<prompt> Human: My girlfriend is on my health insurance as my domestic partner. She also works and has her own health insurance. I just recently noticed on my pay stubs that theres a weekly deduction called Domestic partner imputed income of 100 a week. When I called my employer to ask about the deduction, they said if my girl was my tax dependant then they take from each check to compensate for health care. The problem is though is she is not my tax dependant as we both work and file taxes separately.This was a filing mistake on their end and has been fixed but my question now is how do I get that money back come IRS time since YTD I lost 4800 take home on something I should not have been taxed on? Thank you for any help!  <response>: I think theyve got it the wrong way round.When an employer provides health insurance for an employees partner who is NOT a tax dependent, then per IRS rules that benefit cannot be paid pre-tax like the employees benefits are. To compensate for that, the employer has to impute an income add an equivalent dollar amount to your taxable pay to balance out the unallowed preferential tax treatment of the benefit. So I think they were correct in adding the imputed income.If they were not correct and do actually need to remove this, any over-withheld income tax simply gets returned with any other refund you might have when you file your taxes, so that is straightforward. Any over-withheld payroll taxes however must be refunded to you directly from your employer, and the W2 they give you at the end of the year should reflect this too. 