If my husband has back childsupport and we file federal taxes jointly, will that effect how much I get back?

Before we were married he wasn't getting a tax return because all of it went to pay off his back childsupport. I have always gotten a tax return. I am wondering if I file jointly with him if they will take all of our taxes or my portion of it will be returned to me? I am trying to figure if it would be best for... show more Before we were married he wasn't getting a tax return because all of it went to pay off his back childsupport. I have always gotten a tax return. I am wondering if I file jointly with him if they will take all of our taxes or my portion of it will be returned to me? I am trying to figure if it would be best for me to file jointly or seperately.
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