Paragon Financial institution evaluation reveals UK savers moved decisively in direction of tax-efficient money ISAs in 2025
Chancellor of the Exchequer Rachel Reeves (Picture: Dan Kitwood, Getty Pictures)
Grownup money ISA balances soared in 2025 as savers rushed to safeguard tax-free returns earlier than the Autumn Funds, based on contemporary evaluation by a financial institution which revealed money ISA balances climbing by greater than £50 billion whereas non-ISA balances declined. Evaluation of CACI information for the interval between the top of January and the top of December 2025 by Paragon Financial institution demonstrated that savers shifted decisively in direction of tax-efficient financial savings forward of the discount within the money ISA allowance introduced within the Autumn Funds.
All through the interval examined, the common grownup money ISA account stability grew from £15,919 to £17,225, whereas the common non-ISA account stability dropped barely from £11,919 to £11,909. Paragon indicated the info pointed to savers making an attempt to maximise tax-free curiosity earlier than potential modifications and the reducing of the money threshold.
Complete grownup money ISA balances climbed by £57 billion throughout the timeframe, with a considerable proportion of the expansion fuelled by sturdy demand for fixed-term merchandise. Total, grownup money ISA balances in accounts reached £436 billion throughout 25 million accounts at December 2025.
Mounted-term ISAs represented £35.8 billion of the whole enhance, rising to £237.7 billion as prospects secured charges earlier than an anticipated discount in rates of interest and shifts within the tax-free financial savings surroundings. Instantaneous entry ISA balances equally expanded, although at a extra modest fee, rising by £22.4 billion to £192.9 billion.
By comparability, non-ISA balances dropped by £1.8 billion throughout the identical timeframe to £845.6 billion unfold throughout 71 million accounts. This decline was predominantly attributed to fixed-term non-ISA balances lowering as savers moved funds into tax-efficient wrappers, based on Paragon.
Andrew Wright, Paragon Financial institution’s head of financial savings, mentioned: “2025 marked a transparent shift in saver behaviour, with many individuals taking proactive steps to guard their returns by making larger use of tax-efficient financial savings.
“Anticipation of modifications introduced within the Autumn Funds inspired savers to evaluate the place their cash was held and to maximise the advantages of money ISAs whereas allowances remained unchanged.
“What’s notably notable is the power of demand for fixed-term ISA merchandise.
“Savers weren’t solely responding to potential tax modifications, but additionally seeking to lock in aggressive charges amid expectations that rates of interest would start to fall.
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“This mix of tax planning and fee certainty made fixed-term ISAs particularly engaging.”
From April 2027, people underneath 65 will face a decreased annual money ISA contribution restrict of £12,000. While the general £20,000 ceiling stays unchanged following Chancellor Rachel Reeves’ Autumn Funds announcement, the £8,000 distinction should be allotted to an alternate ISA product.
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