If a Gift Tax return has no payment due what is the penalty for filing it late? In other words how much of an issue should this be for my client. Obviously the return is due on Monday and it's ready for me to print and efile but my client is considering telling me he has no time to meet with me until a week after the deadline. I will of course have no problems caused by his lack of availability to meet with me and sign so that I can either file or give him a copy to mail but I want to know so I can advise him how much of a problem he is going to have.