In about 15 years in the labor force, I've never once had the withholding match up perfectly with the taxes owed. Either not enough is withheld or too much.
Either way, I'm stuck filing the #($&ing paperwork.
Either way, I'm stuck filing the #($&ing paperwork.
Submit a signed W-4 [0] to your employer with the word "Exempt" on Line 7.
Of course, by doing so you also certify that you are actually meet the legal requirements stated on the form for $0 withholding, under penalty of perjury, so you obviously should only do it if, you know, you actually qualify for it. But that's how you do it.
AFAIK, they aren't liable for under withholding if they withhold correctly according to the W-4 signed by the employee, even if the W-4 claims things (e.g., "exempt" when the employee does not meet the qualifications) that are not accurate.