The Enterprise Investment Scheme (EIS) is the bigger sibling of SEIS. It targets UK companies past the SEIS stage, under seven years old (10 for knowledge-intensive companies), fewer than 250 employees, and under £15m of gross assets, and lets each company raise up to £5m of EIS investment per year and £12m in its lifetime.
Individual investors get 30% income-tax relief, capital-gains exemption after three years, capital-gains deferral on other gains rolled into EIS shares, and loss relief on failed investments. Almost every UK angel and a meaningful slice of UK seed funds will only invest if the company is EIS-qualifying, make-or-break for the round.