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Self-Assessment Tax Return Service
Simple, Straightforward and Stress-Free
We can prepare your tax return, and submit to HMRC on your behalf
Filing your self-assessment tax return doesn’t have to be a nightmare👻
Running a business is already tough enough without the added stress of tax returns. That’s where we come in. We make the process quick, easy, and completely stress-free—without the confusing jargon. As straight-talking, friendly accountants, we explain everything in plain English, help you keep more of your hard-earned money, and ensure your tax return is accurate and submitted on time.
So, instead of worrying about HMRC deadlines, you can focus on running and growing your business with confidence.
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Preparation of Your Tax Return
✅ We'll be taking care of all the calculations, ensuring everything is accurate and optimised for tax savings.
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Electronic Filing to HMRC
✅ No paperwork, no fuss—your tax return is securely submitted on time, every time.
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Tax Savings & Deductions Checked
✅ We don’t just file your return; we actively look for ways to reduce your tax bill legally.
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Friendly, Plain-English Advice
✅ Absolutely no complicated tax talk—just clear, honest guidance tailored to your situation.
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ZERO Surprise Fees
✅ We believe in transparent pricing, so you always know what you’re paying for.
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Dedicated Support
✅ Have questions? Our expert accountants are on hand to offer personalised advice and guidance tailored to your circumstances.
EXCELLENT
Based on 54 reviews
Posted on Google
Nat Jade6 May 2026Always very quick to reply and answer any questions, very friendly, very helpful especially when I had absolutely no idea where to start or what to do, Kimberly asks you to just send over what she requires and she will arrange everything else for you, very quick service, second time I have needed to self cert and so pleased I found Mccarthy Browne, will be back again next year even if it is to tie up this year and not continue with self employment going forward but we shall see, either way I would always use and recommendPosted on Google
Mistress StressMasticDom6 May 2026Kim is an absolute Queen! Very helpful and non-judgmental, professional and still very approachable. I have have and will continue to recommended McCarthy Browne Ltd, and Kimberley McCarthy.Posted on Google
BEAT STREETDANCE5 May 2026Friendly & efficient servicePosted on Google
mike stewart12 April 2026Kim and her team make the time and always happy to help.Posted on Google
Cindi P17 March 2026I contacted Kim in November last year, she has helped me with some untidy accounting in my first year! She is patient, friendly, professional and has helped me enormously with my start up, I was clueless and she has taken so much stress away! Highly recommend!Posted on Google
John Harte7 October 2025Kimberley was fantastic! She managed to sort my accounts quickly even though I was late getting my details over to her. She was always on hand whenever I needed help or had questions. Really professional, efficient, and easy to work with — highly recommend!Posted on Google
Robert Bradbury6 October 2025I want to leave a very simple review, and just say that from now on Kimberley will be doing my account's, The ease at which she has made the whole process and taken away the stress of doing the yearly accounts has been BRILLIANT, so easy to communicate with and very quick responsesPosted on Google
Michelle Carpenter3 October 2025I used McCarthy Browne to complete my self-assessment tax return this year, and I was very happy with the service they provided. As a new sole trader I was unaware of a few processes and Kimberley was extremely helpful regarding my queries, and gave me clarity on multiple stages of the submission. Furthermore, the service provided was very prompt. I would highly recommend using this organisation for all your bookkeeping needs.Posted on Google
alistair bayliss30 September 2025Excellent. Knowledgeable and very helpful. Turnaround was quick and communication was excellent.Posted on Google
Rachel Dean8 September 2025Great company – always on hand to help and they really do offer a personal service. Everything is straightforward, and the support feels genuine and tailored. Highly recommended!Verified by TrustindexTrustindex 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
Who We Help
At McCarthy Browne we work with all kinds of self-employed professionals, including:
• Sole traders
• Freelancers
• Limited company directors
• Landlords with rental income (anyone earning over £30K will soon be mandated to be MTD compliant
• Side business owners
• Contractors and consultants
• Tech and media business owners
• HR and Recruitment consultancies and agencies
• Self-employed creatives (photographers, graphic and website designers, writers, influencers, content creators and social media marketeers etc.)
How It All Works
The McCarthy Browne Self-Assessment Tax Return Process:
Step 1 Initial Consultation
Here we can determine your tax obligations. We will talk about your sources of income.
Step 2 You send us your info.
You share your documents that are relevant. Income and expenses etc.
Step 3 We Work Our Magic
Our expert accountants prepare your tax return, ensuring accuracy and compliance.
Step 4 You Review & We Submit
You approve the final version, and we file it directly with HMRC. Easy!
FAQs About Self-Assessment
When is the deadline for self-assessment tax return?
When you are filing your self-assessment online the deadline is 31 Janaury of the following tax year. If you are filing a paper return the date is 31st October.
What happens if I miss a deadline?
You can receive penalties and fines if you miss the self-assessment deadline. You should get in touch immediately if you are late so we can help you minimize the financial implications.
Can you help me with past tax returns?
Yes we can help you if you have overdue returns or errors that need amending. Just get in touch with us so that we can help.
Let’s get your self-assessment sorted - quickly, easily and stress-free.
Don’t let tax season stress you out. Let us handle your self-assessment while you focus on growing your business (or at least enjoying a coffee or wine without worrying about HMRC).
File Your Self-Assessment Tax Return with Confidence – Contact Us Today!