Answer:
Deferred tax asset balance on  December 31, 20X3 =   $115,500
Explanation:
The computation of the amount of deferred income taxes should Mill report is shown below:
<u>Year   Tax purpose   Book purpose   Difference   Deferred tax book
</u>
20X1     $400,000          $0                $400,000        $84,000
20X2    $625,000     $375,000         $250,000        $52,500
20X3     $750,000     $850,000        ($100,000)        ($21,000)
Deferred tax asset balance on  December 31, 20X3 =   $115,500