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A Chartered Tax Adviser (CTA) is a tax specialist who has passed the Chartered Institute of Taxation’s CTA exams, completed three years of relevant experience and joined the CIOT. Only CIOT members can use the CTA title, but anyone can give tax advice in the UK, so it pays to check who you hire.
If you need help with a tax return or tax planning, our UK tax advisers work with individuals and businesses across the country. This guide covers what a CTA does, how they compare with accountants and how to choose a tax adviser in 2026.
A Chartered Tax Adviser advises individuals and businesses on UK tax law, prepares returns and deals with HMRC for clients. The work depends on the employer, with larger firms allowing more specialisation and smaller practices covering a wider mix.
Typical work includes:
No. A CTA holds a specialist tax qualification from the CIOT, while accountants qualify through bodies such as ACCA and cover accounts, audit and tax.
| Adviser | Professional body | Main focus | Typical client work |
| Chartered Tax Adviser (CTA) | Chartered Institute of Taxation (CIOT) | Tax law and planning | Complex planning, trusts, HMRC disputes, technical tax advice |
| Taxation Technician (ATT) | Association of Taxation Technicians | Tax compliance | Tax returns, calculations, routine HMRC work |
| Chartered Certified Accountant | ACCA | Accounts, audit and tax | Annual accounts, Self Assessment, Company Tax Returns, VAT, audit |
Many people use both, with an accountant for yearly compliance and a CTA for one-off technical questions. At MMBA Accountants, our team are Chartered Certified Accountants who handle accounts and tax together.
Most individuals and small businesses don’t need a CTA for routine returns, because a qualified accountant can prepare them. A CTA’s depth matters most when the tax question is complex, high value or disputed.
A qualified accountant usually handles Self Assessment, rental income and Capital Gains Tax reports through personal tax advice services. For companies, Corporation Tax accountants prepare the accounts and Company Tax Return together, which saves passing figures between firms.
Check the adviser’s qualification, HMRC registration and scope of work before you hire them. These five steps cover the basics:
Since 18 May 2026, anyone paid to deal with HMRC on a client’s behalf must register with HMRC as a tax adviser, with deadlines staggered by adviser group. HMRC says an unregistered adviser may not be able to act for you, according to its registration guidance.
You pass seven CIOT exams, complete three years of relevant experience that includes UK tax, and apply to join the CIOT with two sponsors. The exams on the CIOT direct route are:
| Stage | Exams | Papers |
| Computer-based exams | 3, one hour each | Law, Principles of Accounting, Professional Responsibilities and Ethics |
| Awareness | 1 exam, 3 modules | Modules can’t match your Advanced Technical subjects |
| Advanced Technical | 2 | Two specialist papers, such as individual, owner-managed business or larger company taxation |
| Application and Professional Skills | 1 | Case study paper, one of five options |
The CIOT is changing the structure for students who enrol from autumn 2027, with the first new exams in May 2028. Check the CIOT qualification review before you start.
A Chartered Tax Adviser brings deep technical tax knowledge, backed by CIOT exams and three years of experience. For most returns and yearly planning, a qualified accountant who knows your figures can do the job.
Our team provides tax advice for individuals and businesses, with fees agreed upfront after understanding your requirements. Book a free initial consultation to talk through your tax position.
Yes, only CIOT members can call themselves a Chartered Tax Adviser. The title is protected, but tax advice itself isn’t a reserved activity, so anyone can offer it.
There’s no fixed time. You must pass seven exams and complete three years of relevant experience, which can run before, during or after your studies.
No, a CTA is a tax qualification from the CIOT. Chartered and Chartered Certified Accountants qualify through accountancy bodies, such as ACCA, and cover accounts, audit and tax.
Search the CIOT’s Find a Member directory or contact the CIOT membership team. A CTA can only use the title while they remain a member.
Yes, anyone paid to deal with HMRC for a client must register, with registration online since 18 May 2026. Advisers who don’t register may lose the right to act for clients with HMRC.
ATT is the Association of Taxation Technicians qualification for tax compliance work. CTA is the CIOT’s advanced qualification, and ATT members can go on to sit the CTA exams.
