HM Revenue & Customs
The bigger sibling to SEIS — offers individual investors 30% Income Tax relief on investments in qualifying higher-risk UK small and medium-sized companies, up to £1 million a year (or £2 million for knowledge-intensive companies), plus the ability to defer Capital Gains Tax on other gains by reinvesting them through EIS.
Amount
30% income tax relief on investments up to £1 million/year (£2 million for knowledge-intensive companies), plus CGT deferral relief
Deadline
Rolling / no fixed deadline
This one is usually simple enough to do yourself using the free official link below — but if you'd rather have help, we're building relationships with vetted professionals and can let you know if that becomes available.
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You can also do this yourself for free via the official sourceInvestee company issues an EIS3 compliance certificate; investor claims relief via Self Assessment.
View official sourceLast verified: 1 August 2026. See the footer disclaimer — this is general information, not financial or tax advice.