I do not want to sound negative, but this post is complete water... What you need is: - understand your numbers, which requires knowledge, brain and a bit of

I do not want to sound negative, but this post is complete water... What you need is: - understand your numbers, which requires knowledge, brain and a bit of experience; - accurate numbers, which shall be output by accounting. You can prepare P&L forecast for $50-100M business on one piece of paper, if needed. Excel just makes things more efficient.