Capital Gains Tax UK 2026/27: Rates, Allowances and How to Pay Less
£3,000. That's your entire tax-free gain for 2026/27. Three years ago it was £12,300. The arithmetic is brutal: the same investor who sheltered £2,460 of tax in 2022/23 now shields just £720 — and that's assuming they even use the allowance. The 2026/27 tax year is now underway and three structural changes have bedded in. First, the unified 18%/24% rates on all chargeable assets that came in from April 2025 remain in force — the old 10%/20% rates on shares are gone and they are not coming back. Second, Business Asset Disposal Relief has risen to 18%, completing its climb from 10% (pre-2025) through 14% (2025/26) to full alignment with the basic rate. Third, carried interest has been lifted out of CGT entirely — it's now Income Tax and NICs from 6 April 2026. The annual exempt amount stays frozen at £3,000 with no inflation mechanism. If you hold investments outside an ISA, a second property, or a business you plan to sell, CGT is no longer a niche concern. This guide covers every rate, relief, and strategy that matters for 2026/27 — with a focus on what you can actually do, right now, to pay less.