I can't stress this enough - cashflow will make or break your business. You can have insane revenue.. but if you don't have cash in the bank to pay your bills "SEE YA!"
A cashflow forecast is a template that uses assumptive predictions to show you exactly when you are going to run out of cash. You can also use this model to determine whether or not you can afford a new debt. If you need a new truck, throw that cost in there. It'll tell you without emotion whether or not you can afford it, or if it's going to break you. I can't imagine the new truck is "Needed" when you can visually see your bank will be negative.
This is arguably the most important tool we can have in such a cash flow necessity type of business.
Here is a snap shot for reference.. This is a P&L side by side with a cashflow statement (This is exactly what we use at Handys & Champion Service Partners)
If you're not in my consulting group and you want a template of this AND a 30 min session on exactly how to use it comment CASHFLOW ($249) and I'll jump on and build it with you!