Self Assessment Tax Returns in Wallington & Croydon
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Self Assessment Personal Tax Returns
Filing a Self Assessment Personal Tax Return can be complicated and time-consuming. Whether you are self-employed, a landlord, a company director, or have additional income to report, submitting an accurate tax return is essential to stay compliant with HM Revenue & Customs (HMRC).
Our professional tax return service ensures your return is completed correctly, submitted on time, and that you claim all the tax reliefs you are entitled to.
What Is a Self Assessment Tax Return?
A Self Assessment tax return is a system used by HM Revenue & Customs to collect Income Tax from individuals whose tax cannot automatically be deducted through PAYE.
You may need to file a Self Assessment tax return if you:
- Are self-employed or a sole trader
- Are a company director
- Earn income from property or rental
- Have foreign income
- Receive dividends or investment income
- Have untaxed income, such as savings interest, capital gains or tips
- Need to claim tax reliefs or allowances
Submitting incorrect information can lead to penalties, interest, or investigations, which is why professional assistance can save both time and money.
Our Self Assessment Services
We provide a complete Self Assessment tax return service, including:
Tax Return Preparation
We collect and review your financial information to prepare an accurate tax return.
Tax Calculation
Our experts calculate exactly how much tax you owe and identify opportunities to reduce your tax liability legally.
Submission to HMRC
Your return is securely filed online with HM Revenue & Customs before the deadline.
Tax Advice
We provide proactive advice to help you plan ahead and minimise future tax bills.
Who We Help
Our Self Assessment services are ideal for:
- Self-employed individuals and freelancers
- Contractors and consultants
- Landlords with rental income
- Company directors
- High-income earners
- Individuals with multiple income sources
No matter how simple or complex your situation, we ensure your tax return is handled professionally and efficiently.
Key self assessment deadlines
- 5 October: register for self assessment if you started a business or have new untaxed income.
- 31 October: deadline for paper tax returns.
- 31 January: file your online return and pay any tax owed. For the 2025/26 tax year, that’s 31 January 2027.
- 31 July: your second payment on account, if HMRC asks you to make them.
Miss the deadline and HMRC charges an automatic £100 penalty, with further penalties and interest the longer it stays late. Behind with your returns? We can bring them up to date and deal with HMRC for you.
Self assessment help in Wallington, Sutton and Croydon
Based in Wallington, we prepare self assessment tax returns for sole traders, landlords, CIS subcontractors and company directors across Wallington, Sutton, Croydon, Carshalton, Mitcham, Epsom, Kingston and the wider South London and Surrey area. As an Accredited Member in Public Practice of the Institute of Financial Accountants (IFA) with over 15 years’ experience, we make sure your return is accurate and you claim every allowable expense.
Get your tax return done right. Call 020 7112 9098 or email info@accountancyntax.co.uk.
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FAQ's
Frequently asked questions
To register for self assessment, ensure you've completed the process by the 5th of October following the tax year's end for which you need to submit a tax return.
You must complete a tax return if you fall into any of these categories:
A sole trader or partner
A company director
A trustee
An individual receiving untaxed income
An individual receiving foreign income
A landlord
An individual earning income from savings or investments
Privacy is a key advantage. While a limited company's published accounts are open for inspection, a sole trader's financial information remains private. This ensures competitors have limited access to information about your company's performance.
Most likely. The tax return involves a self-employment supplement, which necessitates your trading figures and a taxable profit. For all but the simplest businesses, this typically involves us preparing a set of accounts comprising a Profit and Loss Account and Balance Sheet.
Online tax returns, and any tax owed, are due by 31 January after the end of the tax year. For the 2025/26 tax year (6 April 2025 to 5 April 2026), that is 31 January 2027. Paper returns are due by 31 October.
HMRC charges an automatic £100 penalty if your return is up to 3 months late. After that, daily penalties, further fixed penalties and interest on unpaid tax can apply. We can help bring late returns up to date and appeal penalties where you have a reasonable excuse.
Common allowable expenses include stock and materials, fuel and vehicle costs, phone, insurance, tools and equipment, accountancy fees and a share of household costs if you work from home. We check exactly what applies to you.