KPMG LLP Aon Center Suite 5500 200 E. Randolph Street Chicago, IL 60601-6436

Consent of Independent Registered Public Accounting Firm

We consent to the use of our report dated April 26, 2024, with respect to the financial statements and financial highlights of Nuveen California Select Tax-Free Income Portfolio.

Chicago, Illinois

June 26, 2025

KPMG LLP, a Delaware limited liability partnership and a member firm of

the KPMG global organization of independent member firms affiliated with

KPMG International Limited, a private English company limited by guarantee.

CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM

We hereby consent to the incorporation by reference in this Registration Statement on Form N-2 (No. 333-271871) of Nuveen California Select Tax-Free Income Portfolio of our report dated April 25, 2025, relating to the financial statements and financial highlights which appears in this Form N-CSR.

/s/ PricewaterhouseCoopers LLP

Chicago, Illinois

May 7, 2025