When the LO or bank asks for bank statements, have them pull VOD (verification of deposits). All they need the statements for is to verify income, etc. The VOD does that. Either way, as long as it was just once and you have an explanation this would not likely kill a deal. Now, this along with low scores, high DTI, more recent credit issues (24 months or sooner) could be the proverbial straw that broke the camels back. In that case and if they won't use VOD's wait 2 months unitl you have 2 months statements that have no NSF fees.