Self Assessments
Simple, Stress-Free Self Assessment Support.
Tax returns aren’t most people’s favourite job, but they’re ours. Whether you’re a sole trader, contractor, landlord, company director, or have multiple income streams, we’ll handle your self assessment from start to finish. Everything is filed accurately, on time, and with your best interests in mind.
Who needs to file a Self Assessment?
You’ll need to complete a Self Assessment tax return if you:
Are self-employed or a sole trader earning over £1,000.
Are a director of a limited company (and receive dividends).
Have rental property income.
Receive dividends or investment income.
Earn from freelance work or “side hustles”.
Have income from abroad.
Need to confirm your capital gains from selling property, shares, or assets after the initial declaration has been completed.
If you’re unsure, we can help you check whether you need to file — it’s always better to ask than risk a penalty.
What’s included in our Self Assessment service?
Personal tax return preparation & filing – we’ll gather your income and expense information, complete your return, and file it with HMRC.
Maximising allowances and reliefs – from personal allowances to expenses, pension contributions, and other deductions, we’ll make sure you don’t pay more tax than necessary.
Rental and property income support – full compliance for landlords, including mortgage interest rules and allowable expenses.
Dividend and investment income – making sure it’s reported correctly and tax-efficiently.
Payments on account advice – so you know what to expect, and can budget with no nasty surprises.
Deadline management – reminders and submissions to ensure you avoid penalties.
Capital Gains reporting – where needed, we’ll take care of 60-day property returns and annual CGT reporting.
Why use Astonian Accountancy for your Self Assessment?
No January panic – we encourage early filing, so you get peace of mind and more time to plan for payments.
Fixed fees – clear, upfront pricing with no hidden extras.
Friendly support – no jargon, just straight-talking advice that makes sense.
Digital efficiency – we can work with Xero, QuickBooks, or even a simple spreadsheet if that’s what you prefer.
Help with Making Tax Digital for Income Tax – if you earn above certain thresholds in the next three years, we can help you report quarterly.
Common pitfalls we help you avoid
Missing deadlines (and getting hit with HMRC penalties).
Claiming the wrong expenses or missing out on tax reliefs.
Misreporting income from multiple sources.
Struggling with HMRC’s online portal or software requirements.
Unsure on your sole trader and/or landlord income which may push you into Making Tax Digital thresholds.
With us, you’ll know everything is done correctly — and you’ll have someone in your corner if HMRC has questions.
Key dates to remember
5th October
Register for Self Assessment if it’s your first time
31st January
Online filing deadline and tax payments due (tax balance plus first payment on account if applicable)
31st July
Second payment on account (if applicable)
Ready to take the stress out of tax returns?
We offer fixed-fee self assessment packages, giving you clear pricing, no surprises, and full peace of mind from start to finish. You’ll always know exactly what’s included and when everything will be taken care of.
Get in touch today to book your free consultation and let us handle the rest.