─── Specialist Micro-Entity Accountants In The UK

CT600 Tax Return Filing in Lincoln – Prepare and File Your Company Tax Return with HMRC

Filing a Company Tax Return is a routine but important part of running a limited company, and CT600 Tax Return Filing in Lincoln is exactly what we help with. The CT600 is the return a company uses to report its Corporation Tax position to HMRC. It brings together the company’s income, allowable deductions, tax adjustments and the resulting Corporation Tax liability, based on the company’s own circumstances. Our service covers preparing the CT600, checking the figures behind it and submitting the Company Tax Return to HMRC, so you have a clear record of what has been filed and why. It is important to understand that the CT600 is not the same as your statutory accounts. Statutory accounts are prepared for the company’s members and filed with Companies House, while the CT600 is a tax filing submitted to HMRC. The two are related — the accounting figures usually form the starting point for the Corporation Tax computation — but they are separate obligations with separate purposes. Working with a professional team helps you keep your Corporation Tax records organised, apply the right tax adjustments, and approach your filing with confidence.

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  
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   Jamie Fletcher 
 
 
 
 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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   Mansur Liman 
 
 
 
 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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   Muna Mohamoud 
 
 
 
 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. Throughout the process, he was incredibly patient, took the time to answer all of my questions, and explained everything clearly. He guided me through each step and helped rectify issues that had built up over time, making what felt like an overwhelming situation much more manageable. I'm very pleased with the service I've received and truly appreciate his support. If you need help with your accounts or taxes, I would highly recommend Imran.
  
 
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   Sergey M 
 
 
 
 Trustindex verifies that the original source of the review is Google. I had a positive experience with Accotax. The work was completed promptly, my tax return was successfully filed, and I received a refund of overpaid tax. I found the cooperation efficient and helpful. Special thanks to Muhammad Saifullah for his assistance.
  
 
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   Ebba Qureshi 
 
 
 
 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 .
  
 
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   Mael Leboucher 
 
 
 
 Trustindex verifies that the original source of the review is Google. We worked with a few different accountants before finally settling with Accotax, and we’re really glad we did. Their team is great. Abdul is responsive and easy to reach whenever I have a question, which makes a big difference. They take the time to understand how our business works and what our needs are. They are very knowledgeable, and when they don’t have the answer straight away, they take the time to look into it and get back to us quickly. Anum, who looks after our account on a day-to-day basis, including reconciling invoices and preparing the annual accounts, is amazing. She is professional, efficient, and follows the processes we have put in place together. She's also very quickin getting back to us whenever needed. We’re very happy to work with her and hope to continue doing so for as long as possible. Overall, Accotax has made our accounting experience much smoother and easier. We see them as a long-term partner as our business continues to grow. I would 100% recommend them.
  
 
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 Trustindex verifies that the original source of the review is Google. Imran provides a very dependable and straightforward accounting service. He is always responsive and professional when managing our accounts. Excellent support.
  
 
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   Martin Tyrrell 
 
 
 
 Trustindex verifies that the original source of the review is Google. I have really impressed to date with all dealings with Accotax highly enough. From day one, they've made what can often be a complicated and stressful part of running a business feel straightforward and hassle-free. A special mention has to go to Anum, who has been friendly, incredibly responsive, and genuinely cares about providing the best possible service. No question is ever too much trouble, and she consistently goes above and beyond to make sure everything is dealt with efficiently. I wouldn't hesitate to recommend you to anyone looking for an accountant they can genuinely trust.
  
 
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   Matthew Lyon 
 
 
 
 Trustindex verifies that the original source of the review is Google. Great speedy service and very personable. Anum dealt with my income certificate and did everything quickly and helped me out massively. Very happy with the service provided.

What a CT600 Means for Micro-Entity Companies in Lincoln

It is worth being clear about the terminology here: there is no separate official “micro-entity CT600” form. CT600 is the name of the Company Tax Return used for companies generally, and a company that operates as a micro-entity — typically a very small company that qualifies to prepare simpler accounts under the micro-entities regime — still uses that same CT600 where it is required to file a Company Tax Return. Not every micro-entity will owe Corporation Tax; whether Corporation Tax is payable depends on the company’s own circumstances and taxable position. What matters is that a micro-entity can still have Corporation Tax obligations, and where HMRC requires a Company Tax Return, the company needs to complete and submit it. That filing is separate from the statutory accounts the company prepares and files with Companies House. The accounts and accounting records often provide the starting point for the Corporation Tax calculation, but the taxable profit used for the CT600 can differ from the accounting profit shown in the accounts, because the Corporation Tax computation may require adjustments — for example, adding back disallowable expenditure or claiming reliefs and allowances that apply to the company. The accounting framework a company adopts does not by itself determine its Corporation Tax liability. It is also important not to confuse the CT600 filing with payment of Corporation Tax: filing the return and paying any tax due are distinct obligations. If you are unsure how this applies to your company, we can review your position and explain it clearly.

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.

Take the Pressure Out of Your CT600 Tax Return Filing in Lincoln

Preparing a Company Tax Return can quickly become complicated. You need accounting figures that tie back to your records, a Corporation Tax computation that turns accounting profit into taxable profit, and a clear trail of the records supporting every figure — all before the CT600 is filed with HMRC. Micro Entity Accounts helps companies in Lincoln and across the UK take that work off their desk. We can prepare the CT600, work through the Corporation Tax computation, review the tax adjustments that may be needed, and submit the Company Tax Return to HMRC on your behalf, keeping your Corporation Tax records organised along the way. If you would like straightforward, clearly explained support with your next filing, get in touch and we will talk through what your company needs.

─── 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 file a Company Tax Return with HMRC. It sets out the company's Corporation Tax position for an accounting period, including income, allowable deductions, any tax adjustments and the resulting Corporation Tax liability based on the company's circumstances. In most cases the CT600 is filed electronically, and it is normally accompanied by a Corporation Tax computation and, depending on the company's situation, a copy of the statutory accounts. It is a tax filing rather than a set of accounts, so it serves a different purpose from the documents a company files at Companies House.

Is a CT600 different from the statutory accounts I file with Companies House?

Yes — they are separate documents with separate purposes and separate recipients. Statutory accounts are prepared for the company's members and filed with Companies House. The CT600 is a Company Tax Return submitted to HMRC to report the company's Corporation Tax position. The two are connected, because the accounting figures in the accounts are usually the starting point for the Corporation Tax computation, but the figures can differ once tax adjustments are applied. Filing your accounts does not automatically mean your Company Tax Return has been filed, and a CT600 filing does not replace the accounts filing.

Who needs to file a CT600?

A company generally needs to file a Company Tax Return when HMRC has issued a notice to deliver one, and companies can also have obligations in other circumstances set out in HMRC guidance. Whether a particular company must file, and for which accounting period, depends on its own position. If you are unsure whether a return is due for your company, it is worth checking the notice or guidance you have received, or asking us to confirm the position before the filing date passes.

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

There is no separate micro-entity version of the CT600 — a company that operates as a micro-entity uses the same Company Tax Return as other companies, and only where it is required to file one. Not every micro-entity will owe Corporation Tax, and whether tax is payable depends on the company's taxable position and circumstances. A micro-entity can still have Corporation Tax obligations, so the accounts and accounting records should be kept in good order so that the figures needed for any required Company Tax Return can be prepared accurately.

What is the difference between a CT600 and a Corporation Tax computation?

The Corporation Tax computation is the working paper that starts with the company's accounting profit and applies the necessary tax adjustments to arrive at the taxable profit and the Corporation Tax liability. The CT600 is the actual return that reports those figures to HMRC. In practice they are prepared together: you work out the numbers in the computation first, then enter the resulting figures onto the CT600 and submit it. Preparing one without the other would leave gaps, which is why the two are usually handled as a single piece of work.

How is taxable profit calculated from accounting profit?

The starting point is normally the accounting profit shown in the company's accounts for the accounting period. From there, the Corporation Tax computation may require adjustments — for example, adding back expenditure that is not allowable for tax purposes, or deducting items that are treated differently for tax, and taking account of any reliefs or allowances that apply to the company. The result is the taxable profit used to calculate the Corporation Tax liability. Because these adjustments depend on the company's own transactions and circumstances, no two computations look exactly the same.

Is filing a CT600 the same as paying Corporation Tax?

No. Filing the CT600 and paying any Corporation Tax due are two separate obligations. Submitting the return tells HMRC what the company's position is for the period; payment is a separate step with its own arrangements and timing. A company can file its return and have nothing to pay, or it may need to make a payment in line with HMRC's guidance. It is worth keeping track of both so that neither catches you out.

What happens if a company files its CT600 late?

HMRC can apply penalties and charge interest where a Company Tax Return is filed late, and the outcome can depend on how late the return is, whether tax remains unpaid and the company's particular circumstances. Because the rules and amounts can change, we would always recommend checking HMRC's current guidance or speaking to us about your own position rather than relying on a general figure. The practical step is to get the return prepared accurately and submitted as soon as possible, with your records organised so the figures can be pulled together quickly.