I am in a facebook group and someone asked how to file because they had interest of $6.00 and no other income. Of course people said no need to file if income is only $6.00, but the poster pointed out they did IRS online test and it said they needed to file. So it looks like if you make over $5.00 and file as married filing separate you now need to file. I did the online test and got this same result, but I can't find the IRS publication. Was this always the case and I just missed it? I am self employed so I had to file last year because of income being over $400. But it's still good to know if the threshold has been drastically lowered. Anyone that can confirm?