Anyways, whether it was from the brokerage I opened or the IRA, I had a class of income that would have made me need to pay to file, even though my total income was below 65k.
Another thing was foreign taxes paid (because some funds in one of your indexes are international). But they don't let you just say "listen, I'd rather skip the credit for those two whole dollars in taxes and not pay 50 dollars to file"