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'Find out what you need to know if you disagree with a decision made by HMRC and how tribunals work.
How to pay General Betting, Pool Betting or Remote Gaming Duty, and how long it takes for your payment to reach HMRC.
A guide to the role of the Adjudicator and Adjudicator’s Office when investigating complaints about HM Revenue & Customs and the Valuation Office Agency.
Get guidance from HMRC if you're a tax agent or adviser
Find out about the increased subscription limit from 6 April 2020 and get technical help to submit Child Trust Fund return information electronically.
This factsheet contains information about when HMRC use third party information notices.
Find out about information notices HMRC may give when checking whether you or another person has to pay a penalty for enabling abusive tax arrangements.
This factsheet explains about checks on records and assets when HM Revenue and Customs visit a business premises.
Check the availability and any issues affecting the Confirm an applicant has done a tax check service.
iXBRL samples for Corporation Tax Online software developers.
Check the availability and any issues affecting the Employers PAYE payment plan service.
Check the availability and any issues affecting employment intermediaries.
Get help if you’re a tax agent or adviser who has clients with capital allowances for plant and machinery to declare on Self Assessment and Company Tax returns.
Get help if you’re a tax agent or adviser who has clients with Income Tax losses to declare on Self Assessment tax returns.
Find out the ISO country codes.
Tax treaties and related documents between the UK and Netherlands Antilles (Curacao,Sint Maarten and BES Islands).
Draft guidance on the operation of the Northern Ireland Corporation Tax legislation.
Use this tool if you are a software developer wanting to produce user-defined XML test scenarios.
If you received a grant but were not eligible or you’ve been overpaid, find out what penalties you may have to pay if you do not tell HMRC.
Guidance on identical returns for Self Assessment Online software developers.
Don’t include personal or financial information like your National Insurance number or credit card details.
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