You can get credit for paying current child support, however you do not get credit for not paying child support and accumulating arrears. The credit is called the "Smith calculation" and applies to current child support that is actually being paid, not arrears representing child support that you did not pay. It would not hurt to ask the judge to allow you credit if you are paying, it is a court of equity, but my belief is that you will not get the deduction. You should run a guideline calculation both ways and see how much it really changes the new support obligation. It is quite possible that it would not make much of a difference anyway.
Answered on Mar 31st, 2013 at 6:38 PM