Business Tax

UK Corporation Tax 19% Small Profits vs 25% Main Rate

Corporation tax rates, £50,000 Small Profits Rate, marginal relief calculation, and company director compliance.

Key Statutory Thresholds & Rules (2025/2026)

HMRC Compliance & Tax Planning Checklist

  • Verified against GOV.UK Statutory Tax Guidance and HMRC Finance Act updates.
  • Applies to UK tax year: 6 April 2025 – 5 April 2026.
  • Self-Assessment deadlines: 31 October (Paper) / 31 January (Online).