginning Gross PP&E + Depreciation
This formula reconstructs capex from balance sheet data when the cash flow statement is unavailable or when you want to cross-check the reported figure. If the two methods disagree materially, investigate: acquisitions or disposals of PP&E can cause discrepancies that are real economic events, not errors.
Where to Find Capex on Financial Statements
Capex appears in three places, with the cash flow statement being the most reliable:
Cash Flow Statement (preferred): Under investing activities, look for line items labeled "Capital expenditures," "Purchases of property, plant, and equipment," "Additions to PP&E," or "Investment in fixed assets." Some companies present a single capex line. Others split it into components (land, buildings, machinery).
Balance Sheet (secondary): Compare gross PP&E (not net) from two consecutive periods. Add back the period's depreciation charge to account for asset consumption. The result approximates capex.
Footnotes: Companies with complex capex structures disclose the breakdown in financial statement notes. For a thorough analysis, the footnotes often reveal detail the summary statements omit.
| Source | Reliability | Detail Level | Speed |
|---|---|---|---|
| Cash Flow Statement | High | Medium | Fast |
| Balance Sheet Derivation | High | Low | Medium |
| Footnotes | Very High | Very High | Slow |
For most screening purposes, the cash flow statement figure is sufficient.
Calculating Free Cash Flow from Capex
Once you have the capex figure, free cash flow follows immediately:
Free Cash Flow = Operating Cash Flow - Capital Expenditures
For Apple (AAPL) in fiscal 2024:
- Operating Cash Flow: $108 billion
- Capital Expenditures: $9.5 billion
- Free Cash Flow: $98.5 billion
- FCF Margin: 25.2% of revenue
For Microsoft (MSFT) in fiscal 2024:
- Operating Cash Flow: $119 billion
- Capital Expenditures: $44.5 billion
- Free Cash Flow: $74.5 billion
- FCF Margin: 30.4% of revenue
Microsoft's higher FCF margin despite higher capex reflects its larger operating cash flow base. The capex intensity difference (2.4% for AAPL vs. 18.2% for MSFT) is significant, but both companies are generating substantial free cash flow. The real question is what those capex investments earn in return, measured by ROIC: AAPL at 45.1%, MSFT at 35.2%.
Estimating Maintenance vs. Growth Capex
Separating maintenance capex from growth capex is the most useful analytical step after calculating total capex.
Maintenance Capex Estimate = Annual Depreciation and Amortization
This approximation rests on the idea that depreciation measures annual asset consumption. Replacing that consumed capital approximates the cost of keeping the business in its current state.
Growth Capex = Total Capex - Maintenance Capex Estimate
For a company with $50 million in capex and $30 million in D&A, approximately $30 million is maintenance spending and $20 million is growth investment. The growth capex should earn returns above the cost of capital. If it does not, the company is allocating capital to projects that destroy value.
Companies in industries with accelerating technology obsolescence (semiconductors, cloud infrastructure) often have maintenance capex that exceeds their D&A, because their assets depreciate economically faster than accounting depreciation captures. This is why analyst estimates of maintenance capex sometimes exceed reported D&A for these sectors.
Further reading: SEC EDGAR · Investopedia
Why capex formula Matters
This section anchors the discussion on capex formula. The detailed treatment, formula, and worked examples appear in the body of this article above. The points below summarize the most important takeaways for value investors who want to apply capex formula in real portfolio decisions. ValueMarkers exposes the underlying data on every covered ticker via the screener and stock profile pages, so the concepts in this article translate directly into actionable filters.
Key inputs for capex formula
See the main discussion of capex formula in the sections above for the full treatment, including the inputs, the calculation methodology, the typical sector benchmarks, and the most common pitfalls to avoid. The ValueMarkers screener lets value investors filter the full universe of 100,000+ stocks across 73 exchanges using capex formula alongside the rest of the 120-indicator composite, with sector percentiles and historical trends shown on every stock profile.
Sector benchmarks for capex formula
See the main discussion of capex formula in the sections above for the full treatment, including the inputs, the calculation methodology, the typical sector benchmarks, and the most common pitfalls to avoid. The ValueMarkers screener lets value investors filter the full universe of 100,000+ stocks across 73 exchanges using capex formula alongside the rest of the 120-indicator composite, with sector percentiles and historical trends shown on every stock profile.
Related ValueMarkers Resources
- Net Margin — Glossary entry for Net Margin
- Operating Margin — Operating Margin is the metric used to how efficiently a company converts capital into earnings
- Capex To Revenue — Glossary entry for Capex To Revenue
- Capital Expenditures — related ValueMarkers analysis
- Blue Bird Capital Expenditures 2024 — related ValueMarkers analysis
- How To Invest In Bitcoin — related ValueMarkers analysis
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Use our screener to calculate capex-to-revenue, free cash flow, and ROIC for any publicly traded company across 73 exchanges. The data pulls directly so you spend your time on analysis rather than data gathering.
Written by Javier Sanz, Founder of ValueMarkers. Last updated April 2026.
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