Income Taxes (Tables)

3 Months Ended

Mar. 31, 2021

Income Tax Disclosure [Abstract]

Computation of Effective Income Tax Rate and Changes in Components of Income Tax

	Three Months Ended March 31,
	2021			2020			% Change
	(in thousands)
Net income attributable to AB Unitholders	$	244,131		$	194,320		25.6	%
Multiplied by: weighted average equity ownership interest	36.4		%	36.0		%
Equity in net income attributable to AB Unitholders	$	88,907		$	69,914		27.2
AB qualifying revenues	$	706,392		$	702,340		0.6
Multiplied by: weighted average equity ownership interest for calculating tax	30.6		%	30.6		%
Multiplied by: federal tax	3.5		%	3.5		%
Federal income taxes	7,572			7,515
State income taxes	248			140
Total income taxes	$	7,820		$	7,655		2.2
Effective tax rate	8.8		%	10.9		%