Income Taxes

AB Holding is a “grandfathered” publicly-traded partnership (“PTP”) for federal tax purposes and, accordingly, is not subject to federal or state corporate income taxes. However, AB Holding is subject to the 4.0% New York City unincorporated business tax (“UBT”), net of credits for UBT paid by AB, and to a 3.5% federal tax on partnership gross income from the active conduct of a trade or business. AB Holding’s partnership gross income is derived from its interest in AB.

AB Holding’s federal 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 considered outstanding for purposes of calculating AB Holding’s ownership interest in AB.



	Three Months Ended March 31,
	2018			2017			% Change
	(in thousands)
Net income attributable to AB Unitholders	$	184,196		$	139,937		31.6	%
Multiplied by: weighted average equity ownership interest	35.7		%	35.5		%
Equity in net income attributable to AB Unitholders	$	65,698		$	49,666		32.3

AB qualifying revenues	$	702,919		$	546,177		28.7
Multiplied by: weighted average equity ownership interest for calculating tax	30.1		%	29.6		%
Multiplied by: federal tax	3.5		%	3.5		%
Federal income taxes	7,410			5,651
State income taxes	128			105
Total income taxes	$	7,538		$	5,756		31.0

Effective tax rate	11.5		%	11.6		%

In order to preserve AB Holding’s status as a “grandfathered” PTP for federal income tax purposes, management ensures that AB Holding does not directly or indirectly (through AB) enter into a substantial new line of business. If AB Holding were to lose its status as a “grandfathered” PTP, it would be subject to corporate income tax, which would reduce materially AB Holding’s net income and its quarterly distributions to AB Holding Unitholders.