There are four major types of capital: working capital, debt, equity, and trading capital.[i] Working capital is the business’s liquidity (or cash) that can fulfill its daily obligations. Debt capital is capital that is gotten through borrowing. This could include borrowing from banks, friends and family, credit card companies, etc. Equity capital is when an investor buys some equity (or stock) in a company and subsequently has some ownership claim. Trading capital is used by brokerages that do trades. Trading capital will not likely affect your business.