Electronic Municipal Market Access (EMMA) Website

Introductory EMMA Videos

Information on EMMA

The EMMA website is a vast repository of municipal bond offering documents, trade data and ongoing disclosures that municipal bond issuers make throughout the life of a bond. Get access to:

     Information about Specific Municipal Securities

  • Official statements (the prospectus for a municipal bond)
  • Trade prices, yields and other data about a bond’s trading history
  • Financial disclosure documents from the issuer of the bond
  • Other ongoing disclosure documents about events affecting the bond
  • Information about 529 plans and ABLE programs

     Market-Wide Information

  • Yield curves and indices from third-party providers
  • Calendar of municipal securities scheduled to be offered
  • Calendar of upcoming economic reports and events that may have an impact on the market
  • Market statistics about overall trading patters and most active securities

Investors should note that no single source of data and documents, including EMMA, has all of the information that may be relevant with respect to every municipal security.


Visit the EMMA Help page for information on how to use the resources and tools available on EMMA. The MSRB Education Center also offers several resources for investors and issuers on using EMMA. For a general overview, see:

 Getting to Know EMMA: An Introductory Guide for Investors  
 Getting to Know EMMA: An Introductory Guide for State and Local Governments

EMMA in the Future

The MSRB established the EMMA website in 2008 to provide retail investors with centralized, online and free access to municipal securities market disclosure documents and transaction pricing data on a real-time basis. Given the market’s enthusiastic adoption of EMMA, the website now serves not only retail investors but all market participants, including municipal entities, dealers, municipal advisors, institutional investors and the public. In recognition of EMMA’s broader market utility, the MSRB seeks to provide all market stakeholders with access to data, documents and tools that support fair transactions, facilitate decision-making and promote an efficient municipal securities market. Evolving EMMA into an industry-leading platform that meets the needs of market participants requires establishing appropriate guiding principles for future functionality, promoting and enhancing use of EMMA as a tool for satisfying regulatory objectives, and improving the overall user experience of the website. Read more about our plan to build on EMMA’s foundation.