# EDGAR Filing Document

**Accession Number:** 0000883618
**File Stem:** 0001999371-26-004839
**Filing Date:** 2026-3
**Character Count:** 42440
**Document Hash:** f425c92ca13471a19f94c482d7baecef
**Contains OCR:** False
**Source Format:** 

## Filing Content

## Filing Summary
**0001999371-26-004839.hdr.sgml**: 20260302

**ACCESSION NUMBER**: 0001999371-26-004839

**CONFORMED SUBMISSION TYPE**: POS EX

**PUBLIC DOCUMENT COUNT**: 3

**FILED AS OF DATE**: 20260302

**DATE AS OF CHANGE**: 20260302

**EFFECTIVENESS DATE**: 20260302

**FILER**: 

**COMPANY DATA:**
- **COMPANY CONFORMED NAME:** NUVEEN SELECT TAX FREE INCOME PORTFOLIO
- **CENTRAL INDEX KEY:** 0000883618

**ORGANIZATION NAME:**
- **EIN:** 363806843
- **FISCAL YEAR END:** 0331

**FILING VALUES:**
- **FORM TYPE:** POS EX
- **SEC ACT:** 1933 Act
- **SEC FILE NUMBER:** 333-288619
- **FILM NUMBER:** 26707383

**BUSINESS ADDRESS:**
- **STREET 1:** 333 W WACKER DR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606
- **BUSINESS PHONE:** 3129178200

**MAIL ADDRESS:**
- **STREET 1:** 333 W WACKER DR
- **CITY:** CHICAGO
- **STATE:** IL
- **ZIP:** 60606

**As filed with the Securities and Exchange Commission on March 2, 2026**

File No. 333-288619

**UNITED STATES**

**SECURITIES AND EXCHANGE COMMISSION**<br> **Washington, D.C. 20549** 

**FORM N-14**

**REGISTRATION STATEMENT** 

**UNDER<br> THE SECURITIES ACT OF 1933**

☐ Pre-Effective Amendment No.

☒ Post-Effective Amendment No. 2

**NUVEEN SELECT TAX-FREE INCOME PORTFOLIO** 

(Exact Name of Registrant as Specified in Charter)

**333 West Wacker Drive**

**Chicago, Illinois 60606**

(Address of Principal Executive Offices: Number, Street, City, State, Zip Code)

**(800) 257-8787**

(Area Code and Telephone Number)

**Mark L. Winget**

**Vice President and Secretary**

**Nuveen Investments**

**333 West Wacker Drive**

**Chicago, Illinois 60606**

(Name and Address of Agent for Service)

Copies to:

---

| | |
|:---|:---|
| &nbsp;&nbsp;**Deborah Bielicke Eades** <br> **Vedder Price P.C.** <br> **222 North LaSalle Street** <br> **Chicago, Illinois 60601**  | &nbsp;&nbsp;**Eric F. Fess** <br> **Chapman and Cutler LLP** <br> **320 South Canal Street, 27th Floor** <br> **Chicago, Illinois 60606**  |

---

**EXPLANATORY NOTE**

The Joint Proxy Statement/Prospectus and Statement of Additional Information, each in the form filed on August 26, 2025 pursuant to Rule 424(b)(3) of the General Rules and Regulations under the Securities Act of 1933, as amended (File No. 333-288619), are incorporated herein by reference.

This amendment is being filed for the sole purpose of adding to Part C of the Registration Statement the executed tax opinion of Vedder Price P.C., supporting the tax matters discussed in the Joint Proxy Statement/Prospectus as Exhibit 12.

**PART C<br> OTHER INFORMATION**

**Item 15. Indemnification**

Section 4 of Article XII of Registrant's Declaration of Trust, as amended, provides as follows:

Subject to the exceptions and limitations contained in this Section 4, every person who is, or has been, a Trustee, officer, employee or agent of the Trust, including persons who serve at the request of the Trust as directors, trustees, officers, employees or agents of another organization in which the Trust has an interest as a shareholder, creditor or otherwise (hereinafter referred to as a "Covered Person"), shall be indemnified by the Trust to the fullest extent permitted by law against liability and against all expenses reasonably incurred or paid by him in connection with any claim, action, suit or proceeding in which he becomes involved as a party or otherwise by virtue of his being or having been such a Trustee, director, officer, employee or agent and against amounts paid or incurred by him in settlement thereof.

No indemnification shall be provided hereunder to a Covered Person:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) against any liability to the Trust or its Shareholders by reason of a final adjudication by the court or other body before which the proceeding was brought that he engaged in willful misfeasance, bad faith, gross negligence or reckless disregard of the duties involved in the conduct of his office;

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) with respect to any matter as to which he shall have been finally adjudicated not to have acted in good faith in the reasonable belief that his action was in the best interests of the Trust; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(c) in the event of a settlement or other disposition not involving a final adjudication (as provided in paragraph (a) or (b)) and resulting in a payment by a Covered Person, unless there has been either a determination that such Covered Person did not engage in willful misfeasance, bad faith, gross negligence or reckless disregard of the duties involved in the conduct of his office by the court or other body approving the settlement or other disposition or a reasonable determination, based on a review of readily available facts (as opposed to a full trial-type inquiry), that he did not engage in such conduct:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(i) by a vote of a majority of the Disinterested Trustees acting on the matter (provided that a majority of the Disinterested Trustees then in office act on the matter); or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(ii) by written opinion of independent legal counsel.

The rights of indemnification herein provided may be insured against by policies maintained by the Trust, shall be severable, shall not affect any other rights to which any Covered Person may now or hereafter be entitled, shall continue as to a person who has ceased to be such a Covered Person and shall inure to the benefit of the heirs, executors and administrators of such a person. Nothing contained herein shall affect any rights to indemnification to which Trust personnel other than Covered Persons may be entitled by contract or otherwise under law.

Expenses of preparation and presentation of a defense to any claim, action, suit or proceeding subject to a claim for indemnification under this Section 4 shall be advanced by the Trust prior to final disposition thereof upon receipt of an undertaking by or on behalf of the recipient to repay such amount if it is ultimately determined that he is not entitled to indemnification under this Section 4, provided that either:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(a) such undertaking is secured by a surety bond or some other appropriate security or the Trust shall be insured against losses arising out of any such advances; or

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(b) a majority of the Disinterested Trustees acting on the matter (provided that a majority of the Disinterested Trustees then in office act on the matter) or independent legal counsel in a written opinion shall determine, based upon a review of the readily available facts (as opposed to a full trial-type inquiry), that there is reason to believe that the recipient ultimately will be found entitled to indemnification.

As used in this Section 4, a "Disinterested Trustee" is one (x) who is not an Interested Person of the Trust (including, as such Disinterested Trustee, anyone who has been exempted from being an Interested Person by any rule, regulation or order of the Commission), and (y) against whom none of such actions, suits or other proceedings or another action, suit or other proceeding on the same or similar grounds is then or has been pending.

As used in this Section 4, the words "claim," "action," "suit" or "proceeding" shall apply to all claims, actions, suits, proceedings (civil, criminal, administrative or other, including appeals), actual or threatened; and the word "liability" and "expenses" shall include without limitation, attorneys' fees, costs, judgments, amounts paid in settlement, fines, penalties and other liabilities.

The trustees and officers of the Registrant are covered by joint errors and omissions insurance policies against liability and expenses of claims of wrongful acts arising out of their position with the Registrant and other Nuveen funds, subject to such policies' coverage limits, exclusions and deductibles.

Insofar as the indemnification for liabilities arising under the Securities Act of 1933, as amended, (the "1933 Act") may be permitted to the officers, trustees or controlling persons of the Registrant pursuant to the Declaration of Trust of the Registrant or otherwise, the Registrant has been advised that in the opinion of the Securities and Exchange Commission such indemnification is against public policy as expressed in the 1933 Act and is, therefore, unenforceable. In the event that a claim for indemnification against such liabilities (other than the payment by the Registrant of expenses incurred or paid by an officer or trustee or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such officer, trustee or controlling person in connection with the securities being registered, the Registrant will, unless in the opinion of its counsel the matter has been settled by controlling precedent, submit to a court of appropriate jurisdiction the question of whether such indemnification by it is against public policy as expressed in the 1933 Act and will be governed by the final adjudication of such issue.

**Item 16. Exhibits**

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| | |
|:---|:---|
| (1) | [Declaration of Trust (as amended) dated January 29, 1992](http://www.sec.gov/Archives/edgar/data/883618/000119312512503463/d446473dex99a.htm).<sup>(1)</sup> |
| (2) | [Amended and Restated By-Laws of Registrant, dated February 28, 2024](http://www.sec.gov/Archives/edgar/data/1216583/000119312524060599/d682750dex31.htm).<sup>(2)</sup> |
| (3) | Not applicable. |
| (4) | Form of Agreement and Plan of Reorganization is filed as Appendix A to the Joint Proxy Statement/Prospectus constituting Part A of the Registration Statement. |
| (5) | Not applicable. |
| (6)(a) | [Investment Management Agreement, dated October 1, 2014](http://www.sec.gov/Archives/edgar/data/883618/000119312521196361/d167176dex996a.htm).<sup>(3)</sup> |
| (6)(b) | [Continuance of Investment Management Agreement, dated May 1, 2024](http://www.sec.gov/Archives/edgar/data/1216583/000199937125004713/ex99-6k.htm).<sup>(5)</sup> |
| (6)(c) | [Investment Sub-Advisory Agreement, dated October 1, 2014](http://www.sec.gov/Archives/edgar/data/818851/000119312514363348/d793999dex99g2.htm).<sup>(7)</sup> |
| (6)(d) | [Notice of Continuance of Investment Sub-Advisory Agreement, dated May 1, 2024](http://www.sec.gov/Archives/edgar/data/1216583/000199937125004713/ex99-6v.htm).<sup>(5)</sup> |
| (7)(a) | [Distribution Agreement Relating to At-the-Market Offerings, dated June 9, 2023.](https://www.sec.gov/Archives/edgar/data/883618/000119312523170300/d501638dex99h1.htm)<sup>(8)</sup> |
| (7)(b) | [Dealer Agreement Relating to At-the-Market Offerings by Nuveen Select Tax-Free Income Portfolio, dated June 9, 2023.](https://www.sec.gov/Archives/edgar/data/883618/000119312523170300/d501638dex99h2.htm)<sup>(8)</sup> |
| (8) | [Nuveen Fund Board Voluntary Deferred Compensation Plan for Independent Directors and Trustees, effective as of November 1, 2021](http://www.sec.gov/Archives/edgar/data/1635073/000119312522292568/d397717dex99f.htm).<sup>(11)</sup> |
| (9)(a) | [Amended and Restated Master Custodian Agreement between the Nuveen Investment Companies and State Street Bank and Trust Company, dated July 15, 2015](http://www.sec.gov/Archives/edgar/data/1216583/000119312516792043/d289015dex999a.htm).<sup>(4)</sup> |
| (9)(b) | [Amendment and revised Appendix A to Amended and Restated Master Custodian Agreement, dated July 31, 2020.](http://www.sec.gov/Archives/edgar/data/1450445/000119312520236529/d99489dex99j2.htm)<sup>(9)</sup> |
| (9)(c) | [Amendment and revised Appendix A, effective September 8, 2022, to the Amended and Restated Master Custodian Agreement](http://www.sec.gov/Archives/edgar/data/1380786/000119312522314076/d403340dex99g3.htm).<sup>(10)</sup> |
| (10) | Not applicable. |
| (11) | [Opinion and Consent of Counsel](http://www.sec.gov/Archives/edgar/data/883618/000199937125011769/ex-11.htm).<sup>(14)</sup> |
| (12) | [Opinion and Consent of Vedder Price P.C. supporting the tax matters discussed in the Joint Proxy Statement/Prospectus is filed herewith.](ex99-12.htm) |
| (13)(a) | [Transfer Agency and Service Agreement, dated June 15, 2017 between Registrant and Computershare Inc. and Computershare Trust Company, N.A.](http://www.sec.gov/Archives/edgar/data/1195738/000119312517345678/d266913dex99k1.htm)<sup>(6)</sup> |
| (13)(b) | [Amendment and Schedule A to Transfer Agency and Service Agreement, dated September 7, 2017.](http://www.sec.gov/Archives/edgar/data/1195738/000119312517345678/d266913dex99k2.htm)<sup>(6)</sup> |
| (13)(c) | [Second Amendment and updated Schedule A, dated February 26, 2018, to the Transfer Agency and Service Agreement dated June 15, 2017 between the Registrant and Computershare Inc. and Computershare Trust Company, N.A.](http://www.sec.gov/Archives/edgar/data/1450445/000119312520236529/d99489dex99k3.htm)<sup>(9)</sup> |

---

---

| | |
|:---|:---|
| (13)(d) | [Third Amendment and updated Schedule A, dated May 11, 2020 to the Transfer Agency and Service Agreement dated June 15, 2017 between the Registrant and Computershare Inc. and Computershare Trust Company, N.A.](http://www.sec.gov/Archives/edgar/data/1450445/000119312520236529/d99489dex99k4.htm)<sup>(9)</sup> |
| (13)(e) | [Amended and Restated Schedule A, effective March 28, 2023, to the Transfer Agency and Service Agreement](http://www.sec.gov/Archives/edgar/data/883618/000119312523132482/d501638dex99k5.htm).<sup>(12)</sup> |
| (13)(f) | [Rule 12d1-4 Investment Agreement between RiverNorth Funds, as Acquiring Funds, and Nuveen CEFs, as Acquired Funds, dated January 19, 2022](http://www.sec.gov/Archives/edgar/data/883618/000119312523132482/d501638dex99k6.htm).<sup>(12)</sup> |
| (14)(a) | [Consent of PricewaterhouseCoopers LLP, independent registered public accounting firm](http://www.sec.gov/Archives/edgar/data/883618/000199937125011769/ex14a.htm).<sup>(14)</sup> |
| (14)(b) | [Consent of KPMG LLP, independent registered public accounting firm](http://www.sec.gov/Archives/edgar/data/883618/000199937125011769/ex14b.htm).<sup>(14)</sup> |
| (15) | Not applicable. |
| (16) | [Powers of Attorney](http://www.sec.gov/Archives/edgar/data/883618/000199937125008962/ex16.htm).<sup>(13)</sup> |
| (17) | Form of Proxy is filed herein and appears following the Joint Proxy Statement/Prospectus constituting Part A of the Registration Statement. |
| (18) | [Filing Fee Table](https://www.sec.gov/Archives/edgar/data/883618/000199937125021295/ex99-18.htm).<sup>(15)</sup> |

---

(1) Filed on December 14, 2012 as an exhibit to the Registrant's Registration Statement on Form N-2 (File No. 333-185494) and incorporated by reference herein.

(2) Filed on March 6, 2024 as an exhibit to the Registrant's Form 8-K (File No. 811-06548) and incorporated by reference herein.

(3) Filed on June 22, 2021 as an exhibit to the Registrant's Registration Statement on Form N-14 (File No. 333-257297) and incorporated by reference herein.

(4) Filed on December 13, 2016 as an exhibit to Nuveen Preferred & Income Opportunities Fund's Registration Statement on Form N-14 (File No. 333-215072) and incorporated by reference herein.

(5) Filed on April 24, 2025 as an exhibit to the Registrant's Registration Statement on Form N-14 (File No. 333-286736) and incorporated by reference herein.

(6) Filed on October 1, 2018 as an exhibit to Nuveen Dow 30SM Dynamic Overwrite Fund's Registration Statement on Form N-2 (File No. 333-226218) and incorporated by reference herein.

(7) Filed on October 3, 2014 as an exhibit to Nuveen California Municipal Value Fund's Registration Statement on Form N-2 (File No. 333-187008) and incorporated herein by reference.

(8) Filed on June 20, 2023 as an exhibit to the Registrant's Registration Statement on Form N-2 (File No. 333-271575) and incorporated by reference herein.

(9) Filed on September 1, 2020 as an exhibit to Post-Effective Amendment No. 1 to Nuveen AMT-Free Municipal Value Fund's Registration Statement on Form N-2 (File No. 333-223524) and incorporated by reference herein.

(10) Filed on December 29, 2022 as an exhibit to Post-Effective Amendment No. 81 to Nuveen Investment Trust V's Registration Statement on Form N-1A (File Nos. 333-138592) and incorporated herein by reference.

(11) Filed as an exhibit to Nuveen Global Net Zero Transition ETF's Registration Statement on Form N-1A (File Nos. 333-212032) and incorporated herein by reference.

(12) Filed on May 2, 2023 as an exhibit to the Registrant's Registration Statement on Form N-2 (File Nos. 333-271575) and incorporated herein by reference.

(13) Filed on July 10, 2025 as an exhibit to the Registrant's Registration Statement on Form N-14 (File No. 333-288619) and incorporated herein by reference.

(14) Filed on August 20, 2025 as an exhibit to the Registrant's Registration Statement on Form N-14 (File No. 333-288619) and incorporated herein by reference.

(15) Filed on December 29, 2025 as an exhibit to Post-Effective Amendment No. 1 to the Registrant's Registration Statement on Form N-14 (File No. 333-288619) and incorporated herein by reference.

**Item 17. Undertakings**

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(1) The undersigned Registrant agrees that prior to any public reoffering of the securities registered through the use of a prospectus which is a part of this registration statement by any person or party who is deemed to be an underwriter within the meaning of Rule 145(c) of the Securities Act, the reoffering prospectus will contain the information called for by the applicable registration form for reofferings by persons who may be deemed underwriters, in addition to the information called for by the other items of the applicable form.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;(2) The undersigned Registrant agrees that every prospectus that is filed under paragraph (1) above will be filed as a part of an amendment to the registration statement and will not be used until the amendment is effective, and that, in determining any liability under the Securities Act, each post-effective amendment shall be deemed to be a new registration statement for the securities offered therein, and the offering of the securities at that time shall be deemed to be the initial bona fide offering of them.

**SIGNATURES**

As required by the Securities Act of 1933, the Registrant has duly caused this registration statement to be signed on its behalf by the undersigned, thereunto duly authorized in the City of Chicago and the State of Illinois, on the 2nd day of March, 2026.

---

| | |
|:---|:---|
| NUVEEN SELECT TAX-FREE INCOME PORTFOLIO | NUVEEN SELECT TAX-FREE INCOME PORTFOLIO |
| By: | /s/ Mark L. Winget |
|  | Mark L. Winget |
|  | Vice President and Secretary |

---

As required by the Securities Act of 1933, this Registrant's registration statement has been signed by the following persons in the capacities and on the dates indicated:

---

| | | | |
|:---|:---|:---|:---|
| **Signature** | **Capacity** | **Date** | **Date** |
| /s/ David J. Lamb | Chief Administrative Officer |  | March 2, 2026 |
| David J. Lamb | (principal executive officer) |  |  |
| /s/ Mark Cardella | Vice President and Controller |  | March 2, 2026 |
| Mark Cardella | (principal financial and accounting officer) |  |  |
|  | Chair of the Board and Trustee | By: | /s/ Mark L. Winget |
| Robert L. Young\* |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Mark L. Winget |
|  |  |  | &nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;Attorney-in-Fact |
|  |  |  | March 2, 2026 |
|  | Trustee |  |  |
| Joseph A. Boateng\* |  |  |  |
|  | Trustee |  |  |
| Michael A. Forrester\* |  |  |  |
|  | Trustee |  |  |
| Thomas J. Kenny\* |  |  |  |
|  | Trustee |  |  |
| Amy B.R. Lancellotta\* |  |  |  |
|  | Trustee |  |  |
| Joanne T. Medero\* |  |  |  |
|  | Trustee |  |  |
| Albin F. Moschner\* |  |  |  |
|  | Trustee |  |  |
| John K. Nelson\* |  |  |  |
|  | Trustee |  |  |
| Loren M. Starr\* |  |  |  |
|  | Trustee |  |  |
| Matthew Thornton III\* |  |  |  |
|  | Trustee |  |  |
| Terence J. Toth\* |  |  |  |
|  | Trustee |  |  |
| Margaret L. Wolff\* |  |  |  |

---

\* An original power of attorney authorizing, among others, Mark L. Winget, Kevin J. McCarthy and Mark J. Czarniecki to execute this registration statement, and amendments thereto, for each of the trustees of the Registrant on whose behalf this registration statement is filed, has been executed and filed on July 10, 2025 as an exhibit to the Registrant's Registration Statement on Form N-14 (File No. 333-288619).

**EXHIBIT INDEX**

<u>Exhibit No.</u> <u>Name of Exhibit</u> <br> [(12)](ex99-12.htm) [Opinion and Consent of Vedder Price P.C. supporting the tax matters discussed in the Joint Proxy Statement/Prospectus.](ex99-12.htm)

## Ex-12

**Exhibit 12**

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| | |
|:---|:---|
| ![](nuveenposex001.jpg) | Chicago<br>New York<br>Washington, DC<br>London<br>San Francisco<br>Los Angeles<br>Singapore<br>Dallas<br>Miami<br>vedderprice.com  |

---

January 12, 2026

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| | |
|:---|:---|
| Nuveen California Select Tax-Free Income Portfolio<br> 333 West Wacker Drive<br> Chicago, Illinois 60606<br>| Nuveen Select Tax-Free Income Portfolio<br> 333 West Wacker Drive<br> Chicago, Illinois 60606<br>|
| Nuveen New York Select Tax-Free Income Portfolio<br> 333 West Wacker Drive<br> Chicago, Illinois 60606<br>|  |

---

---

| | |
|:---|:---|
| **Re:** | **Reorganizations of Nuveen New York Select Tax-Free Income Portfolio and Nuveen California Select Tax-Free Income Portfolio into Nuveen Select Tax-Free Income Portfolio** |

---

Ladies and Gentlemen:

You have requested our opinion regarding certain U.S. federal income tax consequences of the reorganizations (each a "Reorganization" and collectively, the "Reorganizations") by and among Nuveen California Select Tax-Free Income Portfolio, a Massachusetts business trust, and Nuveen New York Select Tax-Free Income Portfolio, a Massachusetts business trust (each a "Target Fund" and collectively, the "Target Funds"), and Nuveen Select Tax-Free Income Portfolio, a Massachusetts business trust (the "Acquiring Fund"). The Target Funds and the Acquiring Fund are each referred to herein as a "Fund" and collectively, as the "Funds."

Each Reorganization contemplates the transfer of all the assets of the Target Fund to the Acquiring Fund solely in exchange for (i) voting common shares of beneficial interest, par value $0.01 per share, of the Acquiring Fund ("Acquiring Fund Shares") and (ii) the assumption by the Acquiring Fund of all the liabilities of the Target Fund. As part of each Reorganization, the Target Fund will immediately thereafter distribute pro rata to its shareholders of record all the Acquiring Fund Shares so received in complete liquidation of the Target Fund, and the Target Fund promptly thereafter will be dissolved under applicable state law. The foregoing will be accomplished pursuant to an Agreement and Plan of Reorganization, dated as of December 30, 2025 (the "Plan"), entered into by the Target Funds and the Acquiring Fund.

In rendering this opinion, we have examined the Plan and have reviewed and relied upon representations made to us by duly authorized officers of the Funds in letters dated January 12, 2026 (collectively, the "Representation Letters"). We have also examined such other agreements, documents, corporate records and other materials as we have deemed necessary in order for us to render the opinions referred to in this letter. In such review and examination, we have assumed the genuineness of all signatures, the legal capacity and authority of the parties who executed such documents, the authenticity of all documents submitted to us as originals, the conformity to originals of all documents submitted to us as copies and the authenticity of the originals of such latter documents.

222 North LaSalle Street \| Chicago, Illinois 60601 \| T +1 312 609 7500 \| F +1 312 609 5005

Vedder Price P.C. is affiliated with Vedder Price LLP, which operates in England and Wales, Vedder Price (CA), LLP, which operates in California, Vedder Price Pte. Ltd., which operates in Singapore, and Vedder Price (FL) LLP, which operates in Florida.

VP/#74648948.2

Nuveen Select Tax-Free Income Portfolio<br> Nuveen California Select Tax-Free Income Portfolio<br> Nuveen New York Select Tax-Free Income Portfolio

January 12, 2026

Our opinion is based, in part, on the assumptions that (i) each Reorganization described herein will occur in accordance with the terms of the Plan (without the waiver or modification of any terms or conditions thereof and without taking into account any amendment thereof that we have not approved) and the facts and representations set forth or referred to in this opinion letter, and that such facts and representations, as well as the facts and representations set forth in the Plan, are true, correct and complete as of the date hereof and will be true, correct and complete as of the date and time of the Closings (as defined in the Plan) (the "Effective Time") and (ii) any representation set forth in the Representation Letters qualified by knowledge, intention, belief, disclaimer of responsibility or any similar qualification is, and will be as of the Effective Time, true, correct and complete without such qualification. You have not requested that we undertake, and we have not undertaken, any independent investigation of the accuracy of the facts, representations and assumptions set forth or referred to herein.

For the purposes indicated above, and based upon the facts, assumptions and representations set forth or referred to herein, it is our opinion, with respect to each Reorganization, that for U.S. federal income tax purposes:

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;1. The transfer by the Target Fund of all of its assets to the Acquiring Fund solely in exchange for Acquiring Fund Shares and the assumption by the Acquiring Fund of all of the liabilities of the Target Fund, immediately followed by the pro rata distribution of all the Acquiring Fund Shares so received by the Target Fund to the Target Fund's shareholders of record in complete liquidation of the Target Fund and the dissolution of the Target Fund promptly thereafter, will constitute a "reorganization" within the meaning of section 368(a)(1) of the Internal Revenue Code of 1986, as amended (the "Code"), and the Acquiring Fund and the Target Fund will each be a "party to a reorganization," within the meaning of section 368(b) of the Code, with respect to the Reorganization.

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;2. No gain or loss will be recognized by the Acquiring Fund upon the receipt of all of the Target Fund's assets solely in exchange for Acquiring Fund Shares and the assumption by the Acquiring Fund of all the liabilities of the Target Fund. (Section 1032(a) of the Code).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;3. No gain or loss will be recognized by the Target Fund upon the transfer of all of its assets to the Acquiring Fund solely in exchange for Acquiring Fund Shares and the assumption by the Acquiring Fund of all of the liabilities of the Target Fund or upon the distribution (whether actual or constructive) of such Acquiring Fund Shares to the Target Fund's shareholders solely in exchange for such shareholders' shares of the Target Fund in complete liquidation of the Target Fund. (Sections 361(a) and (c) and 357(a) of the Code).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;4. No gain or loss will be recognized by the Target Fund's shareholders upon the exchange, pursuant to the Plan, of all their shares of the Target Fund solely for Acquiring Fund Shares, except to the extent the Target Fund's shareholders receive cash in lieu of a fractional Acquiring Fund Share. (Section 354(a) of the Code).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;5. The aggregate basis of the Acquiring Fund Shares received by each Target Fund shareholder pursuant to the Plan (including any fractional Acquiring Fund Share to which a shareholder would be entitled) will be the same as the aggregate basis of the Target Fund shares exchanged therefor by such shareholder. (Section 358(a)(1) of the Code).

Nuveen Select Tax-Free Income Portfolio<br> Nuveen California Select Tax-Free Income Portfolio<br> Nuveen New York Select Tax-Free Income Portfolio

January 12, 2026

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;6. The holding period of the Acquiring Fund Shares received by each Target Fund shareholder in the Reorganization (including any fractional Acquiring Fund Share to which a shareholder would be entitled) will include the period during which the shares of the Target Fund exchanged therefor were held by such shareholder, provided such Target Fund shares were held as capital assets at the Effective Time. (Section 1223(1) of the Code).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;7. The basis of the assets of the Target Fund received by the Acquiring Fund will be the same as the basis of such assets in the hands of the Target Fund immediately before the Effective Time. (Section 362(b) of the Code).

&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;8. The holding period of the assets of the Target Fund received by the Acquiring Fund will include the period during which such assets were held by the Target Fund (except where investment activities of the Acquiring Fund have the effect of reducing or eliminating a holding period with respect to an asset). (Section 1223(2) of the Code).

Notwithstanding anything to the contrary herein, we express no opinion as to (1) the effect of the Reorganizations on a Target Fund, the Acquiring Fund or any shareholder of a Target Fund with respect to any asset (including without limitation any stock held in a passive foreign investment company as defined in section 1297(a) of the Code) as to which any gain or loss is required to be recognized under U.S. federal income tax principles (i) at the end of a taxable year or upon the termination thereof, or (ii) upon the transfer of such asset regardless of whether such transfer would otherwise be a non-taxable transaction under the Code, (2) the effect of the Reorganizations under the alternative minimum tax imposed under Section 55 of the Code on any direct or indirect shareholder of a Target Fund, or (3) any other U.S. federal tax issues (except those set forth above) and all state, local or foreign tax issues of any kind.

**<u>Facts</u>**

Our opinion is based upon the facts, representations and assumptions set forth or referred to above and the following facts and assumptions, any alteration of which could adversely affect our conclusions.

Each Target Fund has been registered and operated, since it commenced operations, as a closed-end management investment company under the Investment Company Act of 1940, as amended (the "1940 Act"). Nuveen California Select Tax-Free Income Portfolio's common shares are listed and traded on the New York Stock Exchange ("NYSE") under the symbol NXC and Nuveen New York Select Tax-Free Income Portfolio's common shares are listed and traded on the NYSE under the symbol NXN. All the outstanding common shares of each Target Fund are treated as equity for U.S. federal income tax purposes. Each Target Fund currently has outstanding no shares, other than its common shares. Each Target Fund is treated as a corporation for U.S. federal income tax purposes, has elected to be taxed as a regulated investment company under section 851 of the Code for all its taxable years, including without limitation the taxable year in which its respective Reorganization occurs, and has qualified and will continue to qualify for the tax treatment afforded regulated investment companies under the Code for each of its taxable years, including without limitation the taxable year in which its Reorganization occurs. All the Acquiring Fund Shares issued in the Reorganizations will be treated as equity for U.S. federal income tax purposes.

Nuveen Select Tax-Free Income Portfolio<br> Nuveen California Select Tax-Free Income Portfolio<br> Nuveen New York Select Tax-Free Income Portfolio

January 12, 2026

The Acquiring Fund similarly has been registered and operated since it commenced operations as a closed-end management investment company under the 1940 Act. The Acquiring Fund Shares are listed and traded on the NYSE under the symbol NXP. The Acquiring Fund currently has no shares outstanding, other than Acquiring Fund Shares. The Acquiring Fund Shares to be issued in the Reorganizations will be treated as equity for U.S. federal income tax purposes. The Acquiring Fund is treated as a corporation for U.S. federal income tax purposes, has elected to be taxed as a regulated investment company under section 851 of the Code for all its taxable years, including without limitation the taxable year in which the Reorganizations occur, and has qualified and will continue to qualify for the tax treatment as a regulated investment company under the Code for each of its taxable years, including without limitation the taxable year in which the Reorganizations occur.

Upon satisfaction of certain terms and conditions set forth in the Plan on or before the Effective Time, the Acquiring Fund will acquire all the assets of each Target Fund solely in exchange for newly issued Acquiring Fund Shares and the assumption by the Acquiring Fund of all the liabilities of such Target Fund. Immediately thereafter, each Target Fund will distribute pro rata to its shareholders of record all the Acquiring Fund Shares so received in complete liquidation of such Target Fund, and promptly thereafter, each Target Fund will be dissolved under applicable state law. The assets of each Target Fund to be acquired by the Acquiring Fund will include, without limitation, cash, securities, commodities, interests in futures, dividends or interest receivables owned by such Target Fund and any deferred or prepaid expenses shown as an asset on the books of such Target Fund as of the Closing. In each Reorganization, the Acquiring Fund will acquire at least ninety percent (90%) of the fair market value of the Target Fund's net assets and at least seventy percent (70%) of the fair market value of the Target Fund's gross assets held immediately prior to the Reorganization.

The Acquiring Fund Shares issued to each Target Fund will have the same aggregate net asset value, as of the Valuation Time (as defined in the Plan), as the aggregate value of the net assets of such Target Fund transferred to the Acquiring Fund as of such time.

Immediately after the Effective Time of each Reorganization, the Target Fund will be liquidated and will distribute the newly issued Acquiring Fund Shares it received pro rata to its shareholders of record in exchange for such shareholders' Target Fund shares. No fractional Acquiring Fund Shares will be issued in connection with the Reorganizations. In lieu thereof, the Acquiring Fund's transfer agent, on behalf of the shareholders entitled to receive fractional Acquiring Fund Shares, will aggregate all fractional Acquiring Fund Shares and sell the resulting whole shares on the NYSE for the account of all shareholders of fractional interests, and each such shareholder will be entitled to a pro rata share of the proceeds from such sale.

As a result of the Reorganizations, every shareholder of a Target Fund will own Acquiring Fund Shares (including for this purpose any fractional shares to which they would be entitled) that will have an aggregate per share net asset value as of the Valuation Time equal to the aggregate per share net asset value of the Target Fund shares held by such shareholder as of the Valuation Time.

Following each Reorganization, the Acquiring Fund will continue the Target Fund's historic business in that it will have a similar investment objective and similar investment strategies, policies, risks and restrictions as those of the Target Fund. In addition, the Acquiring Fund will use a significant portion of each Target Fund's historic business assets in its business. At least thirty-four percent (34%) of the total fair market value of the Target Fund's portfolio assets (i) will meet as of the Effective Time, and (ii) met, at all times beginning two years prior to the date the Board of Trustees of the Target Funds approved the Reorganizations and at all times thereafter, the investment objective, strategies, policies, risks and restrictions of the Acquiring Fund. No Fund will have altered its portfolio to meet this thirty-four percent (34%) threshold. No Fund modified any of its investment objective, strategies, policies, risks or restrictions in connection with the Reorganizations and the Acquiring Fund has no plan or intention to change any of its investment objective, strategies, policies, risks or restrictions after either Reorganization.

Nuveen Select Tax-Free Income Portfolio<br> Nuveen California Select Tax-Free Income Portfolio<br> Nuveen New York Select Tax-Free Income Portfolio

January 12, 2026

In approving its respective Reorganization(s), the Board of Trustees of each Fund (each a "Board") determined that the Plan and the transactions contemplated thereunder are in the best interests of its Fund and that the interests of the shareholders of its Fund will not be diluted as a result of the Reorganization(s). In making such determination, each Board considered a number of factors as set forth under the heading "Proposal No. 1 – Reorganizations of the Target Funds into the Acquiring Fund – Information about the Reorganizations – Reasons for the Reorganizations" in the Joint Proxy Statement/Prospectus dated August 25, 2025 relating to the Registration Statement (as defined below).

**<u>Conclusion</u>**

Based on the foregoing, it is our opinion with respect to each Reorganization that the transfer of all of the assets of each Target Fund, pursuant to the Plan, to the Acquiring Fund solely in exchange for Acquiring Fund Shares and the assumption by the Acquiring Fund of all of the liabilities of such Target Fund followed by the complete liquidation of such Target Fund immediately thereafter will qualify as a reorganization under section 368(a)(1) of the Code.

The opinions set forth above (subject to the conditions and limitations set forth above) with respect to (i) the nonrecognition of gain or loss by a Target Fund and the Acquiring Fund, (ii) the basis and holding period of the assets received by the Acquiring Fund, (iii) the nonrecognition of gain or loss by a Target Fund's shareholders upon the receipt of the Acquiring Fund Shares, except with respect to cash received in lieu of a fractional Acquiring Fund Share, and (iv) the basis and holding period of the Acquiring Fund Shares received by a Target Fund's shareholders follow as a matter of law from the opinion that the transfers under the Plan will qualify as a reorganization under section 368(a)(1) of the Code.

The opinions expressed in this letter are based on the Code, the Income Tax Regulations promulgated by the Treasury Department thereunder and judicial authority reported as of the date hereof. We have also considered the positions of the Internal Revenue Service (the "Service") reflected in published and private rulings. Although we are not aware of any pending changes to these authorities that would alter our opinions, there can be no assurances that future legislative or administrative changes, court decisions or Service interpretations will not significantly modify the statements or opinions expressed herein. We do not undertake to make any continuing analysis of the facts or relevant law following the date of this letter or to notify you of any changes to such facts or law.

Our opinion is limited to those U.S. federal income tax issues specifically considered herein. We do not express any opinion as to any other U.S. federal tax issues, or any state, local or foreign tax law issues, arising from or related to the transactions contemplated by the Plan.

Although the discussion herein is based upon our best interpretation of existing sources of law and expresses what we believe a court would properly conclude if presented with these issues, no assurance can be given that such interpretations would be followed if they were to become the subject of judicial or administrative proceedings.

Nuveen Select Tax-Free Income Portfolio<br> Nuveen California Select Tax-Free Income Portfolio<br> Nuveen New York Select Tax-Free Income Portfolio

January 12, 2026

This opinion is furnished to each Fund solely for its benefit in connection with its respective Reorganization(s) and is not to be relied upon, for any other purpose, in whole or in part, without our express prior written consent. Shareholders of each Fund may rely on this opinion, it being understood that we are not establishing any attorney-client relationship with any shareholder of a Fund. This letter is not to be relied upon for the benefit of any other person.

We hereby consent to the filing of this opinion as an exhibit to the Registration Statement on Form N-14 (File No. 333-288619) relating to the Reorganizations filed by the Acquiring Fund with the Securities and Exchange Commission (the "Registration Statement"); to the discussion of this opinion in the Joint Proxy Statement/Prospectus dated August 25, 2025 relating to the Registration Statement; and to the use of our name and to any reference to our firm in the Registration Statement In giving such consent, we do not thereby admit that we are within the category of persons whose consent is required under Section 7 of the Securities Act of 1933, as amended, or the rules and regulations of the Securities and Exchange Commission thereunder.

Very truly yours,

/s/ Vedder Price P.C.

VEDDER PRICE P.C.