READ MORE: Money Talk: Should you be switching between savings deals? The Bank of England recently kept the base rate at 0.1 percent and as a result, savers are losing out as their cash is growing at a slower rate than inflation, creating negative real returns. This low base rate has, according to Salisbury House Wealth, suppressed interest rates offered by providers, meaning savers will struggle to find competitive interest rates even when shopping around. Salisbury House Wealth detailed: “The lowest cash ISA interest rates are offered by instant access accounts at an average of just 0.25 percent, down from 1.08 percent last year.