My spouse is quitting her job to take care of our baby. Should I change my exemptions to claim her as an exemption?

[bobby-lindsey]

We are going to be having a baby later this year and my wife is going to be quitting her job a few months before. She will make over $4000 this year but will receive more than half of her income from me. 

[IreneS · Accepted solution]

No - Your wife is not a dependent.

You could change your exemptions so that less or more withholding is taken from your paycheck.  For a discussion of this topic, see the article:  Top 5 Reasons to Adjust Your W-4 Withholding

Regardless of whether your wife is working, you would still file a joint return.  Your wife does not become a dependent when she quits work, however, your baby will be and may also qualify you for the Child Tax Credit, Child Care Tax Credit and others.

[Edited | 4/8/2020 |  9:26am PDT]

[fanfare]

your spouse is not a dependent. Where did you get that idea?