Corporation Tax
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Corporation Tax
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- Accountancy
- Corporation Tax
Corporation Tax Compliance for UK Businesses
Corporation tax compliance is detailed, deadline-driven work, and most UK businesses don’t have an in-house tax specialist to handle it. As your external finance team, we take this off your plate entirely—preparing and reviewing CT600 returns, calculating tax liabilities, computing capital allowances, and handling adjustments for disallowable expenses, all in line with current HMRC rules and Making Tax Digital requirements.
Our Services
Our Corporation Tax Support for UK Businesses
E-Tech Consultancy & Services provides end-to-end corporation tax filing services for UK Businesses and Companies, covering every stage of the compliance cycle.
CT600 Preparation
Complete preparation of the company tax return, fully reconciled to statutory accounts, and ready for review.
Corporation Tax Computations
Detailed computations reconciling accounting profit to taxable profit, including all standard adjustments and disallowable items.
Tax Working Papers
Clear, well-referenced working papers supporting every figure in the computation, built for audit trail and partner sign-off.
Capital Allowances Calculations
Analysis of qualifying expenditure, annual investment allowance, full expensing, and writing-down allowance claims.
Loss Relief Calculations
Identification and application of trading loss carryback, carryforward, and group relief options to minimise tax liabilities.
Group Relief Support
Preparation of group relief claims and surrenders across connected companies within corporate groups.
Deferred Tax Calculations
FRS 102 and FRS 105-compliant deferred tax asset and liability calculations for inclusion in statutory accounts.
R&D Tax Relief Support
Qualifying expenditure review, claim calculation, and supporting documentation for research & development tax relief claims.
Marginal Relief Calculations
Accurate marginal relief calculations for companies falling between the small profits rate and main rate thresholds.
Quarterly Instalment Payments
Forecasting and scheduling support for large companies required to pay corporation tax via quarterly instalments.
Tax Provision Calculations
Current and deferred tax provisions calculated for management accounts and year-end statutory reporting.
HMRC Correspondence Assistance
Prepare responses, technical analysis, and supporting schedules for HMRC enquiries and reviews.
Tax Adjustments
Precise treatment of disallowable expenses, capital versus revenue items, and other technical adjustments.
Corporation Tax Planning Support
Scenario modelling and relief identification to support smarter financial decisions for your business.
Year-End Tax Compliance
Full year-end Corporation Tax compliance cycle, aligned with statutory accounts and Companies House deadlines.
Trusted Corporation Tax Support & CT600 Filings for UK Businesses
Corporation Tax support means bringing in a specialist external team to prepare and file your CT600 return, along with tax computations and supporting working papers, rather than handling it all yourself. For UK businesses, this means access to a dedicated, qualified tax team without the overheads of recruiting, training and retaining permanent staff.
E-Tech Consultancy & Services was built to solve exactly this problem. We provide Corporation Tax support that works as an extension of your business — handling the technical heavy lifting from preparing and filing your CT600 return to capital allowances, loss relief and deferred tax, so you don’t have to.
Our clients include sole traders, small limited companies, partnerships, and growing businesses across the UK. Whether you need occasional extra support around your corporation tax filing deadline, or ongoing help managing your tax obligations year-round, our support is structured to flex with your workload.
The Bigger Picture
Why Corporation Tax Compliance is Important
Filing your CT600 late or getting your tax computations wrong can lead to automatic HMRC penalties and interest charges, and even trigger a formal inquiry into your business. Beyond the financial risk, accurate corporation tax filing protects your company’s standing with HMRC and ensures you’re not overpaying—or underclaiming reliefs and allowances you’re entitled to. Staying compliant isn’t optional; it’s a legal requirement for every UK limited company, regardless of size or turnover.
- Avoiding HMRC Penalties
- Meeting Statutory Obligations
- Maintaining Business Credibility
- Financial Transparency
- Effective Tax Planning
- Cash Flow Management
- Regulatory Compliance
- Investor Confidence
- Risk Reduction
- Long-Term Business Sustainability
Timeline
Corporation Tax Deadlines
| Requirement | Deadline | Importance |
|---|---|---|
| Corporation Tax Registration | Within 3 months of starting to trade | Failure to register can result in HMRC penalties |
| Accounting Period | Usually matches the financial year (max 12 months) | Defines the basis for all tax calculations |
| Corporation Tax Payment | 9 months and 1 day after accounting period end | Late payment triggers interest charges |
| CT600 Submission | 12 months after accounting period end | Late filing penalty applies immediately after deadline |
| Statutory Accounts Filing | 9 months after the company's year end (private companies) | Companies House penalties apply for late filing |
| Confirmation Statement | At least once every 12 months | Non-filing can lead to company being struck off |
| HMRC Record Retention | Minimum 6 years from accounting period end | Required to support figures in the event of an HMRC enquiry |
| Quarterly Instalment Payments | Applicable to large/very large companies, paid in-year | Non-compliance results in interest on underpaid instalments |