WARNING: THE EDGAR SYSTEM ENCOUNTERED ERROR(S) WHILE PROCESSING THIS SCHEDULE.

<TABLE> <S> <C>

<ARTICLE> 6
<CIK> 0000764624
<NAME> Municipal High Income Fund
<SERIES>
   <NUMBER>004
   <NAME>Smith Barney Income Fund

<S>                             <C>
<PERIOD-TYPE>                  Year
<FISCAL-YEAR-END>                               Jul-31-2000
<PERIOD-END>                                    Jul-31-2000
<INVESTMENTS-AT-COST>                           528,162,309
<INVESTMENTS-AT-VALUE>                          499,330,299
<RECEIVABLES>                                     7,316,327
<ASSETS-OTHER>                                       32,645
<OTHER-ITEMS-ASSETS>                                      0
<TOTAL-ASSETS>                                  506,679,271
<PAYABLE-FOR-SECURITIES>                                  0
<SENIOR-LONG-TERM-DEBT>                                   0
<OTHER-ITEMS-LIABILITIES>                           938,896
<TOTAL-LIABILITIES>                                 938,896
<SENIOR-EQUITY>                                           0
<PAID-IN-CAPITAL-COMMON>                        534,665,722
<SHARES-COMMON-STOCK>                            19,189,602
<SHARES-COMMON-PRIOR>                            17,027,134
<ACCUMULATED-NII-CURRENT>                                 0
<OVERDISTRIBUTION-NII>                                    0
<ACCUMULATED-NET-GAINS>                             (93,337)
<OVERDISTRIBUTION-GAINS>                                  0
<ACCUM-APPREC-OR-DEPREC>                        (28,832,010)
<NET-ASSETS>                                    505,740,375
<DIVIDEND-INCOME>                                         0
<INTEREST-INCOME>                                38,647,321
<OTHER-INCOME>                                            0
<EXPENSES-NET>                                    6,021,670
<NET-INVESTMENT-INCOME>                          32,625,651
<REALIZED-GAINS-CURRENT>                            329,605
<APPREC-INCREASE-CURRENT>                       (43,964,777)
<NET-CHANGE-FROM-OPS>                           (11,009,521)
<EQUALIZATION>                                            0
<DISTRIBUTIONS-OF-INCOME>                        16,371,977
<DISTRIBUTIONS-OF-GAINS>                          1,023,688
<DISTRIBUTIONS-OTHER>                                     0
<NUMBER-OF-SHARES-SOLD>                           6,210,063
<NUMBER-OF-SHARES-REDEEMED>                       4,708,841
<SHARES-REINVESTED>                                 661,246
<NET-CHANGE-IN-ASSETS>                         (140,005,615)
<ACCUMULATED-NII-PRIOR>                          (1,245,038)
<ACCUMULATED-GAINS-PRIOR>                         1,549,019
<OVERDISTRIB-NII-PRIOR>                                   0
<OVERDIST-NET-GAINS-PRIOR>                                0
<GROSS-ADVISORY-FEES>                             3,348,219
<INTEREST-EXPENSE>                                        0
<GROSS-EXPENSE>                                   6,021,670
<AVERAGE-NET-ASSETS>                            287,707,614
<PER-SHARE-NAV-BEGIN>                                16.980
<PER-SHARE-NII>                                       0.920
<PER-SHARE-GAIN-APPREC>                              (1.120)
<PER-SHARE-DIVIDEND>                                  0.950
<PER-SHARE-DISTRIBUTIONS>                             0.050
<RETURNS-OF-CAPITAL>                                  0.000
<PER-SHARE-NAV-END>                                  15.780
<EXPENSE-RATIO>                                        0.84



</TABLE>