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This factsheet tells you about the penalties HMRC may charge if there has been an under-assessment and you have not told us about it within 30 days.
Check the availability and any issues affecting the E-PAYE for agents online service.
Benefits and tips on how to get your tax return done early.
The rules and guidelines HMRC follows to resolve tax disputes.
Employers and traders, HMRC may ask for a deposit or bond.
What to do if you’ve been involved in a tax avoidance scheme and receive a follower notice or accelerated payment notice from HMRC.
Learn more about the support available for Alcohol Duty.
Find out how to protect your login details and reduce the risk of fraud when using HMRC online services.
The PAYE recognition for payroll software developers page is for software developers who've completed development and testing and want to apply for PAYE recognition.
Information about a tax avoidance scheme that tries to disguise income and other taxable profits as loans or fiduciary receipts by using a remuneration trust.
Find software developers that can help with entry summary declarations including safety and security declarations for imports.
Technical guidance on who, from 6 April 2016, will be a Scottish taxpayer. Includes guidance on an individual’s ‘place of residence’, ‘main place of residence’, tests for Scottish taxpayer status and evidence used to establi…
Agent authorisation Construction Industry Scheme technical specifications for software developers.
Tax treaties and related documents between the UK and Anguilla.
Check the availability and any issues affecting the Charities online service.
Find out what information and documents you need to give HMRC if you get a financial institution notice.
CT600 V3 (2025) and V2 (2009) RIM artefacts for Corporation Tax software developers.
Get help if you’re a tax agent or adviser who has clients with private and personal expenditure to declare on Self Assessment tax returns.
National Insurance guidance for software developers working with payroll software.
If your agent business is based outside the UK and HMRC has approved your application you should finish setting up your agent services account.
Don’t include personal or financial information like your National Insurance number or credit card details.
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