Dealing with HMRC – guidance

Government Gateway: accessing public API portal

Guidance for software developers using the public API portal.


ISV developer help - SOAP & TXE interfaces version 2.2

Government Gateway public methods version 1.0

Government Gateway, hints and tips for developers using the public API (17/10/08): v1.1

Test data: 6.0

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Guidance on: * ISV developer help: SOAP and TXE interfaces * Government Gateway public methods * Test data