We use some essential cookies to make this website work.
We’d like to set additional cookies to understand how you use GOV.UK, remember your settings and improve government services.
We also use cookies set by other sites to help us deliver content from their services.
You have accepted additional cookies. You can change your cookie settings at any time.
You have rejected additional cookies. You can change your cookie settings at any time.
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
Find technical specifications for software developers working with the Corporation Tax online service.
Specifications and guidelines for Real Time Information internet submissions and for the outgoing Data Provisioning Service.
Use Self Assessment software to help populate your Self Assessment tax return.
Farm software companies that have successfully passed testing for the Cattle Tracing Service (CTS) Web Services.
Guide to licensing requirements and restrictions for trade control and the export of controlled military goods, software and technology.
Follow this guidance if you’re responsible for choosing, buying and managing Software as a Service (SaaS) tools in your organisation.
This manual describes the software specification behind producing the Advisory Report for Display Energy Certificates.
Check for free and paid-for software recognised by HMRC that you can use to report PAYE information online.
The government is asking for industry views on a draft code of practice for software vendors to improve the resilience and security of software.
Find a list of simple record keeping applications, including cash basis and simplified expenses specifications.
Manage, check and withdraw permission you've given to software applications to share and update your tax information
A list of changes to the schemas used by third-party software to file and search company information with Companies House.
Find software suppliers for tax returns, supplementary pages and attachments.
Support and technical specifications for software developers working with the Self Assessment online service.
Guide to licensing procedure and other restrictions for export of controlled dual-use items, software and technology, goods for torture and radioactive sources.
List of companies who advised the New Computerised Transit System project team of their intention to develop commercial software solutions for NCTS.
Don’t include personal or financial information like your National Insurance number or credit card details.
To help us improve GOV.UK, we’d like to know more about your visit today. Please fill in this survey (opens in a new tab).