Stamp Duty Land Tax: generic technical specifications
Guidance for Stamp Tax Online software developers on Government Gateway, HMRCIRmark and stamps taxes.
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Generic technical specifications for Stamp Tax Online software developers.
Published 1 January 2014
Last updated 22 March 2018 + show all updates
Last updated 22 March 2018 + show all updates
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The stamp taxes help chart has been removed as the information is out of date and no longer required.
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First published.