The components of income (loss) before income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,				Six Months Ended March 31,
	2021		2020		2021		2020

Domestic	$	10,930	$	2,297	$	14,244	$	(4,676	)
Foreign		6,449		3,808		14,661		2,267
Income (loss) before income taxes	$	17,379	$	6,105	$	28,905	$	(2,409	)

The components of the provision for (benefit from) income taxes are as follows (dollars in thousands):

	Three Months Ended March 31,						Six Months Ended March 31,
	2021			2020			2021			2020

Domestic	$	4,191		$	2,422		$	3,753		$	(942	)
Foreign		2,025			(9,129	)		(6,952	)		(2,996	)
Provision for (benefit from) income taxes	$	6,216		$	(6,707	)	$	(3,199	)	$	(3,938	)
Effective income tax rate		35.8	%		(109.9	)%		(11.1	)%		163.5	%

The effective tax rates for the periods presented are based upon estimated income for the fiscal year and the statutory tax rates enacted in the jurisdictions in which we operate. For all periods presented, the effective tax rate differs from the 21.0% statutory U.S. tax rate due to the impact of the nondeductible stock-based compensation, U.S. inclusions of global intangible low-taxed income (GILTI), and our mix of jurisdictional earnings and related differences in foreign statutory tax rates.

Our effective tax rate for the three months ended March 31, 2021 was 35.8% compared to negative 109.9% for the three months ended March 31, 2020. Consequently, our provision for income taxes for the three months ended March 31, 2021 was $6.2 million, a net change of $12.9 million from a benefit from income taxes of $6.7 million for the three months ended March 31, 2020. This difference was attributable to our composition of jurisdiction earnings, U.S. inclusions of foreign taxable income as a result of 2017 tax law changes, non-deductible compensation expenses, and an excess tax benefit of approximately $1.0 million relating to stock-based compensation.

Our effective tax rate for the six months ended March 31, 2021 was negative 11.1% compared to 163.5% for the six months ended March 31, 2020. Consequently, our benefit from income taxes for the six months ended March 31, 2021 was $3.2 million, a net change of $0.7 million from a benefit from income taxes of $3.9 million for the six months ended March 31, 2020. This difference was attributable to a $15.8 million tax benefit recorded as a result of an increase to the enacted Netherlands tax rate in the first quarter of fiscal 2021 and the realization of a $3.6 million tax benefit related to stock-based compensation in the period. This compares to a $5.0 million tax benefit realized during the six months ended March 31, 2020, which was the result of a previous change to the Netherlands enacted tax rate.

Deferred tax assets and liabilities are measured using the statutory tax rates and laws expected to apply to taxable income in the years in which the temporary differences are expected to reverse. Valuation allowances are provided against net deferred tax assets if, based upon the available evidence, it is more likely than not that some or all of the deferred tax assets will not be realized. The ultimate realization of deferred tax assets is dependent upon the generation of future taxable income and the timing of the temporary differences becoming deductible. Management considers, among other available information, scheduled reversals of deferred tax liabilities, projected future taxable income, limitations of availability of net operating loss carryforwards, and other matters in making this assessment.