This document summarizes various sources of finance for businesses, including both internal and external sources. Internally, businesses can use retained profits from sales or sell assets to fund organic growth. Externally, short-term financing includes bank loans, overdraft facilities, and trade credit. Long-term external financing includes shares (ordinary and preference), debentures, bank loans, and venture capital or business angels. Mergers and acquisitions also allow for inorganic growth through external financing such as secured loans.