─── Specialist Micro-Entity Accountants In The UK

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

CT600 Tax Return Filing is how a UK company reports its Corporation Tax position to HMRC. If your company is based in Gwynedd — from Bangor and Caernarfon to Pwllheli, Bala and the surrounding areas — professional support with CT600 Tax Return Filing means your accounting figures are reviewed, the tax adjustments that affect your taxable profit are considered properly, and your Company Tax Return is prepared and submitted to HMRC accurately and on time. It is important to be clear about what is being filed: the CT600 is a Corporation Tax Return submitted to HMRC, and it is a separate obligation from the statutory accounts a company files with Companies House. The two are related — the accounts usually provide the starting point for the tax figures — but they are not the same document and they do not go to the same place. Working with an experienced preparer gives you accuracy and clarity, takes the technical burden off your desk, and leaves you with a Corporation Tax position you can understand and explain.

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.

      EXCELLENT  
   Based on 302 reviews 
    
 
 
 
   
 
 
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 Trustindex verifies that the original source of the review is Google. Best accountants we've ever had. Umer is ace, and makes everything easy and transparent.
  
 
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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.

Muhammad was professional, responsive and genuinely helpful from start to finish. It was clear that he cared about providing a great service and making sure everything was handled properly. I would definitely recommend him to anyone looking for someone reliable, efficient and professional.
  
 
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 Trustindex verifies that the original source of the review is Google. I worked with Accotx on a HMRC reclaim and overall, they did ultimately deliver on their promise, which I appreciate. The process did take longer than any of us expected, partly due to external delays with the tax authorities, and partly because there were some hiccups in communication and follow-up. However, despite those challenges, they stayed professional and stuck to the original agreed terms. If you’re considering using them, be prepared to stay in regular contact to keep things moving along. They are absolutely capable, have the expertise and willing to work with you, and overall  improving their services over time. I would certainly return for any future needs.
  
 
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 Trustindex verifies that the original source of the review is Google. Sterling work. Many thanks to Muhammad and the team for all their help and expertise
  
 
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 Trustindex verifies that the original source of the review is Google. It was a pleasure working with Anum on our accounts. The whole process was swift and effortless, and it was one less thing to worry about. I'd highly recommend them.
  
 
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 Trustindex verifies that the original source of the review is Google. Accotax have been our accountants for many years now. We maintained them, because of their professionalism. In the last coiple of years, i have working with Imran, who has been very professional and helpful in guiding us through the whole process explaining and clarifying every aspect of it. Very prompt in responding to questions and patient with us even when we seem to be slow. I really enjoy working with him. Thank you
  
 
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 Trustindex verifies that the original source of the review is Google. I highly recommend Imran to anyone looking for a reliable and knowledgeable accountant. He helped me sort out a very complicated backlog of accounts and prepared my overdue tax returns with professionalism and attention to detail.

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 Trustindex verifies that the original source of the review is Google. Fabulous team at ACCOTAX - very efficient and good response time . Honest and professional with their work. I would highly recommend them even if you’re a young start up - or a large business they have it covered .

What Is a Micro-Entity CT600 and Does It Apply to Your Company?

There is no separate official “micro-entity CT600”. A CT600 is simply the Company Tax Return form used to report a company’s Corporation Tax position to HMRC, and it is the same core return whether the company is large, small or a micro-entity. What differs for a micro-entity is usually the accounting side: a company that qualifies as a micro-entity may prepare its statutory accounts under a simplified framework and file smaller, less detailed accounts with Companies House. That accounting framework does not, by itself, determine the company’s Corporation Tax liability. A micro-entity company can still have Corporation Tax obligations, and where HMRC requires a Company Tax Return, the company needs to submit a CT600 reporting its income, deductions and resulting tax position for the accounting period. The statutory accounts and the CT600 are separate filings — accounts go to Companies House, the tax return goes to HMRC — although the figures in the accounts are typically the starting point for the Corporation Tax calculation. From there, the accounting profit may need to be adjusted: items that are not allowable for tax, capital allowances, disallowable expenses and other tax-specific treatments can all mean the taxable profit differs from the profit shown in the accounts. Not every micro-entity will owe Corporation Tax, and whether tax is payable depends on the company’s own circumstances and taxable position. Filing a CT600 and paying any Corporation Tax due are also two distinct obligations — submitting the return does not itself settle the tax. If you are unsure where your company stands, a review of your records and accounts is the sensible first step.

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 Your CT600 Tax Return Filing in Gwynedd

Preparing a Company Tax Return is rarely the part of running a business that anyone looks forward to. The figures have to agree with your records, the tax adjustments have to be worked through, and the Corporation Tax computation has to make sense before anything is submitted to HMRC. Micro Entity Accounts supports companies across Gwynedd with CT600 Tax Return Filing — from preparing the CT600 and building the Corporation Tax computation through to reviewing tax adjustments and submitting the Company Tax Return to HMRC. We keep the process organised and the explanations clear, so you know what has been filed and why the numbers look the way they do. If your year end is approaching, or you simply want your Corporation Tax filing in capable hands, get in touch with Micro Entity Accounts and let’s get your CT600 prepared properly.

─── 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 is a CT600?

A CT600 is the form used to submit a Company Tax Return to HMRC. It reports a company's income, allowable deductions and the resulting Corporation Tax position for a given accounting period. The CT600 is a Corporation Tax document that goes to HMRC — it is not filed with Companies House and it is not the same thing as your statutory accounts, even though the two are closely connected.

Who needs to file a CT600?

A company normally needs to file a Company Tax Return, including a CT600, when HMRC has issued a notice to deliver one, or when the company has Corporation Tax obligations for the period. Because this depends on the individual company's circumstances — its trading activity, its taxable position and any notices it has received from HMRC — it is worth checking your own position rather than assuming a general rule applies. If you have received a notice to deliver a return, that requirement stands regardless of whether tax turns out to be payable.

Is a CT600 the same as the statutory accounts filed with Companies House?

No. They are two separate filings with two different audiences. Statutory accounts are prepared for the company's members and filed with Companies House under the Companies Act requirements. The CT600 is a tax return submitted to HMRC for Corporation Tax purposes. The accounts are usually the starting point for the tax calculation, but the CT600 reports the company's taxable position, which can differ from the accounting figures.

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

It may do. There is no separate micro-entity version of the CT600 — the same Company Tax Return is used — but a micro-entity company can still have Corporation Tax obligations and may still need to submit a return to HMRC if it has received a notice to deliver one. Whether Corporation Tax is actually payable depends on the company's own taxable position. Preparing simplified statutory accounts as a micro-entity does not automatically determine the Corporation Tax outcome; the tax position is worked out separately from the accounts.

Is a CT600 different from a Corporation Tax computation?

Yes, though they work together. The Corporation Tax computation is the working paper that starts with the company's accounting profit and makes the adjustments needed to arrive at taxable profit — for example, adding back expenditure that is not allowable for tax, or accounting for capital allowances and other tax-specific items. The CT600 is the return form on which the resulting figures are reported to HMRC. A well-prepared CT600 is supported by a computation that shows how the numbers were arrived at.

What information is needed to prepare a CT600?

Typically you would need the company's accounting records and finalised accounts for the period, details of income and expenses, information on fixed assets and any capital expenditure, records of any other income or allowable deductions, and confirmation of the accounting period being reported. It also helps to know about anything unusual during the year — asset purchases or disposals, loans involving directors or participators, or income treated differently for tax. The more complete and organised the records, the more straightforward the preparation.

How is taxable profit calculated from accounting profit?

The starting point is usually the profit shown in the accounts. Adjustments are then made to reach taxable profit: expenditure that is not allowable for tax purposes is added back, capital allowances and other reliefs may be deducted, and certain items of income or expense are treated differently for tax than they are in the accounts. Because of this, taxable profit can be higher or lower than accounting profit. The adjustments are set out in the Corporation Tax computation that supports the CT600.

Is filing a CT600 the same as paying Corporation Tax?

No — filing and payment are separate obligations. Submitting the Company Tax Return tells HMRC what the company's position is; it does not itself discharge any Corporation Tax that is due. Likewise, paying any tax due does not remove the need to file the return. Both need to be dealt with, and both depend on the company's own circumstances and accounting period, so it is worth confirming your position with HMRC guidance or a qualified adviser.