Corporate Tax Calculator for UK Companies
United Kingdom corporate tax is 25%. See how much you could save.
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How United Kingdom companies reduce their corporate tax
UK corporation tax rose to 25% in April 2023 for companies with profits above £250,000, with small profits relief available for profits between £50,000 and £250,000. For a UK-registered SaaS or consulting company generating £2 million annually, the current tax liability exceeds £500,000 per year. Post-Brexit, UK companies no longer benefit from EU Parent-Subsidiary Directive exemptions but retain a network of bilateral tax treaties covering over 130 countries. The most effective international corridors for UK companies include Ireland's Knowledge Development Box at 6.25% for qualifying software IP income, Cyprus as a treaty-network hub at 12.5%, and Malta for holding and IP structures at 5%. UK CFC rules under TIOPA 2010 require genuine economic activity overseas, and HMRC has clear transfer pricing guidelines. Our free calculator estimates your annual savings based on seven business-specific questions.
Top tax corridors for United Kingdom companies
Ireland KDB (6.25%)
6% effectiveIreland's Knowledge Development Box taxes qualifying IP income at 6.25%. For UK SaaS companies with R&D-derived software products, licensing IP to an Irish subsidiary is a well-established route. Ireland and the UK share a Common Travel Area and extensive bilateral treaty provisions.
Cyprus LTD + UK Treaty (12.5%)
13% effectiveCyprus's 12.5% rate and extensive treaty network make it ideal for UK consulting and services companies. The UK–Cyprus double tax treaty eliminates withholding taxes on interest and royalties. Cyprus also offers a 50% exemption on employment income for high earners relocating to the island.
Malta Holding Structure (5%)
5% effectiveMalta's refundable tax credit system returns 6/7 of tax paid to non-Maltese shareholders, yielding an effective rate of approximately 5%. For UK holding companies and investment structures, Malta offers access to 70+ tax treaties and EU participation exemption benefits.
Savings example: 🇬🇧 United Kingdom → 🇮🇪 Ireland KDB (6.25%)
Annual Revenue
€2.0M
assumed
Tax in United Kingdom
€500K
at 25%
Tax Optimised
€125K
at 6%
Indicative estimate based on statutory rates. Actual savings depend on structure, substance, and individual circumstances.
Frequently asked questions — United Kingdom corporate tax
Can a UK company still use EU holding structures post-Brexit?
Yes. UK companies can still establish holding entities within the EU and benefit from bilateral tax treaties. While the EU Parent-Subsidiary Directive no longer applies to UK parent companies, treaty-based withholding tax reductions remain in force. Cyprus, Ireland, and Malta all maintain active tax treaties with the UK.
What is Ireland's Knowledge Development Box and who qualifies?
Ireland's KDB taxes income derived from qualifying IP assets — including software, patents, and certain copyrighted works — at an effective rate of 6.25%. To qualify, the IP must result from qualifying R&D activities conducted in Ireland. Companies need substance: qualified staff, R&D expenditure, and genuine operational activity.
Does HMRC challenge international restructurings?
HMRC applies the GAAR (General Anti-Abuse Rule) and CFC rules to international arrangements. Structures with genuine economic substance, business purpose beyond tax avoidance, and arm's length pricing are generally respected. Forma Flaga recommends getting advance clearance from HMRC for significant restructurings.
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