I just received an email from a client regarding distributions that were made from their plan in December, 2017 and need Forms 1099R issued. This is a plan that has the investments via brokerage accounts, which we (TPA) provide the recordkeeping for. We also produce the Forms 1099R each year, however the client never alerted us of these 2 distributions in January when we inquired. Now they want us to prepare the Forms, and I can see that there will be a penalty to the IRS for filing paper copies late ($100?). I've never experienced this, so does anyone know what the process is to file these late? Is there an addiitional form to file with the penalty, anything else?