Monument Bank has entered the Cash ISA market with a new Boosted Rate account offering 4.28% AER, drawing a “best buy” designation and an “excellent” product rating from the financial comparison site Moneyfactscompare. The account is available to new customers only and requires a minimum deposit of £10,000, a threshold that positions it firmly towards savers with substantial existing funds rather than those building from scratch.
The headline rate is composed of two elements: a variable easy access rate of 3.74% AER, supplemented by a fixed bonus of 0.54% AER that applies for 12 months. Once that period expires, the rate will revert to the lower variable figure, meaning savers would be wise to reassess the account’s competitiveness at that point.
Withdrawal Flexibility Sets the Account Apart
Despite its relatively high minimum deposit, the account permits unlimited withdrawals without penalty, a feature that Caitlyn Eastell, personal finance analyst at Moneyfactscompare, highlighted as a significant draw.
“Investors who may need to dip into their pots may also be pleased to note that they have unlimited withdrawals with no penalty, which is sure to add to its appeal,” she said, adding that the account “takes a prominent position in the top charts when compared to its peers.”
Eastell also advised caution regarding the bonus structure, noting it “would be sensible to review the deal once it expires in 12 months.” The account accepts transfers from existing Cash ISAs, though any new deposits must constitute money that is fresh to the institution. Savers can currently shelter up to £20,000 per year in a Cash ISA under the annual allowance, with all interest earned remaining free from tax. Replacing withdrawn funds will not, according to Monument Bank, count against that allowance.
How the Monument Rate Compares to Rivals
The launch comes into a competitive easy-access Cash ISA landscape. Plum currently leads the market with a rate of 4.61% AER, though that figure incorporates a 12-month bonus of 2.05%, the largest bonus component of any comparable account, meaning the post-bonus drop would be considerably steeper than that experienced with Monument’s offering. Plum’s account can be opened with as little as £1.
According to Moneyfactscompare, the next best available rate is from Moneybox at 4.3%, which similarly includes a 12-month bonus, in this case 0.82%. That account requires a minimum opening deposit of £500. Tembo Money matches the Moneybox rate at 4.3% but carries a higher bonus element of 1.5% and sets its minimum opening balance at just £10, making it one of the more accessible options for smaller savers.
By contrast, Monument’s 4.28% rate sits marginally below both, though its withdrawal flexibility and the relatively modest size of its bonus component, meaning a softer rate reduction when it lapses, may appeal to those prioritising longer-term stability over the highest immediate return. As with all bonus-linked accounts, the key discipline for savers will be revisiting their choice once the introductory period concludes.
