EXHIBIT NO. 99.10
INDEPENDENT AUDITORS' CONSENT
We consent to the incorporation by reference in this Post-Effective
Amendment No. 35 to Registration Statement No. 2-54607 of MFS Series Trust IV,
of our reports each dated October 5, 2000, appearing in the annual reports to
shareholders of MFS Money Market Fund, MFS Government Money Market Fund, MFS
Municipal Bond Fund and MFS Mid Cap Growth Fund, (each a series of MFS Series
Trust IV), for the year ended August 31, 2000, and to the references to us under
the headings "Financial Highlights" in the Prospectus and "Independent Auditors
and Financial Statements" in each Statement of Additional Information, both of
which are part of such Registration Statement.
DELOITTE & TOUCHE LLP
Deloitte & Touche LLP
Boston, Massachusetts
December 27, 2000
