Self-Assessment Tax Return Specialists for Individuals, Landlords & Business Owners Across London
Filing a Self-Assessment tax return shouldn’t be stressful, but for many people in London, it is. Between dealing with multiple income sources, property portfolios, foreign income, crypto gains, and HMRC’s strict deadlines, it’s easy to feel overwhelmed.
If you file your tax return late, incorrectly, or miss claiming key allowances, the result is often:
That’s why so many individuals trust AccounTax Zone for their Self-Assessment tax return in London, a service built for people who want accuracy, compliance, and peace of mind.
If you’re unsure whether you need to file, ask us. Most HMRC penalties come from people who didn’t realise they were required to register.
Our Self-Assessment Tax Return Service in London Includes:
Full Review of All Your Income Sources
We ensure every income stream is captured accurately:
Employment income
Dividends
Rental profits
Overseas income
Self-employment accounts
Crypto transactions
Capital gains
Child benefit & HICBC
Benefits in kind
Pensions
Maximising Tax Reliefs & Allowances
To reduce your tax bill legally, we identify:
Allowable property expenses
Capital allowances
Pension contributions
Trading allowance
Gift Aid
Crypto pooling relief
Capital gains tax exemptions
SEIS/EIS relief
Director salary/dividend optimisation
Preparing Accurate Calculations
We ensure:
Correct tax bands
Correct personal allowance
Correct capital gains computations
Correct foreign income treatment
Correct loss relief application
Compliance & HMRC Risk Reduction
We minimise:
HMRC enquiries
Incorrect coding notices
Penalty exposure
Overpayment of tax
Submission & Digital Records
We file your return electronically and provide:
Submission receipt
Final tax calculation
Payment deadlines
Recommendations for next year
Why Choose AccounTax Zone for Your Self-Assessment Tax Return London?
We support a wide variety of clients as an expert accountant in Beckenham, including, but not limited to:
London-based specialists in complex returns: We handle Self-Assessment for directors, landlords, contractors, high earners, foreign-income individuals, and crypto investors.
Fast turnaround & fixed fees: No surprise charges – clear, transparent pricing.
Dedicated accountant access: Speak to a human, not a helpline.
Proactive tax-saving advice: We don’t just file your return, we optimise it.
HMRC-registered agents: We deal with HMRC so you don’t have to.
No last-minute stress: We plan ahead and avoid “January panic.”
Who We Work With
We specialise in working with:
Landlords & property investors
Company directors & shareholders
High-income earners (£100k++)
Consultants & contractors
IT professionals & tech workers
Crypto investors & traders
Non-residents & non-doms
Creators & influencers
Uber, Deliveroo & gig workers
Freelancers & self-employed individuals
Common Problems We Solve
❌ “My taxes are too high.”
→ We legally reduce your bill through reliefs.
❌ “I’m worried about HMRC mistakes or penalties.”
→ We ensure accuracy and compliance.
❌ “I don’t know what expenses I can claim as a landlord.”
→ We optimise property deductions.
❌ “I have crypto gains and don’t know how to report them.”
→ We calculate and report CGT correctly.
❌ “I earn salary + dividends + rental income.”
→ We structure your taxes for efficiency.
❌ “I left my tax return too late.”
→ We can still complete it quickly and minimise penalties.
Our 4-Step Self-Assessment Process
1. Consultation & Document Collection
You send us your income details securely.
2. Review & Tax Optimisation
We analyse all income sources and apply all available reliefs.
3. Draft Return for Your Approval
You review before anything is submitted.
4. HMRC Submission & Confirmation
We file your return and send proof of submission.
Avoiding Penalties for Self-Assessment
Missing deadlines leads to:
£100 instant fine
Daily penalties after 3 months
Interest on unpaid tax
Late payment penalties
Increased risk of HMRC audit
We ensure you never face unnecessary penalties again.
FAQs – Self-Assessment Tax Return London
Who needs to file a Self-Assessment tax return in the UK?
You must file a Self-Assessment return if you’re self-employed, a landlord, a company director, a high earner (£100k+), receive dividends, have foreign income, earn money from Airbnb or gig platforms, trade crypto, or have any untaxed income. If you’re unsure, we can confirm your eligibility in minutes.
What documents do I need for my Self-Assessment tax return?
We provide a full checklist tailored to your situation.
How much does a Self-Assessment accountant in London cost?
Fees vary depending on complexity. For straightforward returns, prices start from £175+VAT per annum, while more complex cases (crypto, rental portfolios, foreign income, high earners) cost more. We always provide a fixed fee before starting any work.
What happens if I miss the Self-Assessment deadline?
HMRC immediately issues:
£100 fine for missing 31 January
Daily penalties after 3 months
6- and 12-month penalties for ongoing delays
Interest on unpaid tax
We can still file your return and help reduce or appeal fines where possible.
Can you help if I’ve never filed a tax return before?
Yes, many clients come to us for their first Self-Assessment. We register you with HMRC, gather all required documents, complete the return, and advise you on what to track going forward.
Do you handle late or previous-year tax returns?
Absolutely. We regularly complete:
Late returns
Backdated returns
Amended returns (if previous accountant made mistakes)
HMRC enquiry responses
We help minimise penalties and bring your tax position up to date.
Can you complete my Self-Assessment if I have crypto trading or multiple exchanges?
Yes. We specialise in crypto tax:
Wallet tracking
Pooling rules
Gains/loss calculations
DeFi, staking, NFTs
HMRC-compliant reporting
Most London accountants don’t understand crypto, we do.
Do landlords need to file a Self-Assessment tax return?
Yes, all landlords earning rental income must declare:
Rental profits
Mortgage interest
Property expenses
Repairs
Capital allowances (where applicable)
Airbnb/short-let income
We ensure you claim every allowable deduction.
I am a director, do I still need to file a Self-Assessment return?
Yes, company directors normally must file, especially if they:
Take dividends
Have multiple income sources
Receive benefits in kind
Operate directors’ loans
We optimise your salary + dividend structure to reduce tax.
Can you help if I have foreign income or overseas property?
Yes, we handle:
Overseas employment income
Foreign property rental
Dividends & interest
Remittance basis
Double tax relief
Non-resident and non-dom rules
London clients often have complex international tax needs — and we specialise in them.
How long does it take to complete a Self-Assessment tax return?
Once we receive all your documents, most returns are completed within:
3–5 working days (standard)
24–48 hours (priority service available)
We also offer same-day submission for urgent cases.
Will you deal with HMRC on my behalf?
Yes. As your authorised agent, we:
Submit the return directly
Respond to HMRC queries
Handle coding notice issues
Resolve discrepancies
You won’t need to speak to HMRC at all.
Can you reduce my tax bill legally?
Yes, most clients overpay tax without realising. We apply all available reliefs, allowances, and tax planning strategies to reduce your liability legally and ethically.
Do you offer Self-Assessment services for non-residents?
Yes, we file returns for:
UK property owners abroad
Overseas employees with UK income
Non-doms
British expats
Individuals receiving foreign remittances
We ensure the correct UK tax treatment is applied.
Book Your Self-Assessment Tax Return Service in London
Whether you are a landlord, director, freelancer, contractor, high earner, or someone with multiple income streams, your tax return deserves expert care.
Join Hundreds of Happy SMEs getting services from our expert Accountant
Google Reviews
I've been working with Accountax for nearly three years and have had a favorable experience. The team, particularly Sheraz , is highly knowledgeable and always available to address any questions. I highly recommend his services to any business seeking a skilled accountant to oversee their tax affairs and assist with accounting or R & D Tax claims.
Amro Tuhami 21 April 2024
I’ve recommended Ali and his colleagues at Accountax Zone Ltd to multiple friends and they have delivered on every occasion. Professional and knowledgeable; they always come up with the best solutions for both simple and complex accounting and financial issues.
Tony Burkson 21 February 2024
I am thoroughly satisfied with Accountax Zone Limited's services. They are skilled, cooperative, and supportive, managing all my financial needs efficiently and at an affordable price. Highly recommended!
Ali Nouman 21 April 2024
I've been using them for over three years now, and I'm very happy with theirs services and fees. Arshad was really helpful when I needed an advice for my business.
AllinOne ProductsGB 21 March 2024
Efficient & super friendly. Very happy
Sean Grealish 21 August 2022
Very Professional and proactive accountants. Highly recommended 👌
Mohammed Saeed 21 August 2023
Professional work. Great at keeping records maintained and up to date service.
GLOBAL EXPRESS FREIGHT 21 April 2024
I’ve been working with Ali at Accountax Zone for the last few months. Ali has been so helpful and knowledgable as he’s been guiding me through the set up of my group of property companies. An accountant with experience in the construction industry - exactly what I needed! 👏🏼
Belinda Bambrick 21 March 2024
Ali Arshad has been a great support. The flexibility he offered is praiseworthy. Anytime we have a matter to discuss, Ali has done his best to be available to help, at times, even outside of typical working hours. Thanks, Ali!
Fahad Aijaz 21 March 2024
We have been working with Sheraz & Accountax Zone for several years and they provide a professional service supplying timely & knowledgeable support.
Tony Myers 21 June 2024
Hard worker Team. Professional Director of operations Mr. Ali Arshad
Lama Mirza 21 March 2024
I have used this company for several years and they are brilliant. I run a single-handed business, and accounts are not my strong point. Sammar tries to keep me on track and patiently explains the intricacies of Xero. Strongly recommended!
Ian Ford 21 March 2024
Amazing service. Sharaz and the Accountax Team do my monthly and self Assessment accounts, reporting and submissions with more care, accuracy, lower costs and less work on my part than any of the previous accountants I have worked with. I highly recommend my favourite accountants.
Eny Osung 21 July 2024
I am using AccounTax Zone for my company and personal accountancy needs, and I have found Mr. Sheraz and his team are very professional, proactive, and knowledgeable! Their expertise and dedication have truly made a difference in managing my finances. I am always impressed by their professionalism and knowledge, and I highly recommend AccounTax Zone to anyone in need of an outstanding accountant.
Sujit Patel 21 April 2024
Profesional and courteous, and mr Sheraz Ahmad is always available and helpful
Camelia Jalilian 21 March 2024
Great experience using accountax zone for my accounts over the last couple of year's, always quick to respond to any questions or help that I needed, would highly recommend them. Thanks Guys
Dan May 21 April 2024
Accountancy firms are rarely able to provide such valuable and pragmatic advice to help you grow your business. I have been in the construction business for years and I will take AccounTax Zone's top tips as a blueprint for scaling up my construction business.
Bunny Plays 21 August 2023
Sheraz has been absolutely incredible over the years in helping me and my companies with invaluable advises. A solid reliable pillar for any company in UK needed accounting services. Highly recommend.
Fabrizio Moscon 21 March 2024
Professional service, the team is responsive and very knowledgeable We have been working with them for several years and plan to continue for many more
Arnaud Hatte 21 March 2024
I have been a client of Accountax for almost three years. My experience with the team at Accountax has been positive. Ali Arshad is very knowledgeable and ready to help with any query. I have gotten decent advice from him on tax management and investment. I strongly recommend him to any business looking for an accountant to manage the tax account and help with accounting or investments.
Mohammad Usaid Abbasi 21 March 2024
Great experience with this company. Ali Arshad was very efficient and was always available for advice, would definitely recommend their services.
Iman 22 21 March 2024
I have been using AccounTax Zone for my accountancy needs, and I am very happy with their services. They are extremely knowledgeable and professional. They make everything easy to understand and are always available to answer any questions I have. I highly recommend their services to anyone in need of an accountant. Great job!
priyanka ben patel 21 May 2024
Great quality services and very professional staff. Highly recommended!
M Ayaan 21 August 2021
I have used the Accountax Zone team for my companies tax reporting for over two years and have consistently been impressed with the way that they handle my business. My account manager, Subhan, is always prompt and diligent in replying to any questions I have about my tax returns, or the wider implications of new rules on my business. I would highly recommend working with this team!
James Frith 21 March 2024
I am glad that we selected Accountax zone services for our accounts management. They have in depth understanding of accounts matters and provided professional services.
Usman Zahidi 21 August 2023
I moved over to Account Tax Zone about 5 years back and never looked back. Much much better service, ahead of the game & better value too.
tahir shah 21 April 2024
Why trust us as an expert accountant? Let our clients explain…
Mr. Jose Manuel
Director – London House Group Ltd
Ms. Vicky Kondal
Managing Director – One Healthcare Ltd
Mr. Riz Hassan
Co-Founder & Chief Business Officer – Invixible Ltd
Mr. Tony Burkson
CEO & Executive Chairman – VAOB Group
Happy Clients, Happy Us!
AccounTax Zone has been a game changer for my property partnership. I have saved a significant amount in taxes because of their proactive, knowledgeable, and tax-saving advice. My property portfolio is now being incorporated by them, and I am very happy with their services. Highly recommended.
M Saeed – Partner Galaxy Partners
Accountancy firms are rarely able to provide such valuable and pragmatic advice to help you grow your business. I have been in the construction business for years and I will take AccounTax Zone’s top tips as a blueprint for scaling up my construction business.
Ranjit Singh – Director Best Building Works Ltd
I’ve recommended Ali and his colleagues at Accountax Zone Ltd to multiple friends and they have delivered on every occasion. Professional and knowledgeable; they always come up with the best solutions for both simple and complex accounting and financial issues.
Tony Burkson – CEO & Executive Chairman VAOB Group
Sheraz has been absolutely incredible over the years in helping me and my companies with invaluable advises. A solid reliable pillar for any company in UK needed accounting services. Highly recommend.
Fabrizio Moscon – Director Hoxfon Ltd
I’ve been working with Ali at AccounTax Zone for the last few months. Ali has been so helpful and knowledgable as he’s been guiding me through the set up of my group of property companies. An accountant with experience in the construction industry – exactly what I needed! 👏🏼
Belinda Grace – CEO Belinda Grace Group ltd
Professional service, the team is responsive and very knowledgeable We have been working with them for several years and plan to continue for many more
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