The value of your investment can go down as well as up and you may get back less than you paid in. Laws and tax rules may change in the future. Your own circumstances and where you live in the UK also have an impact on tax treatment.

How our ISA Calculator works

ISAs can be a tax-efficient way for you to save money and to invest in Stocks & Shares.

But how much could your savings be worth in the future? Our quick and easy ISA calculator can give you an idea of how much your money could be worth over the next five years. Keep in mind that growth is an assumption and doesn’t reflect how your money will perform.


Your regular payments

Max £1,666 per month, £20,000 per year 


One-off payment

Help with One-off payment?

Choose your growth rate (%)

Help with growth rate?
View important information, assumptions and limitations

Learn more about ISAs

Our ISA guides are full of information to help you on your savings journey.

ISA options

A Stocks & Shares ISA could be a good option if you’re looking for a tax-efficient way to invest your money. Explore our Stocks & Shares ISA here.

Explore your options

Open a Stocks & Shares ISA

  • Apply online in minutes
  • Decide how much you want to invest  
  • Choose how much or how little risk you want to take

Apply now

More about ISAs

ISAs are a tax-efficient way to save money and invest it for the future. Find out more about how they can help you meet your goals below.