Xavier and his wife Maria have total W$-2$ income of $$91,138.$ They will file their tax return as married filing jointly. They had a total of $$8,004$ withheld from their paychecks for federal income tax. Determine the amount of refund or additional tax due upon filing their tax return.

Note: Input your answer as a positive number.

Use the appropriate Tax Tables.

Answer is complete but not entirely correct.

Additional tax due

$$3,455$