EX-99.8 10 consentofpublicaccountingf.htm EX-99.8

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EXHIBIT 99.8

Consent of Independent Registered Public Accounting Firm

We consent to the reference to our Firm under the caption “Interest of Experts”, which appears in the Annual Information Form in Exhibit 99.1, and to the incorporation by reference in the following Registration Statements:

1.Form S-8 no. 333-273050

2.Form F-10 no. 333-278270

of ATS Corporation (the “Company”) and the use herein in this Annual Report on Form 40-F/A of our reports dated May 29, 2025, with respect to the consolidated statements of financial position as of March 31, 2025 and 2024 and the consolidated statements of income (loss), comprehensive income, changes in equity and cash flows for each of the years ended March 31, 2025,

and the effectiveness of internal control over financial reporting of the Company as of March 31, 2025.

/s/ Ernst & Young LLP

Chartered Professional Accountants,

Licensed Public Accountants

Toronto, Canada

May 29, 2025