Answer:
$50,400
Step-by-step explanation:
Lyons company needs to recognize $126,000 x 40% (tax rate) = $50,400 as deferred tax liability at 12/31/2020.
Deferred tax temporary differences exist because sometimes US GAAP rules are not consistent with the rules that the IRS uses to determine the current taxes of a firm. E.g. US GAAP does not recognize expensing the purchase of assets, but the IRS does. So you need to depreciate the assets in your accounting records, but the ax benefits have already been taken by the firm in the first year.