If you earn both W-2 wages and 1099 income, adjusting your withholding on Form W-4 may be beneficial to help account for taxes (ex: self-employment and income taxes) owed on your 1099 income which are not ordinarily withheld.

If your predominant source of income is through W-2 wages OR you have multiple sources of income including W-2 wages and you find you’re still owing quite a bit of taxes for the prior tax year at tax time, it may be prudent to re-evaluate your tax withholding on your Form W-4.