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by Undo Capital
December 15, 2025
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What Is SITR (Social Investment Tax Relief)?

SITR (Social Investment Tax Relief) is a UK tax incentive that encourages investment into social enterprises by offering investors income tax and capital gains benefits.

SITR (Social Investment Tax Relief) Meaning

The SITR meaning centres on supporting charities and community-focused organisations that deliver social impact. To define SITR in practice, eligible social enterprises can raise investment, and in return, investors receive income tax relief, capital gains deferral and potential loss relief. Unlike SEIS/EIS, SITR applies specifically to mission-driven organisations with asset locks and strict use-of-funds requirements. A clear SITR definition helps investors understand how the scheme blends financial return with social purpose. SITR stands for unlocking capital for organisations that generate measurable, positive societal outcomes.

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Disclaimer: Our services are designed to assist startups and businesses with company formation, legal agreements, and funding-related documentation. We do not provide investment advice, financial advice, or tax advice, nor are we regulated by the Financial Conduct Authority (FCA). Participating in startups and early-stage enterprises carries inherent risks, including limited liquidity, absence of dividends, potential loss of investment, and dilution. Any decisions regarding investments should be made independently by the investor as part of a well-diversified portfolio.