I was reviewing my w4 for work online and saw to my surprise I was listed as filing single. I am head of household and claim head of household when I file my taxes. I did just correct it to head of household status, but what does that mean for my tax withholding over the past few yrs? Did I overpay/underpay? Or did it work itself out when I filed my actual tax return? Like I said, I had no idea until now.
