How do I and what do I use to calculate how much I will be getting back from claimimg my son? It is only an individual tax return. So I was wondering how I would have to calculate what I would be getting back off just him? Not all together. I know What I will be getting back from what I have put in. I will be getting taxes back, not owing. So, how do they calculate and know what to do to figure it out:rolleyes: ?

Depends on your marginal tax rate.

That the tax rate you pay on the last dollar you earn in the year.

You may be eligible for Head of Household status (if you are Single), which means deduction increases by $2,500. You get a exemption for your child, which means deduction increases by $3,400. So your taxable income decreases by $5,900.
Then your EIC will increase. Then you can get Child Tax Credit or Additional Child Tax Credit.

MukatA makes some good points.