Post-Effective Amendment to Registration Statement (Form POS EX)

As filed with the U.S. Securities and Exchange Commission on July 14, 2026

Securities Act File No. 333-296681

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM N-14

REGISTRATION STATEMENT UNDER THE SECURITIES ACT OF 1933

PUTNAM DIVERSIFIED INCOME TRUST

(Exact Name of Registrant as Specified in Charter)

100 Federal Street

Boston, MA 02110

(Address of Principal Executive Offices) (Zip Code)

Registrant's telephone number, including area code: (617) 292-1000

This Post-Effective Amendment No. 1 will become effective immediately upon filing pursuant to Rule 462(d) under the Securities Act of 1933, as amended.

An indefinite amount of the Registrant's securities have been registered under the Securities Act of 1933 pursuant to Rule 24f-2 under the Investment Company Act of 1940. In reliance upon such Rule, no filing fee is paid at this time.

PUTNAM DIVERSIFIED INCOME TRUST

CONTENTS OF REGISTRATION STATEMENT

This Registration Statement contains the following papers and documents:

Cover Sheet

Contents of Registration Statement

Part A -Prospectus/Information Statement*

Part B - Statement of Additional Information*

Part C - Other Information

Signature Page

Exhibits*

*  Incorporated by reference from the Combined Prospectus/Information Statement and Statement of Additional Information as filed by the Registrant pursuant to Rule 497 under the Securities Act of 1933 with the Commission on July 14, 2026 (File No. 333-296681).

Explanatory Note

This Post-Effective Amendment No. 1 is being filed solely for the purpose of including in the Registration Statement on Form N-14 the final opinion and consent of Ropes & Gray LLP including consent as to Putnam Diversified Income Trust (Exhibit 11) and consent of the Independent Registered Public Accounting Firm (PricewaterhouseCoopers LLP) with respect to Putnam Global Income Trust in connection with the merger of Putnam Global Income Trust with and into Putnam Diversified Income Trust.

PUTNAM DIVERSIFIED TRUST

FORM N-14

PART C

OTHER INFORMATION

Reference is made to Article VIII, sections 1 through 3, of the Registrant's Amended and Restated Agreement and Declaration of Trust, which is incorporated by reference to Post-Effective Amendment No. 33 to the Registrant's Registration Statement on Form N-1A under the Investment Company Act of 1940, as amended (File No. 811-05635). In addition, the Registrant maintains a trustees and officers liability insurance policy under which the Registrant and its trustees and officers are named insureds. Certain service providers to the Registrant also have contractually agreed to indemnify and hold harmless the trustees against liability arising in connection with the service provider's performance of services under the relevant agreement.

The Massachusetts business trusts comprising The Putnam Funds, including the Registrant (each, a "Trust"), have also agreed to contractually indemnify each Trustee. The agreement between the Trusts and each Trustee, in addition to delineating certain procedural aspects relating to indemnification and advancement of expenses to the fullest extent permitted by the Registrant's Amended and Restated Agreement and Declaration of Trust and Amended and Restated Bylaws and the laws of The Commonwealth of Massachusetts, the Securities Act of 1933, the Securities Exchange Act of 1934 and the Investment Company Act of 1940, as now or hereafter in force, provides that each Trust severally shall indemnify and hold harmless the Trustee against any and all expenses actually and reasonably incurred by the Trustee in any proceeding arising out of or in connection with the Trustee's service to the Trust, unless the Trustee has been adjudicated in a final adjudication on the merits to have engaged in certain disabling conduct. 

Insofar as indemnification for liabilities arising under the Securities Act of 1933, as amended, may be permitted to trustees, officers and controlling persons of the Registrant by the Registrant pursuant to the Registrant's organizational instruments or otherwise, the Registrant is aware that in the opinion of the Securities and Exchange Commission, such indemnification is against public policy as expressed in the Securities Act of 1933, as amended, and, therefore, is 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 a trustee, officer or controlling person of the Registrant in the successful defense of any action, suit or proceeding) is asserted by such trustee, officer 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 whether such indemnification by it is against public policy as expressed in the Act and will be governed by the final adjudication of such issue.

Item 16. Exhibits

Item 17. Undertakings

NOTICE

A copy of the Amended and Restated Agreement and Declaration of Trust of Putnam Diversified Income Trust is on file with the Secretary of The Commonwealth of Massachusetts and notice is hereby given that this instrument is executed on behalf of the Registrant by an officer of the Registrant as an officer and not individually and the obligations of or arising out of this instrument are not binding upon any of the Trustees, officers or shareholders individually but are binding only upon the assets and property of the Registrant.

SIGNATURES

As required by the Securities Act of 1933, as amended, this Registration Statement has been signed on behalf of the Registrant, in the City of Boston and The Commonwealth of Massachusetts on the 14th day of July, 2026.

As required by the Securities Act of 1933, as amended, this Registration Statement has been signed below by the following persons in the capacities and on the date indicated:

EXHIBIT INDEX