Standard procedure for the church. I joined TNPC last month; however, I still need to write the letter officially terminating my membership at my parents' Methodist Church.Write a long, nasty, mean-spirited letter to explain everything that they dislike about the church and articulate their own self-pity at length. This page describes how a taxexempt organization should provide notice to the IRS of a termination. Write a letter to your bishop and explain you want to be removed from the membership rolls of the church. Mail it or give it to him.