I ended up owing the IRS a lot more than intended for tax year 2020, so I need to make an adjustment to my withholdings for 2021 but I'm REALLY confused about what to put on this new W-4 form.
I used the IRS Withholding Estimator and it tells me "Enter $393 for credits and other reductions to annual withholding (Line 3 on Form W-4 is already pre-filled)" which makes no sense to me since Line 3 is supposedly for adding the amounts "above" (for claiming dependents).
Then I used the TurboTax calculator and it tells me to put $153 in line 4(c). This makes more sense, but I'm very skeptical since the official IRS calculator gave me something SO different. And does this simply mean I would have an extra $153 in federal taxes deducted from each paycheck?
