UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                             WASHINGTON, D.C. 20549
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                                   FORM 12B-25                 SEC FILE NUMBER
                                                            811-10379; 333-61300
                           NOTIFICATION OF LATE FILING      --------------------
                                                                CUSIP NUMBER
                                                            --------------------

(Check One): |_|  Form 10-K    |_|  Form 20-F   |_|  Form 11-K  |_| Form 10-Q
             |_|  Form 10-D    |_|  Form N-SAR  |X|  Form N-CSR

                    For Period Ended: 10/31/2006
                    |_|  Transition Report on Form 10-K
                    |_|  Transition Report on Form 20-F
                    |_|  Transition Report on Form 11-K
                    |_|  Transition Report on Form 10-Q
                    |_|  Transition Report on Form N-SAR
                    For the Transition Period Ended:
                                                    ----------------------------

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 Read Instruction (on back page) Before Preparing Form. Please Print or Type.
 NOTHING IN THIS FORM SHALL BE CONSTRUED TO IMPLY THAT THE COMMISSION HAS
                   VERIFIED ANY INFORMATION CONTAINED HEREIN.
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If the notification relates to a portion of the filing checked above, identify
the Item(s) to which the notification relates:
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                        PART I -- REGISTRANT INFORMATION

PIMCO California Municipal Income Fund
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FULL NAME OF REGISTRANT

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FORMER NAME IF APPLICABLE
c/o Allianz Global Investors Fund Management, 1345 Avenue of the Americas
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ADDRESS OF PRINCIPAL EXECUTIVE OFFICE (Street and Number)
New York, New York 10105
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CITY, STATE AND ZIP CODE

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PART II -- RULES 12B-25(B) AND (C)

If the subject report could not be filed without unreasonable effort or expense
and the registrant seeks relief pursuant to Rule 12b-25(b), the following should
be completed. (Check box if appropriate)


        (a) The reason described in reasonable detail in Part III of this form
            could not be eliminated without unreasonable effort or expense;

        (b) The subject annual report, semi-annual report, transition report on
            Form 10-K, Form 20-F, Form 11-K, Form N-SAR or Form N-CSR, or
            portion thereof, will be filed on or before the fifteenth calendar
 |X|        day following the prescribed due date; or the subject quarterly
            report or transition report on Form 10-Q or subject distribution
            report on Form 10-D, or portion thereof, will be filed on or before
            the fifth calendar day following the prescribed due date; and

        (c) The accountant's statement or other exhibit required by Rule
            12b-25(c) has been attached if applicable.

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PART III -- NARRATIVE

State below in reasonable detail why Forms 10-K, 20-F, 11-K, 10-Q,10-D, N-SAR,
N-CSR, or the transition report or portion thereof, could not be filed within
the prescribed time period.

SEC 1344 (04-06)




The Registrant is currently reevaluating the financial statement presentation of
certain derivative instruments held by the Fund, which are commonly referred to
as inverse floaters, under the provisions of Financial Accounting Standard 140
("FAS 140"). This review was initiated based on discussions with the Fund's
independent auditors subsequent to the Fund's mailing of its October 31, 2006
semi-annual report to shareholders and filing of its related Form N-SAR with the
Commission on December 27, 2006. The Registrant expects to be unable to complete
and file Form N-CSR relating to the October 31, 2006 semi-annual period in the
prescribed period of time without unreasonable effort or expense, as any such
filing prior to the completion of this review may result in amendments to such
Form N-CSR filing.

PART IV -- OTHER INFORMATION

(1)  Name and telephone number of person to contact in regard to this
     notification

       Brian S. Shlissel                 212                  739-3369
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             (NAME)                  (AREA CODE)         (TELEPHONE NUMBER)

(2)  Have all other periodic reports required under Section 13 or 15(d) of the
     Securities Exchange Act of 1934 or Section 30 of the Investment Company Act
     of 1940 during the preceding 12 months or for such shorter period that the
     registrant was required to file such report(s) been filed ? If answer is
     no, identify report(s). |X| Yes |_| No

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(3)  Is it anticipated that any significant change in results of operations from
     the corresponding period for the last fiscal year will be reflected by the
     earnings statements to be included in the subject report or portion
     thereof? |_| Yes |X| No

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If so, attach an explanation of the anticipated change, both narratively and
quantitatively, and, if appropriate, state the reasons why a reasonable estimate
of the results cannot be made.

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                     PIMCO California Municipal Income Fund
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                  (NAME OF REGISTRANT AS SPECIFIED IN CHARTER)

has caused this notification to be signed on its behalf by the undersigned
hereunto duly authorized.

Date        January 9, 2007      By  /S/ BRIAN S. SHLISSEL
     -------------------------      ------------------------
                                    Name:  Brian S. Shlissel
                                    Title: President and Chief Executive Officer

INSTRUCTION: The form may be signed by an executive officer of the registrant or
by any other duly authorized representative. The name and title of the person
signing the form shall be typed or printed beneath the signature. If the
statement is signed on behalf of the registrant by an authorized representative
(other than an executive officer), evidence of the representative's authority to
sign on behalf of the registrant shall be filed with the form.

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                                    ATTENTION
   INTENTIONAL MISSTATEMENTS OR OMISSIONS OF FACT CONSTITUTE FEDERAL CRIMINAL
                        VIOLATIONS (SEE 18 U.S.C. 1001).
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                              GENERAL INSTRUCTIONS

1. This form is required by Rule 12b-25 (17 CFR 240.12b-25) of the General Rules
   and Regulations under the Securities Exchange Act of 1934.
2. One signed original and four conformed copies of this form and amendments
   thereto must be completed and filed with the Securities and Exchange
   Commission, Washington, D.C. 20549, in accordance with Rule 0-3 of the
   General Rules and Regulations under the Act. The information contained in or
   filed with the form will be made a matter of public record in the Commission
   files.
3. A manually signed copy of the form and amendments thereto shall be filed with
   each national securities exchange on which any class of securities of the
   registrant is registered.
4. Amendments to the notifications must also be filed on Form 12b-25 but need
   not restate information that has been correctly furnished. The form shall be
   clearly identified as an amended notification.
5. Electronic Filers: This form shall not be used by electronic filers unable to
   timely file a report solely due to electronic difficulties. Filers unable to
   submit reports within the time period prescribed due to difficulties in
   electronic filing should comply with either Rule 201 or Rule 202 of
   Regulation S-T (ss.232.201 or ss.232.202 of this chapter) or apply for an
   adjustment in filing date pursuant to Rule 13(b) of Regulation S-T
   (ss.232.13(b) of this chapter).