Claim 1 if you are single and have no children/dependents. If you claims 0 like so many ill informed people they will take out extra taxes out of your check and you will not get all of it back.
For example let's 25% of my check gets taxed when I claim 1 on my W4, and you get 30% of your check taxed when you claim 0. When tax season comes around let's say I get a 15% refund and you get a 17% refund, you got back more money than me but you also did not get back that additional 3% from the extra 5% they originally taxed on your check. So you in fact will be losing money by claiming 0.
You will get less taken out of your check if you claim 2, and I know I got less back from the IRS the one year I claimed 2, but I don't think it was a drastic difference than when I claim 1.
I dont want a refund honestly, I`m cool with owning 2-300 in Taxes if it means I can maximize my take home. I`m going to Claim 2 and see what happens come tax season.