Income Taxes (Tables)

12 Months Ended

Dec. 31, 2014

Income Taxes [Abstract]

Difference Between AB Holding's Effective Tax Rates and the UBT Statutory Tax Rate

The principal reasons for the difference between AB Holding’s effective tax rates and the UBT statutory tax rate of 4.0% are as follows:

	Years Ended December 31,
	2014						2013						2012
	(in thousands)
UBT statutory rate		$	8,131		4.0	%		$	7,490		4.0	%		$	2,832		4.0	%
Federal tax on partnership gross business income			22,131		10.9				19,944		10.7				19,348		27.3
State income taxes			332		0.2				466		0.3				374		0.6
Credit for UBT paid by AB			(8,131	)	(4.0	)			(7,490	)	(4.0	)			(2,832	)	(4.0	)
Income tax expense and effective tax rate		$	22,463		11.1			$	20,410		11.0			$	19,722		27.9

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

AB Holding’s income tax is computed by multiplying certain AB qualifying revenues (primarily U.S. investment advisory fees and brokerage commissions) by AB Holding’s ownership interest in AB, multiplied by the 3.5% tax rate. AB Holding Units in AB’s consolidated rabbi trust are not treated as outstanding for purposes of calculating AB Holding’s ownership interest in AB.

	Years Ended December 31,									% Change
	2014			2013			2012			2014-13			2013-12
	(in thousands)
Net income attributable to AB Unitholders	$	570,383		$	517,676		$	188,916			10.2	%		174.0	%
Multiplied by: weighted average equity ownership interest		35.6	%		35.9	%		37.5	%
Equity in net income attributable to AB Unitholders	$	203,277		$	185,912		$	70,807			9.3			162.6
AB qualifying revenues	$	2,153,317		$	2,041,642		$	1,930,154			5.5			5.8
Multiplied by: weighted average equity ownership interest for calculating tax		29.4	%		27.9	%		28.7	%
Multiplied by: federal tax		3.5	%		3.5	%		3.5	%
Federal income taxes		22,131			19,944			19,348
State income taxes		332			466			374
Total income taxes	$	22,463		$	20,410		$	19,722			10.1			3.5