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Fact Sheet: Simplified Interline Settlement (SIS)

  • SIS is the electronic invoicing platform developed by IATA in order to remove all paper from the invoicing and settlement of industry services. The service was inaugurated in October 2011
  • As part of the design, the industry has agreed to a single standard for the data content of electronic invoices (IS-XML), allowing recipients to process and validate incoming invoices automatically. The use of a single standard simplifies business activity for all parts of the industry, and allows suppliers to use one invoicing standard for all of their airline customers
  • SIS identifies invoices that are for settlement by the IATA Clearing House (ICH) and enters the claim itself, removing the need for issuers to make a separate entry to the ICH
  • At the end of 2013 more than 500 airlines and other industry service providers were signed up to SIS
  • In 2013, over $60 billion in invoices were processed through the service for settlement by the ICH and other industry settlement services
  • A further $2 billion of other e-invoices were processed by SIS where settlement was managed by the parties concerned
  • The service is being used by airlines and other service providers in 163 countries, making it possibly the most widely used e-invoicing service in the world

With the active support of the airlines and supplier community, service participation is progressively expanding throughout the air transport industry

Updated: December 2013

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