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Self Assessment Tax Returns

Stress-Free Self Assessment Tax Returns

Whether you’re employed, self-employed, a landlord, part of a partnership, or have income from dividends or capital gains, we’ll handle your Self Assessment Tax Return accurately and on time.

Let Accounting Wise deal with HMRC on your behalf, so you can relax knowing you’re claiming every tax relief you’re entitled to — without the stress.

Everything you need from £6.25 per month

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Expert Self Assessment Support
HMRC Submissions Handled

Unlimited Tax Return Advice
Full Compliance, Zero Stress

Real-Time Bookkeeping
Reminders – never miss a deadline

From sole traders to company directors, we support individuals and businesses across the UK with reliable, HMRC-compliant Self Assessment services

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Self Assessment Tax Returns Made Simple – Included in Every Accounting Package

Accounting Wise packages include full support for your Self Assessment Tax Return – no hidden fees, no surprises.

Filing your own return can feel overwhelming, especially with HMRC’s strict penalties for errors or late submissions. Let our expert accountants handle it all for you — accurately and on time.

We don’t just file your return – we help you maximise tax reliefs, reduce capital gains liabilities, and even plan ahead for inheritance tax.

Self Assessment Tax Returns are included in our accounting packages

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

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We currently support over 2,000 individuals and businesses in the UK

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What is Self Assessment?

Self Assessment is the system HMRC uses to collect Income Tax from individuals and businesses with income not automatically taxed.

If you’re self-employed, a landlord, a company director, or earn additional income from savings, investments, or dividends, you’ll likely need to complete a Self Assessment Tax Return.

The deadline to file your return and pay any tax owed is 31 January each year. Missing this deadline can lead to automatic penalties and interest charges — even if you owe nothing.

By staying organised and submitting your return early, you’ll avoid last-minute stress and gain extra time to plan for your tax payment.

Find out what a Self Assessment Tax Return is and why it matters for your finances.

Benefits of using us for your Self Assessment Tax Returns

Self Assessment can be complex – and getting it wrong can be costly. Unless your tax affairs are extremely simple, it’s almost always worth seeking expert advice. Here’s how we help:

  • Peace of mind
    Know your return is accurate, complete, and HMRC-compliant — handled by qualified professionals.
  • Reduced risk of investigation
    Using an accountant lowers the chance of triggering an HMRC enquiry. We know what HMRC looks for — and how to avoid red flags.
  • Time saved
    Completing your return yourself can be time-consuming. Let us do the heavy lifting so you can focus on running your business.
  • Maximise your claims
    We often find overlooked expenses and reliefs. Most clients pay less tax with our help — simply because they weren’t claiming everything they were entitled to.

Read our article: 10 Tips for Submitting Your Self Assessment Tax Return

What is self assessment?
Benefits of using us for your Self Assessment Tax Return

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

Essential FAQs for Self-Assessment Tax Returns

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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.

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

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.

Our Accredited Accountants

You can feel safe in the knowledge that we are experts in our field.

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, and a HMRC registered Agent.

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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

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

All official documents provided

Online Hub to manage your company

London Registered office Address

Your own incorporated limited company

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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.