Tax
Corporation Tax accountants in London
Corporation Tax returns prepared and filed accurately, with every relief claimed.
Corporation tax
What is Corporation Tax?
Corporation Tax is paid by UK limited companies, foreign companies with a UK branch or office, and some clubs and associations, on their taxable profits from trading, investments and chargeable gains. Every company must register for Corporation Tax within 3 months of starting to do business.
Corporation Tax rates and deadlines
- 19% small profits rate on profits up to £50,000.
- 25% main rate on profits over £250,000, with marginal relief in between. These limits are shared between associated companies.
- Tax payment due 9 months and 1 day after the end of your accounting period (large companies pay in quarterly instalments).
- Company Tax Return (CT600) due 12 months after the end of the accounting period.
A late CT600 brings an automatic £100 penalty, another £100 after three months and tax-geared penalties after six and twelve months.
Who needs corporation tax services
Who needs Corporation Tax support?
Any company with profits, or a notice to file from HMRC, must file a Company Tax Return, even if no tax is due.
Private limited companies
Accurate CT600 returns for owner-managed and family companies.
Groups and associated companies
The £50,000 and £250,000 limits shared correctly, with group relief where available.
Non-resident companies trading in the UK
Meeting UK Corporation Tax obligations for overseas companies.
Start-ups and growing businesses
Registration within 3 months of trading and planning for future tax bills.
What’s included
What our Corporation Tax service includes
Corporation Tax computation
Your taxable profit calculated from the accounts, with disallowable items adjusted and reliefs applied.
CT600 filing with HMRC
Your Company Tax Return and iXBRL accounts filed online before the 12-month deadline.
Capital allowances and reliefs
Annual Investment Allowance, full expensing, R&D relief and other reliefs claimed where they apply.
Tax planning and payment reminders
Advance estimates of your tax bill and clear reminders of the 9-month payment deadline.
HMRC enquiries and amendments
Corrections to previous returns and support if HMRC opens an enquiry into your company’s tax.
How it works
What happens, step by step
- 1
You send us the company’s accounts and records
If we prepare your accounts, we already have them.
- 2
We calculate the tax
A tax computation with the allowances and reliefs that apply.
- 3
A director approves the return
We send it to you and explain the figures.
- 4
We file the Company Tax Return
The CT600 goes to HMRC, and we tell you what to pay and when.
What we need from you
- Company Unique Taxpayer Reference (UTR)
- Year-end accounts or bookkeeping records
- Details of assets bought or sold
- Details of directors’ loans
- Any R&D or other relief claims
- Last year’s tax return and computation
Services
Related services
Income tax – self assessments
Preparation and submission of personal income tax returns.
Capital gains tax
Advice and preparation for capital gains tax.
Tax consultancy
Strategic tax planning and optimisation.
FAQ
Corporation Tax: frequently asked questions
What is the current Corporation Tax rate?
Companies with profits up to £50,000 pay the small profits rate of 19%. Profits over £250,000 are taxed at the main rate of 25%, and companies in between pay the main rate reduced by marginal relief. The limits are divided between associated companies.
When is Corporation Tax due?
For most companies, Corporation Tax must be paid 9 months and 1 day after the end of the accounting period. The Company Tax Return (CT600) is due 12 months after the end of the period. Large companies pay in quarterly instalments.
Do I need to file a CT600 if my company made a loss?
Yes. If HMRC has sent a notice to file, you must submit a Company Tax Return even if there is no tax to pay. Filing on time also lets you claim and carry forward trading losses.
What are the penalties for a late Corporation Tax return?
There is a £100 penalty if the return is one day late and another £100 after three months. After six months HMRC estimates the tax and adds a 10% penalty on unpaid tax, with a further 10% after twelve months. Interest is charged on late payments.
How can my company reduce its Corporation Tax?
By claiming every allowable expense and relief, such as capital allowances, R&D relief and employer pension contributions, and by planning the timing of major spending. We review your position before the year end to find savings.
Licenses & certificates
