Tax Return Preparation UK

Need professional help preparing your Self Assessment Tax Return?

Audit Consulting Group prepares UK Tax Returns for individuals who need to report income and other relevant information to HMRC. We review the information for the relevant tax year, identify points that need clarification, prepare your return and support submission to HMRC within the agreed service.

Standard Tax Return preparation: £200 + VAT

Get Help With Your Tax Return

Tax Return Preparation at a Glance

Is This Tax Return Service Right for You?

This service is designed for individuals who need a Self Assessment Tax Return prepared and want professional support with the preparation and filing process.

It may be suitable if your tax year includes:

• self-employment or freelance income;
• rental or property income;
• employment together with additional income;
• dividends or investment income;
• foreign income that needs to be reported;
• more than one source of taxable income;
• another circumstance requiring a Self Assessment Tax Return.

If HMRC has asked you to submit a Tax Return, you must submit one by the applicable deadline.

If you are unsure whether you need to complete Self Assessment at all, HMRC provides an official eligibility checker.

You may not need professional preparation if you do not have a Self Assessment filing requirement or you are comfortable preparing and submitting the return yourself.

What We Need to Prepare Your Tax Return

The information required depends on what happened during the relevant tax year.

You do not necessarily need every document listed above. We establish what is relevant to your circumstances before the return is prepared.

From Different Income Sources to One Tax Return

A Tax Return is not simply a collection of individual figures. HMRC’s Self Assessment framework requires the relevant information for the tax year to be brought together so that the taxpayer’s overall position can be reported.

This becomes particularly important where employment, self-employment, property, dividends or foreign income overlap.

Expert insight: A return that appears straightforward can become more difficult when information is spread across several sources. One of the most important preparation checks is therefore completeness: establishing that the relevant tax-year information has been identified before the return is finalised.

What’s Included in Tax Return Preparation?

Our standard Tax Return preparation fee is £200 + VAT.

The service covers the normal preparation work required for an individual Self Assessment Tax Return based on the information provided and the agreed scope.

ACG will:

1. establish the relevant tax year and Tax Return requirement;
2. review the information and records provided for the agreed return;
3. identify important missing information or points requiring clarification;
4. prepare the Self Assessment Tax Return;
5. provide the prepared return for review or approval where required;
6. support submission to HMRC where included in the engagement;
7. provide relevant submission confirmation or next-step information where applicable.

When Additional Work May Be Required

The £200 + VAT standard fee does not automatically include every tax or accounting issue connected with your circumstances.

• substantial catch-up bookkeeping;
• historic tax years;
• amendments to returns already submitted;
• complex Capital Gains Tax matters;
• complex foreign income or cross-border matters;
• Self Assessment registration;
• penalty appeals;
• extensive HMRC correspondence;
• specialist tax advice outside preparation of the return.

If additional work is required, the scope and fee should be confirmed before that work proceeds.

Start Your Tax Return

How ACG Prepares Your Tax Return

1. Confirm the Tax Year and Scope

We establish which Tax Return needs to be prepared and identify the relevant circumstances.

2. Provide Your Records

You send the information and supporting records relevant to the tax year.

3. ACG Reviews and Prepares

We review the information, identify preparation-stage questions and prepare the Tax Return.

4. Review and Resolve Queries

Where information is missing or needs clarification, we raise the relevant questions. You review or approve the prepared return where required.

5. Submission and Next Steps

Where submission is included in the agreed service, the return is submitted to HMRC and the relevant confirmation or next-step information is provided.

Who Is Responsible for Each Stage?

ACG’s preparation and submission work should not be confused with HMRC’s subsequent processing or decisions.

Tax Return Deadline

For the 2025/26 tax year, which ran from 6 April 2025 to 5 April 2026:

If HMRC gives you a different deadline in a notice or because of particular circumstances, that deadline may need to be considered separately.

Do not leave document collection until the filing deadline. Missing records or unresolved questions can delay preparation even where the HMRC deadline itself has not yet passed.

If Your Tax Return Is Already Late

An outstanding Tax Return can still need to be prepared and submitted after the normal filing deadline.

The return itself and any HMRC penalty are separate issues.

ACG can help establish what Tax Return remains outstanding and prepare it within the agreed scope. If you have also received a penalty that you believe should be challenged, our Self Assessment Penalties & Appeals service deals with that separate issue.

What Happens After Your Tax Return Is Submitted?

1. The return is received by HMRC.
2. Your Self Assessment position is updated through HMRC’s systems.
3. Any tax due remains your responsibility to pay by the applicable deadline.
4. HMRC may subsequently contact you if it requires further information or reviews an aspect of the return.

Submission by ACG does not mean that every later HMRC enquiry or piece of correspondence is automatically included in the original £200 + VAT preparation fee.

If HMRC raises a separate issue requiring additional work, the scope can be reviewed at that stage.

Checks Before Your Tax Return Is Submitted

• an income source being omitted;
• figures relating to the wrong tax year;
• incomplete self-employment or property records;
• information from different sources not reconciling;
• using incomplete or estimated information without identifying it appropriately;
• overlooking information received after preparation started.

Resolving material discrepancies before submission can reduce the need for corrections later.

Which ACG Tax Service Do You Need?

Can You Prepare Your Own Tax Return?

Yes. Professional support is not mandatory simply because you need to complete Self Assessment.

HMRC allows taxpayers to prepare and submit their own returns.

Professional preparation may be useful where you have several income sources, incomplete records, uncertainty about what needs to be reported or simply want an accountant to prepare the return rather than completing it yourself.

Making Tax Digital for Income Tax

Making Tax Digital for Income Tax is now in operation for the first mandatory group.

From 6 April 2026, qualifying sole traders and landlords with qualifying annual income from self-employment and property of more than £50,000 must use MTD for Income Tax unless an exemption applies.

The threshold expands to more than £30,000 from April 2027 and more than £20,000 from April 2028.

MTD involves ongoing digital record keeping and reporting requirements, so it is not the same service as a one-off Tax Return preparation engagement.

Why Use Audit Consulting Group for Tax Return Preparation?

Tax Return preparation should start with your actual tax-year information rather than a generic checklist.

ACG’s approach is to establish the relevant income sources, review the records supplied, identify material gaps or questions and prepare the return around the agreed scope.

You receive a clear standard fee of £200 + VAT for standard Tax Return preparation, with additional work identified separately rather than being assumed to form part of the basic engagement.

Related Personal Tax Services

• Personal Tax / Self-Assessment
• Personal Tax Filing
• Self-Employed Registration
• Amended Self Assessment Tax Return
• Self Assessment Penalties & Appeals

Tax Return and the SA100 Form

The SA100 is HMRC’s main paper Self Assessment Tax Return form.

This page describes ACG’s professional Tax Return preparation service rather than providing a field-by-field guide to the SA100.

If you need information specifically about the form itself, use ACG’s dedicated SA100 Tax Form resource.

Tax Return Preparation FAQs

How much does Tax Return preparation cost?

Our standard Tax Return preparation service costs £200 + VAT. Additional fees may apply where work outside the standard scope is required. Any additional work should be identified and agreed separately.

What information do I need for my Tax Return?

It depends on your circumstances. Relevant information may include employment documents, self-employment records, property income and expenses, dividend or investment statements, foreign income information and records relating to other items that need to be reported.

Can ACG submit my Tax Return to HMRC?

Yes, where HMRC submission forms part of the agreed service. You remain responsible for providing accurate and complete information and approving the return where required.

Can you prepare a Tax Return with several income sources?

Yes. The preparation process can bring together relevant information from several sources, such as employment, self-employment, property, dividends, investments and foreign income. More complex circumstances may require additional work outside the standard £200 + VAT scope.

Can you help if my Tax Return is late?

Yes. An outstanding return may still need to be prepared and submitted. If there is also an HMRC penalty that needs to be challenged, that is handled as a separate penalty matter.

Do I need to register before filing a Tax Return?

If you are required to complete Self Assessment but are not already registered, registration may need to be dealt with before the return can be submitted. Registration is a separate transaction from preparing the Tax Return itself.

What happens after ACG submits my Tax Return?

HMRC receives and processes the return. Any tax due remains payable by you, and HMRC may subsequently contact you if further information is required.

Can I prepare my Tax Return myself?

Yes. You can prepare and submit your own Self Assessment Tax Return if you prefer. Professional preparation may be useful where your circumstances involve several income sources, incomplete records or questions that need to be resolved before submission.

Official HMRC Resources

• Check if you need to send a Self Assessment Tax Return
• Self Assessment deadlines
• Sending a Self Assessment Tax Return
• Making Tax Digital for Income Tax

Get Your Tax Return Prepared

If you need professional preparation of your UK Self Assessment Tax Return, send ACG the details of your tax year and the income sources that need to be reported.

Standard Tax Return preparation: £200 + VAT

We will establish the relevant information and confirm whether your circumstances fall within the standard service or require additional work.

CTA: Send Us Your Tax Return Details