No. Child support payments are not subject to tax. The IRS states that you can't deduct alimony or separate maintenance payments made under a divorce or separation agreement executed after 2018.A person making qualified alimony payments can deduct them. Child support doesn;t take your taxes. They may intercept a refund if you are in serious enough arrears to be referred to the offset program. In the US, child support payments whether court ordered or not, are never tax deductible (and not taxable). . Child support is never deductible and isn't considered income. If you're about to go through divorce, you have questions! Alimony payments are no longer deductible to the payer and no longer required to be claimed in the taxable income of the recipient). Child Support Services (CSS) are available to anyone who needs help collecting child support through a network of state and locally run offices.