HMRC has announced that starting in 2027 new tax rules will apply to stocks-and-shares ISAs. The changes will tighten the current framework and could reduce incentives for investors. A major financial publication warned that the revisions bring new tax implications for households. Leading investment platforms have noted that the harsher restrictions may deter investors. The government is reviewing allowance rules as debate intensifies. Investors are urged to check their plans before the reforms launch.