When do I send the bill?
Their clock starts when the bill arrives.
Five 600 jobs a week, billed a week late on 14 days: 9,000 waiting, 3,000 of it from the wait.
Bill from the driveway, before you leave.
Questions
What if the job isn’t quite done?
Bill what’s done now, and the rest when it is.
How many days should I give them?
Pick a short, plain due date and put it on every bill.