Yes. You can transfer an existing cash ISA to your Triodos cash ISA. If you don't already have a Triodos cash ISA, you will need to open one first. Explore our range of ethical ISAs to find the right one for you, then apply via the Triodos Mobile Banking App.

To request the transfer, you’ll need to download and complete the relevant form below. The forms are interactive so you can fill out your details online, but you’ll need to print the form and sign it using a pen.

Then simply return it to ‘Freepost TRIODOS BANK’ and we’ll transfer your money directly between your ISAs and protect your tax-free ISA status. Do not move your money out of an ISA yourself, because your money will lose this ISA status.

The transfer process usually takes between 14-30 days. We’ll write to you when the transfer is complete.

If you are transferring to a new Fixed Rate ISA, please note that it can take up to 30 days to complete a transfer. We must receive your money from your existing provider within 60 days of the Fixed Rate ISA account opening date, so please make sure you start the transfer process as soon as possible.

The ISA allowance is the maximum amount you can invest across all types of ISAs in any one tax year. You can put your whole allowance into a particular type of ISA or you can split it between the different types of ISAs: Cash, Stocks & Shares, Lifetime and Innovative Finance. The ISA allowance for the 2025/26 tax year is £20,000. For Junior Cash ISAs, the allowance is £9,000.

Yes, you can split your ISA allowance into different types of ISA: Cash, Stocks & Shares, Lifetime, and Innovative Finance.

Since 6 April 2024, you have been able to subscribe to more than one Cash, Stocks & Shares or Innovative Finance ISA in the same tax year. However, it is still only possible to have one Lifetime ISA. Please note that Triodos does not offer Lifetime ISAs.

To top up a Triodos cash ISA you can:

• Make an online payment from another account (either an account with another provider or another Triodos account that allows withdrawals).
• Send us a cheque if the Triodos cash ISA you want to top up accepts cheque.

The following accounts do not accept cheque payments:

• Online Cash ISA
• Fixed Rate Cash ISAs

If you want to deposit a cheque, please post it along with your account details or a paying-in slip to: ‘Freepost TRIODOS BANK’ (no stamp required)

The Triodos Bank sort code is 16-58-10 and you can find your Triodos cash ISA account number by logging in to your account online or via the Triodos Mobile Banking App, or by checking your bank statements.

By completing an application for any of our Personal Savings accounts online you are automatically registered for Internet Banking and can manage your account online.

If your application was made by post, then Internet Banking access is available for the following Personal Savings accounts:

• Triodos Saver
• Triodos Cash ISA
• Triodos Regular Saver
• Triodos Fixed Regular Saver
• Triodos Charity Saver

You can also access Triodos Right Start Saver and Junior ISA accounts online, but you can't make payments from these accounts.

If you want to apply to manage your existing Triodos account online, download the application form below or call us on 0330 355 0355 and we'll send you one. Before completing an application form, please ensure you have read our Terms and Conditions for personal savings accounts below.