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There are different ways to register depending on which tax service you want to use on behalf of your client.
Check a list of recent emails from HMRC to help you decide if the email you've received is a scam.
Use this form if you've received a letter or email from HMRC asking you to send details to support your VAT repayment claim.
How main and supporting agents can help sole traders and landlords manage Making Tax Digital for Income Tax.
Find out the fees you need to pay HMRC for anti-money laundering supervision, and how to pay them.
Use a checklist to decide if a suspicious contact is a scam and not a genuine phone call, text message (SMS) or email.
Find out about the reverse charge for supplies of services reported within the Construction Industry Scheme (CIS).
Register your client’s trust online if you’re a tax agent or adviser.
When and how to account for VAT when you transfer a business as a going concern (TOGC).
How to work out payments and when you should make them if your company’s annual taxable profits are between £1.5 million and £20 million.
Check if you can claim a VAT refund using the DIY housebuilders scheme, if you’re building a new house.
Find out what sector of businesses are covered by the Money Laundering Regulations, and which premises you'll need to register.
Learn more about getting started with Self Assessment including registration, tax returns, tax bills and payments.
If you've been sent a letter or asked by HMRC, use this form to send evidence of your personal details.
Use the online tool throughout a check to guide you through each stage and to access the support available.
Find out what the Self Assessment for Agents online service is for, what you can do in the service and how to do it.
Changes to late submission penalties and late payment penalties if you’re required to use Making Tax Digital for Income Tax from April 2026.
Licensing authorities must confirm a tax check has been completed by applicants renewing taxi driver, private hire and scrap metal licences, or applying for a licence held with another authority.
Find out the different ways you can get client authorisation including the digital handshake, Online Agent Authorisation service, paper forms and through your client's business tax account.
Information to help tax agents and advisers find guidance, use HMRC's services and contact HMRC.
Don’t include personal or financial information like your National Insurance number or credit card details.
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