─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Clevedon: Prepare and Submit Your Company Tax Return to HMRC

If your limited company needs to report its Corporation Tax position to HMRC, CT600 Tax Return Filing is the process that gets it done. The CT600 is the Company Tax Return — a formal submission to HMRC that sets out the company’s income, allowable deductions and the resulting Corporation Tax position for an accounting period. It is not the same thing as the statutory accounts you file with Companies House, even though the two are closely linked: your accounts provide the starting point, and the Corporation Tax computation adjusts those figures to arrive at taxable profit. Professional CT600 Tax Return Filing in Clevedon takes the guesswork out of that process. Your accounting records are reviewed, the necessary tax adjustments are considered, the computation is prepared and the CT600 is submitted to HMRC accurately and on time. Whether your company is small, micro, dormant or trading actively, the emphasis stays on clarity, accuracy and convenience — so you know what has been filed, why the figures look as they do, and what happens next.

CT600 TAX RETURN FILING

(Turnover up to £100K)

£499.00

+vat

CT600 Return Preparation
Corporation Tax Computation
Tax Adjustment Review
Allowable Expenses Review
HMRC CT600 Filing
Filing Deadline Support

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Trusted by Micro-Entity Businesses Across the UK

From newly incorporated companies to established owner-managed businesses, our clients trust us to prepare their accounts accurately and handle their annual filing requirements.

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 Trustindex verifies that the original source of the review is Google. I had a really positive experience with Muhammad. He was incredibly quick to action everything and made the whole process straightforward and stress-free. He took care of everything promptly and kept me informed throughout, which was greatly appreciated.

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What Is a CT600 and How Does It Apply to Micro-Entity Companies?

There is no separate official ‘micro-entity CT600’ form — a micro-entity company that has Corporation Tax obligations uses the same Company Tax Return, the CT600, as any other limited company. Where a micro-entity company is required to file a Company Tax Return, it submits that CT600 to HMRC and reports its Corporation Tax position for the accounting period. The CT600 is a distinct filing from the statutory accounts a company sends to Companies House, and distinct from the Confirmation Statement and any VAT Returns. That said, the two do connect: the accounts and accounting records a micro-entity prepares typically form the starting point for the Corporation Tax calculation, and the figures used for tax purposes may need adjustments. This is why taxable profit can differ from accounting profit. Items that are treated one way in the accounts — such as certain expenses, depreciation, or income that is treated differently for tax — may need to be added back, adjusted or relieved in the Corporation Tax computation before the taxable profit and any resulting Corporation Tax liability are determined. Filing the CT600 and paying Corporation Tax are also separate obligations: submitting the return does not itself make a payment, and a company’s circumstances and taxable position determine whether any Corporation Tax is actually payable. Where a company is a micro-entity, its simpler accounting framework can make preparing the numbers more straightforward, but that framework does not by itself determine the Corporation Tax outcome — the tax computation does.

What a Complete CT600 Submission Includes

The CT600 Form

Company details, accounting period, turnover, profit and the tax calculation.

Tax Computations

A working showing how accounting profit is adjusted into taxable profit.

iXBRL Accounts

Your statutory micro-entity accounts, machine-tagged to HMRC's taxonomy.

Supporting Schedules

Capital allowances, losses, directors' loans and any claims or reliefs.

─── OUR CT600 SERVICE

What's Included in Our CT600 Preparation Service?

Our fixed-fee service covers everything a qualifying micro-entity company needs to complete and file its Corporation Tax Return correctly and on time.

CT600 Return Preparation

Preparation of your Company Tax Return (CT600) from your bookkeeping records, ready for HMRC submission.

Corporation Tax Computations

Full tax computations showing how your taxable profit and Corporation Tax liability have been calculated.

Accounts & Tax Computation Support

Micro-entity accounts tagged in iXBRL format and attached to your CT600 as HMRC requires.

Allowances & Reliefs Review

We check capital allowances, allowable expenses and available reliefs so nothing is claimed twice or missed.

HMRC Filing & Deadline Tracking

Online submission to HMRC plus reminders for your payment and filing deadlines.

─── How It Works

How Our CT600 Tax Return Filing Service Works

Share Your Company Records

Provide the accounting records and relevant company information required to prepare the return.

Review Your Accounting Figures

Review the financial information and identify relevant Corporation Tax adjustments.

Prepare the CT600

Prepare the Company Tax Return and supporting tax computation based on the company's circumstances.

Prepare the CT600

Prepare the Company Tax Return and supporting tax computation based on the company's circumstances.

Review & Approve

You review the information and confirm the return before submission.

File With HMRC

Submit the Company Tax Return through the appropriate HMRC filing process.

─── WHY CHOOSE US

Why Choose Our CT600 Tax Return Filing Service?

We keep Corporation Tax simple, transparent and predictable for busy company directors, with fixed fees agreed before any work begins.

Micro-Entity Expertise

We work exclusively with small limited companies filing under FRS 105, so the CT600 is routine work for us.

Accurate Accounts Preparation

Every adjustment, disallowed expense and capital allowance claim is documented and explained in plain English.

Tax & Filing Support

Missed a deadline? We prepare overdue CT600 returns quickly to limit penalties and interest building up.

Clear Fixed-Fee Pricing

One transparent fee covers preparation, iXBRL tagging and HMRC submission of your Corporation Tax Return.

───WHO WE HELP

CT600 Support for Micro-Entities Across the UK

We support qualifying micro-entity companies across London and the UK, from one-director businesses to consultants and online companies.

One-Director Companies

Straightforward CT600 preparation for owner-managed limited companies with simple salary and dividend structures.

Limited Companies Run by Freelancers & Contractors

Corporation Tax returns for contractors trading through qualifying micro-entity limited companies.

Startups & Small Companies

First-year and dormant-to-trading CT600 filings for newly incorporated and growing micro companies.

CT600 Deadlines and Late Filing Penalties

Corporation Tax has two separate deadlines, and HMRC charges penalties that increase the longer a return stays outstanding.

How late the CT600 is	HMRC penalty
1 day late	£100
3 months late	A further £100
6 months late	HMRC estimates your tax bill and adds 10% of the unpaid tax
12 months late	A further 10% of any unpaid tax

Penalty levels are set by Companies House and may change. Separate HMRC penalties and interest apply to a late Corporation Tax return and unpaid tax. Check the updated guide here.

Let Us Handle the CT600 Tax Return Filing So You Can Get Back to Business

Preparing a Company Tax Return can quickly become a tangle of accounting figures, add-backs, capital allowances and disclosure boxes — and if something is missed, it is rarely obvious until later. That is the frustration: the CT600 has to reflect your company’s real Corporation Tax position, and the tax adjustments that sit behind it need careful thought. Micro Entity Accounts can take that burden off your desk. We help with CT600 preparation, Corporation Tax computations, review of tax adjustments between accounting profit and taxable profit, and submission of the Company Tax Return to HMRC, all supported by clear, transparent pricing and a straightforward process from start to finish. If you would like your CT600 Tax Return Filing handled properly and explained in plain English, get in touch with Micro Entity Accounts today and we will talk you through the next steps.

─── FAQs

Micro-Entity CT600 FAQs

Still unsure where you stand? Reach out to our UK team at info@microentityaccounts.co.uk and we will review your filing history with you.

What exactly is a CT600?

A CT600 is the form used to submit a Company Tax Return to HMRC. It reports a company's income and deductible expenses for an accounting period and sets out the resulting Corporation Tax position, including the tax calculation and any supporting information HMRC requires. It is a Corporation Tax filing, not a Companies House filing, and it is often referred to simply as the Company Tax Return or Corporation Tax Return.

Is a CT600 different from statutory accounts?

Yes — they are two separate filings with two separate recipients. Statutory accounts are prepared under an applicable accounting framework and filed at Companies House, where they become part of the public record. The CT600 is submitted to HMRC to report the company's Corporation Tax position. The accounts usually provide the starting figures, but the CT600 must reflect Corporation Tax rules, which can mean adjusting the accounting figures before taxable profit is arrived at.

Is a CT600 the same as a Corporation Tax computation?

No, although they work together. The Corporation Tax computation is the calculation that starts with accounting profit, applies the relevant tax adjustments — such as disallowable expenses, capital allowances or differently treated income — and arrives at taxable profit and the Corporation Tax liability. The CT600 is the return in which those results are reported to HMRC. Preparing the computation properly is what makes the figures on the CT600 supportable.

Does a micro-entity company need to file a CT600?

It may do, depending on the company's circumstances. Operating as a micro-entity affects how the accounts are prepared, but it does not create a separate tax return form, and it does not automatically mean there is no filing requirement. A micro-entity limited company that is within the Corporation Tax system will generally need to consider filing a Company Tax Return with HMRC where HMRC requires one. If you are unsure whether your company needs to file, it is worth checking your specific position before assuming no action is needed.

What information is needed to prepare a CT600?

Typically we need the company's accounting records for the accounting period, the prepared accounts or trial balance, details of income and expenses, information on fixed asset purchases and disposals, any relevant loan or interest details, and details of payments already made towards Corporation Tax. We also need the company's registration details and the accounting period dates. If records are incomplete, we can discuss what is missing and how best to fill the gaps before the return is prepared.

How is taxable profit calculated from accounting profit?

The starting point is normally the accounting profit shown in the accounts. From there, the Corporation Tax computation applies adjustments required by tax rules. Some expenses allowed in the accounts may not be deductible for tax and are added back; capital allowances may replace depreciation; and some income may be treated differently for tax purposes. The result is the taxable profit, on which any Corporation Tax liability is based. Because of these adjustments, taxable profit and accounting profit frequently differ.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing the CT600 is the act of reporting your company's Corporation Tax position to HMRC. Payment of any Corporation Tax due is a separate obligation, and the amount payable is determined by the tax calculation rather than by the fact of filing alone. A company may have no Corporation Tax to pay in a given period and still have a filing requirement, so the two should always be treated as distinct.

Can someone else prepare and file the CT600 on the company's behalf?

Yes. A company can appoint an accountant or tax agent to prepare the Corporation Tax computation and submit the Company Tax Return to HMRC on its behalf. That often suits directors who want the calculation checked, the tax adjustments reviewed and the filing handled without having to work through the form themselves. The company remains responsible for the accuracy of what is submitted, which is why working with someone who explains the figures is worthwhile.

What happens if a company files its CT600 late?

Late filing can lead to consequences under HMRC's rules, which may include penalties and interest, and repeated or prolonged delays can escalate matters. The exact position depends on the circumstances and on the rules in force for that period. Rather than rely on assumptions, the practical approach is to check the deadline that applies to your accounting period and, if a deadline is at risk, speak to us about getting the return prepared and submitted as soon as possible.