Yeah, what this tool doesn't account for is all the non-billable time you'll have to spend trying to find the work that you will be billing for. If you figure

Yeah, what this tool doesn't account for is all the non-billable time you'll have to spend trying to find the work that you will be billing for. If you figure 50% non-billable (which could be wildly optimistic), the ~200 work days per year would turn into ~100 billable work days, and there is your factor of 100.