<Page>
As filed with the Securities and Exchange Commission
on March 22, 2002

SCHEDULE 14A

Information required in Proxy Statement
Schedule 14A Information
Proxy Statement Pursuant to Section 14(a) of the
Securities Exchange Act of 1934

Filed by Registrant /X/
Filed by a Party other than the Registrant / /

Check the appropriate box:
/ / Preliminary Proxy Statement
/ / Confidential, for Use of the Commission Only (as permitted by
Rule 14a-6(e)(2))
/X/ Definitive Proxy Statement
/ / Definitive Additional Materials
/ / Soliciting Material Pursuant to Section 240.14a-11(c) or
Section 240.14a-12

CREDIT SUISSE ASSET MANAGEMENT INCOME FUND, INC.
- --------------------------------------------------------------------------------
(Name of Registrant as Specified In Its Charter)
Not Applicable

- --------------------------------------------------------------------------------
(Name of Person(s) Filing Proxy Statement, if other than the Registrant)

Payment of Filing Fee (Check the appropriate box):

/X/ No fee required
/ / Fee computed on table below per Exchange Act Rules 14a-6(i)(1)
and 0-11
(1) Title of each class of securities to which transaction applies:
-----------------------------------------------------------------------
(2) Aggregate number of securities to which transaction applies:
-----------------------------------------------------------------------
(3) Per unit price or other underlying value of transaction computed
pursuant to Exchange Act Rule 0-11(set forth the amount on which the
filing fee is calculated and state how it was determined):
-----------------------------------------------------------------------
(4) Proposed maximum aggregate value of transaction:
-----------------------------------------------------------------------
(5) Total fee paid:
-----------------------------------------------------------------------
/ / Fee paid previously with preliminary materials.
/ / Check box if any part of the fee is offset as provided by Exchange Act
Rule 0-11(a)(2) and identify the filing for which the offsetting fee was
paid previously. Identify the previous filing by registration statement
number, or the Form or Schedule and the date of its filing.
(1) Amount Previously Paid:
-----------------------------------------------------------------------
(2) Form, Schedule or Registration Statement No.:
-----------------------------------------------------------------------
(3) Filing Party:
-----------------------------------------------------------------------
(4) Date Filed:
-----------------------------------------------------------------------
<Page>
CREDIT SUISSE ASSET MANAGEMENT INCOME FUND, INC.
(800) 293-1232
466 LEXINGTON AVENUE
NEW YORK, NEW YORK 10017

-------------------

NOTICE OF ANNUAL MEETING OF SHAREHOLDERS
TO BE HELD ON APRIL 25, 2002

-------------------

TO OUR SHAREHOLDERS:

Notice is hereby given that the Annual Meeting of Shareholders (the
"Meeting") of the Credit Suisse Asset Management Income Fund, Inc. (the "Fund")
will be held on April 25, 2002, at 1:00 p.m. at the offices of Credit Suisse
Asset Management, LLC, 466 Lexington Avenue (between 45th and 46th Streets),
16th Floor, New York, New York 10017, for the following purposes:

1. To elect two Directors of the Fund (Proposal Number 1); and

2. To transact such other business as may properly come before the Meeting,
or any adjournment thereof.

These items are discussed in greater detail in the attached Proxy Statement.

THE BOARD OF DIRECTORS OF THE FUND UNANIMOUSLY RECOMMENDS THAT SHAREHOLDERS OF
THE FUND VOTE "FOR" THE FUND'S NOMINEES.

The close of business on Monday, March 4, 2002 has been fixed as the record
date for the determination of the shareholders of the Fund entitled to notice
of, and to vote at, the meeting.

This notice and related proxy material are first being mailed on or about
March 26, 2002.

By Order of the Board of Directors

/s/ Michael Pignataro
MICHAEL PIGNATARO
SECRETARY

Dated: March 26, 2002

WHETHER OR NOT YOU PLAN TO ATTEND THE MEETING IN PERSON, IT IS IMPORTANT THAT
YOUR SHARES BE REPRESENTED AND VOTED AT THE MEETING. ACCORDINGLY, PLEASE DATE,
SIGN AND RETURN THE ENCLOSED PROXY CARD PROMPTLY. NO POSTAGE IS REQUIRED IF
MAILED IN THE UNITED STATES. IT IS IMPORTANT THAT YOUR PROXY CARD BE RETURNED
PROMPTLY IN ORDER TO AVOID THE ADDITIONAL EXPENSE OF FURTHER SOLICITATION.
<Page>
CREDIT SUISSE ASSET MANAGEMENT INCOME FUND, INC.
(800) 293-1232
466 LEXINGTON AVENUE
NEW YORK, NEW YORK 10017
-------------------

PROXY STATEMENT
-----------------

This Proxy Statement is furnished in connection with the solicitation of
proxies by or on behalf of the Board of Directors (the "Board of Directors") of
Credit Suisse Asset Management Income Fund, Inc. (the "Fund") for use at the
Annual Meeting of Shareholders (the "Meeting") of the Fund to be held on
April 25, 2002, at 1:00 p.m. at the offices of Credit Suisse Asset Management,
LLC ("CSAM"), 466 Lexington Avenue (between 45th and 46th Streets), 16th Floor,
New York, New York 10017. The purpose of the Meeting and the proposal to be
voted on are set forth in the accompanying Notice of Annual Meeting of
Shareholders. The Notice of Annual Meeting of Shareholders and a proxy card (the
"Proxy") accompany this Proxy Statement. Proxy solicitations will be made
primarily by mail, but solicitations may also be made by telephone, telegraph or
personal interviews conducted by officers or employees of the Fund, CSAM, the
investment adviser to the Fund, Brown Brothers Harriman & Co., the administrator
of the Fund (the "Administrator"), or Georgeson Shareholder
Communications, Inc. ("Georgeson"), a proxy solicitation firm that has been
retained by the Fund and which will receive a fee of approximately $3,500 and
will be reimbursed for its reasonable expenses. All costs of solicitation,
including (a) printing and mailing of this Proxy Statement and accompanying
material, (b) the reimbursement of brokerage firms and others for their expenses
in forwarding solicitation material to the beneficial owners of the Fund's
shares, (c) payment of Georgeson for its services in soliciting Proxies and
(d) supplementary solicitations to submit Proxies, will be borne by the Fund.

The principal executive office of CSAM is 466 Lexington Avenue, 16th Floor,
New York, New York 10017. The Administrator has its principal executive office
at 40 Water Street, Boston, Massachusetts 02109.

The Fund's Annual Report containing audited financial statements for the
fiscal year ended December 31, 2001 has been previously furnished to all
shareholders of the Fund. It is not to be regarded as proxy-soliciting material.

If the accompanying form of proxy is executed properly and returned, shares
represented by it will be voted at the Meeting in accordance with the
instructions on the proxy. If, however, no instructions are specified, shares
will be voted "FOR" the Fund's Nominees. Should any other matter requiring a
vote of shareholders arise, the persons named in the enclosed proxy will vote
thereon according to their best judgment in the interest of the Fund. A proxy
may be revoked at any time prior to the time it is voted by written notice to
the Secretary of the Fund or by attendance at the Meeting. THE FUND'S MOST
RECENT ANNUAL REPORT TO SHAREHOLDERS IS AVAILABLE UPON REQUEST WITHOUT CHARGE BY
WRITING TO THE FUND AT THE ADDRESS LISTED ABOVE OR BY CALLING 1-800-293-1232.

Approval of Proposal Number 1 requires a plurality of the votes cast at the
Meeting.

1
<Page>
A quorum of shareholders is constituted by the presence in person or by
proxy of the holders of a majority of the outstanding shares of the Fund
entitled to vote at the Meeting. In the event that a quorum is not present at
the Meeting, the holders of a majority of the shares present in person or by
proxy will have the power to adjourn the Meeting, without notice other than an
announcement at the Meeting, until the requisite number of shares entitled to
vote at such Meeting is present. In the event that a quorum is present at the
Meeting but sufficient votes to approve any of the proposals are not received,
the persons named as proxies may propose one or more adjournments of the Meeting
to permit further solicitation of Proxies. Any such adjournment will require the
affirmative vote of a majority of those shares represented at the Meeting in
person or by Proxy and the persons named as proxies will vote those proxies that
they are entitled to vote "FOR" or "AGAINST" any such proposal in their
discretion. Absent the establishment of a subsequent record date and the giving
of notice to the holders of record thereon, the adjourned Meeting must take
place not more than 120 days after the record date. At such adjourned Meeting,
any business may be transacted which might have been transacted at the original
Meeting. If a quorum is present, a shareholder vote may be taken on one or more
of the proposals in the Proxy Statement prior to any adjournment if sufficient
votes have been received and it is otherwise appropriate. For purposes of
determining the presence of a quorum for transacting business at the Meeting,
abstentions and broker "non-votes" (that is, proxies from brokers or nominees
indicating that such persons have not received instructions from the beneficial
owner or other persons entitled to vote shares on a particular matter with
respect to which the brokers or nominees do not have discretionary power) will
be treated as shares that are present but which have not been voted.

The close of business on March 4, 2002 has been fixed as the record date
(the "Record Date") for the determination of shareholders entitled to notice of,
and to vote at, the Meeting. Each share will be entitled to one vote at the
Meeting. It is expected that the Notice of Annual Meeting, proxy statement and
form of proxy will be mailed to shareholders on or about March 26, 2002. On
March 4, 2002, there were 49,895,588 shares outstanding. Each share is entitled
to one vote at the Meeting, and fractional shares are entitled to proportionate
shares of one vote.

In order that your shares may be represented at the Meeting, you are
requested to:

- indicate your instructions on the Proxy;

- date and sign the Proxy;

- mail the Proxy promptly in the enclosed envelope;

- allow sufficient time for the Proxy to be received and processed on or
before 1:00 p.m. on April 25, 2002.

2
<Page>
PROPOSAL NUMBER 1
ELECTION OF TWO DIRECTORS TO THE BOARD OF DIRECTORS

The first proposal to be considered at the Meeting is the election of two
Directors to the Board of Directors of the Fund. Pursuant to the Fund's
Articles of Incorporation, the Board of Directors is divided into three classes,
each class having a term of three years. Each year the term of one class will
expire. James S. Pasman, Jr. and William W. Priest, Jr., Directors whose current
terms expire on the date of this meeting, have been nominated to serve as
Class I Directors for three-year terms to expire at the Fund's 2005 Annual
Meeting of Shareholders or until respective successors are duly elected and
qualified. Lawrence J. Fox is a Class II Director whose term will expire at the
Fund's 2003 Annual Meeting of Shareholders. Enrique R. Arzac is a Class III
Director whose term will expire at the Fund's 2004 Annual Meeting of
Shareholders.

The nominees for election are recommended by the Board and were selected and
nominated by those members of the Board of the Fund who are not "interested
persons" of the Fund, as defined in the Investment Company Act of 1940, as
amended (the "1940 Act").

Each nominee has indicated an intention to continue to serve if elected and
has consented to being named in this Proxy Statement. The Board of Directors has
no reason to believe that Messrs. Pasman or Priest will become unavailable for
election as a Director, but if that should occur before the Meeting, proxies
will be voted for such other person as the Board of Directors may recommend.
Each director named below who is deemed an "interested person" of the Fund, as
defined in the 1940 Act, is indicated by an asterisk. Mr. Priest is an
interested person of the Fund by virtue of his former position as an officer of
CSAM.

The following table sets forth certain information regarding the nominees
for election to the Board of the Fund, directors whose terms of office continue
beyond the 2002 annual meeting, and the officers of the Fund.
<Table>
<Caption>
NUMBER OF
PORTFOLIOS IN
FUND
POSITION(S) TERM OF OFFICE PRINCIPAL COMPLEX
HELD WITH AND LENGTH OF OCCUPATION(S) DURING OVERSEEN BY
NAME, ADDRESS, AND AGE FUND TIME SERVED PAST 5 YEARS DIRECTOR
- ----------------------------------- ------------ -------------------------------- -------------------- -----------------

NON-INTERESTED DIRECTORS:
Enrique R. Arzac .................. Director Since 1990; current term ends at Professor of Finance 8
c/o CSAM the 2004 annual meeting. and Economics,
466 Lexington Avenue Graduate School of
New York, NY 10017 Business, Columbia
Age: 60 University
(1971-present).

Lawrence J. Fox ................... Director Since 1990; current term ends at Partner, Drinker 3
One Logan Square the 2003 annual meeting. Biddle & Reath (law
18th & Cherry Streets firm) (1976 --
Philadelphia, PA 19103 present); Managing
Age: 58 Partner, Drinker
Biddle & Reath
(1991 -- 1998).

OTHER
DIRECTORSHIPS
HELD BY
NAME, ADDRESS, AND AGE DIRECTOR
- ----------------------------------- -----------------

NON-INTERESTED DIRECTORS:
Enrique R. Arzac .................. Director of The
c/o CSAM Adams Express
466 Lexington Avenue Company (a
New York, NY 10017 closed-end
Age: 60 investment
company);
Director of
Petroleum and
Resources
Corporation (a
closed-end
investment
company).
Lawrence J. Fox ................... Director,
One Logan Square Winthrop Trust
18th & Cherry Streets Company.
Philadelphia, PA 19103
Age: 58
</Table>

3
<Page>
<Table>
<Caption>
NUMBER OF
PORTFOLIOS IN
FUND
POSITION(S) TERM OF OFFICE PRINCIPAL COMPLEX
HELD WITH AND LENGTH OF OCCUPATION(S) DURING OVERSEEN BY
NAME, ADDRESS, AND AGE FUND TIME SERVED PAST 5 YEARS DIRECTOR
- ----------------------------------- ------------ -------------------------------- -------------------- -----------------

James S. Pasman, Jr. .............. Director Since 1990; current term ends at Currently retired; 61
29 The Trillium the 2002 annual meeting. President and Chief
Pittsburgh, PA 15238 Operating Officer of
Age: 71 National Inter-
Group, Inc.
(4/89-3/91);
Chairman of Permian
Oil Co. (4/89-3/91).
INTERESTED DIRECTOR:

William W. Priest, Jr.* ........... Director Since 1997; current term ends at Senior Partner of 66
12 East 49th Street the 2002 annual meeting. Steinberg Priest
New York, NY 10017 Capital Management
Age: 60 (3/01 - present);
Chairman and
Managing Director of
CSAM (5/00-2/01);
Chief Executive
Officer and Managing
Director of CSAM
(11/89-5/00).

OTHER
DIRECTORSHIPS
HELD BY
NAME, ADDRESS, AND AGE DIRECTOR
- ----------------------------------- -----------------

James S. Pasman, Jr. .............. Director of
29 The Trillium Education
Pittsburgh, PA 15238 Management Corp.,
Age: 71 Tyco
International
Ltd.; Trustee of
Deutsche VIT
Funds overseeing
six portfolios.
INTERESTED DIRECTOR:
William W. Priest, Jr.* ........... --
12 East 49th Street
New York, NY 10017
Age: 60
</Table>

<Table>
<Caption>
POSITION(S) TERM OF OFFICE PRINCIPAL
HELD WITH AND LENGTH OF OCCUPATION(S) DURING
NAME, ADDRESS AND AGE FUND TIME SERVED PAST 5 YEARS
- ----------------------------------- ------------ -------------------------------- --------------------

OFFICERS:

Hal Liebes ........................ Senior Vice Senior Vice President since Managing Director
c/o CSAM President 1996. and General Counsel
466 Lexington Avenue of CSAM (12/99 --
New York, NY 10017 present); Director
Age: 37 and General Counsel
of CSAM (3/97 --
12/99).

Michael A. Pignataro .............. Chief Chief Financial Officer, Vice Director of CSAM
c/o CSAM Financial President and Secretary since (1/01 -- present);
466 Lexington Avenue Officer, 1995. Vice President of
New York, NY 10017 Vice CSAM (12/95 --
Age: 42 President 12/00).
and
Secretary

Richard J. Lindquist .............. President President and Chief Investment Managing Director of
c/o CSAM and Chief Officer since 1996. CSAM (8/89 -
466 Lexington Avenue Investment present).
New York, NY 10017 Officer
Age: 41

Robert M. Rizza ................... Vice Vice President and Treasurer Assistant Vice
c/o CSAM President since 1999. President of CSAM
466 Lexington Avenue and (1/01 -- present);
New York, NY 10017 Treasurer Administrative
Age: 36 Officer of CSAM
(3/98 -- 12/00);
Assistant Treasurer
Bankers Trust
Company (4/94 --
3/98).
</Table>

4
<Page>

Leland Crabbe ..................... Investment Investment Officer since 2001. Director of CSAM
c/o CSAM Officer (1999 -- present);
466 Lexington Avenue Managing Director of
New York, NY 10017 Cigna Investments
Age: 40 (1998 -- 1999);
Director of CSAM
(1998).
</Table>

Set forth in the table below is the dollar range of equity securities in the
Fund and the aggregate dollar range of equity securities in the CSAM Family of
Investment Companies owned by each Director.

<Table>
<Caption>
AGGREGATE DOLLAR RANGE OF EQUITY
SECURITIES IN ALL FUNDS OVERSEEN BY
DOLLAR RANGE OF EQUITY SECURITIES DIRECTOR IN CSAM FAMILY OF
NAME OF DIRECTOR IN THE FUND*(1)(2) INVESTMENT COMPANIES* (1)(3)
- ----------------------------------- --------------------------------- -----------------------------------

Enrique R. Arzac................... C E
Lawrence J. Fox.................... E E
James S. Pasman, Jr................ C E
William W. Priest, Jr.............. A A
</Table>

- ---------------------

* Key to Dollar Ranges

A. None

B. $1 -- $10,000

C. $10,001 -- $50,000

D. $50,001 -- $100,000

E. over $100,000

(1) This information has been furnished by each director as of December 31,
2001. "Beneficial Ownership" is determined in accordance with Rule
16a-1(a)(2) promulgated under the Securities Exchange Act of 1934 (the "1934
Act").

(2) The Fund's Directors and Officers, in the aggregate, own less than 1% of the
Fund's outstanding equity securities.

(3) "CSAM Family of Investment Companies" means any two or more registered
investment companies that share CSAM as investment adviser and hold
themselves out to investors as related companies for purposes of investment
and investor services.

As of December 31, 2001, none of the non-interested nominees for election to
the Board of the Fund, the non-interested directors or their immediate family
members owned beneficially or of record any class of securities in CSAM or in a
person (other than a registered investment company) directly or indirectly
controlling, controlled by or under common control with CSAM.

During the fiscal year ended December 31, 2001, each director who was not a
director, officer, partner, co-partner or employee of CSAM, the Administrator,
or any affiliate thereof, received an annual fee of $12,500 and $1,000 for each
meeting of the Board attended by him and was reimbursed for expenses incurred in
connection with his attendance at the Board meetings. The total remuneration
paid or accrued by the Fund during the fiscal year ended December 31, 2001 to
all such unaffiliated directors was $61,500.

During the fiscal year ended December 31, 2001, the Board convened eight
times. Each director attended at least seventy-five percent of the aggregate
number of meetings of the Board and any committee on which he served held during
the period for which he was a Director.

Messrs. Arzac, Fox and Pasman constitute the Fund's Audit Committee, which
is composed of directors who are not interested persons of the Fund and who are
independent (as such term is defined by

5
<Page>
the New York Stock Exchange's listing standards). The Audit Committee met twice
during the fiscal year ended December 31, 2001. Messrs. Arzac, Fox and Pasman
also constitute the Fund's Nominating Committee, which is composed of directors
who are not interested persons of the Fund. The Nominating Committee did not
meet during the fiscal year ended December 31, 2001. The Nominating Committee
selects and nominates new non-interested directors. The Nominating Committee
will consider nominees recommended by shareholders should a vacancy arise.
Recommendations should be submitted to the Nominating Committee in care of the
Secretary of the Fund. The Fund does not have a compensation committee.

AUDIT COMMITTEE REPORT

The Board has an Audit Committee. Pursuant to the Audit Committee Charter
adopted by the Fund's Board, the Audit Committee is responsible for conferring
with the Fund's independent public accountants, reviewing annual financial
statements and recommending the selection of the Fund's independent public
accountants. The Audit Committee advises the full Board with respect to
accounting, auditing and financial matters affecting the Fund. The independent
public accountants are responsible for planning and carrying out the proper
audits and reviews of the Fund's financial statements and expressing an opinion
as to their conformity with accounting principles generally accepted in the
United States of America.

The Audit Committee has met with Fund management to discuss, among other
things, the Fund's audited financial statements for the fiscal year ended
December 31, 2001. The Audit Committee has also met with the Fund's independent
public accountants, PricewaterhouseCoopers LLP ("PwC"), and discussed with them
certain matters required by Statement of Auditing Standards No. 61,
COMMUNICATIONS WITH AUDIT COMMITTEES, as currently modified or supplemented,
including, but not limited to, the scope of the Fund's audit, the Fund's
financial statements and the Fund's accounting controls. The Audit Committee has
received the written disclosures and the letter from PwC required by the
Securities and Exchange Commission's (the "SEC") independence rules delineating
relationships between the independent public accountants and the Fund and the
impact that any such relationships may have on the objectivity and independence
of the independent public accountants. The Audit Committee has discussed with
PwC their independence and has considered whether the provision of services by
PwC to the Fund and to CSAM, as more fully described below, was compatible with
maintaining PwC's independence.

The members of the Audit Committee are not professionally engaged in the
practice of auditing or accounting and are not employed by the Fund for
accounting, financial management or internal control. Moreover, the Audit
Committee relies on and makes no independent verification of the facts presented
to it or representations made by management or the independent public
accountants. Accordingly, the Audit Committee's oversight does not provide an
independent basis to determine that management has maintained appropriate
accounting and financial reporting principles and policies, or internal controls
and procedures, designed to assure compliance with accounting standards and
applicable laws and regulations. Furthermore, the Audit Committee's
considerations and discussions referred to above do not provide assurance that
the audit of the Fund's financial statements has been carried out in accordance
with generally accepted accounting standards or that the financial statements
are presented in accordance with generally accepted accounting principles.

Based upon these reviews and discussions, the Audit Committee recommended to
the Board that the Fund's audited financial statements be included in the Fund's
2001 Annual Report to Shareholders for the period ended December 31, 2001 and be
mailed to Shareholders and filed with the SEC.

6
<Page>
SUBMITTED BY THE AUDIT COMMITTEE OF THE FUND'S BOARD OF DIRECTORS

Enrique R. Arzac
Lawrence J. Fox
James S. Pasman, Jr.

INDEPENDENT PUBLIC ACCOUNTANTS

At a meeting held on February 12, 2002, the Board, including those directors
who are not "interested persons" of the Fund, approved the selection of
PricewaterhouseCoopers LLP for the fiscal year ending December 31, 2002. PwC has
been the Fund's independent public accountants since the Fund commenced
operations in 1987, and has informed the Fund that it has no material direct or
indirect financial interest in the Fund. A representative of PwC will be
available by telephone at the Meeting and will have the opportunity to make a
statement if the representative so desires and will be available to respond to
appropriate questions.

The Board's policy regarding engaging independent auditors' service is that
the Board may engage the Fund's principal independent auditors to provide any
services normally provided by independent accounting firms, provided that such
services meet any and all of the independence requirements of the American
Institute of Certified Public Accountants and the Securities and Exchange
Commission. The Board of Directors also receives a report from its Audit
Committee relating to all services after they have been performed by the Fund's
independent auditors. The Audit Committee has considered whether the provision
of services, described below under Financial Information Systems Design and
Implementation Fees and All Other Fees, is compatible with maintaining the
principal accountant's independence.

The following table shows the aggregate fees PricewaterhouseCoopers LLP
billed to the Fund, to CSAM and to any entity controlling, controlled by or
under common control with CSAM that provides services to the Fund for their
professional services rendered for the fiscal year ended December 31, 2001.

<Table>
<Caption>
FUND CSAM AND CERTAIN AFFILIATES
----------- ---------------------------

Audit Fees.................... $39,000 $ 0
Financial Information Systems
Design and Implementation
Fees.......................... $ 0 $ 0
All Other Fees................ $ 2,500 $460,000
</Table>

7
<Page>
COMPENSATION

The following table shows certain compensation information for the directors
of the Fund for the fiscal year ended December 31, 2001. All officers of the
Fund are employees of and are compensated by CSAM. None of the Fund's executive
officers or directors who are also officers or directors of CSAM received any
compensation from the Fund for such period. The Fund has no bonus, profit
sharing, pension or retirement plans.
<Table>
<Caption>
AGGREGATE PENSION OR RETIREMENT
COMPENSATION BENEFITS ACCRUED AS PART
NAME OF DIRECTOR FROM FUND OF FUND EXPENSES
- ---------------- -------------------------------- --------------------------------

Enrique R. Arzac................... $20,500 0

Lawrence J. Fox.................... $20,500 0

James P. McCaughan*................ $ 0 0

James S. Pasman, Jr................ $20,500 0

William W. Priest, Jr.............. $ 0 0

<Caption>
TOTAL COMPENSATION FROM
ESTIMATED ANNUAL BENE- FUND AND FUND COMPLEX
NAME OF DIRECTOR FITS UPON RETIREMENT PAID TO DIRECTORS
- ---------------- -------------------------------- --------------------------------

Enrique R. Arzac................... 0 $ 72,792
Lawrence J. Fox.................... 0 $ 38,292
James P. McCaughan*................ 0 $ 0
James S. Pasman, Jr................ 0 $140,042
William W. Priest, Jr.............. 0 $ 0
</Table>

- ---------------------

* Subsequent to December 31, 2001, Mr. McCaughan resigned as a director.

REQUIRED VOTE

In the election of a Director of the Fund, the candidate receiving a
plurality of votes cast at the Meeting in person or by proxy without regard to
class, if a quorum is present, will be elected. Because abstentions and broker
non-votes are not treated as shares voted, any abstentions and broker non-votes
would have no impact on Proposal 1.

THE BOARD OF DIRECTORS, INCLUDING THE "NON-INTERESTED
DIRECTORS," RECOMMENDS THAT
YOU VOTE "FOR" THE NOMINEES SET FORTH IN PROPOSAL 1.

SECURITY OWNERSHIP OF CERTAIN BENEFICIAL OWNERS

As of March 4, 2002, no shareholder held 5% or more of the Fund's shares.

SECTION 16(a) BENEFICIAL OWNERSHIP PREPORTING COMPLIANCE

Section 16(a) of the Securities Exchange Act of 1934 and Section 30(h) of
the 1940 Act require the Fund's officers and trustees, officers and directors of
the investment adviser, affiliated persons of the investment adviser, and
persons who beneficially own more than ten percent of the Fund's securities, to
file reports of ownership with the Securities and Exchange Commission, the New
York Stock Exchange and the Fund. Based solely upon its review of the copies of
such forms received by it and written representations from such persons, the
Fund believes that, for the fiscal year ended December 31, 2001, all filing
requirements applicable to such persons were complied with.

8
<Page>
BROKER NON-VOTES AND ABSTENTIONS

A Proxy that is properly executed and returned accompanied by instructions
to withhold authority to vote (an abstention) or that represents a broker
"non-vote" (that is, a Proxy from a broker or nominee indicating that such
person has not received instructions from the beneficial owner or other person
entitled to vote shares on a particular matter with respect to which the broker
or nominee does not have discretionary power) will be treated as shares present,
but that have not voted, for the purpose of determining a quorum for the
transacting of business. The election of Directors (Proposal Number 1) requires
that the successful candidate receive a plurality of votes cast at the Meeting;
therefore, abstentions will be disregarded.

REPORTS TO SHAREHOLDERS AND FINANCIAL STATEMENTS

The Fund sends unaudited semi-annual and audited annual reports to its
shareholders, including a list of investments held. THE FUND WILL FURNISH,
WITHOUT CHARGE, A COPY OF ITS MOST RECENT ANNUAL AND SEMI-ANNUAL REPORTS, UPON
REQUEST TO THE FUND, C/O CREDIT SUISSE ASSET MANAGEMENT, LLC AT 466 LEXINGTON
AVENUE, 16TH FLOOR, NEW YORK, NEW YORK 10017, TELEPHONE (1-800-293-1232) OR AT
THE FUND'S WEBSITE AT WWW.CEFSOURCE.COM. THESE REQUESTS WILL BE HONORED WITHIN
THREE BUSINESS DAYS OF RECEIPT.

OTHER MATTERS WHICH MAY COME BEFORE THE MEETING; SHAREHOLDER PROPOSALS

The Board is not aware of any other matters that will come before the
Meeting. Should any other matter properly come before the Meeting, it is the
intention of the persons named in the accompanying Proxy to vote the Proxy in
accordance with their judgment on such matters.

Notice is hereby given that for a shareholder proposal to be considered for
inclusion in the Fund's proxy material relating to its 2003 annual meeting of
shareholders, the shareholder proposal must be received by the Fund no later
than November 26, 2002. The shareholder proposal, including any accompanying
supporting statement, may not exceed 500 words. A shareholder desiring to submit
a proposal must be a record or beneficial owner of Shares with a market value of
$2,000 and must have held such Shares for at least one year. Further, the
shareholder must continue to hold such Shares through the date on which the
meeting is held. Documentary support regarding the foregoing must be provided
along with the proposal. There are additional requirements regarding proposals
of shareholders, and a shareholder contemplating submission of a proposal is
referred to Rule 14a-8 promulgated under the 1934 Act. The timely submission of
a proposal does not guarantee its inclusion in the Fund's proxy materials.

Pursuant to the By-laws of the Fund, at any annual meeting of the
shareholders, only such business will be conducted as has been properly brought
before the annual meeting. To be properly brought before the annual meeting, the
business must be (i) specified in the notice of meeting (or any supplement
thereto) given by or at the direction of the Board, (ii) otherwise properly
brought before the meeting by or at the direction of the Board, or
(iii) otherwise properly brought before the meeting by a shareholder.

9
<Page>
For business to be properly brought before the annual meeting by a
shareholder, the shareholder must have given timely notice thereof in writing to
the Secretary of the Fund. To be timely, any such notice must be delivered to or
mailed and received at Credit Suisse Asset Management Income Fund, Inc. c/o
Credit Suisse Asset Management, LLC, 466 Lexington Avenue, 16th Floor, New York,
NY 10017 not later than 45 days before the date in the then current year
corresponding to the date on which the Fund first mailed its notice and proxy
materials for the annual meeting held in the prior year; provided, however, that
in the event that the date of the annual meeting is advanced or delayed by more
than 30 days from the first anniversary of the preceding year's annual meeting,
notice by such shareholder to be timely must be so received not later than the
close of business on the 10th day following the day on which notice or public
announcement of the date of such meeting was given or made. In no event shall
the public announcement of an adjournment of an annual meeting commence a new
time period for the giving of a shareholder's notice as described above.

Any such notice by a shareholder shall set forth as to each matter the
shareholder proposes to bring before the annual meeting: (i) a brief description
of the business desired to be brought before the annual meeting and the reasons
for conducting such business at the annual meeting, (ii) the name and address,
as they appear on the Fund's books, of the shareholder proposing such business,
(iii) the class and number of Shares of the capital stock of the Fund which are
beneficially owned by the shareholder, (iv) a representation that the
shareholder is a holder of record of shares of the Fund entitled to vote at such
meeting and intends to appear in person or by proxy at the meeting to present
such business, (v) whether the shareholder intends or is part of a group which
intends to solicit proxies from other shareholders in support of such business
and (vi) any material interest of the shareholder in such business.

The Fund may exercise discretionary voting authority with respect to any
shareholder proposals for the 2003 annual meeting of shareholders not included
in the proxy statement and form of proxy which are not submitted to the Fund
within the time-frame indicated above. Even if timely notice is received, the
Fund may exercise discretionary voting authority in certain other circumstances.
Discretionary voting authority is the ability to vote proxies that shareholders
have executed and returned to the Fund on matters not specifically reflected on
the form of proxy.

SHAREHOLDERS WHO DO NOT EXPECT TO BE PRESENT AT THE MEETING AND WHO WISH TO
HAVE THEIR SHARES VOTED ARE REQUESTED TO DATE AND SIGN THE ENCLOSED PROXY CARD
AND RETURN IT IN THE ENCLOSED ENVELOPE. NO POSTAGE IS REQUIRED IF MAILED IN THE
UNITED STATES.

10
<Page>
CREDIT SUISSE ASSET MANAGEMENT
INCOME FUND, INC.

-------------------------------------------------------------------------

APRIL 25, 2002

4946-PS-02
<Page>

PROXY

CREDIT SUISSE ASSET MANAGEMENT INCOME FUND, INC.

466 LEXINGTON AVENUE
16TH FLOOR
NEW YORK, NY 10017

THIS PROXY IS SOLICITED ON BEHALF OF THE BOARD OF DIRECTORS

The undersigned hereby appoints Messrs. Hal Liebes and Michael A. Pignataro,
each with the power to appoint his substitute, and hereby authorizes them to
represent and vote, as designated on the reverse side and in accordance with
their judgment on such other matters as may properly come before the meeting or
any adjournments thereof, all shares of Credit Suisse Asset Management Income
Fund, Inc. that the undersigned is entitled to vote at the Annual Meeting of
Shareholders to be held on Thursday, April 25, 2002 and at any adjournments
thereof.

<Table>
<Caption>
- ---------------------------- ----------------------------------------------------------- --------------------------
SEE REVERSE SIDE CONTINUED AND TO BE SIGNED ON REVERSE SIDE SEE REVERSE SIDE
- ---------------------------- ----------------------------------------------------------- --------------------------

</Table>

<Page>

DETACH HERE

[X] PLEASE MARK VOTES AS IN THIS EXAMPLE.

THIS PROXY WHEN PROPERLY EXECUTED WILL BE VOTED IN THE MANNER DIRECTED HEREIN BY
THE UNDERSIGNED SHAREHOLDER. IF NO DIRECTION IS MADE, THIS PROXY WILL BE VOTED
"FOR" ALL NOMINEES IN PROPOSAL 1. THE BOARD OF DIRECTORS RECOMMENDS A VOTE "FOR"
ALL NOMINEES IN PROPOSAL 1.

1. ELECTION OF THE FOLLOWING NOMINEES AS DIRECTORS:

Nominee: (01) James S. Pasman, Jr. (three-year term)
(02) William W. Priest, Jr. (three-year term)

/ / FOR all nominees listed above (except as marked to the contrary above)

/ / WITHHOLD AUTHORITY to vote for all nominees listed above

(Instruction: To withhold authority for any individual nominee, strike a line
through such individual's name above.)

/ / MARK HERE FOR ADDRESS CHANGE AND NOTE AT LEFT

PLEASE MARK, SIGN AND DATE AND RETURN THIS PROXY CARD PROMPTLY USING THE
ENCLOSED ENVELOPE.

Please sign exactly as name(s) appear(s) hereon. Joint owners should each sign.
When signing as attorney, executor, administrator, trustee or guardian, please
give full title as such. If a corporation, please sign in full corporate name by
president or other authorized officer. If a partnership, please sign in
partnership name by authorized person.

Signature: Date Signature: Date
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