Summary
What it is
A one-off cashback payment based on the remaining value of ISA transfers you have completed into your Cash ISA through Sidekick at the end of a 12-month holding period, ranging from £100 to £500.
Who it is for
New and existing customers who transfer at least £10,000 from an existing ISA into a Cash ISA through Sidekick during the Promotion Period.
How long it lasts
The cashback is paid 12 months after the Transfer Qualifying Date, based on the transferred balance remaining in your Cash ISA at that date.
How it is applied
As a single lump sum payment into your Wallet.
Promotion Period
This promotion is available from 24th June 2026.
Eligibility
You are eligible for this cashback if you complete a transfer of at least £10,000 from an existing ISA into a Cash ISA through Sidekick during the Promotion Period. Both new and existing customers may apply.
You may make more than one qualifying transfer. Sequential transfers are permitted, though only one transfer can be in progress at a time. Where you make more than one qualifying transfer, the total combined value of all transfers received during the Promotion Period is used to determine your cashback tier.
Qualifying Action
You qualify for the Transfer Cashback by completing a transfer of at least £10,000 from an existing ISA into your Cash ISA through Sidekick during the Promotion Period.
The Transfer Qualifying Date is the date your first qualifying transfer is received and accepted into your Cash ISA. Where you make more than one qualifying transfer, the Transfer Qualifying Date is determined by the date of your first qualifying transfer, and the 12-month cashback period runs from that date.
There is no deadline by which you must initiate a transfer after opening your Cash ISA. You may open your Cash ISA, make new deposits, and choose to transfer in an existing ISA at any later point. The Transfer Qualifying Date and the 12-month cashback period will be set at the point your transfer completes.
Transfer Cashback
If you qualify, we will pay you a one-off cashback payment based on the remaining value of your qualifying transfers in your Cash ISA at the end of the 12-month period, as set out in the table below.
Transfer Value | Cashback |
£10,000 to £24,999 | £100 |
£25,000 to £74,999 | £250 |
£75,000 to £120,000 | £500 |
How the tier is determined
The cashback tier is based on the balance attributable to your qualifying ISA transfers that remains in your Cash ISA on the date 12 months after the Transfer Qualifying Date. For this purpose, the relevant balance is the value of your transferred funds remaining - it does not include interest accrued on your Cash ISA or any new deposits you have made. Where you have made more than one qualifying transfer, the combined remaining value of all qualifying transfers is used.
Withdrawal priority. Where you hold both qualifying transferred funds and new cash deposits in your Cash ISA, withdrawals are treated as coming from your cash deposits first and from your transferred funds second. For example, if you transferred £10,000 and separately deposited £10,000, and then withdrew £15,000, your remaining qualifying transfer balance for the purposes of the cashback calculation would be £5,000.
Re-deposited funds. If you withdraw funds and subsequently re-deposit them, the re-deposited amount is treated as a new cash deposit and does not restore or reinstate your qualifying transfer balance. The cashback calculation at the 12-month date will be based on the remaining transfer balance at that point, after applying the withdrawal priority rules above.
Maximum qualifying transfer value
The maximum transfer value that qualifies for a cashback is £120,000. If your total qualifying transfers exceed £120,000, the cashback will be calculated on the first £120,000 only. No additional cashback tier exists above £500.
Payment
The cashback is paid as a single lump sum into your Wallet 12 months after the Transfer Qualifying Date. Only one Transfer Cashback is available per customer.
Flexible ISA and Transferred Funds
Your Cash ISA is a flexible ISA. This means that new deposits you make to your Cash ISA in the current tax year may be withdrawn and re-deposited in the same tax year without counting against your annual ISA subscription allowance.
The flexible ISA feature applies to new deposits only. Funds transferred into your Cash ISA from a previous year’s ISA (‘transferred funds’) do not benefit from flexible ISA treatment. If you withdraw transferred funds, they cannot be re-deposited as a subscription and will permanently leave your ISA wrapper for the purposes of that tax year.
Because Bondsmith does not support partial transfers out, any transfer out of your Cash ISA will be a full transfer and will result in the Transfer Cashback not being paid (see ‘When It Ends Early’ below).
When It Ends Early
The Transfer Cashback will not be paid if, before the 12-month payment date:
you close your Cash ISA; or
you transfer your Cash ISA out in full; or
we withhold the cashback in line with ‘When we may withhold, withdraw or correct’.
There is no requirement to maintain a minimum balance in your Cash ISA during the 12-month period. You may make withdrawals without losing your entitlement to the cashback, provided you do not close your Cash ISA or transfer it out in full. Any withdrawal of transferred funds will reduce the balance on which the cashback is calculated at the end of the term, in accordance with the withdrawal priority rules set out above.
Withdrawal of This Promotion
We may withdraw this promotion at any time. If we do, it will not affect any Transfer Cashback where the 12-month period has already elapsed before the withdrawal date, unless we are entitled to withhold, withdraw or correct it under the section below.
Limits
Only one Transfer Cashback is available per customer. If you hold more than one Sidekick account, we will treat them as belonging to the same customer when applying this limit.
FSCS Protection
Your Cash ISA deposits may be held across up to 3 Partner Banks. You may be entitled to FSCS protection of up to £120,000 per eligible depositor per Partner Bank, providing potential protection of up to £360,000 in total. Please see the Bondsmith Terms for more information.
When We May Withhold, Withdraw or Correct
This promotion is intended for customers with a genuine intent to transfer and hold ISA balances for the qualifying period. We intend to pay the Transfer Cashback where you meet the conditions in this Schedule. However, we may withhold, withdraw or correct the cashback (including reclaiming any overpayment) if we reasonably believe:
you are not eligible;
the qualifying transfer was not completed during the Promotion Period;
there has been an error in calculation or application;
there is actual or suspected misuse, fraud, gaming or attempted circumvention of the spirit of this promotion — this includes, without limitation: creating multiple accounts to obtain multiple cashback payments; loading funds into your Cash ISA shortly before the 12-month payment date with the intention of withdrawing them thereafter; or any other behaviour inconsistent with the spirit of this promotion; or
we need to do so to comply with law or regulation, or for operational or risk management reasons.
Tax
The Transfer Cashback is paid into your Wallet, outside of your Cash ISA wrapper, and is generally subject to income tax. Because it is not savings interest, the personal savings allowance does not apply to it. We will pay the cashback without withholding or deduction. You are responsible for calculating and paying any tax you owe on it.
The cashback will count as income in the tax year in which it is paid. If you complete a Self Assessment tax return, you should include it. You should seek specialist tax advice if you are unsure of your tax position.