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Income Taxes | 3 Months Ended
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Mar. 31, 2024
Income Taxes |
Income Taxes | Note 6—Income Taxes ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three Months Ended | ​
​ |  | March 31, |
​ | ​ | 2024 | ​ | 2023 | ​
Provision for income taxes | ​ | $ | (110.7) | ​ | $ | (117.2) | ​
Effective tax rate | ​ |  | 16.7 | % |  | 20.9 | %
​ For the three months ended March 31, 2024 and 2023, stock option exercise activity had the impact of decreasing our Provision for income taxes by $29.7 and $17.1, respectively, and decreasing our effective tax rate by approximately 450 basis points and 310 basis points, respectively, due to the recognition of excess tax benefits within Provision for income taxes in the accompanying Condensed Consolidated Statements of Income. In addition, for the three months ended March 31, 2024, a discrete tax benefit of $18.6, related to the settlement of tax audits and associated lapses of statutes of limitation, along with a difference in a non-U.S. tax filing position, had the effect of decreasing our effective tax rate by approximately 280 basis points. Acquisition-related expenses incurred during the three months ended March 31, 2023 had an immaterial effect on our effective tax rate. ​ The United States federal government enacted the Tax Cuts and Jobs Act (“Tax Act”) in December 2017. As a result, in 2017, the Company recorded a transition tax (“Transition Tax”) related to the deemed repatriation of the accumulated unremitted earnings and profits of the Company’s foreign subsidiaries. The Company expects to pay its seventh annual installment of the Transition Tax, net of applicable tax credits and deductions, in the second quarter of 2024, and will pay the balance of the Transition Tax, net of applicable tax credits and deductions, in 2025, as permitted under the Tax Act. The current and long-term portions of the Transition Tax are recorded in Accrued income taxes and Other long-term liabilities, respectively, on the Condensed Consolidated Balance Sheets as of March 31, 2024 and December 31, 2023. ​ The Company operates in the U.S. and numerous foreign taxable jurisdictions, and at any point in time has numerous audits underway at various stages of completion. With few exceptions, the Company is subject to income tax examinations by tax authorities for the years 2017 and after. The Company is generally not able to precisely estimate the ultimate settlement amounts or timing until the close of an audit. The Company evaluates its tax positions and establishes liabilities for uncertain tax positions that may be challenged by tax authorities and may not be fully sustained, despite the Company’s belief that the underlying tax positions are fully supportable. As of March 31, 2024, the amount of unrecognized tax benefits, including penalties and interest, which if recognized would impact the effective tax rate, was approximately $201.5. Unrecognized tax benefits are reviewed on an ongoing basis and are adjusted for changing facts and circumstances, including the progress of tax audits and the closing of statutes of limitations. Based on information currently available, management anticipates that over the next 12-month period, audit activity could be completed and statutes of limitations may close relating to existing unrecognized tax benefits of approximately $24.8. ​ Inflation Reduction Act of 2022 ​ On August 16, 2022, the President of the United States signed into law the Inflation Reduction Act of 2022 (the “IRA”), a tax and spending package that introduces several tax-related provisions, including a 15% corporate alternative minimum tax (“CAMT”) on certain large corporations and a 1% excise tax on certain corporate stock repurchases. Companies are required to reassess their valuation allowances for certain affected deferred tax assets in the period of enactment but do not need to remeasure deferred tax balances for the related tax accounting implications of the CAMT. The IRA provisions, which became effective for Amphenol beginning on January 1, 2023, did not have a material impact on the Company during the three months ended March 31, 2024 and 2023. While the full impact of these provisions in the future depends on several factors, including interpretive regulatory guidance, which has not yet been released, the Company does not currently believe that the provisions of the IRA, including several other non-tax related provisions, will have a material impact on its financial condition, results of operations, liquidity and cash flows.

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