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Find technical specifications for Alcohol and Tobacco Warehousing Declaration (ATWD) software developers.
The Open Networks Research and Development (R&D) Fund is the £250 million government supported programme to deliver upon the UK’s 5G Supply Chain Diversification Strategy.
Find guidance on PAYE updates for software developers.
Find guidance and technical specifications for software developers on the IRmark.
Find technical specifications and schemas for National Export System (NES) XML channel software developers.
The Land Environment Tactical Communications and Information Systems (LETacCIS) Programme aims to deliver tactical military communications.
How to apply for an exemption to use a restricted substance to manufacture electrical and electronic equipment.
Technical specifications for New Computerised Transit System (NCTS) software developers.
Use this guidance for support if you're a software developer working with the Self Assessment Online service.
Guidance on APIs and how to find commercial software suppliers for different HMRC online services.
If you're a software developer, use the HMRC Developer Hub to learn about and integrate your applications with our RESTful APIs.
Use this list to find individual software suppliers and commercial products to use to file online with HMRC online services.
Support and technical specifications for software developers working with the Charities Online service in making repayment claims.
Information on when software applications are considered to be a medical device and how they are regulated.
Find technical specifications for software developers working with the Stamp Taxes Online service.
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