How do regular saver accounts pay more interest than easy access savings?

Full answer

Regular saver accounts consistently top savings best-buy tables with headline rates well above equivalent easy access accounts, and banks can afford to offer these higher rates for two structural reasons: first, they cap the maximum monthly deposit (commonly somewhere between £150 and £500 a month, sometimes higher for accounts linked to a current account), limiting the bank's total interest cost per customer even at a generous rate; and second, they restrict or penalise withdrawals during the fixed term (commonly 12 months), giving the bank a predictable, gradually growing balance to work with, similar in some ways to a fixed-term bond but built up through contributions rather than a single lump sum. The crucial detail many savers miss is that the advertised interest rate applies to the full balance at any point, but because your balance starts at zero and only reaches the maximum contribution level in the final month of a 12-month term, you do not actually earn that rate on a full year's worth of the maximum balance — your genuine effective annual return is roughly half the advertised rate, since on average across the year only about half of the eventual maximum balance is actually sitting in the account earning interest. For example, a regular saver advertising 7% AER with a £300 monthly cap will pay meaningfully less in total cash interest over the year than a hypothetical account paying 7% on a full £3,600 lump sum deposited on day one — a useful sense check when comparing a regular saver's headline rate against alternative options for money you already have as a lump sum, since regular savers are specifically designed for saving new money each month, not for parking an existing lump sum. Use the Savings Interest calculator (selecting a regular saver / monthly contribution structure if available) to see your genuine expected interest in cash terms.

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