Company Tax Returns
Expert Support for Your Company’s Tax Obligations
From computing corporation tax to filing the company tax returns with HMRC, we handle everything so that you do not have to worry about the paperwork. We provide accurate tax returns for businesses, meet filing deadlines, and sort out your tax matters. This includes preparing the CT600 form, supporting company accounts and tax computations in the format required by HMRC. Talk to us today.

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Who We Serve for Company Tax Returns
We offer support for UK limited companies at all stages of business, from startups to established businesses. Our accountants prepare correct company tax returns, calculate Corporation Tax and help your business comply with its HMRC filing obligations. The appropriate capital allowances and trading losses are taken into account as applicable for the particular firm.
Limited Companies
We prepare and file Company Tax Returns for UK limited companies. Your figures will correctly reflect business income, allowable expenses and profits subject to tax. Our team deals with Corporation Tax calculations and helps you keep track of your tax affairs during the year. We also prepare the CT600 and supporting tax computations, with company accounts and computations submitted in iXBRL format where required.
Start-Ups & Newly Incorporated Companies
New business comes with new tax obligations. We help your business cope with these tax obligations by helping it prepare its first tax return and organising the financial statements needed for correct filing. We can also advise you whether your company is required to file because of its trading status. We also help establish the relevant Corporation Tax accounting period and identify when the company must notify HMRC that it has started trading.
Growing & Established Businesses
Your finances may become more complicated as your business evolves. We help you prepare business tax returns taking into account income, expenses and profits of your business. This way, you can assess your tax situation. In addition, we discuss capital allowances and other tax reliefs and losses that can be claimed to decrease taxable profits.
Companies with Multiple Income Streams
Where your company generates income from various sources through investments or business activity, we assist in consolidating the relevant financial information for your tax return. We go through your records, compute the taxable profit and prepare the tax returns of companies that generate income from diverse sources. We also account for relevant tax adjustments needed to reconcile accounting profit with taxable profit for the CT600.
Dormant Companies & Companies Not Yet Trading
Your company may be inactive or not yet commenced its business activity. In such situations, you still have tax return obligations to consider. We assist you in meeting your obligations and dealing with the HMRC requirements in case of Company Tax Returns. If HMRC has informed you that your company is dormant for Corporation Tax, we assist you in understanding the next course of action. If HMRC has issued a notice to deliver a Company Tax Return, the company must normally file it unless HMRC withdraws the notice. A company recognised by HMRC as dormant for Corporation Tax generally does not need to file returns for subsequent periods unless HMRC asks it to or its circumstances change.
What Reflex Accounting Can Do for Your Company Tax Returns
Save yourself from having to do any work on your corporation tax. We make sure that your company complies with HMRC regulations on taxation, handles its Corporation Tax and keeps its finances organised.
Accurate Tax Calculations & Filing
Our firm prepares your Company Tax Return based on your company’s accounts, reviewing its revenues, expenses and taxable profits prior to submission to HMRC. With our assistance, you can have no difficulty with filling in your company’s tax returns and meeting all the required tax filing obligations. We also check whether supplementary pages are required for specific claims or transactions. Company Tax Returns are generally filed online using commercial software, with accounts and tax computations submitted in iXBRL format where required.
Corporation Tax Compliance
The rules for Corporation Tax can be complicated. In particular, this applies when your company evolves or changes its financial situation. With us, you can receive a calculation of your Corporation Tax liability, an explanation of relevant tax rules and assistance with timely tax payment and filing obligations. We make it easier for you to manage your tax record-keeping and tax filing responsibilities to HMRC. This can include reviewing capital allowances, trading losses, group relief and other relevant tax adjustments where applicable.
Tax Planning & Allowable Expenses
Good tax planning starts long before the year-end comes around. We review your company’s financial situation, look at all tax reliefs available and check eligible expenses for tax deductions. We also consider capital expenditure, capital allowances and qualifying losses where these can affect your Corporation Tax liability.
Support for Complex Company Finances
Certain business structures and sources of income may require extra tax reporting. We assist our clients in organising their finances and preparing tax returns for companies that have more complicated financial situations. Regardless of whether you are expanding your business or have multiple income sources, we ensure your tax reporting is precise and organised. Where relevant, this may include supplementary pages such as CT600A for certain loans and arrangements involving participants in close companies.
Filing Deadlines and Ongoing Support
Not paying on time can result in HMRC penalties. We assist our clients in keeping track of their deadlines for Company Tax Returns and Corporation Tax payments, preparing the necessary information, and filing their tax return on time. We also inform you of the documentation you require for filing your tax returns. A Company Tax Return is normally due 12 months after the end of its accounting period. Corporation Tax is usually payable nine months and one day after the end of the accounting period, although different payment rules can apply to some companies.
Your Specialist Company Tax Return Accountants
There is a need for detailed computations, accurate accounting records and knowledge of HMRC regulations to file taxes for a business. At Reflex Accounting, we have Chartered Certified Accountants who prepare Company Tax Returns and compute Corporation Tax. We convert complicated tax rules into practical tips on how to comply with your tax liabilities. Our support also covers CT600 preparation, relevant tax computations and the supporting accounts required for filing.
Request a quote or ask for advice
We work with a wide range of businesses on a national level and can give you the friendly and expert accounting advice you need.
Common Company Tax Return Challenges Businesses Face
Worried about paying too much Corporation Tax?
If you miss any eligible expenses or tax relief that is available, it can cost your business more money when it comes to Corporation Tax. We review your accounting records and look into allowable expenses and reliefs for you. We also consider eligible capital allowances and trading losses to help ensure you claim the reliefs available to your company.
Struggling to keep financial records organised?
If you have incomplete records and transactions that are not reconciled yet, Company Tax Returns may become complicated. We can organise your accounts and review financial data so that you can have all the numbers ready for tax filing. We also review the adjustments between accounting profit and taxable profit and prepare the supporting tax computations for your CT600.
Confused about Corporation Tax rules?
Understanding what kind of taxable profit, allowable expenses and tax reliefs your business qualifies for can take effort. Our team helps you get acquainted with all the relevant legislation that has an effect on your corporate tax return. We can also help you understand relevant capital allowances, loss relief and supplementary filing requirements, including CT600A where applicable.
Need reliable advice throughout the year?
There may be some tax questions which need clarification at other times of the year besides the end-of-year accounting. Our accountants can help you understand how your corporation must deal with tax obligations.
Worried about missing HMRC deadlines?
Failure to file a Company Tax Return or pay Corporation Tax on time can result in fines and interest charges. We can help you keep track of important deadlines and provide you with all the required documentation for filing. We help you distinguish between the CT600 filing deadline and the Corporation Tax payment deadline so you can plan for both.