# ISA cash limit unchanged: should you invest?

> Savers can keep up to £20,000 in cash ISAs after rule changes; should they shift to stocks?
- Title: ISA cash limit unchanged: should you invest? · MoneyWeek
- Summary: Savers can keep up to £20,000 in cash ISAs after rule changes; should they shift to stocks?
- Keywords: cash isa, stocks and shares isa, isa allowance, investment returns, savings interest, tax-free investment, isa transfer, emergency fund, MoneyWeek
- Source: MoneyWeek — https://moneyweek.com/personal-finance/used-isa-limit-on-cash-before-changes-should-i-invest
- Published: 2026-11-06T07:00:00+00:00
- Read time: 1 min
- Topics: cash isa, stocks and shares isa, isa allowance, investment returns, savings interest, tax-free investment, isa transfer, emergency fund
## ISA cash limit unchanged
Savers can continue putting up to £20,000 a year into cash ISAs after the chancellor reversed plans to reduce the limit.
## Record cash ISA deposits
A record £57 billion was deposited in cash ISAs in 2025, according to the Bank of England.
## Why hold too much cash?
Holding cash above emergency needs creates opportunity costs as you miss potential investment returns.
## Andy Reed's warning
Andy Reed, head of behavioural economics research at Vanguard, said having cash beyond short-term needs means you're giving up significant returns.
## Cash vs. investment returns
The top five-year fixed rate cash ISA paid 5.25% interest, earning £5,989 on £20,000 over five years.
## Stock market potential
The S&P 500 has delivered average annual returns of 13% over five years, growing £20,000 to £38,177.
## Helen Morrissey's advice
Helen Morrissey, head of retirement analysis at Hargreaves Lansdown, says invest if you need money beyond three years.
## ISA transfer process
You can transfer cash ISA funds to stocks and shares ISAs without affecting your annual allowance.
## Avoid withdrawing first
Withdrawing from an ISA before transferring breaches your annual allowance and loses tax-free status.
## Key transfer steps
Contact your ISA provider to request a transfer; fill in the form and follow the process to maintain tax-free status.
## Key takeaway

Savers who used full £20,000 ISA allowance on cash can transfer to stocks and shares ISAs without losing annual allowance.