HMRC has announced a new 22% tax on cash interest held within stocks and shares ISAs, a move that will impact savers who hold significant cash balances in these accounts. The tax, which takes effect from the next tax year, is designed to generate additional revenue and address what the government sees as an unintended loophole.
Details of the New Tax
Under the new rules, any interest earned on cash held in a stocks and shares ISA will be subject to a 22% tax. This applies to cash balances that are not invested in stocks or other qualifying assets. The tax will be deducted at source by the ISA provider before the interest is credited to the account.
According to HMRC, the measure is expected to raise approximately £1.2 billion over the next five years. The tax targets investors who use stocks and shares ISAs primarily as cash savings accounts, rather than for investment purposes.
Impact on Savers
The change will particularly affect those with large cash holdings within their ISAs. Currently, around 15% of stocks and shares ISA holders have cash balances exceeding £20,000. For these savers, the tax could significantly reduce their returns. For example, a saver with £50,000 in cash earning 3% interest would see their annual interest of £1,500 reduced by £330 under the new tax.
Financial experts have criticised the move. Sarah Coles, head of personal finance at Hargreaves Lansdown, said: "This is a stealth tax on savers who are simply being cautious. Many investors keep cash in their ISAs as a buffer against market volatility, and this tax penalises prudence."
Government Rationale
The government argues that the tax is necessary to ensure fairness and prevent abuse of the ISA system. A Treasury spokesperson said: "Stocks and shares ISAs are designed to encourage long-term investment. Holding large cash balances undermines this purpose and represents a tax loophole that we are closing."
The move is part of a broader effort to increase tax revenues amid fiscal pressures. The government has faced criticism for relying on what some call "stealth taxes" rather than more transparent measures.
What Savers Should Do
For those affected, options include moving cash into a separate cash ISA, where interest is currently tax-free, or investing the money in stocks or other qualifying assets within the stocks and shares ISA. However, cash ISAs have lower interest rates, and investing carries risks.
Financial advisers recommend reviewing your ISA strategy. "If you have a large cash balance in a stocks and shares ISA, it's worth considering whether you need that liquidity or if you can invest it for better returns," said Mark Johnson, a chartered financial planner.
The new tax has sparked debate about the future of ISAs and whether further changes are likely. With the government seeking to maximise revenue, savers may face more such adjustments in coming years.
