Income Taxes

3 Months Ended

Mar. 31, 2024

Income Tax Disclosure [Abstract]

Income Taxes

Income Taxes

The Company's effective tax rate was 32% and 2% for the three-month periods ended March 31, 2024 and April 2, 2023, respectively.

The Company has defined its major tax jurisdictions as the United States, Ireland, China, Japan, and Korea, and within the United States, Massachusetts. The statutory tax rate is 12.5% in Ireland, 25% in China, 34.6% in Japan, and 21% in Korea, compared to the U.S. federal statutory corporate tax rate of 21%. These foreign tax rate differences resulted in a favorable impact to the effective tax rate for both the three-month periods ended March 31, 2024 and April 2, 2023.

The Company recorded a net discrete tax expense totaling $3,085,000 for the three-month period ended March 31, 2024, and a net discrete tax benefit totaling $3,594,000 for the same period in 2023.

Discrete tax items for the three-month period ended March 31, 2024 included (1) an increase in tax expense of $1,123,000 related to stock-based compensation; (2) an increase in tax expense of $458,000 related to state tax matters; (3) an increase in tax expense of $458,000 for interest expense related to tax reserves; and (4) a net increase in tax expense of $1,046,000 for other tax matters.

Discrete tax items for the three-month period ended April 2, 2023 included (1) an increase in tax expense of $1,068,000 related to stock-based compensation; (2) a decrease in tax expense of $2,292,000 for releasing tax reserves on state tax credits; (3) a decrease in tax expense of $2,198,000 for adjustments to certain deferred tax assets; and (4) a decrease in tax expense of $172,000 for return-to-provision adjustments.

The Company’s reserve for income taxes, including gross interest and penalties, was $30,511,000 as of March 31, 2024, of which $28,144,000 was classified as a non-current liability and $2,367,000 was classified as an offset to deferred tax assets. If the Company’s tax positions were sustained or the statutes of limitations related to certain positions expired, these reserves would be released and income tax expense would be reduced in a future period.

Within the United States, the tax years 2020 through 2022 remain open to examination by the IRS, and 2019 through 2022 remain open to examination by various state tax authorities. The tax years 2017 through 2023 remain open to examination by various international taxing authorities in other jurisdictions in which the Company operates.

In October 2021, more than 135 countries and jurisdictions agreed to participate in a "two-pillar" international tax approach developed by the Organisation for Economic Co-operation and Development (OECD), which includes establishing a global minimum corporate tax rate of 15%. The OECD published "Tax Challenges Arising from the Digitalisation of the Economy — Global Anti-Base Erosion Model Rules (Pillar Two)" in December 2021 and subsequently issued additional commentary and administrative guidance clarifying several aspects of the model rules. Since the model rules have been released, many countries have now enacted Pillar Two-related laws, some of which became effective January 1, 2024, and it is anticipated that more countries will follow suit throughout 2024. As of March 31, 2024, the Company does not expect Pillar Two taxes to have a significant impact on its 2024 financial statements.