What is capital in business? Capital in business is the money and other financial assets a company uses to start, run and grow. It comes mainly from owners and investors (equity capital) or from lenders (debt capital). Businesses use capital to buy equipment, pay staff, hold inventory and fund new projects.
What does capital mean at work?
When people at work talk about capital, they usually mean money available for the business to use for more than day-to-day spending. “We need more capital” often means “we need funding to grow.”
Capital is different from revenue. Revenue is money earned from selling products or services. Capital is the money invested in or lent to the business, plus assets it has built up over time.
You’ll also hear related terms:
- Capital expenditure (CapEx): spending on long-term assets like machines, vehicles or buildings.
- Raising capital: getting new money from investors or lenders.
- Cost of capital: what it costs the business to use that money, such as interest or the return investors expect.
The main types of business capital
| Type | What it is | Example |
|---|---|---|
| Equity capital | Money from owners or investors in exchange for ownership | A founder invests savings; an investor buys shares |
| Debt capital | Borrowed money that must be repaid with interest | A bank loan or line of credit |
| Working capital | Short-term money available to run daily operations | Cash to pay suppliers and payroll |
| Trading capital | Money set aside for buying and selling securities | Used by brokerages and investment firms |
Working capital example
Working capital is a common way to check whether a business can cover its short-term bills. The formula is:
Working capital = current assets − current liabilities
Suppose a small print shop has:
- Current assets: $40,000 in cash, $25,000 owed by customers and $15,000 of inventory = $80,000
- Current liabilities: $30,000 owed to suppliers and $20,000 of short-term loans = $50,000
Working capital = $80,000 − $50,000 = $30,000. The shop has $30,000 of breathing room for short-term needs. Negative working capital can be an early warning sign of cash flow trouble.
Examples of capital in emails and messages
CEO email: “We’ve raised $2 million in capital to expand into two new states.”
Finance Slack: “This purchase counts as CapEx, so it goes in the capital budget, not operating expenses.”
Owner to banker: “We need working capital to cover inventory before the holiday season.”
How to talk about capital correctly
- Say which type you mean. “Equity,” “debt” and “working capital” lead to very different conversations.
- Don’t confuse capital with profit. A company can have capital from investors and still be losing money.
- Know the trade-off. Equity doesn’t need repaying but gives up ownership. Debt keeps ownership but adds interest and repayments.
- Separate CapEx from day-to-day costs. Accounting treats them differently.
- Check working capital regularly. It’s a quick health check for any business.
Related terms
See more in our Business and Finance hub.
FAQ
What is capital in simple terms?
Capital is the money and assets a business uses to operate and grow, usually provided by owners, investors or lenders.
What are the main types of capital?
The main types are equity capital (from owners and investors), debt capital (borrowed money), working capital (for daily operations) and trading capital (for buying and selling securities).
How do you calculate working capital?
Working capital equals current assets minus current liabilities. A positive number means the business can cover its short-term obligations.
Is capital the same as revenue?
No. Revenue is money earned from sales. Capital is money invested in or lent to the business, plus assets it holds.
What is capital expenditure?
Capital expenditure, or CapEx, is money spent on long-term assets such as equipment, vehicles, software or buildings.
