Simply put, payments designated as child support cannot be counted as alimony. No. Child support payments are not subject to tax.This calculator provides an estimate for a single source of income. These forms allow parents, families, and employers to provide the Child Support Division with additional information so we can better serve you. In Texas, child support payments are not taxdeductible. Unlike alimony, the paying parent cannot deduct child support payments on their tax return. Calculating child support in Texas is supposed to a relatively simple procedure using a statespecified formula, which includes the paying spouse's net income. We'll guide you through the legal process, explain the guidelines, delve into child custody arrangements, and even touch on the financial obligations involved. You should have your Dallas County Child Support account number available and know the last four digits of your social security number. Keep in mind, mailed applications take longer to process than online applications.