8-K

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

WASHINGTON, D.C. 20549

FORM 8-K

CURRENTREPORT

Pursuant to Section 13 or 15(d)

of the Securities Exchange Act of 1934

Date of Report (Date of earliest event reported): June 29, 2020

Credit Suisse Asset Management Income Fund, Inc.

(Exact name of registrant as specified in its charter)

Eleven Madison Avenue

New York, New York 10010

(Address of principal executive offices)

Registrant’s telephone number, including area code: (212) 325-2000

Not Applicable

(Formername or former address, if changed since last report.)

Check the appropriate box below if the Form 8-K filing is intended to simultaneously satisfy the filing obligation of the registrant under any of the following provisions (see General Instruction A.2. below):

(a) Dismissal of independent registered public accounting firm

On June 25, 2020 the Board of Directors (the “Board”) of Credit Suisse Asset Management Income Fund, Inc. (the “Fund”), approved the dismissal of KPMG LLP (“KPMG”) as the independent registered public accounting firm for the Fund. The Board’s decision to approve the dismissal of KPMG was recommended by the Audit Committee of the Board.

The reports of KPMG on the Fund’s financial statements as of and for the two most recent fiscal years (ended December 31, 2019 and December 31, 2018) did not contain an adverse opinion or a disclaimer of opinion, and were not qualified or modified as to uncertainties, audit scope or accounting principles.

During the Fund’s two most recent fiscal years (ended December 31, 2019 and December 31, 2018) and during the period from the end of the most recently completed fiscal year through June 25, 2020, there were no disagreements between the Fund and KPMG on any matter of accounting principles or practices, financial statement disclosure or auditing scope or procedure, which disagreements, if not resolved to the satisfaction of KPMG, would have caused them to make reference to the subject matter of the disagreements in their report on the financial statements of the Fund for such periods.

During the Fund’s two most recent fiscal years (ended December 31, 2019 and December 31, 2018) and during the period from the end of the most recently completed fiscal year through June 25, 2020, there were no “reportable events” (as defined in Item 304(a)(1)(v) of Regulation S-K under the Securities Exchange Act of 1934, as amended (the “Exchange Act”)).

The Fund has provided KPMG with a copy of the foregoing disclosures and has requested that KPMG furnish it with a letter addressed to the Securities and Exchange Commission stating whether it agrees with the statements made by the Fund set forth above. A copy of KPMG’s letter dated June 26, 2020 is filed as Exhibit 16.1 to this Form 8-K.

(b) Engagement of new independent registered publicaccounting firm

Upon the recommendation of the Audit Committee, the Board approved the engagement of PricewaterhouseCoopers LLP (“PwC”) as the independent registered public accounting firm for the Fund for the fiscal year ending December 31, 2020. During the Fund’s two most recent fiscal years (ended December 31, 2019 and December 31, 2018) and during the period from the end of the most recently completed fiscal year through the date of this Form 8-K, neither the Fund, nor anyone on its behalf consulted with PwC, on behalf of the Fund, regarding the application of accounting principles to a specified transaction (either

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completed or proposed), the type of audit opinion that might be rendered on the Fund’s financial statements, or any matter that was either the subject of a “disagreement,” as defined in Item 304(a)(1)(iv) of Regulation S-K under the Exchange Act and the instructions thereto, or a “reportable event,” as defined in Item 304(a)(1)(v) of Regulation S-K under the Exchange Act.

(d) Exhibits.

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SIGNATURES

Pursuant to the requirements of the Securities Exchange Act of 1934, as amended, the Fund has duly caused this report to be signed on its behalf by the undersigned hereunto duly authorized.

EXHIBIT INDEX

The following exhibit is filed herewith:

Response Letter

June 26, 2020

Securities and Exchange Commission

Washington, D.C. 20549

Ladies and Gentlemen:

We were previously principal accountants for Credit Suisse Asset Management Income Fund, Inc. (the Fund) and, under the date of February 14, 2020, we reported on the financial statements of the Fund as of and for the years ended December 31, 2019 and 2018. On June 25, 2020, we were dismissed. We have read the Fund’s statements included under Item 4.01(a) of its Form 8-K dated June 26, 2020, and we agree with such statements included therein, except that we are not in a position to agree or disagree with the Fund’s statement that the Board of Directors and the Audit Committee of the Board of Directors of the Fund approved and recommended the decision to change independent accountants.

Very truly yours,

KPMG LLP, a U.S. limited liability partnership, is the U.S.

member firm of KPMG International, a Swiss cooperative.