This lecture will help you build a realistic financial plan for your start-up. It's important to have a detailed plan that identifies how you spend money and how you make money. To do this, you need to be familiar with the basic tools of financial planning, including income statements, cash-flow forecasts, expense statements and balance sheets. We use case studies to examine the financial plans of both successful and failed companies, focusing on their ability to forecast realistic scenarios for business growth and cash flow.