He will get $5751 in earned income tax credit and $1800 additional child tax credit, for a total of $7551 as a refund. If he had withholding he'll get that back, too.
Normally the IRS will not withhold his refund for back child support. The states may do that, except for states like TN which do not have a state income tax.
Keep working, folks. At least 42 current and future democrats are counting on you.
When welfare was locally controlled you go to make one “mistake” only. After that you had to pay for the second one on your own.