Capital expenditure (capex) is money a company spends to acquire, build, or improve long-lived assets such as factories, machinery, servers, networks, or data centers.
How it works
Unlike many day-to-day operating expenses, capital spending is generally recorded as an asset and recognized as expense over time through depreciation or amortization, subject to accounting rules.
A capex increase can mean demand is strong enough to justify more capacity, or it can signal that growth is becoming more expensive. The business outcome depends on future utilization and returns.
Why it matters
Capex directly affects cash flow and is especially important in capital-intensive industries such as semiconductors, telecom, energy, and AI infrastructure.
When management raises capex guidance, investors often update both growth expectations and near-term free-cash-flow estimates.
A simple market example
A cloud company raises annual capex from $100 billion to $120 billion to build more AI data centers. Future capacity increases, but more cash leaves the business before the new assets generate revenue.
Common mistakes
Assuming higher capex is automatically bad. Productive investment can create valuable future capacity.
Assuming higher capex is automatically bullish because it signals growth. Returns can disappoint if demand or pricing changes.
Frequently asked questions
Is capex an operating expense?
Not usually in the same period. Capitalized assets are generally expensed over time through depreciation or amortization.
Why does capex reduce free cash flow?
Because capex is an actual cash outflow deducted in common free-cash-flow calculations.
Which companies tend to have high capex?
Manufacturers, utilities, telecom networks, semiconductor companies, data-center operators, and other asset-intensive businesses often do.
Educational content only. Definitions describe common market usage and may vary by jurisdiction, instrument, or institution.