Rated Excellent on Trustpilot - Accounting Wise

Self Assessment Tax Return Service

Your Return Handled – Accurately, On Time, Every Year

Whether you’re self-employed, a landlord, a company director, or have income from dividends or capital gains, we take care of your entire Self Assessment Tax Return. We prepare it, maximise every relief you’re entitled to, and file it with HMRC on your behalf. You just approve it.

From £6.25 per month – or a one-off fee with no contract.

Build Your Own Package Accounting Packages One Off Pricing
Self Assessment Tax Return Hero Image

Qualified Accountants
HMRC dealt with – not you

Unlimited Tax Return Advice
Full Compliance, Zero Stress

Real-Time Bookkeeping
Reminders – never a January panic

We handle Self Assessment for everyone – sole traders, landlords, directors, and anyone with income outside of PAYE

Request Call Back

Included in Every Accounting Package – No Hidden Fees

Your Self Assessment Tax Return is fully covered from day one. No add-ons, no surprises at filing time – just a qualified accountant who prepares, checks, and files your return every year as standard.

We don’t just file the numbers you give us. We review your full picture – expenses, reliefs, pension contributions, capital gains – and make sure you’re only paying what you actually owe. Most new clients find they were leaving money on the table.

Self Assessment Tax Returns are included in our accounting packages

Common Self Assessment situations we handle

Self-Employed & Sole Traders

We calculate your taxable profits, identify every allowable business expense, and file your SA103 accurately. Whether you’re a freelancer, contractor, or run a trade, we make sure you’re only paying what you genuinely owe – and not a penny more.

Landlords & Property Rentals

Rental income must be declared on your Self Assessment return each year. We handle property income, mortgage interest relief, letting agent fees, allowable maintenance costs, and wear & tear for furnished lettings – making sure you’re not caught out by the Section 24 changes either.

Company
Directors

If you take a salary and dividends from your limited company, you almost certainly need a personal Self Assessment return. We manage your personal and company tax position together, so nothing falls through the gap between the two.

Investors & Shareholders

Dividends above the annual allowance, capital gains from selling property or shares, and investment income all need to be declared. We make sure everything is reported correctly and every available relief -including Business Asset Disposal Relief – is applied where you qualify.

High Earners (>£100,000)

Once your income exceeds £100,000, your Personal Allowance begins to taper and additional reporting obligations kick in. We handle the complexity, identify legitimate planning opportunities, and make sure your return accurately reflects your position.

Multiple Income Sources

Employment, freelance work, rental income, dividends, and foreign income all on a single return – we bring it together accurately, making sure nothing is missed, double-counted, or incorrectly classified.

Get started with the right accountant for your Self Assessment Tax Return

Build Your Own Package Accounting Packages One Off Pricing

Trusted Self Assessment Tax Returns, with hundreds of 5 Star reviews from our clients.

0330 113 8442 Request Call Back
Follow a manual added link

5.0 Rating

Follow a manual added link

5.0 Rating

Follow a manual added link

5.0 Rating

Benefits of using us for your Self Assessment Tax Return

Why Choose Accounting Wise for Your Self Assessment?

  • Most new clients pay less tax
    We regularly find overlooked expenses and reliefs. If you’ve been self-filing or using a less thorough accountant, there’s a good chance you’ve been overpaying.
  • Qualified accountants, not just software
    Your return is prepared and reviewed by a real ACCA, AAT, or ICAEW accountant – not auto-generated by an app with someone rubber-stamping the output.
  • You never deal with HMRC
    As your authorised agent, we handle all HMRC contact directly. Queries, letters, investigations – you just forward them to us.
  • Lower risk of investigation
    Returns prepared by a qualified accountant are less likely to trigger an HMRC enquiry. We know what raises red flags and how to avoid them.

Start your Self Assessment the easy way – choose your plan and let us handle the rest.

Build Your Own Package Accounting Packages One Off Pricing

Accredited Self Assessment Tax Returns

You can feel safe in the knowledge that we offer expert Self Assessment Tax Returns.

Our accredited accountants have a range of qualifications from the Association of Accounting Technicians (AAT), Association of Chartered Certified Accountants (ACCA) and the Institute of Chartered Accountants in England and Wales (ICAEW). We are also an Institute of Certified Practising Accountants (ICPA) accredited firm.

ACCA Accredited Logo
ICPA Accredited Logo
ATT Accredited Logo

Switch to us for your Self Assessment Returns it’s simple.

1 Choose Your Package

Choose from our pre-built packages or customise your own to see exactly what services you need and how much you’ll pay each month. We make it easy to find the perfect fit for your business!

2 Sign up with Us

After selecting your preferred level of service, simply provide a few additional details to register with us through our easy sign-up form or by giving us a call. It’s that simple to get started!

3 You’re ready to go

That is it, we will begin to set your services up for you, contact your previous accountant if required, and begin the authorisation process with the HMRC

Build Your Own Package Accounting Packages One Off Pricing
Switch to us for your accounting needs

Essential FAQs for Self Assessment Tax Returns

0330 113 8442 Request Call Back

Anyone with income not taxed at source must usually file — including sole traders, landlords, company directors, and those with dividends, capital gains, or overseas income.

The online filing deadline is 31 January following the end of the tax year. For example, the 2023/24 tax return must be submitted by 31 January 2025.

HMRC charges a £100 late filing penalty right away, plus additional fines and interest the longer you delay.

Yes, but unless your tax situation is simple, using a qualified accountant helps you avoid errors, claim more reliefs, and reduce the risk of HMRC investigations.

Read more in our Self Assessment Guide for Freelancers

You’ll need your UTR (Unique Taxpayer Reference), National Insurance number, income records, expense details, and any capital gains or dividend statements.

Learn more about what documents you need for Self Assessment in our resource hub.

Often, yes. We regularly identify unclaimed expenses or reliefs that reduce your tax bill – especially for new clients.

If you’ve never filed before, you must register with HMRC by 5 October following the end of the tax year in which you earned untaxed income.

Report all untaxed income, including freelance work, rental income, dividends, interest, and any capital gains.

Yes – allowable expenses include travel, office costs, subscriptions, and home-working expenses, if you’re eligible.

31st January is the deadline to both file your Self Assessment tax return and pay any tax you owe for the previous tax year. Missing this deadline can result in automatic penalties from HMRC, plus interest on late payments. January 31st is one of the most critical dates in the tax calendar for self-employed individuals and company directors.

Stay Informed: Self Assessment News & Updates

Stay Connected with Accounting Wise: Your go-to source for the latest updates in UK self assessment accounting, UK business finance news, regulatory changes, and practical resources tailored to help limited companies stay compliant and financially healthy.

Accounting Wise - what is a balancing payment

What is a Balancing Payment?

Understanding a balancing payment is essential for anyone completing a Self Assessment in the UK. This post explains what a balancing payment is, who needs to make one, and how it is calculated. Learn how it interacts with payments on account, common mistakes to avoid, and practical tips for managing your tax liability effectively.
Accounting Wise - Self Assessment Guide for Landlords UK

Self Assessment Guide for Landlords UK

If you earn income from rental property, HMRC usually expects a Self Assessment tax return. This practical UK landlord guide explains what to declare, what you can claim, key deadlines, common mistakes to avoid, and how upcoming tax changes may affect you.
Accounting Wise - guide to Self Assessment for side hustles in the UK

Guide to Self Assessment for Side Hustles in the UK

Running a side hustle in the UK? This practical guide explains when you need to file a Self Assessment tax return, how the £1,000 trading allowance works, what expenses you can claim, key deadlines, and the mistakes that catch people out. Clear, up to date, and written for real side hustlers juggling tax with a full-time job.
Online Company Formation Experts - Formations Wise
Right Right Company Formation

Company Formation

Free company formation with our Pre-Built or Bespoke Accounting packages!

All Official Documents

Manage Your Company Online

London Registered Office Address

Your own limited company

Accounting Software

Whatever your size, our accounting software supports your business.

Quotes & Payment Reminders

MTD VAT & CIS Returns

Payroll Services & HR Support

Unlimited Support & Advice

Balance Accounting Software - The Balance App
Right Right Accounting Software
Rated Excellent on Trust Pilot - Accounting Wise Logo

Get started with the right accounting solution for your business

Build Your Own PackageAccounting PackagesOne Off Pricing

Contact Us

Interested in Accounting Wise?

Request Call Back0330 113 8442

Accounting Wise is a trading style of Accounting Wise Ltd, a limited company registered in England under company number 09365202. Our registered office is: The Carriages, Station Road, Ware, SG12 9PL UK.

Content is for general information only. Always take advice.