Best Isa 2025 Rates Uk. Compare the best cash isas and cash isa rates of 2025. Though they aren’t the only way to earn interest without paying tax, they can still be worth looking at to get the best rates on your cash.

Compare the best cash isa rates from trusted providers. Based on the accounts listed in the article, the current best fixed cash isa rates in the uk are 4% to 6%.