Self Assessment accountants in London

Self Assessment Accountants in London

Fixed-fee tax returns for individuals and businesses in London, prepared and filed online by qualified accountants. From £199 + VAT, filed before 31 January.

★★★★★ Rated Excellent by clients on Google

Start My Tax Return

£199 + VAT

One-off fixed fee. No hidden extras.

SA100 return prepared and filed online
Employment, self-employed, rental, dividend and investment income
Tax liability calculated, refund claimed if due
Allowances and reliefs checked
Filing confirmation sent to you

Quick answers

Self Assessment help for Londoners: quick answers

London taxpayers often have more than one income stream: rental property, freelance or gig work, contracting, company dividends or investments. Our London-based accountants, with an office in Morden, SM4, prepare and file the SA100 and supplementary pages for clients in every London borough, online and by phone or WhatsApp.

Who has to file a return?

You usually need to file if you are self-employed with gross income over £1,000, a landlord with rental income over £2,500, a company director with untaxed income, a high earner over £100,000 or £150,000, or you must pay the High Income Child Benefit Charge. See all Self Assessment services.

What are the Self Assessment deadlines?

For the 2025/26 tax year: register by 5 October 2026, paper return by 31 October 2026, online return and any tax owed by 31 January 2027. A late return costs £100 straight away. See the deadline FAQ.

How much does a return cost?

SATR charges a fixed fee from £199 + VAT for a standard employed or self-employed return, agreed before you pay. Rental, company director and complex returns are priced on our pricing page.

Reviewed October 2026 by the qualified accountants at SATR, a trading style of Accotax.

Trusted by 270+ businesses

Sole traders, landlords and directors

Qualified accountants

ICAEW, ACCA and AAT qualified team

Fixed fee, no surprises

Agreed up front, paid securely online

Part of Accotax

A trading style of Accotax, accotax.co.uk

Tax returns in London

Self Assessment services for London individuals and businesses

Whether you run a business, rent out property or earn income on the side, your Self Assessment tax return has to be right and filed on time. Our qualified accountants prepare and file SA100 returns for individuals and businesses in London and across London, for a fixed fee that starts at £199 + VAT.

London is known for financial services, creative industries and technology, and we regularly prepare returns for sole traders, contractors, landlords and directors working in those fields. We work with clients in Westminster, Camden and Southwark too, so wherever you are in the area you get the same fixed-fee service.

Why London clients choose SATR

Services

Self Assessment help for every kind of London taxpayer

Sole traders

Self Assessment for sole traders in London, from £199 + VAT.

Landlords

Self Assessment for landlords in London, from £249 + VAT.

Company directors

Self Assessment for company directors in London, from £299 + VAT.

Freelancers

Self Assessment for freelancers in London, from £199 + VAT.

High earners

Self Assessment for high earners in London, from £399 + VAT.

CIS contractors

Self Assessment for cis contractors in London, from £199 + VAT.

Uber and delivery drivers

Self Assessment for uber and delivery drivers in London, from £199 + VAT.

Late returns

Self Assessment for late returns in London, from £249 + VAT.

How it works

How we prepare your London tax return

Order online

Choose your package and pay securely online. Your fixed fee is confirmed before we start.

Send your details

Complete our short questionnaire and upload your documents. We tell you exactly what we need.

We prepare your return

A qualified accountant prepares your SA100, checks reliefs and sends you the figures to approve.

We file with HMRC

Once you approve, we file online and send your filing confirmation and tax calculation.

Fixed-fee pricing

Fixed fees for London clients: pay online and we start straight away

All prices exclude VAT. Your fee is fixed for the whole return, with no hourly billing and no surprise extras.

Standard

£199 + VAT

Employed, self-employed or sole trader income

Employment, self-employment or sole trader income, plus interest and dividends

Landlord

£249 + VAT

Rental property income

Everything in Standard, plus UK property income and allowable expenses

Director & Investor

£299 + VAT

Company directors and investors

Salary, dividends, investments, capital gains on shares and crypto

Complex

From £399

High earners, non-residents, partnerships

High income, foreign income, partnerships and non-resident landlords

Not sure which fits? Get an instant quote or call 0203 4411 258.

Areas near London

Serving London and the surrounding London area

We help clients in London, Westminster, Camden and Southwark and across London. Because everything is done online, location never slows us down. Choose the nearest town or city below, or see our full list of areas we serve.

Client reviews

Rated by clients across London on Google

      EXCELLENT  
   Based on 300 reviews 
    
 
 
 
   
 
 
       Posted on Google  
   
   Jamie Fletcher 
 
 
 
 Trustindex verifies that the original source of the review is Google. It was a pleasure working with Anum on our accounts. The whole process was swift and effortless, and it was one less thing to worry about. I'd highly recommend them.
  
 
      Posted on Google  
   
   Mansur Liman 
 
 
 
 Trustindex verifies that the original source of the review is Google. Accotax have been our accountants for many years now. We maintained them, because of their professionalism. In the last coiple of years, i have working with Imran, who has been very professional and helpful in guiding us through the whole process explaining and clarifying every aspect of it. Very prompt in responding to questions and patient with us even when we seem to be slow. I really enjoy working with him. Thank you
  
 
      Posted on Google  
   
   Muna Mohamoud 
 
 
 
 Trustindex verifies that the original source of the review is Google. I highly recommend Imran to anyone looking for a reliable and knowledgeable accountant. He helped me sort out a very complicated backlog of accounts and prepared my overdue tax returns with professionalism and attention to detail.

Throughout the process, he was incredibly patient, took the time to answer all of my questions, and explained everything clearly. He guided me through each step and helped rectify issues that had built up over time, making what felt like an overwhelming situation much more manageable.

I'm very pleased with the service I've received and truly appreciate his support. If you need help with your accounts or taxes, I would highly recommend Imran.
  
 
      Posted on Google  
   
   Sergey M 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a positive experience with Accotax. The work was completed promptly, my tax return was successfully filed, and I received a refund of overpaid tax. I found the cooperation efficient and helpful. Special thanks to Muhammad Saifullah for his assistance.
  
 
      Posted on Google  
   
   Ebba Qureshi 
 
 
 
 Trustindex verifies that the original source of the review is Google. Fabulous team at ACCOTAX - very efficient and good response time . Honest and professional with their work. I would highly recommend them even if you’re a young start up - or a large business they have it covered .
  
 
      Posted on Google  
   
   Mael Leboucher 
 
 
 
 Trustindex verifies that the original source of the review is Google. We worked with a few different accountants before finally settling with Accotax, and we’re really glad we did.

Their team is great. Abdul is responsive and easy to reach whenever I have a question, which makes a big difference. They take the time to understand how our business works and what our needs are. They are very knowledgeable, and when they don’t have the answer straight away, they take the time to look into it and get back to us quickly.

Anum, who looks after our account on a day-to-day basis, including reconciling invoices and preparing the annual accounts, is amazing. She is professional, efficient, and follows the processes we have put in place together. She's also very quickin getting back to us whenever needed. We’re very happy to work with her and hope to continue doing so for as long as possible.

Overall, Accotax has made our accounting experience much smoother and easier. We see them as a long-term partner as our business continues to grow.

I would 100% recommend them.
  
 
      Posted on Google  
   
   3rd Hub 
 
 
 
 Trustindex verifies that the original source of the review is Google. Imran provides a very dependable and straightforward accounting service. He is always responsive and professional when managing our accounts. Excellent support.
  
 
      Posted on Google  
   
   Martin Tyrrell 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have really impressed to date with all dealings with Accotax highly enough. From day one, they've made what can often be a complicated and stressful part of running a business feel straightforward and hassle-free.

A special mention has to go to Anum, who has been friendly, incredibly responsive, and genuinely cares about providing the best possible service. No question is ever too much trouble, and she consistently goes above and beyond to make sure everything is dealt with efficiently.

I wouldn't hesitate to recommend you to anyone looking for an accountant they can genuinely trust.
  
 
      Posted on Google  
   
   Matthew Lyon 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great speedy service and very personable. Anum dealt with my income certificate and did everything quickly and helped me out massively. Very happy with the service provided.
  
 
  
  
 
 
    Verified by Trustindex  Trustindex verified badge is the Universal Symbol of Trust. Only the greatest companies can get the verified badge who has a review score above 4.5, based on customer reviews over the past 12 months. Read more

London boroughs

Self Assessment accountants serving every London borough

We prepare Self Assessment tax returns for individuals and businesses in all 32 London boroughs and the City of London, including Barking and Dagenham, Barnet, Bexley, Brent, Bromley, Camden, Croydon, Ealing, Enfield, Greenwich, Hackney, Hammersmith and Fulham, Haringey, Harrow, Havering, Hillingdon, Hounslow, Islington, Kensington and Chelsea, Kingston upon Thames, Lambeth, Lewisham, Merton, Newham, Redbridge, Richmond upon Thames, Southwark, Sutton, Tower Hamlets, Waltham Forest, Wandsworth, Westminster. Our work is done online, so you get the same fixed fee and service wherever you live in London.

London specialisms: London landlords with buy-to-let income, CIS construction contractors, Uber and delivery drivers, company directors and high earners facing the High Income Child Benefit Charge. For UK-wide help see our main Self Assessment service.

FAQs

Self Assessment in London: your questions answered

Do you offer Self Assessment help in my London borough?

Yes. SATR serves all 32 London boroughs and the City of London. Everything is done online, with phone and WhatsApp support, from our office at 12 London Road, Morden, SM4 5BQ.

How much is a Self Assessment tax return in London?

Our fixed fee starts from £199 + VAT for a standard return and is the same anywhere in London. The fee is confirmed before you pay online.

How much does a Self Assessment tax return cost in London?

Our fixed fee for a standard tax return in London starts at £199 + VAT. Landlords, directors, investors and complex returns have their own fixed fees on our pricing page, and you see the price before you order.

Do I need to meet an accountant in London?

No. Everything is done online or by phone, so you can order, upload documents and approve your return from home. It works the same for clients in Westminster, Camden and Southwark.

When is the Self Assessment deadline for London taxpayers?

The deadline is the same across the UK: 31 January 2027 for online 2025/26 returns, which is also the deadline to pay any tax due. Miss it and HMRC charges an automatic £100 penalty.

Can you help London landlords and company directors?

Yes. We prepare returns for landlords with UK rental income, company directors with salary and dividends, freelancers, CIS subcontractors and high earners. See our full list of services.

I am late with my tax return in London. What should I do?

File as soon as possible: penalties increase the longer you wait. We prepare late and overdue returns and can help with penalty appeals. See late returns.

Who is behind SATR?

SATR (Self Assessment Tax Return) is a trading style of Accotax, a firm of qualified accountants based in London. Visit accotax.co.uk for our wider accounting services.

Get your London tax return filed on time

Fixed fee from £199 + VAT. Pay online, send your details and let our qualified accountants do the rest.