- Martin Lewis has issued a "use it or lose it" warning to ISA account holders as an April deadline approaches.
- The Money Saving Expert founder explained that ISAs have an annual allowance of £20,000.
- Account holders must save or invest this amount by 5 April, which marks the end of the tax year.
- The unused allowance does not carry over to the next tax year, meaning it is lost if not utilised by the deadline.
- Government data from 2025 indicates that around 15 million adult ISA accounts were subscribed to in the 2023-2024 tax year.
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