Chuck, a single taxpayer, earns $77,200 in taxable income and $10,000 in interest from an investment in City of Heflin bonds. (Use the U.S. tax rate schedule.) Required: If Chuck earns an additional $40,300 of taxable income, what is his marginal tax rate on this income? What is his marginal rate if, instead, he had $40,300 of additional deductions?

2020 Tax Rate Schedules

Individuals

Schedule X-Single

If taxable income is over:	But not over:	The tax is:
$ 0	$ 9,875	10% of taxable income
$ 9,875	$ 40,125	$987.50 plus 12% of the excess over $9,875
$ 40,125	$ 85,525	$4,617.50 plus 22% of the excess over $40,125
$ 85,525	$163,300	$14,605.50 plus 24% of the excess over $85,525
$163,300	$207,350	$33,271.50 plus 32% of the excess over $163,300
$207,350	$518,400	$47,367.50 plus 35% of the excess over $207,350
$518,400		$156,235 plus 37% of the excess over $518,400

Schedule Y-1-Married Filing Jointly or Qualifying Widow(er)

If taxable income is over:	But not over:	The tax is:
$ 0	$ 19,750	10% of taxable income
$ 19,750	$ 80,250	$1,975 plus 12% of the excess over $19,750
$ 80,250	$171,050	$9,235 plus 22% of the excess over $80,250
$171,050	$326,600	$29,211 plus 24% of the excess over $171,050
$326,600	$414,700	$66,543 plus 32% of the excess over $326,600
$414,700	$622,050	$94,735 plus 35% of the excess over $414,700
$622,050		$167,307.50 plus 37% of the excess over $622,050

Schedule Z-Head of Household

If taxable income is over:	But not over:	The tax is:
$ 0	$ 14,100	10% of taxable income
$ 14,100	$ 53,700	$1,410 plus 12% of the excess over $14,100
$ 53,700	$ 85,500	$6,162 plus 22% of the excess over $53,700
$ 85,500	$163,300	$13,158 plus 24% of the excess over $85,500
$163,300	$207,350	$31,830 plus 32% of the excess over $163,300
$207,350	$518,400	$45,926 plus 35% of the excess over $207,350
$518,400		$154,793.50 plus 37% of the excess over $518,400

Schedule Y-2-Married Filing Separately

If taxable income is over:	But not over:	The tax is:
$ 0	$ 9,875	10% of taxable income
$ 9,875	$ 40,125	$987.50 plus 12% of the excess over $9,875
$ 40,125	$ 85,525	$4,617.50 plus 22% of the excess over $40,125
$ 85,525	$163,300	$14,605.50 plus 24% of the excess over $85,525
$163,300	$207,350	$33,271.50 plus 32% of the excess over $163,300
$207,350	$311,025	$47,367.50 plus 35% of the excess over $207,350
$311,025		$83,653.75 plus 37% of the excess over $311,025