Social Investment Tax Relief (SITR): Tax Breaks for Social Enterprise Investment 2026

Social enterprises, charities, and community interest companies (CICs) often struggle to attract private capital. Their social purpose can make them less commercially attractive than pure profit-seeking businesses, and traditional bank lending may be unavailable or expensive. Social Investment Tax Relief (SITR) is the UK government's answer: a package of Income Tax relief, CGT deferral, and Loss Relief designed to make investment in qualifying social organisations significantly more tax-efficient.

This guide explains how SITR works in 2026/27, who can invest, which organisations qualify, what the reliefs are worth, and the practical steps to making a claim.

What Is Social Investment Tax Relief?

SITR was introduced in 2014 to replicate for social enterprises some of the tax advantages that EIS provides for commercial startups. The scheme allows individual investors to invest in qualifying social organisations either through equity (shares) or debt (loans) and receive a 30% Income Tax credit on the amount invested.

Unlike EIS, which is equity-only, SITR can be accessed via debt investments — a significant structural difference that suits many social enterprises and charities that cannot or do not want to issue shares.

SITR Income Tax Relief

The Relief Rate and Annual Limit

SITR Income Tax relief rate: 30%

Investors can claim 30% of the amount invested against their Income Tax liability in the tax year of investment. The maximum qualifying investment per investor per tax year is £1 million, giving a maximum annual Income Tax reduction of £300,000.

Like EIS, the relief can be carried back to the prior tax year — useful if you want to apply the relief against a previous year's larger tax bill.

How the Relief Is Claimed

You claim SITR relief via your Self Assessment tax return. The social enterprise must have obtained HMRC advance assurance and, after the investment is made, must issue you with a SITR compliance certificate (analogous to the EIS3 certificate). This certificate confirms that the investment qualifies and enables you to make the claim.

Conditions for Retaining the Relief

To keep the 30% Income Tax relief, you must hold the investment for at least three years from the date of investment. If you dispose of the investment within three years:

• The Income Tax relief is withdrawn (clawed back by HMRC).
• Any CGT exemption on the gain is also lost.

There are exceptions for circumstances outside the investor's control, such as the organisation going into insolvency, but voluntary early disposal triggers full clawback.

CGT Deferral Under SITR

How CGT Deferral Works

SITR allows investors to defer Capital Gains Tax on gains arising from the disposal of any asset by reinvesting the gain into a qualifying SITR investment. The deferred gain can be from:

• The sale of a property
• The disposal of shares (whether EIS, non-EIS, or otherwise)
• The sale of a business
• Any other chargeable disposal

The reinvestment window is one year before or three years after the disposal that gave rise to the gain. The deferred gain is held over and becomes chargeable when the SITR investment is itself disposed of. At that point, the gain crystallises and is taxed at the CGT rates applicable in the year of disposal.

CGT Deferral Example

An investor sells a rental property in 2025/26 and realises a gain of £50,000. Without relief, this would attract CGT at 24% (higher rate) = £12,000 of CGT due. The investor reinvests £50,000 into a qualifying SITR organisation.

• CGT deferred: £12,000
• Income Tax relief at 30%: £15,000 (a further benefit on the same investment)

The investor has deferred £12,000 of CGT and received £15,000 of Income Tax relief from a single £50,000 investment.

Loss Relief Under SITR

If the social enterprise fails and the investor receives nothing on disposal of the shares or loans, Loss Relief applies. The loss calculation works as follows:

1. Take the amount invested.
2. Subtract the Income Tax relief already received.
3. The resulting net loss can be set against Income Tax (in the current or prior tax year) or Capital Gains Tax.

For a 40% Income Tax payer who invested £10,000, received £3,000 Income Tax relief, and lost everything:

• Net loss: £10,000 - £3,000 = £7,000
• Income Tax Loss Relief at 40%: £2,800
• Total tax saved from all reliefs: £3,000 + £2,800 = £5,800
• Effective net loss: £10,000 - £5,800 = £4,200

The combination of upfront relief and Loss Relief significantly reduces the effective risk compared with an unrelieved investment.

What Types of Organisations Qualify for SITR?

Qualifying Organisation Types

The following types of bodies can qualify:

• Charities — registered charities under the Charities Act, provided they carry on a qualifying trade or undertake qualifying activities.
• Community Interest Companies (CICs) — companies regulated by the CIC Regulator with an asset lock and community benefit purpose.
• Community Benefit Societies — registered under the Co-operative and Community Benefit Societies Act.
• Non-CIC companies — certain other companies that have a social purpose and meet HMRC's conditions.

Organisation-Level Conditions

The organisation must:

• Have gross assets of no more than £15 million before the investment and £16 million after.
• Have fewer than 500 full-time equivalent employees.
• Not be in financial difficulty at the time of investment.
• Carry out a qualifying trade — broadly, any trading activity other than excluded activities such as property development, financial services, farming, or energy generation.
• Use the investment within 28 months in the qualifying activity.

Advance Assurance

Before accepting SITR-qualifying investments, the organisation must obtain advance assurance from HMRC confirming that it appears to meet the qualifying conditions. Investors should always ask to see the advance assurance letter before committing capital. Advance assurance is not a guarantee — the organisation must continue to meet the conditions throughout the three-year holding period.

Types of Qualifying Investment

Equity (Shares)

Investors can acquire new ordinary shares in a qualifying CIC or qualifying company. The shares must be new shares — not bought from an existing holder. They must be fully paid up in cash at the time of investment and must not carry any preferential rights to assets on a winding-up.

Debt (Loans)

A significant difference from EIS is that SITR also covers qualifying debt instruments. To qualify:

• The loan must be a qualifying debt investment as defined by HMRC.
• The loan must not be secured on the assets of the organisation.
• The loan must not carry an above-market interest rate.
• Repayment terms must be fixed and not contingent on the organisation's performance.

The ability to invest via loans makes SITR accessible for investors who prefer debt to equity and for charities that cannot issue shares.

SITR vs EIS: Key Differences

The key advantages of SITR over EIS are the inclusion of debt investments and the broader range of qualifying organisations (particularly charities). The key disadvantage is that the qualifying universe is smaller in absolute number and the organisations themselves may be higher risk from a financial returns perspective.

Risks of SITR Investing

Social Enterprises Can Fail

Social enterprises operate in challenging environments — community services, arts, healthcare, housing — often with limited access to commercial capital. Failure rates are meaningful. The tax reliefs reduce but do not eliminate the risk.

Illiquidity

As with EIS and SEIS, SITR investments are illiquid. There is no secondary market for shares in a CIC or loans to a community benefit society. Investors should expect to hold for at least three years and potentially significantly longer.

Regulatory Change Risk

SITR has been subject to several extensions and modifications since its introduction. The long-term availability of the scheme is not guaranteed. Investors should seek advice on the current status of the scheme before committing capital.

The Bottom Line

Social Investment Tax Relief offers a genuinely powerful tax package — 30% Income Tax relief, CGT deferral, and Loss Relief — for investors who want to support social enterprises, charities, and community organisations while achieving tax efficiency. The inclusion of qualifying debt instruments sets SITR apart from EIS and makes it accessible for a wider range of investors and organisations. The risks are real: social enterprises can and do fail, investments are illiquid, and the scheme requires careful compliance with HMRC's conditions. For investors with an appetite for social impact alongside financial return, SITR remains one of the most tax-efficient vehicles available in the UK in 2026/27.