Income Taxes (Tables)

3 Months Ended

Mar. 29, 2020

Reconciliation of Effective Tax Rate

A reconciliation of the United States federal statutory corporate tax rate to Teradyne’s effective tax rate was as follows:

	For the Three Months Ended
	March 29,			March 31,
	2020			2019
US statutory federal tax rate		21.0	%		21.0	%
Foreign taxes		(5.7	)		(3.1	)
Tax credits		(1.9	)		(3.0	)
Discrete benefit related to equity compensation		(4.1	)		(4.1	)
Discrete benefit related to release of reserves for uncertain tax positions		—			(27.6	)
Other, net		1.3			0.7
Effective tax rate		10.6	%		(16.1	)%