Forecasting is an important topic for startups. You need a financial plan to build an economically viable business. By quantifying and then validating your business plan and business model, assumptions and vision you are able of finding out whether you can turn your ideas into a sustainably operating business. It helps you understand how you spend and earn money, what are your business KPIs. Financial model is also one of the key documents used by investors to evaluate whether your project is a worthwhile investment opportunity.