For those of you who allow credit, do you have any issues with unpaid accounts? How do you handle this? What is the best method of collecting? In the past I have only had to send out a reminder that their account is overdue and this has resulted in a payment soon after. I try to confirm an estimate before doing any work unless they are clear that they want the work done no matter what. Because I usually deal with reputable business people who want to keep a good reputation I haven't had many problems. I do have one regular customer who hasn't paid a fairly large bill (under $1000) in 75 days. I am not sure how to handle this, and have not been able to get in touch with him.