- 46 Victoria Road, Burgess Hill, RH15 9LR
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Another great addition from Oval Accountants to provide accurate and comprehensive Corporation Tax calculations, brought to you by your friendly accountants in Burgess Hill. Everything you would expect from a professional firm.
Corporation Tax is a tax on the profits made by UK companies, foreign companies with UK branches or offices, and other organisations including clubs, societies, associations and cooperatives. Our calculator helps you determine your exact tax liability and plan your finances effectively.
| Tax Year | Small Profits Rate | Main Rate | Marginal Rate |
|---|---|---|---|
| 2024/25 | 19% (up to £50,000) | 25% (over £250,000) | 26.5% (£50,000–£250,000) |
| 2025/26 | 19% (up to £50,000) | 25% (over £250,000) | 26.5% (£50,000–£250,000) |
| 2026/27 | 19% (up to £50,000) | 25% (over £250,000) | 26.5% (£50,000–£250,000) |
The UK introduced a new tiered corporation tax system with three rates. Small companies with profits up to £50,000 continue to benefit from the 19% rate, while larger companies face the 25% main rate. The marginal rate applies to profits between £50,000 and £250,000.
Understanding your corporation tax liability helps with:
Company with £150,000 profit:
Corporation Tax Return (CT600):
Corporation Tax Payment:
Large companies (profits over £1.5m) must pay corporation tax in quarterly instalments. The first payment is due 6 months and 13 days after the start of the accounting period.
You can deduct:
You cannot deduct: capital expenditure (use capital allowances instead), personal expenses, entertaining clients, fines and penalties, political donations, or expenses not incurred wholly for business purposes.
Maximise your tax efficiency:
At Oval Accountants LTD, we specialise in corporation tax compliance and planning. Our experienced team helps businesses minimise their tax liability while ensuring full compliance with HMRC requirements — handling everything from CT600 preparation to strategic tax planning.
Get expert CT adviceCalculate your company's corporation tax liability with precision and confidence
Trading Profits: enter your adjusted trading profit after allowable business expenses.
Investment Income: include dividends, interest and rental income.
Capital Allowances: Annual Investment Allowance and other qualifying allowances.
Losses: previous-year losses that can offset current profits.
Corporation tax penalties can be severe — from £100 for late filing to 100% of the tax due for deliberate errors. Our professional service ensures compliance and peace of mind.
Members of AAT and IAB, certified Xero advisors and payroll partners for small-business cloud bookkeeping.
Our qualified accountants can help you calculate your exact corporation tax liability, prepare your CT600, plan to minimise tax and handle all HMRC correspondence.
