Please note HM Revenue & Customs guidance can be found on the GOV.UK website. We provide links to the key information below.
Contact HMRC
Contact details, webchat and helplines for enquiries with HMRC on tax, Self Assessment, Child Benefit or tax credits (including Welsh language services).
Tell HMRC about a change to your business
Tell HMRC about changes to your business – a change of name, address, legal structure or business activity.
Tell HMRC about a change to your personal details
How to tell HMRC if there’s a change to your personal details – address, name, income, marital status, gender.
Get help from HMRC if you need extra support
HM Revenue & Customs can help you if you need extra support because of your condition or circumstances.
Get help with tax
Getting help with tax returns, allowances, tax codes, filling in forms and what to do if you owe HMRC.
Appoint someone to deal with HMRC on your behalf
Authorise someone to deal with HMRC for you – how to appoint an agent, friend, relative or voluntary organisation.
Authorising an agent to deal with your tax affairs
Check what a paid agent can do on your behalf. How you authorise the agent depends on the tax, and you may need to use paper form 64-8 or an online service.
Help friends or family with their tax
Register as a ‘trusted helper’ to manage tax online for a friend or relative, or call HMRC for someone else.
If you have not told HMRC about income
Tell HMRC about undeclared income, self-employment, capital gains, profits in a company and foreign income.
Tax compliance checks
Tax compliance checks – what HMRC can check, how the checks are conducted and what you’ll need to do.
Appeal to the tax tribunal
Appeal to the First-tier Tribunal (Tax) against tax decisions how to appeal, the hearing, if you lose your case.
VAT visits and inspections
VAT checks by HM Revenue and Customs – VAT officers inspecting your VAT record keeping and business premises.
