Marriage in America is changing. People are waiting longer to tie the knot, and are remaining financially independent even after marriage. In fact, a 2017 Bank of America survey suggests that millennial married couples are around 15 percentage points more likely than their predecessors to keep their finances separate. In this piece for The Conversation, behavior scientist Scott Rick analyzes the benefits and risks of joint accounts and makes an argument for why sometimes total transparency can be too much of a good thing.