Because of recent federal tax law changes which place additional restrictions on the issuance of tax-exempt municipal securities, issuers of municipal securities are issuing, or considering issuing, debt securities that are subject to federal taxation. As a result, the Municipal Securities Rulemaking Board has received numerous inquiries concerning the application of its rules to dealers effecting transactions in taxable municipal securities. The Board wishes to emphasize that its rules apply to transactions effected by brokers, dealers, and municipal securities dealers in all municipal securities. Thus, transactions in taxable municipal securities are subject to the Board's rules, including rules regarding uniform and fair practice, automated clearance and settlement, the payment of the underwriting assessment fee, and the professional qualifications of registered representatives and principals.