CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the use in this Registration Statement No. 333-295035 on Form S-6 of our report dated May 13, 2026, relating to the financial statement of FT 12974, comprising Municipal Income ETF Portfolio, Series 23, one of the series constituting the FT Series, appearing in the Prospectus, which is a part of such Registration Statement, and to the reference to us under the heading "Experts" in such Prospectus.

/s/ DELOITTE & TOUCHE LLP

Chicago, Illinois

May 13, 2026