Households in the UK are being alerted to upcoming changes in cash Individual Savings Account (ISA) regulations that will significantly affect their savings. Starting in April 2027, the tax-free limit for cash ISAs will be reduced from £20,000 to £12,000 for individuals under the age of 65. This change poses a challenge for savers, as they will have less opportunity to earn interest on their savings before being subject to taxation. Experts are advising those with sufficient savings to take advantage of the current limit to maximize their interest earnings before the reduction takes effect. The number of cash ISA deals has surged, reaching a record high of 712 accounts as of April 1, 2026, offering various options for savers. Additionally, the average instant-access cash ISA rates have increased from 2.61% to 2.73% AER, providing further incentive for households to act quickly. Notably, pensioners aged 65 and older will remain unaffected by this limit change, allowing them to continue benefiting from the higher limit.