A good way to boost your ISA returns in 2026 is to ensure you are getting the best deal when you sign up. There are a number of ISA providers willing to offer generous incentives such as bonuses worth up to £2,500 and fee-free investing; and many have offers for transferring an existing ISA too. In this article, we list the best Stocks and Shares ISA offers from the UK's best ISA providers. Check out our table below where we reveal our top picks, including the best ISA cashback deals, top fee-free offers and other deals we feel offer great value.
Best investment ISA cashback offers and deals - June 2026
| Provider | Offer | Offer Type | Small print | Provider reviews | |
| IG* | Get up to £300 in free shares* | Free shares | Until 31st December, new IG investment clients who trade a minimum of £300 via an IG GIA, ISA or SIPP account will receive a randomly allocated bundle of UK-listed shares worth between £40 and £300*. Use code WELCOME300 when creating an account. Cannot be used in conjunction with other offers. Terms & fees apply. Capital at risk. | IG review |  Partner Spotlight |
| Moneyfarm* | 12 months fee-free investing* | Fee-free investing | Fee-free offer - Sign up to Moneyfarm, invest at least £500 and pay no management fees for 12 months. Terms and conditions apply. Capital at risk | Moneyfarm review | |
| J.P. Morgan Personal Investing (formerly Nutmeg) | N/A | N/A | N/A | Click to read our J.P. Morgan Personal Investing review | |
| Interactive Investor* | Free Trades* | Free Trades | New customers will receive £100 free trades when they open an Interactive Investor self-managed or Managed ISA* before 30th June 2026. Terms & fees apply. Capital at risk. | Interactive Investor review | |
| Freetrade* |
Get FREE SHARE worth up to £100 when you sign up*
|
Free Share | Receive a free share worth up to £100. Simply deposit at least £50 into a Freetrade ISA (capital at risk) or Freetrade basic account (capital at risk). The probability is weighted, so more expensive shares will be rarer. Terms and conditions apply. Capital at risk. | Freetrade review | |
| Charles Stanley Direct* | Get up to £1,500 cashback* | Cashback | Get up to £1,500 cashback* when you transfer your cash and/or investments to Charles Stanley Direct. Minimum transfer £20,000. To be eligible for up to £1,500 cashback, transfer your cash and/or investments from another provider to a General Investment Account, ISA, Junior ISA or SIPP with Charles Stanley Direct Online Investing and continue to hold such cash and/or investments for a period of 12 months. Terms and fees apply. Capital at risk. | Charles Stanley review | |
| Wealthify (an Aviva company)* | 12 months fee-free investing* | Fee-free investing | Invest in a Wealthify Stocks and Shares ISA*, Junior ISA* or General Investment account* and you could benefit from 12 months with no management fees. New customers only. Offer ends 2nd September 2026. Minimum investments and T&Cs Apply. Capital at risk. Find out more*. The tax treatment of your investment will depend on your individual circumstances and may change in the future. | Wealthify review | |
| Quilter Invest* | Reduced fees* | Reduced fees | Open and fund a Quilter Invest* investing account before 31st July 2026 to unlock a £0 subscription fee (usually £2p/m), and 0.15% annual platform fee (usually 0.25%). Use code SUMMER26. Authorised and regulated by the FCA. Please be aware that the value of your investments can go down as well as up, and you may get back less than you invest. ISA and tax rules apply. | Quilter Invest | |
| Hargreaves Lansdown* | N/A | N/A | Hargreaves Lansdown ran a cashback offer worth up to £3,000, however, it expired on 5th April 2025. We will update this table as soon as another offer becomes available. | Hargreaves Lansdown review | |
| AJ Bell Dodl* | N/A | N/A | N/A | AJ Bell Dodl review | |
| Vanguard | N/A | N/A | Read our Interactive Investor review to find out how you can invest in Vanguard funds | Vanguard review |
Partner Spotlight Disclosure: Products featuring the "Partner Spotlight" visual are commercial placements purchased by a partner and are clearly highlighted as such. The inclusion of a listing in our best buy table is determined solely by our independent editorial criteria and is based on product merit.
Cashback offers and deals explained
There are a number of different types of offer that are available when you shop around for the best ISA deal and it is worth explaining the different deals available so you can work out which is the best offer for you. We've listed the different types of ISA offer below with an explanation of each.
- Cashback offers - Paid in a variety of ways. Can usually be paid into your nominated bank account or paid as cash into your investment account.
- Investment bonus - Similar to cashback but is often paid as a bonus cash amount, usually into your investment account.
- Fee-free deals - Offers fee-free investing for a period of time, often up to 12 months.
- Free shares - A popular deal offered by trading apps as an incentive for signing up.
- Trading credits - Depending on the investment platform you choose, you may be charged a fee for making certain trades. Trading credits are sometimes offered as an incentive when you sign up, meaning you can use credits rather than paying a fee each time you make a trade.
Other cashback offers and deals
This article focuses on the best ISA cashback offers and deals. For the best offers for other investment products including pensions, click on the articles below.
- Pension cashback offers and fee-free investing deals
- Check out our Deals of the Week page
- Save 20% when you purchase a Will
- Sign up to our newsletter and get £10 bonus cashback with TopCashback
When investing, your capital is at risk and you may get back less than invested. Past performance doesn’t guarantee future results
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