UNITED STATES
SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549
Notice of Effectiveness
Effectiveness Date:	June 19, 2006

Form:

N-14

CIK: 0000774013 Company Name: MERRILL LYNCH MULTI STATE MUNICIPAL SERIES TRUST File Number: 333-133972 SERIES/CLASSES (CONTRACTS) MERGERS CIK Series ID Class/Contract Name Acquiring: 0000774013 MERRILL LYNCH MULTI STATE MUNICIPAL SERIES TRUST S000004035 Merrill Lynch Pennsylvania Municipal Bond Fund Target: 0000844779 BLACKROCK FUNDS S000001883 BLACKROCK PA TAX-FREE INCOME PORTFOLIO C000004940 INSTITUTIONAL Target: 0000844779 BLACKROCK FUNDS S000001883 BLACKROCK PA TAX-FREE INCOME PORTFOLIO C000004941 SERVICE Target: 0000844779 BLACKROCK FUNDS S000001883 BLACKROCK PA TAX-FREE INCOME PORTFOLIO C000004942 INVESTOR A Target: 0000844779 BLACKROCK FUNDS S000001883 BLACKROCK PA TAX-FREE INCOME PORTFOLIO C000004943 INVESTOR B Target: 0000844779 BLACKROCK FUNDS S000001883 BLACKROCK PA TAX-FREE INCOME PORTFOLIO C000004944 INVESTOR C