Running a business comes with plenty of financial responsibilities, from company registration to managing taxes throughout the year.
While many business owners work with accountants to keep their finances organized, an experienced tax consultant can also help with tax planning, compliance, and avoiding costly mistakes.
To save you time, I rounded up the best tax consultants in London and highlighted the firms known for reliable advice, responsive service, and practical solutions. Stay on top of your business finances today.
How much does a tax consultant cost in London?
Hiring a tax consultant in London typically costs £150 to £1,000+ for fixed-fee services, while bespoke tax advice generally ranges from £70 to £250+ per hour.
The final cost depends on the complexity of your tax situation and the type of support you need.
| Service Needed | Average London Cost Estimate |
| Basic Self-Assessment | £150 – £500 (Fixed Fee) |
| Complex Tax Return | £501 – £1,000+ (Fixed Fee) |
| Hourly Advisory | £70 – £250+ per hour |
| HMRC Investigation Support | £1,000+ (Fixed or hourly) |
| Small Business Package | £150 – £500 per month |
How I Reviewed
Technical Specialization: I looked for consultants with strong experience in complex tax work, including business taxes, private wealth, and corporate matters. This helped me find experts who can handle more than basic tax returns.
HMRC Experience: I gave higher ratings to firms with a solid history of dealing with HM Revenue and Customs (HMRC). That kind of experience can make tax reviews and audits much less stressful.
Forward Planning: I focused on consultants who help clients plan ahead instead of only filing paperwork. Smart tax planning can save money and reduce future problems.
Industry Reputation: I checked recent client reviews, professional recognition, and overall reputation. I wanted firms that consistently deliver reliable service and trusted advice.
1. Accotax – Chartered Accountants in London & Tax Consultants
Website: accotax.co.uk
Address: 12 London Road
Contact: 0800 644 1258 | [email protected]
Hours: Monday to Friday 9:00 AM–5:30 PM
Accotax helps businesses manage money with trusted accounting help and strong pro backing across the board. With ICAEW and ACCA titles, the firm shows a clear focus on rules-based work.
From what I’ve seen, online company setup can be done in under three hours, making the whole start-up process feel much easier. Fast online quotes also make it easier to grasp what’s on offer before you move ahead with anything.
The monthly plans here cover key money tasks, letting business owners focus more of their time on growth.
Keep in mind, however, that help stays limited to weekday hours, so weekend help isn’t available. Work is also more geared toward London-based firms in the area.
Customer Reviews
Professional and attentive tax service
This is my 1st experience working with Accotax. They are a professional, organized, and a well run team.My tax consultant Saba provided top service and undivided attention even to the slightest of details. I am glad my tax returns are handled by someone with her qualities and would like to wish her and accotax the best of luck
- Ahmed Al-Quraishi | Google Reviews
Reliable service for over a decade
I have used Accotax for preparing & checking my Self Assessment Tax return for the last 12 years. I have always found the service reliable, prompt and thorough. Accotax have the know how to best manage tax affairs and are always happy to provide help and support. In the last few years Muhammad Saifullah has been my consultant. He is great to get along with, have enjoyed working with him, has always provided 1st class service backed by a comprehensive and extensive knowledge.
- Mr John | Google Reviews
2. Expatriate Tax Services London LTD
Website: https://expatriatetax.london/
Address: 16 Upper Woburn Place
Contact: 44 0203 282 1649 | [email protected]
Hours: Monday to Friday 9:00 AM–6:00 PM
Expatriate Tax Services London LTD helps make cross-border tax needs simple with expert advice and personal care. The firm mixes Big 4 skill with a boutique feel, giving clients direct access to the founder instead of being passed around from staff to staff.
They have a network of over 80 global firms that helps with tricky dual-country tax matters. Clients can get assistance with HMRC rebates for move costs.
What I like most is how the firm offers a free first review that helps explain what’s on offer before you take the next step.
However, one thing to note is that the small team leans heavily on a single key person, which may mean slower replies during busy tax times.
Customer Review
Helpful advice on UK residence
Oliver Heslop at Expatriate Tax Services London Ltd was tremendously helpful in advising me of my UK residence tax status over a number of years and also assisting me with my national insurance/ state pension backdated payments application. I would highly recommend Oliver for any similar support you may need.
- Karl Bullock | Google Reviews
3. Lawrence Grant LLP
Website: lawrencegrant.co.uk
Address: 2nd Floor, Hygeia House, 66 College Road
Contact: 44 020 8861 7575 | [email protected]
Hours: Monday to Friday 9:00 AM–5:30 PM
Lawrence Grant LLP helps businesses plan taxes with clear advice that gives owners a lot more control.
The team starts work before the tax year ends, giving time to weigh salary and dividend picks. Direct help with hard HMRC talks is also part of the support on offer here.
The firm brings over 50 years of skill to tricky tax matters of all kinds. They also have a link with the Geneva Group International (GGI) network, which gives clients access to global pros when going abroad.
Keep in mind, however, that long tax checks can grow costly over time. Looking into fee protection cover first may help cut costs if a full check runs longer than planned.
Customer Reviews
Great help with self assessment
I thought Lawrence Grant was great when they helped me with my Self Assessment tax return. They always kept me up to date, and found their cloud system made the process of sending and returning essential paperwork really helpful. I would thoroughly recommend them.
- Laura | Google Reviews
Responsive and user friendly support
Super responsive and on top of everything. Pragmatic tax advice and very user friendly for startups. They’re now handling our personal tax filings, our corporation tax filings, monthly bookkeeping and VAT submissions. Ajay Shah, Alexandra Mirauta and their other team members are always providing detailed guidance and advice. Highly recommended.
- Sarmad Saleh | Google Reviews
4. Saffery
Website: saffery.com/offices/accountants-london/
Address: 71 Queen Victoria Street
Contact: 44 020 7841 4000 | [email protected]
Hours: Monday to Friday 8:00 AM–6:00 PM
Saffery helps ease tax check worries with the Tax Enquiry Fee Protection plan, covering up to £125,000 in pro fees each year. This helps clients dodge surprise costs while getting real help through the whole process from start to finish.
The firm’s Nexia network backs global tax needs and cross-border work of all kinds.
I love that they offer a 24-hour legal line with barristers and lawyers, which adds extra peace of mind at any time. Also, they have a transfer pricing approach that helps firms manage risks tied to fines and penalties.
Just keep in mind that late returns aren’t part of the plan. Higher-earning partners may also need extra cover, which can mean more planning before you sign up.
5. Tax Advisory Partnership
Website: taxadvisorypartnership.com
Address: 14 Devonshire Square
Contact: 44 0 20 8037 1100 | [email protected]
Hours: Monday to Friday 9:00 AM–5:30 PM
Tax Advisory Partnership helps make hard tax work feel much easier with clear tips and plain talk.
As a Chartered Tax Adviser (CTA) firm, the team sticks to high-pro rules at every step. Their Enrolled Agents help US taxpayers by dealing straight with the IRS on their behalf.
Beyond tax help, clients can pick fixed-fee pricing for custom advisory work, which helps dodge surprise bills down the line. They also have Cyber Essentials Plus status that adds a layer of care for private money details.
Keep in mind that the firm only started in 2010, so it has less history than older businesses. Some support staff is still in training as well, which may mean less depth in some areas.
Customer Reviews
Professional capital gains tax support
Tax Advisory Partnership handled our Non-Resident Capital Gains Tax return in the most professional way, and relieved us of a lot of worry. (It was impossible for us to navigate the HMRC website, so finding such a competent tax accountancy firm to do this for us was a godsend.) And all this for a very reasonable fee. Many thanks to James & Emily for the excellent work.
- David LLOYD OWEN | Google Reviews
Excellent service and deep knowledge
Sophia and the team at Tax Advisory Partnership provide excellent, reliable and high quality service. They are responsive, knowledgeable thorough and highly professional. They are able to deal with complex tax returns and even went above and beyond in helping me deal with mistakes made by a previous tax advisor. I would wholeheartedly recommend them to anyone looking for a tax advisor.
- Alidad Moghaddam | Google Reviews
