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Departments, agencies and public bodies
News stories, speeches, letters and notices
Detailed guidance, regulations and rules
Reports, analysis and official statistics
Consultations and strategy
Data, Freedom of Information releases and corporate reports
Information for developing and testing of software for HMRC forms, returns and messages.
How to send information to Companies House through our extensible markup language (XML) schemas, by purchasing software or developing your own.
How to manage configuration: open source tools, writing infrastructure in code, portability.
How to choose data tools and infrastructure that are flexible, scalable, sustainable and secure.
Check a list of software developers who can provide Customs Declaration Service and Customs Handling of Import and Export Freight (CHIEF) software.
Why to deploy regularly, deployment principles to follow, and how to do it.
Guidance on defining intended purpose for Software as a Medical Device (SaMD), to help SaMD manufacturers in meeting their statutory obligations.
Technical specifications for developing software to send information to Companies House digitally.
Find Companies House-recognised filing software to manage your company accounts, returns and tax accounts
How to register as a software developer with HMRC.
Guidance on APIs and how to find commercial software suppliers for different HMRC online services.
Descriptions of team capabilities on the Digital Outcomes and Specialists framework.
Tech Minister Saqib Bhatti's speech to the National Cyber Security Centre's CyberUK 2024 conference in Birmingham.
Your purchasing strategy must show you’ve considered commercial and technology aspects, and contractual limitations.
Use this page to check which software works with Making Tax Digital for Income Tax.
Spreadsheets are a common way to share data. Use this information to help you avoid common errors, improve interoperability and create more accessible spreadsheets.
Guidance to help you plan and prepare for implementing artificial intelligence (AI).
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