If I am married and claim Single 0 on my w4, will that affect me negatively?

[happygirl2112]

Filing Jointly

[Lisa995]

That will have them take more out of your pay and give you more withholding on your tax return...which will add to your refund or reduce any balance owed.

[jerry2000]

There is nothing wrong with that. The worst that can happen is that you had too much tax withheld and all that means is that you get a bigger refund.