ISA calculator

See how much your ISAs could be worth in 20 years. Enter the value of your current stocks and shares ISAs, or the amount you will contribute this year, and select a risk level.

1Your starting amount


2Select a risk level


Sample portfolio

UK equity
Overseas equity
UK Government bonds

Money you could have after years
Stocks & shares ISACash ISA
Better than expected return
Expected return
Worse than expected return
With a stocks and shares ISA your capital is at risk as the value of your investment may fall as well as rise. Cash deposits are generally protected by the Financial Services Compensation Scheme up to £85,000. Check with your provider.

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Stocks & shares ISA returns

The projections are based on estimated long-term average returns for a portfolio of equities and government bonds, in different percentages depending on the risk level, using historic volatility of each asset class since 1986. We have assumed a 1.0% annual management fee, which has been deducted from the projections shown. We also assume income is re-invested.

Cash ISA returns

Nutmeg calculations are based on data from Bank of England, Bloomberg as at 06/07/2017. Money market rates have been used to estimate future interest rates at monthly and yearly intervals up to ten years ahead. ISA rates are calculated monthly based on the historic premium of ISA deposit rates (excluding unconditional bonuses) over a money market rate. Lower and higher bands are estimated as a rate 0.5% below and above the expected rate in year two, 0.75% in year three and 1% thereafter. Rates beyond ten years are assumed to equal the ten year rate.