
Corporation Tax in Brighton
Corporation Tax services from Brywel Associates help companies across Brighton, Hove, Shoreham-by-Sea, and the surrounding areas prepare accurate figures, meet separate payment and filing dates, and plan ahead.

Bring Your Company Year-End Into Focus
Brywel Associates supports limited companies throughout East and West Sussex with Corporation Tax calculations, returns, and connected accounting responsibilities. Our work covers accounts preparation, tax calculation, approval, payment planning, and filing.
Our accountants also provide bookkeeping, payroll, personal tax, VAT returns, and accounting support. Coordinating these services connects everyday transactions and employee costs with the company’s year-end position.
We review the records and organise the work around the accounting period. Directors receive clear figures, the Corporation Tax due, and the relevant dates.
HMRC does not issue a Corporation Tax bill. The company must calculate its liability, pay it, and report the position through the appropriate return.
Build Tax Calculations From Accurate Business Accounts
Business accounts provide the starting point for the calculation, but the profit shown in the accounts can differ from taxable profit for Corporation Tax. Costs added back, allowances, reliefs, or chargeable gains may alter the calculation.
Our work can include:
- reviewing income and expenditure
- checking the treatment of business costs
- considering capital expenditure and relevant allowances
- identifying investment income or chargeable gains
- calculating taxable profit
- preparing the Corporation Tax computation
- confirming the amount and payment reference
- submitting the approved Company Tax Return
Accurate records support adjustments and make the calculation easier to explain. Our team identifies missing information and agrees how to complete the business accounts.
Supporting records may include bank statements, sales and purchase information, payroll figures, loan details, asset purchases, and evidence for allowances or reliefs claimed.


Prepare Year-End Accounts and Company Tax Returns
Private limited companies normally prepare year-end accounts for Companies House and a Company Tax Return for HMRC. The documents are connected but serve different purposes and have separate filing requirements.
The Company Tax Return calculates Corporation Tax from taxable profit rather than copying the accounting result. A company receiving a notice to deliver must still file when it makes a loss or owes no Corporation Tax.
We coordinate year-end accounts, calculations, and company tax returns, then provide the completed documents for approval before submission.
Apply the Correct Corporation Tax Rate
The Corporation Tax rate depends on the company’s profit level and circumstances. The current standard bands are:
- 19% Small Profits Rate for profits of £50,000 or less
- Marginal Relief for profits between £50,000 and £250,000
- 25% Main Rate for profits above £250,000
Marginal Relief alters the effective rate within the middle band. The calculation uses augmented profits, which can include certain distributions from unrelated companies. HMRC provides a calculator, but the result depends on accurate inputs.
The limits are proportionately reduced for a short accounting period and according to the number of associated companies. We establish the relevant position before calculating the liability.


Coordinate Payment and Filing Deadlines
Each company works to its own accounting period, and its payment and filing deadlines are separate.
For most companies, Corporation Tax is payable nine months and one day after the accounting period ends. The Company Tax Return is normally due 12 months after the end of the accounting period it covers. Private companies usually file annual accounts with Companies House within nine months of their financial year-end, while first accounts follow different rules.
Companies meeting the large-company rules may need to pay Corporation Tax by instalments on an earlier schedule, which we confirm separately.
We schedule accounts preparation, approval, payment, and filing. Companies across Brighton, Hove, Shoreham-by-Sea, and the surrounding areas can see which action comes next and prepare funds before the payment deadline.
Use Tax Planning Before the Period Ends
Tax planning supports informed decisions before the period ends. Equipment purchases, director remuneration, pension contributions, investment, and structural changes can each have accounting and tax consequences.
We review the company’s position, explain available options, consider eligible allowances or reliefs, and indicate the expected liability.
Current bookkeeping and management information allow tax planning to reflect recent performance rather than incomplete estimates.

FAQs – Corporation Tax
Corporation Tax can apply to trading profits, investment income, and chargeable gains from selling assets. Tax adjustments, allowances, and reliefs can make taxable profit differ from the figure in the company accounts.
Brywel Associates’ accountants review supporting records, prepare the tax computation, and explain how the final liability has been calculated.
The rate depends on taxable profit, augmented profits, the accounting period, and the number of associated companies. The Small Profits Rate is 19%, the Main Rate is 25%, and Marginal Relief may apply between the relevant limits.
Our accountants establish which rate or calculation applies and include it within your Company Tax Return.
Most companies must pay Corporation Tax nine months and one day after the end of their accounting period. Companies covered by the large-company rules may need to make earlier instalment payments.
We confirm the applicable payment date, calculate the expected liability, and provide the payment reference needed to pay HMRC.
A Company Tax Return is normally due 12 months after the end of the accounting period it covers. The usual Corporation Tax payment deadline arrives earlier, so you shouldn’t wait until the filing date to pay.
Our team schedules the calculation, approval, payment, and submission as separate stages to keep each responsibility organised.
Annual accounts report the company’s financial activity and position and are usually filed with Companies House. A Company Tax Return is submitted to HMRC and includes the calculation of taxable profit and Corporation Tax.
Brywel Associates prepares the connected documents, applies the necessary tax adjustments, and coordinates their separate filing requirements.
A dormant company does not usually have Corporation Tax to pay, but HMRC should be told when the company becomes dormant. If HMRC has issued a notice to deliver a Company Tax Return, the company must respond unless HMRC confirms that filing is unnecessary. Brywel Associates can review the position and prepare any required return.
Talk to Our Accountants About Corporation Tax
Brywel Associates provides Corporation Tax support to companies across Brighton, Hove, Shoreham-by-Sea, and the surrounding areas. Our service connects business accounts, year-end accounts, company tax returns, deadline scheduling, and practical tax planning through one experienced team.
Call 01273 705836 or use our online contact form to arrange a free consultation and discuss your company’s Corporation Tax requirements.