There was a window of time several years ago when ministers could opt out of paying social security on their ministry income. It was only for ministry income. I don't know that it can be done anymore. I think those who never held a secular job wished they had not done that. It may have worked well for bi-vocational pastors, but you got to get your time in for both Medicare and SS benefits. Every other year my wife and I get our a notice of our qualifications for both, and even with retirement accounts, I wonder if Walmart will hire me when I retire. Even so come LORD Jesus!