I've heard this is required by some churches if you are a member and are supposedly tithing. It came to my attention when someone told me a few years back that some older lady had her church membership revoked over it. I don't recall the details.
The problem I have with it, is that under the new testament believers are told to give as they are led to give, there isn't a mandatory tithe. So any church teaching that it is, is suspect to me.
My mom used to tithe, when she fell out with the pastor that took over my grandfather's church, she saved the money, and would send it to people or organizations needing disaster relief, or if she saw a hardship story on the news or in the paper.