Software development support

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Guidance and regulation

• Software developers providing customs declaration software
  • Detailed guide
  • 26 April 2024
  • HM Revenue & Customs
• Automatic Exchange of Information schema and supporting documents
  • Guidance
  • 24 May 2018
  • HM Revenue & Customs
• Submitting EC Sales List declarations online using CSVs
  • Detailed guide
  • 28 January 2020
  • HM Revenue & Customs
• Software developers: payroll test data 2024 to 2025
  • Guidance
  • 8 March 2024
  • HM Revenue & Customs
• Self Assessment technical specifications for software developers
  • Guidance
  • 20 January 2023
  • HM Revenue & Customs

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Organisations

• HM Revenue & Customs