Is everyone calculating commission in a spreadsheet?

I have a landscaping business. 

I have a pay for performance model, pay out for google reviews, and am thinking about providing sales people with a commission for specific types of jobs. 

Right now, I use a whiteboard to show the crew and calculate in Excel. Is there a better way to do this? I feel like paying a flat rate (percentage of invoice or flat rate per sale) is simple. But when it comes to tracking hours, or paying based on margins, upsells etc. It can get pretty complicated tracking everything in Excel.