RHY Rmk MS HI Income Fd

Form 12b-25
Notification of late filing
Form N-SAR
For Period Ended: September 30, 2008
Part I - Registrant Information
RMK Multi-Sector High Income Fund, Inc.
Three World Financial Center
200 Vesey St.
New York, NY 10281




Part II - Rules 12-b25(b)
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.
(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 will be filed
on or before the fifteenth calendar day following the prescribed due
date; or the subject quarterly report or transition report on Form 10-Q
or portion thereof, will be filed on or before the fifth calendar day
following the prescribed due date; and
(c)The accountants statement or other exhibit required by Rule 12b-25(c)
has been attached if applicable.

Part III - State below in reasonable detail why Forms 10-K, 20-F, 11-K,
10-Q, N-SAR, N-CSR, or the transition report or portion thereof, could
not be filed within the prescribed time period.
Form N-SAR for RMK Multi-Sector High Income Fund,Inc. could not be filed
within the prescribed time period because the final review of financial
statements by all parties was incomplete,and could not be completed
timely without unreasonable effort or expense. The Funds converted
service providers late in the fiscal period and the effort to compile
necessary information added additional complexity and scrutiny to the
preparation and review process. We anticipate the Form N-SAR will be
filed no later than 15 calendar days of its original due date.





Part IV - Other Information

(1)Name and telephone number of person to contact in regard to this
notification:
Steven M. Pires, 212-549-8381
(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 than the registrant was required to file such report(s) been
filed?
Yes
(3)Is it anticipated that any significant change in results of operations
from the corresponding period for the last fiscal year will be reflected
be the earnings statements to be included in the subject report or portion
thereof?
No

RMK Multi-Sector High Income Fund, Inc. has caused this notification
to be signed on its behalf by the undersigned hereunto duly authorized.
November 25,2008 Steven M. Pires