Fixed capital is the money a business commits to long-lived productive assets: property, plant, machinery, equipment, and infrastructure. These are the physical tools that generate revenue over years or decades, not items consumed in a single operating cycle. A factory, a fleet of trucks, or a data center are all fixed capital. You buy them once and use them to produce output over their useful life.
Think of fixed capital as the kitchen in a restaurant: it is what enables every meal, not what gets served.
Fixed capital and working capital serve completely different roles in your business, and you need both to function.
Fixed capital buys the tools and facilities that stay in your business permanently. Working capital finances the day-to-day cycle: buying inputs, converting them into products, selling them, and collecting cash. A factory is fixed capital. The raw materials processed through it each month are working capital. A factory with no raw materials produces nothing.
Asset intensity varies enormously depending on how a business creates value. High fixed-capital industries require constant investment just to maintain competitive capacity.
A consulting firm's fixed capital consists mainly of computers and office furniture. A steel mill requires billions before it can produce a single ton of output.
You record fixed capital assets on the balance sheet as property, plant, and equipment. You do not expense them immediately when you buy them. Instead, you spread their cost over their useful life through depreciation, which charges a portion of the original cost to the income statement each year.
Accumulated depreciation reduces the asset's book value on the balance sheet over time. Once a fixed asset is fully depreciated, it may still be in active use, which is why book value can be a poor indicator of operational reality for capital-intensive businesses.
Gross Fixed Capital Formation is the macroeconomic measure of how much an economy invests in fixed assets each year. National statistical agencies include it as a component of GDP because it represents spending that directly expands future productive capacity.
High gross fixed capital formation relative to GDP is a consistent feature of fast-growing economies. South Korea invested more than 30% of GDP in fixed capital during its industrial development decades. The United States typically invests 17% to 21% of GDP in fixed assets annually according to Bureau of Economic Analysis data.