Capital Expenditure (CapEx): What It Is and How to Calculate It
Capital expenditure (CapEx) is money a company spends to acquire or improve long-term assets. Here is what CapEx is, the formula, a worked example, how it differs from OpEx, and why it matters for cash flow.
When a company buys a building, a fleet of trucks, or a new production line, it is not an everyday expense. It is an investment in the long-term capacity of the business, and it is accounted for differently. That spending is capital expenditure, or CapEx, and understanding it is key to reading a company's cash flow and its bets on the future.
This guide explains what capital expenditure is, the formula, a worked example, how it differs from operating expense, and why it matters.
What is capital expenditure?
Capital expenditure (CapEx) is money a company spends to acquire, upgrade, or maintain long-term physical or intangible assets, things like property, equipment, vehicles, buildings, and technology, that will provide value for more than one year. Because the benefit is long-lived, CapEx is capitalized on the balance sheet and depreciated over the asset's useful life, rather than expensed all at once.
CapEx is spending on the future. It is the money a company lays out now to build the capacity, factories, equipment, systems, that will generate returns for years to come, which is why it is treated as an investment rather than a cost of this period.
The capital expenditure formula
You can calculate CapEx from the financial statements:
CapEx = Change in Property, Plant & Equipment (PP&E) + Current-Period Depreciation
In other words, the increase in PP&E from one period to the next, plus the depreciation recognized in the period (since depreciation reduced the book value of existing assets). For example, if PP&E rose from $500,000 to $650,000 and depreciation for the year was $50,000:
- CapEx = ($650,000 − $500,000) + $50,000
- CapEx = $150,000 + $50,000 = $200,000
CapEx also appears directly in the investing section of the statement of cash flows, usually labeled "purchases of property and equipment."
CapEx vs. OpEx
| Capital expenditure (CapEx) | Operating expense (OpEx) | |
|---|---|---|
| What it buys | Long-term assets | Day-to-day running costs |
| Benefit period | More than one year | Current period |
| Accounting | Capitalized and depreciated | Expensed immediately |
| Examples | Buildings, equipment, vehicles | Rent, salaries, utilities, software subscriptions |
The distinction matters because it changes how spending hits the financial statements: OpEx reduces this period's profit directly, while CapEx is spread across many periods through depreciation.
Why capital expenditure matters
- Cash flow. CapEx is a major use of cash and the key subtraction in free cash flow (operating cash flow minus CapEx).
- Growth signal. Rising CapEx can signal a company investing in expansion; falling CapEx can signal caution or maturity.
- Planning. CapEx budgets are a core part of financial planning, since big asset investments shape cash needs for years.
Frequently asked questions
What is capital expenditure?
Capital expenditure (CapEx) is money spent to acquire, upgrade, or maintain long-term assets like property, equipment, and technology that provide value for more than a year. It is capitalized on the balance sheet and depreciated over the asset's useful life.
How do you calculate CapEx?
CapEx = change in PP&E + current-period depreciation. For example, PP&E rising from $500,000 to $650,000 with $50,000 of depreciation gives CapEx of $200,000. It also appears in the investing section of the cash flow statement.
What is the difference between CapEx and OpEx?
CapEx buys long-term assets and is capitalized and depreciated over time; OpEx covers day-to-day running costs and is expensed immediately. CapEx examples include buildings and equipment; OpEx includes rent, salaries, and subscriptions.
Where does CapEx appear on financial statements?
CapEx appears as an asset on the balance sheet (within PP&E), is depreciated over time on the income statement, and shows up as a cash outflow in the investing section of the cash flow statement.
The bottom line
Capital expenditure is a company's investment in its long-term future, the spending on assets that will pay off for years. Calculated as the change in PP&E plus depreciation, it is capitalized and depreciated rather than expensed, and it is the key subtraction that turns operating cash flow into free cash flow. Watching CapEx tells you how much a company is investing to grow.
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