Exhibit 23.3

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We consent to the incorporation by reference in this Pre-Effective Amendment No. 1 to Registration Statement No. 333-190950 on Form S-1 of our report dated February 28, 2013, relating to the consolidated financial statements and financial statement schedule of Great-West Life & Annuity Insurance Company and subsidiaries (which report expresses an unqualified opinion on the financial statements and financial statement schedule and includes an explanatory paragraph referring to the retrospective adoption of a change in accounting for costs associated with acquiring or renewing insurance contracts), appearing in the Annual Report on Form 10-K of Great-West Life & Annuity Insurance Company and subsidiaries for the year ended December 31, 2012, and to the reference to us under the heading “Experts” in the Prospectus, which is part of such Registration Statement.

/s/ DELOITTE & TOUCHE LLP

Denver, Colorado

December 20, 2013