Fortunately, there are a host of tools available, which will help you with this. Cash flow templates in Excel or Google Docs can be a good start. You can find a template that suits best to cater to your needs and accordingly tweak it. For more serious cash flow projections, you can opt for proprietary cash flow management software, such as Pulse, Intuit QuickBook or PlanGuru. These will help you make forecasts, project different cash flow scenarios, as well as generate reports and graphics to estimate and visualise your cash flow. In the absence of an in-house expert, outsource cash flow management activities to start-ups and focus on running the company.