1) more income and withholding that didn't increase to match the extra taxes owed?
or
2) a child who reached age 17 during 2019 ?
or
3) Had a user the other day who typed withholding of $321 instead of $4321 on their software W-2 (Pretty big user entry error). Edit those forms and check all entries.
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See what other ideas come up from other users
____________*Answers are correct to the best of my knowledge when posted, but should not be considered to be legal or official tax advice.*
