19%
Small Profits Rate
Applies to companies with taxable profits under £50,000, subject to the relevant rules.
CT600 and Company Tax Return Support
Corporation Tax Accountants Birmingham
Corporation Tax return preparation, CT600 filing, tax computations and compliance support for limited companies.
CT600 Returns
Tax Computations
HMRC Filing
Tax Planning
Corporation Tax Made Clear
Prepare, calculate and file your Company Tax Return
We help limited companies prepare accurate Corporation Tax returns and submit them to HMRC using commercial software.
01
Review Your Records
We review your bookkeeping records, accounts, income, expenses and supporting documents.
02
Prepare Your CT600
Your Corporation Tax return, tax computation and supporting figures are prepared and checked.
03
Submit to HMRC
Once approved, your Company Tax Return is submitted to HMRC using commercial filing software.
CT600 Tax Returns
Preparation and submission of Company Tax Returns, including CT600 forms, accounts and tax computations.
Corporation Tax Calculations
Clear calculations based on company profits, allowable expenses, reliefs and current Corporation Tax rates.
HMRC Filing Support
Company Tax Returns filed using commercial software, following the closure of HMRC’s old online filing service.
Tax Planning Advice
Practical advice to help companies plan ahead, manage liabilities and use available allowances and reliefs.
Corporation Tax Returns for Limited Companies
Corporation Tax is paid by companies on taxable profits. A Company Tax Return usually includes a CT600 form, company accounts and a tax computation showing how the tax has been calculated.
Gondal Accountancy helps limited companies prepare accurate Corporation Tax returns, review allowable expenses and reliefs, and file returns with HMRC correctly.
Speak to a Corporation Tax AccountantCurrent Corporation Tax Rates
The Corporation Tax rate depends on company profits. Associated companies and shorter accounting periods can affect the thresholds, so calculations should be reviewed carefully.
Marginal Relief
Profits Between £50,000 and £250,000
Companies in this range may pay the main rate reduced by Marginal Relief.
25%
Main Rate
Applies to companies with taxable profits over £250,000, subject to the relevant rules.
What Is a Corporation Tax Return?
A Corporation Tax return reports your company’s taxable profits or losses to HMRC. It uses your accounts, expenses, allowances and tax adjustments to calculate the Corporation Tax due.
The payment deadline is usually earlier than the filing deadline, so companies should not wait until the CT600 filing date before calculating the tax due.
A Corporation Tax return usually involves:
- ✓ Company accounts
- ✓ CT600 Company Tax Return
- ✓ Corporation Tax computation
- ✓ Review of allowable expenses and reliefs
- ✓ Submission to HMRC using commercial software
Our Corporation Tax Services
We support limited companies with Corporation Tax compliance, calculations, filing and practical planning advice.
CT600 Tax Returns
Preparation and submission of Company Tax Returns, including CT600 forms, accounts and tax computations.
Corporation Tax Calculations
Clear calculations based on company profits, allowable expenses, reliefs and current Corporation Tax rates.
HMRC Filing Support
Company Tax Returns filed using commercial software, following the closure of HMRC’s old online filing service.
Tax Planning Advice
Practical advice to help companies plan ahead, manage liabilities and use available allowances and reliefs.
Who Can Benefit from Corporation Tax Support?
Corporation Tax can become more complex when profits increase, reliefs are available, records need improving or the company has associated companies.
We help company directors understand their filing responsibilities and keep their tax position organised.
Corporation Tax support may be useful for:
- ✓ Limited companies preparing annual accounts and CT600 returns
- ✓ Company directors needing Corporation Tax compliance support
- ✓ Small companies wanting to understand the 19% and 25% Corporation Tax rates
- ✓ Companies with profits between £50,000 and £250,000 that may need Marginal Relief calculations
- ✓ Businesses claiming allowable expenses, capital allowances or other reliefs
- ✓ Companies needing HMRC filing support after the closure of the old HMRC online service
Our Corporation Tax Return Process
We keep the CT600 process clear, organised and focused on accurate HMRC compliance.
01
Review Your Records
We review your bookkeeping records, accounts, income, expenses and supporting documents.
02
Prepare Your CT600
Your Corporation Tax return, tax computation and supporting figures are prepared and checked.
03
Submit to HMRC
Once approved, your Company Tax Return is submitted to HMRC using commercial filing software.
Need Corporation Tax Advice?
Speak to our Birmingham Corporation Tax accountants about CT600 returns, tax computations, filing deadlines and HMRC compliance.
Book a ConsultationCorporation Tax FAQs
A Corporation Tax return, usually called a Company Tax Return or CT600, reports a company’s taxable profits, Corporation Tax calculation, tax reliefs and other relevant information to HMRC.
A Company Tax Return is usually due 12 months after the end of the accounting period it covers.
For companies with taxable profits up to £1.5 million, Corporation Tax is usually due 9 months and 1 day after the end of the accounting period. Larger companies may need to pay by instalments.
For the 2026 Corporation Tax year, the small profits rate is 19% for profits under £50,000, the main rate is 25% for profits over £250,000, and Marginal Relief may apply between those limits.
Yes. We can prepare your accounts, tax computation and CT600 return, then submit the Company Tax Return to HMRC using commercial software after your approval.
A company may still need to file a Company Tax Return if HMRC has issued a notice to deliver one, even where there is no tax to pay. Dormant company rules should be checked separately.
Other Specialist Tax Services
Specialist tax support for individuals, businesses, landlords, investors and creative professionals.
Looking for a Chartered Tax Adviser in Birmingham?
Speak to Gondal Accountancy for specialist tax advice, tax planning and accountancy support.