Self Assessment online service for software developers
Support and technical specifications for software developers working with the Self Assessment online service.
For support on current and archived specifications contact the software developers support team by email: [email protected].
Generic technical specifications
Individual returns
Partnership returns
Trust and estate returns
Updates to this page
Published 1 January 2014Last updated 20 January 2015 + show all updates
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Self Assessment technical support 2015 published.
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First published.