Patent Box Tax Relief Calculator 2026 | HMRC 10% Corporation Tax Rate | NationRules
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HMRC Patent Box10% Reduced CT Rate15% Tax Savings

HMRC Patent Box Tax Relief Calculator

Calculate tax savings under the HMRC Patent Box scheme, applying a reduced 10% Corporation Tax rate to profits derived from UK & European patented inventions.

Patent Box CT Tax Reduction Calculator

Compute tax savings comparing 25% standard CT vs 10% Patent Box rate

£

Patent Box Tax Savings:

Standard CT (25% Main Rate)
£37500
Patent Box CT (10% Reduced Rate)
£15000
Save £22500 in Tax

Complete Guide to UK Patent Box Incentives

The Patent Box scheme encourages innovation in the UK by lowering Corporation Tax on profits earned from patented products, processes, or licensing income to just 10%.

Patent Box vs Standard Corporation Tax Rate

Tax CategoryStandard Corporation TaxPatent Box Relief Rate
Corporation Tax Rate25% (Main Rate)10% (Reduced Rate)
Eligible ProfitsAll commercial company profitsRelevant IP Profits (RP) from qualifying patents

Frequently Asked Questions

The UK Patent Box scheme allows companies to apply a reduced 10% Corporation Tax rate (instead of the standard 25% rate) to profits earned from patented inventions and qualifying intellectual property (IP).

Patents granted by the UK Intellectual Property Office (IPO), European Patent Office (EPO), or specific EEA countries qualify for Patent Box relief provided the company held rights to the patent and was involved in developing the IP.