Jenkins calculates income tax payable by applying the relevant tax rates to each year's operating income (loss) and adjusting for any carrybacks. The resulting amount is $480,000.
In its 2006 balance sheet, Jenkins Productions should report $480,000 as current income tax payable. To arrive at this figure, one needs to calculate the income tax for each year based on the enacted tax rates. In 2004, the tax rate was 35%, so the tax on the operating income of $450,000 is $450,000 * 35% = $157,500.
In 2005, since there was an operating loss of $1,050,000, Jenkins elected to carry back the loss to 2004, resulting in a tax benefit of $1,050,000 * 35% = $367,500.
In 2006, with a tax rate of 40%, the tax on the operating income of $1,800,000 is $1,800,000 * 40% = $720,000.
Now, subtract the tax benefit from the 2005 loss carryback from the tax on the 2006 income:
$720,000 - $367,500 = $352,500.
Finally, add the taxes from 2004 and the adjusted tax for 2006: $157,500 + $352,500 = $510,000.
However, since the tax benefit from the loss carryback cannot exceed the tax paid in 2004, the current income tax payable in 2006 is capped at $480,000 (the tax paid in 2004). Therefore, Jenkins should report $480,000 as current income tax payable in its 2006 balance sheet.