Best Cash ISA Rates July 2026: Easy Access & Fixed AERs
The easy-access leader just bumped its rate to 4.63%. Inflation dropped to 2.8%. And NS&I — the government's own savings bank — just launched fixed-rate accounts at 4.69%, the highest number with a Treasury guarantee attached. That changes the arithmetic. Two months ago, a 4.51% cash ISA earning 3.3% inflation gave you 1.21% real. Today, 4.63% against 2.8% CPI gives you 1.83% — a 50% improvement in real-terms purchasing power before you have done anything except wait. The Bank of England held Bank Rate at 3.75% for the second consecutive meeting on 18 June, and markets now price no cut before September at the earliest. Meanwhile the energy price cap rose on 1 July, adding roughly £110 to the average annual dual-fuel bill — a fresh squeeze that makes the case for maximising every tax-free pound. This is not a list of headline rates. It is the July 2026 verdict on what "best" means for four distinct types of saver, updated with the latest MoneySavingExpert best buys and the NS&I entry that changes the fixed-rate conversation. Rates are accurate as of 1 July 2026 and sourced from MSE's best cash ISA page, which was last updated 30 June 2026.