Clear Shift in ISA Allowance Spurs Surge in Cash ISA Balances Monday, March 16, 2026 isa savings cash isa allowance budget paragonbank tax interest rates fixed-term investment In 2025, adult cash ISA balances saw a significant jump as savers moved swiftly to secure tax-free returns ahead of changes announced in the Autumn Budget. New analysis from Paragon Bank, based on CACI data for the period … Read More