Managing Your Company’s Tax Obligations
Our Corporation Tax support helps your company meet its tax obligations while making full use of available reliefs and allowances. We prepare calculations and returns, review expenses and manage submission to HMRC.
We also explain your tax position, advise on payment deadlines and identify planning opportunities, giving clear guidance tailored to your business.
CT600 preparation
Your company tax return, reconciled to statutory accounts and ready for review.
Tax computations
Reconciling accounting profit to taxable profit, including standard adjustments and disallowable items.
Tax working papers
Referenced working papers supporting every figure, built for audit trail and sign-off.
Capital allowances
Qualifying expenditure, annual investment allowance, full expensing and writing-down allowance claims.
Loss relief
Trading loss carry-back, carry-forward and group relief options.
Group relief support
Group relief claims and surrenders across connected companies.
Deferred tax
FRS 102 and applicable accounting standard requirements for deferred tax calculations.
R&D tax relief support
Review of qualifying expenditure, claim calculation and supporting documentation.
Marginal relief
Calculations for profits between the small profits rate and main rate thresholds.
Quarterly instalment payments
Forecasting and scheduling for large companies paying by instalments.
HMRC correspondence
Responses, technical analysis and supporting schedules for enquiries.
Tax planning support
Scenario modelling and relief identification for financial decisions.
Why Corporation Tax compliance matters
Late or incorrect filings can lead to HMRC penalties, interest and formal enquiries. Accurate filing protects your standing with HMRC and makes sure you neither overpay nor miss reliefs.
- Avoiding HMRC penalties
- Meeting statutory obligations
- Maintaining business credibility
- Financial transparency
- Effective tax planning
- Cash flow management
- Investor confidence
- Risk reduction
Comprehensive Corporation Tax Support
Our Corporation Tax support helps companies organise the information needed to prepare their CT600 returns and supporting computations. We review accounting periods, identify disallowed expenses and assess capital allowances for qualifying expenditure. Our team also reviews property income, interest, dividends and director loan balances, helping ensure relevant information is considered during preparation. We also gather the trial balance, statutory accounts and supporting schedules, so every figure in the computation can be traced back to the underlying accounting records.
We consider associated companies and available trading losses when preparing tax calculations, supporting appropriate claims and disclosures. We also explain the rates that apply to your profits, so you can see how each adjustment affects the final liability. Before submission, we check supporting accounts, iXBRL tagging and software validation, and obtain the required company approval. We then coordinate filing with HMRC and maintain organised supporting records. Throughout the process, we work closely with your team to resolve queries, clarify responsibilities and support accurate, timely Corporation Tax reporting and compliance.
Alongside return preparation, we help your business understand its tax position and plan for upcoming payment obligations. We review changes in financial performance, capital expenditure and business activities to identify matters requiring further consideration. By keeping calculations, approvals and supporting documentation clearly organised, we provide a reliable reference for future reporting periods and help your team respond efficiently to subsequent queries. This gives you much greater confidence in your reporting and payment planning.
Corporation Tax deadlines
| Requirement | Deadline | Why It Matters |
|---|---|---|
| Corporation Tax registration | Within 3 months of starting to trade | Failure to register can result in penalties |
| Accounting period | Usually your financial year (max 12 months) | The basis for all tax calculations |
| Corporation Tax payment | 9 months and 1 day after period end | Late payment triggers interest |
| CT600 submission | 12 months after period end | Late filing penalties apply immediately |
| Statutory accounts filing | 9 months after year end (private companies) | Companies House penalties apply |
| Confirmation statement | At least every 12 months | Non-filing can lead to strike-off |
| Record retention | At least 6 years from period end | Needed to support figures in an enquiry |
| Quarterly instalments | Large companies, paid in-year | Interest on underpaid instalments |
Frequently Asked Questions
Let’s Discuss Your Requirements
Have a question about our services? Speak with our team to discuss your engagement, deadlines and the support you need.
What Is Corporation Tax?
A tax on the taxable profits of UK limited companies and certain other organisations, reported to HMRC on the CT600 return. The taxable profit is usually worked out by adjusting your accounting profit for items such as disallowable expenses and capital allowances, so accurate records and a clear computation are important.
Who Needs to File a CT600?
Any company that receives a notice from HMRC to file a Company Tax Return must submit one for the specified accounting period, even if no Corporation Tax is due. This applies to dormant or loss-making companies too, so it is important to keep track of your filing obligations and deadlines each year.
What Is Included in your Service?
CT600 preparation and filing, computations, capital allowances, loss relief, group relief, deferred tax, R&D relief support, marginal relief and full working papers. We also review your accounting period, explain how each adjustment affects your liability and keep your supporting records organised for future reference.
Can you Assist with HMRC Enquiries?
Yes, by preparing supporting schedules and technical analysis. Because our working papers trace every figure back to your underlying accounting records, it is easier to respond to HMRC’s questions clearly and within the required timeframe.
Which Software do you Use?
IRIS, CCH, TaxCalc, BTCSoftware, Sage, Xero, QuickBooks, FreeAgent, CaseWare and Excel. This means we can work with the system you already use, and our software also supports iXBRL tagging and validation checks before your return is submitted.
How Secure is my Financial Information?
Encrypted platforms, restricted access controls and confidentiality agreements aligned with UK GDPR. Only the team members working on your account have access, so your company’s financial data remains protected throughout the process.
Do you Provide Tax Planning Support?
Yes, by identifying reliefs, allowances and structuring opportunities. We use scenario modelling to show how decisions such as capital purchases or changes in profit may affect your tax position, and we advise on payment deadlines so you can plan your cash flow in advance.