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Tax treatment depends on individual circumstances and may be subject to change in the future. *New customer rate as of 11/04/2025. Subject to conditions, includes bonus rate of 1.51% for first 3 months.
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A Cash ISA is an individual savings account that you can use to earn interest on your money. You can save up to £20,000 into a Cash ISA each tax year, and the interest you earn is completely tax-free.
With the Moneybox Cash ISA, you’ll earn a market-leading 5.71%* AER (variable) on balances of £500 or more, which includes a bonus rate of 1.51% for your first 3 months.
A lower interest rate of 0.75% AER (variable) applies whenever your account balance is less than £500. It also applies for the rest of your current 12-month period from your fourth withdrawal. The number of withdrawals you can make without impacting your rate will reset each year on the date you opened your Cash ISA.
Start savingYou can open a Cash ISA in minutes with Moneybox. Simply sign up, login via the website or download the app, and deposit a minimum of £500 to get started.
Plus, you can easily transfer in any ISAs you hold with other providers into a Moneybox Cash ISA, with no paper forms.
Grow your long-term savings
Save in a way that works for you with weekly, payday, and one-off deposits, completely tax-free.Maximise your ISA allowance
Achieve your financial goals and make the most of your £20,000 ISA allowance each tax year.Transfer an ISA in from elsewhere
Transfer any ISAs you hold with other providers into a Moneybox Cash ISA.
Moneybox Cash ISA
Higher Interest Rate (including a bonus interest rate of 1.51% AER for 3 months): 5.71% AER (variable)
Higher Interest Rate (after 3 months): 4.20% AER (variable)
Lower Interest Rate: 0.75% AER (variable)
Interest is earned daily on cleared balances and is rounded down to the nearest penny.
Interest accrued due to the underlying interest rate is paid monthly on the first day of the month, unless otherwise stated.
The bonus interest rate will be applied for 3 months from the date you open your Moneybox Cash ISA.
The bonus interest will be calculated daily and paid on the first day of each month into your Moneybox Cash ISA as interest
Estimated balance after 12 months (higher interest rate of 5.71% including 1.51% bonus interest rate for 3 months) and then higher interest rate of 4.20% applying for the subsequent 9 months: £1045.74
This assumes that:
Estimated balance after 12 months (lower interest rate of 0.75%): £967.33
This assumes that:
Estimated balance after 24 months (higher interest rate of 5.71% including 1.51% bonus interest rate for 3 months) and then higher interest rate of 4.20% applying for the subsequent 21 months: £1089.66
This assumes that:
Estimated balance after 24 months (lower interest rate of 0.75%): £974.58
This assumes that:
*5.71% AER (variable) includes a bonus rate of 1.51% for the first 3 months. A lower rate of 0.75% AER (variable) applies if account conditions aren’t met.
Interest is accrued daily and paid into your account on the first day of each month. The rate is variable, and we’ll inform you if it changes.
Tax treatment depends on individual circumstances and may be subject to change in the future.
Capital at risk. All investing should be for the longer term. The value of your investments can go up and down, and you may get back less than you invest. Tax treatment depends on individual circumstances and may be subject to change in the future.
A 25% government penalty applies if you withdraw money from a Lifetime ISA for any reason other than buying your first home (up to £450,000) or for retirement, and you may get back less than you paid into your Lifetime ISA.
Your home may be repossessed if you do not keep up repayments on your mortgage.
Payments you make into your pension won’t be accessible until the minimum pension age (currently 55, increasing to age 57 from 2028). Tax treatment depends on individual circumstances and may be subject to change in the future.