UK ISA Growth Calculator
Put in what you've already got, what you can add each month, the return you're aiming for (6–8% is the long-run average for a global equity tracker, but past performance isn't a guarantee) and how long you plan to leave it. We'll project the pot value.
You will have contributed
£46,000
Investment growth
£29,159
Future value (15y)
£75,159
About these figures. Illustrative only. Real returns vary year-to-year and can be negative; this calculator assumes a constant annual return for simplicity. The figures ignore platform fees, fund charges, and inflation. The ISA annual allowance is £20,000 (2025/26). This is not financial advice — for a regulated recommendation, consult an FCA-authorised adviser.
Important — this is general information, not financial advice. Figures and examples are illustrative and may go out of date. This is not a personal recommendation. For advice tailored to your situation, speak to an FCA-authorised adviser.
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