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Register to vote Register by 18 June to vote in the General Election on 4 July.
Find Document Submission Protocol guidance for architects, software developers and other parties interested in building Transaction Engine client applications.
Find technical specifications for software developers working with the Corporation Tax online service.
How to choose data tools and infrastructure that are flexible, scalable, sustainable and secure.
Procurement options available from the Crown Commercial Service for the public sector.
This publication seeks views on the cyber security risks of software used by businesses and organisations, and where government should seek to mitigate them.
Find software developers that can help with entry summary declarations including safety and security declarations for imports.
How to send information to Companies House through our extensible markup language (XML) schemas, by purchasing software or developing your own.
Use Digital Marketplace (previously CloudStore) to find digital specialists, cloud-based services and technology to build digital services for the public sector, eg cloud technology, IT health checks, technical architects, web designers
Farm software companies that have successfully passed testing for the Cattle Tracing Service (CTS) Web Services.
If you're a software developer, use the HMRC Developer Hub to learn about and integrate your applications with our RESTful APIs.
Specifications and guidelines for Real Time Information internet submissions and for the outgoing Data Provisioning Service.
Manage, check and withdraw permission you've given to software applications to share and update your tax information
How to get fast-track approval of medical devices during COVID-19.
Guidance on APIs and how to find commercial software suppliers for different HMRC online services.
Publish your code and use open source to improve transparency, flexibility and accountability.
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