There are internal and external sources of finance available for business growth. Internal sources include reinvesting profits and selling assets. External long-term sources are shares (ordinary and preference) and long-term loans such as debentures, while short-term sources include overdrafts, trade credit, factoring, and leasing. External sources also allow for inorganic growth through mergers and acquisitions requiring large amounts of financing. Business angels and venture capital are other sources that provide capital for growing businesses.