Capital
Capital is the money and assets a business uses to run and grow. Learn its types, uses and sources.
Published Monday 17 August 2026
Table of contents
Key takeaways
- Capital is the money and assets a business uses to run its day-to-day operations and fund growth.
- The main types are working, debt, equity, fixed and trading capital, each with a different job.
- Capital can come from inside the business, such as retained profit, or outside it, through loans and investors.
- Tracking your capital shows whether you can cover today's bills and invest in what comes next.
What is capital in business?
Capital is the money used to build, run or grow a business. It can also refer to the net worth, or book value, of a business.
In everyday use, capital most often means the money a business puts to work, either to meet upcoming expenses or to invest in new assets and projects. It is broader than cash alone, because assets like equipment, property and stock also count as capital when they hold value the business can use.
Why capital matters
You have to put money into a business to get a profit back out, and capital is the money that goes in. Without enough of it, a business struggles to pay its way or take on new opportunities.
A business needs enough capital to meet all its upcoming expenses, which is known as working capital. If it runs short, it can default on bill payments and may have to stop trading. Most owners aim to hold more than enough working capital, so the surplus can go towards improvements that help the business grow.
Types of capital
Businesses usually group capital into a few core types, each serving a different purpose. Understanding them helps you see where your money comes from and what it is meant to do.
- Working capital is the money available for day-to-day operations, worked out as current assets minus current liabilities
- Debt capital is borrowed money, such as a business loan or bond, that you repay over time with interest
- Equity capital is money invested by the owners or shareholders in exchange for a stake in the business, so it does not need to be repaid
- Fixed capital is the long-term investment in physical assets like premises, machinery and vehicles that a business uses for years
- Trading capital is the money a brokerage or financial firm sets aside to buy and sell securities
Owners tend to watch working capital most closely, because it shows whether the business can cover its short-term obligations. The value that owners and shareholders hold in the business is measured by its equity.
How businesses use capital
Businesses use capital to pay for the ongoing work of making and selling goods and services, and to create profit. The aim is to earn a higher return than the capital costs to raise.
In practice, that means covering operating costs like rent, wages, stock and equipment, then investing what is left in growth. Owners might buy new machinery, hire staff, move into a new market or use assets as security for a loan. How well a business manages this mix shapes its profitability and how much room it has to expand.
Where capital comes from
Capital comes from two broad places: inside the business and outside it. Knowing your options helps you choose funding that suits your stage and goals.
Internal sources include retained profit reinvested into the business and cash freed up by selling assets you no longer need. External sources include debt, such as bank loans and bonds, and equity from investors like shareholders and venture capitalists. There are many ways to finance your business, from grants and crowdfunding to invoice financing that releases cash tied up in unpaid invoices.
Manage your capital with Xero
Capital only works in your favour when you can see it clearly. Xero's cloud accounting software tracks your assets, liabilities and cash flow in one place, so you always know how much capital you have and where it is going. Put your numbers to work and get one month free when you sign up today.
FAQs on capital
Here are answers to common questions about capital in business.
Is capital an asset?
Capital and assets overlap but are not the same. Assets are the resources a business owns, while capital is the money and valuable assets it puts to work to operate and grow.
What is the difference between capital and money?
Money is cash you can spend immediately, while capital is money and assets used for current operations and future investment. All capital involves value, but not all of it sits in the bank as ready cash.
What are examples of capital?
Examples include cash in the bank, money raised from selling shares, a business loan, and assets such as machinery, premises and stock. Each one gives the business value it can use to generate a return.
What are the main sources of capital?
Most businesses draw on three sources: working capital from daily trading, debt capital from lenders, and equity capital from owners or investors. Many use a combination to spread risk.
How do you calculate working capital?
Subtract your current liabilities from your current assets over a 12-month period. A positive figure means you can cover short-term costs, while a negative one signals a possible shortfall.
Related terms
Learn more about capital
Handy resources
Advisor directory
You can search for experts in our advisor directory
Xero Small Business Guides
Discover resources to help you do better business
Try Xero for free
Try Xero’s fast, simple, powerful online accounting software for your small business
Disclaimer
This glossary is for small business owners. The definitions are written with their requirements in mind. More detailed definitions can be found in accounting textbooks or from an accounting professional. Xero does not provide accounting, tax, business or legal advice.