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How to register as a software developer with HMRC.
Find out the expectations for good use of generative artificial intelligence (AI) in commercial software products that help customers submit information to HMRC.
Check a list of software developers who can provide Customs Declaration Service software.
HMRC's newsletter for software developers for Making Tax Digital for Income Tax.
Find software developers that can help with entry summary declarations including safety and security declarations for imports.
Use this list to find individual software suppliers and commercial products to use to file online with HMRC online services.
Information for developing and testing of software for HMRC forms, returns and messages.
Specifications and guidelines for Real Time Information internet submissions and for the outgoing Data Provisioning Service.
Do not include personal or financial information like your National Insurance number or credit card details.
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