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Looking to top up your ISA?

Get £300 to £3,000 cashback when you add a lump sum and/or apply to transfer into our ISA or SIPP by 5 April 2026. Minimum value, exclusions, T&Cs apply.

Important information - investment values can go down as well as up, so you may get back less than you invest. ISA eligibility and tax treatment depends on individual circumstances and tax rules may change. This is not a personal recommendation for a specific investment. If you're not sure which investments are suitable for you, consult Fidelity's advisers or another authorised financial adviser.

  • It’s easy to top up your Stocks and Shares ISA online.
  • Invest up to £20,000 in the 2025/26 tax year. You won't pay any tax on returns or on any income you take from your ISA.
  • Use this year’s allowance before 6 April 2026.

Topping up your ISA before the tax year ends means you can take advantage of your annual allowance before it runs out.

There’s a wide range of investments to choose from, including funds from popular providers or shares in UK, European and US companies.

Making regular contributions is a great way to potentially grow your money over time. This can help support your longer-term goals, like a comfortable retirement or a financial cushion for life’s unexpected moments.

Get £300 to £3,000 cashback when you add a lump sum or apply to transfer into our ISA or SIPP, or both, by 5 April 2026. The cashback is based on the total amount added across these accounts. Minimum value, exclusions, T&Cs apply.

Value Amount
£50,000 - £74,999 £300
£75,000 - £99,999 £600
£100,000 - £249,999 £1,000
£250,000 - £499,999 £1,500
£500,000 - £749,999 £1,800
£750,000 - £999,999 £2,000
£1,000,000 or over £3,000

Your cashback will be paid directly into your Cash Management Account within 90 days following the closure of the offer (5 April 2026). If your transfer hasn’t completed by then, we’ll pay your cashback within 90 days after the completion of your last eligible transfer.

Our Stocks & Shares ISA charges summary

Our service fee

The service fee is based on the total amount of money you have with us:

  • Less than £25,000 - 0.35% if you have a regular savings plan or £90 (£7.50 a month) if you don't
  • £25,000 or more but less than £250,000 - 0.35%
  • £250,000 or more but less than £1 million - 0.2%
  • £1 million+ - 0.2% a year for the first £1 million and no service fee for investments over £1 million. This means the maximum fee you will ever pay for all of your personal accounts is £2,000 a year.

There will also be investment charges set by the companies and funds you’re investing into, which sit outside of our service and dealing fees.

Our share dealing charges

There is a charge made for each buy and sell transaction you place (including switches and dividend reinvestments). This will be deducted from the amount invested or raised through a sale.

  • £7.50 - Simple charge for each deal placed online
  • £1.50 - for deals as part of a regular savings or withdrawal plan, or for a reinvestment of income or a dividend
  • £30 - for each deal made by phone

Stamp Duty can apply to shares. Levies, taxes and foreign exchange charges may also apply to certain transactions. See our Charges in detail page for a full breakdown of our fees and charges.

ISA FAQs

The 2025/26 ISA allowance is £20,000 and you have until 5 April 2026 to use it. Unfortunately, if you do not use all your ISA allowance in one year, you’re not able to carry this allowance over to the next year. That’s why it’s important to make the most of each year’s tax allowance where possible. Please note the annual ISA allowance may change in the future. The government decides what the allowance will be.

Find out more about the ISA allowance

You can start a regular savings plan from as little as £25 or make a lump sum payment with a minimum of £1,000. Once your account is open, you can put in as little or as much as you’d like, as long as it doesn’t exceed the £20,000 yearly ISA allowance limit.

The tax benefits of the ISA continue during the administration of your estate or the third anniversary of your date of death if sooner. Once probate is granted, your personal representative can distribute your investments to the beneficiary or beneficiaries. If eligible, your spouse (or civil partner) would be entitled to an additional allowance based on the value of your ISA. This is known as an Additional Permitted Subscription (APS).

What happens when an account holder has passed away.

No, if you're not sure where to invest, your money will be held as cash in your account until you're ready. If you're not sure where to invest, speak to one of Fidelity's advisers or an authorised financial adviser of your choice.

The income generated by investments in a stocks and shares ISA can either be paid out directly to you, reinvested back into the investment it has come from or held as cash in your account. However, there are some investment types that will only have the option to reinvest so it is important to understand what your preference is before choosing investments.

You can hold as many stocks and shares ISAs as you like across different providers.

Find out more about how many ISAs you can have