UK Autumn Budget 2026: will any main capital gains tax rate rise?
One-OffRegulationMacro & Economy16dManifold MarketsNo KYCVerified resolution dataFairly calibratedCurrent community forecastNo 65%
Forecasters
2
Question type
binary
Methodology
Play-money forecasting platform
Source type
Forecast
Market data
Updated 4 minutes ago
Sep 22, 26, 2:32 PM UTCOct 28, 26, 12:00 PM UTC
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KalshiRules
YES if the 18% or 24% main rate (or either residential property rate) is increased, with any start date.
- Changes only to reliefs, allowances or carried interest resolve NO.
- Polymarket priced a CGT increase at 61% on 21 Sep 2026.
- Resolves YES if the measure is announced in the Chancellor's Budget speech on 28 October 2026 or appears in the Budget documents HM Treasury publishes that day (the Budget document, the policy decisions table, the policy costings, or the Overview of Tax Legislation and Rates).
- A measure announced earlier counts if those documents confirm it.
- A consultation, review or call for evidence alone resolves NO.