Our simple calculator shows you how much an Investment ISA could be worth in the future. You can use it to see the range of possible returns if it grows at one of three example rates of growth of 2%, 5% and 8%. There’s also a Goal calculator, which shows how much you’d need to invest regularly to meet your target amount over a set time period.

ISAs are a great way to invest, as any gains or income are free from personal tax. There’s an annual ISA allowance, which covers contributions to investment ISAs, cash ISAs and innovative finance ISAs. This year’s ISA allowance is £20,000. You can decide whether to invest this in an investment ISA, save it in a cash ISA or innovative finance ISA, or any combination of the three, as long as you don’t exceed the annual allowance.

These illustrations are not guaranteed and projections are not a reliable indicator of future performance. The value of an investment can fall as well as rise and you could get back less than you originally invested. If you’re in any doubt about making your own investment decisions, we recommend you seek advice from a suitably qualified financial advisor. Tax treatment depends on your personal circumstances and may change in the future.