The implications of the cash ISA reforms, including the confirmation of new interest charges

The Treasury has confirmed plans for a charge on interest earned on cash held in a stocks and shares ISA, among other new restrictions on cash ISAs

The Treasury has confirmed in its most recent guidance on ISA reforms that investors will be charged for any interest paid on cash in an ISA for stocks and shares.

The cash ISA allowance for savers under 65 will be lowered to £12,000 annually starting in April 2027.

Additionally, the Treasury is limiting the amount that can be held in cash-style products within an ISA for stocks and shares and discouraging the holding of uninvested cash.

It has confirmed that starting in April 2027, there will be a 22% fee on any interest or alternative finance return paid on cash held within a non-cash ISA. This could come from dividends or funds that account holders haven't yet invested.

Watch the entire video here. Fortunately for investors, money market funds can be included in an ISA for stocks and shares as long as they don't account for all of the investments.

The Treasury stated that common investments held in stocks and shares ISAs, such as individual shares, funds, investment trusts, exchange-traded funds, and corporate and government bonds, including UK gilts, will not be regarded as cash-like assets.

"We are happy to see that cash-like investments will continue to be eligible for non-cash ISAs," stated James Carter, head of platform policy at Fidelity International.

"These products are real investment products that hold high-quality and short-term government debt, and they are an important component of many well-balanced portfolios. The government's goal of encouraging more people to invest would have been compromised if they had been removed from the stocks and shares ISA framework. This would have given consumers a difficult decision between sticking with cash or switching straight to riskier, more complicated products."

New limitations on money transfers into cash ISAs.

It will not be possible to transfer money from stocks and shares ISAs into cash ISAs, but it will be possible to do the opposite.

If they want to use the entire annual ISA allowance for that kind of account, people 65 and older will still be eligible for a higher cash ISA limit of £20,000 annually.

The prohibition on 100% cash-like investments and the fee on interest earned on cash in a stocks and shares ISA will continue, but the transfer restriction will be lifted.

The Treasury is expected to release a technical consultation regarding the operation of the charge.

Oxford Risk's head of behavioral finance, Greg Davies, has already cautioned that the move could backfire.

"It's a behavioral challenge to get people to invest," he stated. By making the initial step seem more difficult, punitive, and difficult to undo, you discourage anxious savers from investing.

"People switch from cash to markets when the path seems clear, secure enough, and appropriate for their objectives, time horizon, and financial situation. Adding tax fees and transfer limitations to an ISA system that is already complicated sends the exact wrong kind of behavioral signal.

This won't inspire confidence in many potential investors. It will lead to more reluctance, disengagement, and inaction."

AJ Bell's head of public policy, Rachel Vahey, cautioned that the changes are "increasingly complex" and "riddled with unintended consequences" and might cause people to simply keep their money in cash ISAs.

"Interest paid on cash in investment ISAs will be subject to a 22 percent fee under the new regulations," she stated. This is a flat rate charge, so regardless of whether the ISA account holder pays basic rate taxes, higher rate taxes, or no income tax at all, the same rate is applied.

"If an ISA holder invests all of their non-cash investment portfolio in money market funds, that would be considered a non-qualifying investment. This implies that they would be permitted to invest 1% in, say, UK stocks and 99% in money market funds.

Additionally, they could keep 50% of their portfolio in cash, but they wouldn't be permitted to keep the other 50% in money market funds. However, the regulations would allow them to hold 49% in money market funds and 1% in UK stocks."

Will cash interest be discontinued by investment platforms?

Interest is paid on money held in an ISA for stocks and shares by a number of investment platforms, including Bestinvest, AJ Bell, Interactive Investor, Fidelity, and Hargreaves Lansdown.

The advantage for investors is that they can receive dividends or cash in the wrapper and choose how to invest it, even though the rates are not very competitive.

As of right now, it's unclear whether platforms will cease paying interest or if investors will only need to be aware of the fee.

Carter stated: "We have continuously applauded the government's recent emphasis on promoting greater investment and better long-term results. The introduction of a targeted support regime, an education campaign about the advantages of investing, and a review of risk warnings are examples of recent initiatives that will help to reset the approach to risk and close the gap between long-term investment and precautionary cash savings.

"We anticipate the release of the technical consultation, which will contain additional information needed to help providers carry out these modifications."

The platform's decision to cease paying interest on cash was not addressed by an AJ Bell representative.

The anti-circumvention measures are a "disproportionate response to a problem that may never meaningfully materialize," according to Jason Hollands, managing director of Bestinvest."

"Investors will also need to weigh the relative difference in returns on a money market fund minus any platform fees versus holding cash and having the 22 percent charge deducted," he continued."

BFIA has requested comments from Interactive Investor and Hargreaves Lansdown.