Self-assessment Tax Return Service – BC&A Chartered Accountants

Overview

Expert Tax Return Services for Individuals with Complex Financial Affairs

Our self-assessment tax return services are tailored for individuals with more complex tax situations – whether you receive income from multiple sources or are subject to higher rate tax.

From PAYE and self-employment to rental income, pensions, and investments, we ensure your tax return is completed accurately, in a timely manner, and in a way that optimizes your tax position. We take the hassle out of HMRC compliance while ensuring that all available allowances, reliefs, and deductions are claimed.

Who We Support

Self-employed professionals & sole traders
Company directors with salary & dividend income
Higher & additional rate taxpayers
Landlords with UK rental income
Individuals with investment portfolios or capital gains
Those drawing from private pensions or SIPPs
Non-UK residents & non-domiciled individuals
Trustees & personal representatives
Business partners & LLP members
First-time filers requiring registration & submission

More Than Just Filing A Return

A self assessment return is not simply a compliance exercise. Completed correctly, it is an opportunity to ensure every available allowance, relief and deduction is applied to your specific circumstances, reducing your liability and keeping your tax position as efficient as possible.

BC&A reviews your full financial picture before preparing your return, not just the documents you provide.

HMRC Scrutiny Is Increasing — Get It Right First Time

HMRC has significantly increased compliance activity on self assessment returns, particularly those involving rental income, capital gains, overseas assets and high earners.

Errors even innocent ones can trigger enquiries, penalties and interest. BC&A prepares every return with accuracy and defensibility in mind. Where a Tax Enquiry Fee Protection policy is in place, our professional fees in responding to any HMRC enquiry are fully covered.

Self Assessment Tax Return FAQs

Do I need to complete a self assessment tax return?

You are required to file if you are self-employed, a company director, a landlord, or if you have untaxed income from investments, pensions or overseas sources. You must also file if your total income exceeds £100,000 or if you have capital gains above the annual exempt amount. If you are unsure whether you have a filing obligation, contact BC&A and we will confirm your position.

What are the deadlines for filing and paying?

Paper returns must be filed by 31 October following the end of the tax year. Online returns must be filed by 31 January, which is also the deadline for paying any tax due. A second payment on account may be due by 31 July. Missing these deadlines triggers automatic penalties starting at £100, increasing significantly the longer the return remains outstanding.

What happens if I have made an error on a previous return?

Errors on past returns can be corrected and in some cases may result in a repayment of overpaid tax. HMRC generally allows amendments within 12 months of the filing deadline. Where errors relate to underpaid tax, making a voluntary disclosure proactively — rather than waiting for HMRC to identify the issue — typically results in significantly reduced penalties.

What information do I need to provide to BC&A to complete my return?

We will provide you with a straightforward checklist covering all relevant income sources, expenses, pension contributions, gift aid payments and any disposals of assets during the year. Our role is to make the process as simple as possible for you — you provide the information, we handle everything else.

Why choose BC&A for Self-assessment Tax Return Service

We do more than keep your books in order. Our approach is proactive — we review your numbers regularly, flag opportunities and ensure you are always ahead of deadlines.

Always ahead of deadlines

We prepare and submit all accounts and filings well ahead of every deadline — you will never face a penalty with BC&A.

Real-time visibility

Cloud accounting means your numbers are always current — giving you the clarity to make faster, better business decisions.

Fixed fees — no surprises

We agree fees upfront before any work begins. No hourly billing, no unexpected invoices — just clear, transparent pricing.

Self Assessment Tax Returns Handled Accurately