Individual Income Tax Formula . Your Turn! Xavier and his spouse earned $95,000 in salary and $8,000 in interest income duringg 2018. Their employers withheld $10,000 of federal income taxes from their paychecks during the year. They have one qualifying dependent child who lives with them. They plan to file married filing joint and have $25,000 in itemized deductions and $2,000 for the child tax credit. Determine the tax refund or taxes due. 4-20