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Imperial Axis · File 17

3 min

Yusuf Choudhury · Editor · 2 November 2026

Founders Relief: 10 percent, £10m lifetime

Eligible founders and early investors may pay 10 percent Capital Gains Tax on up to £10 million of lifetime gains. The design is still out for consultation.

The number

£10m

Lifetime CGT gains at 10 percent

Source · HM Treasury

What happened

Budget 2026 adds a Capital Gains Tax relief for founders and significant early investors in high-growth UK companies. Consultation closes 30 November 2026. Relief applies from 6 April 2027.

What happened.

Technical consultation on Founders Relief: 10 percent CGT on qualifying disposals, £10 million lifetime limit, from 6 April 2027. Closes 30 November 2026. Read the full piece at HM Treasury.

Budget 2026 presents Founders Relief as part of backing British businesses to innovate and grow, alongside the trading allowance rise and other start-up measures. Read the full piece at GOV.UK Budget news.

We stay inside primary reporting. When two outlets disagree on timing or magnitude, we say so instead of smoothing the numbers.

Why it matters to operators.

Conditions first: Individual, company, and growth tests are what the consultation is for. Do not promise the rate to a board until those are fixed.

Early money counts: Significant early investors are named. Cap tables and who held what, when, will matter at exit.

This is operator translation, not hype. If the claim does not change a decision you would make this quarter, skip it and read the sources anyway.

Do this today.

Diary the deadline: Put 30 November 2026 on the calendar. Reply to EnterpriseTax@hmtreasury.gov.uk if the draft conditions hit your cap table.

The step is sized for ten minutes on a calendar, not a workshop. Do it once, note what you learned, then share the issue if it earned it.

This is the main Imperial Axis wire: what changed, why operators should care, and one move you can make before the week runs away from you.

Pulling it together: Budget 2026 adds a Capital Gains Tax relief for founders and significant early investors in high-growth UK companies. Consultation closes 30 November 2026. Relief applies from 6 April 2027. The sourced items above are the spine. None of them replace opening the primary links when compliance or revenue depends on a detail we shortened for space. Discuss this in a ten minute stand up: what changed, who owns the response, and what you will stop doing that no longer matches the market.

Issue 17: Founders Relief: 10 percent, £10m lifetime. Every line above is tied to a named source or an explicit operator judgment. Read the links, then do the ten minute action at the bottom. That is the Imperial Axis rhythm: short enough for a weekday, serious enough to share.

Why it matters

  1. 01Exit modelling for UK scale-ups just changed on paper. The conditions are not final until the consultation closes.
  2. 02Significant early investors are in scope, not only the founder on day one.
  3. 03If you raise or sell after April 2027, the share class and company tests will matter more than the headline rate.

Do this in 10 minutes

Open the HM Treasury PDF. Write three lines: who counts as a founder, who counts as a significant early investor, and when your next share disposal could fall.

Share line

10 percent CGT on up to £10m of lifetime gains. Consultation closes 30 November 2026.

Founders Relief: 10 percent, £10m lifetime | Imperial Axis