Stocks & Shares ISA Calculator
Estimate the future value of your Stocks & Shares ISA. Enter your initial investment, expected annual growth, optional annual contributions (up to £20,000 per tax year), and see both nominal and inflation-adjusted returns over your investment horizon.
Tip! Annual contributions cannot exceed £20,000 per tax year. You can set inflation to 0 to view nominal growth only.
| Initial Investment (£) | |
|---|---|
| Expected Annual Growth Rate (%) | |
| Years | |
| Adjust for Inflation? | |
| Annual Contribution (£) |
How to Use the Stocks & Shares ISA Calculator
Step-by-Step Instructions
- Enter your initial ISA investment (£).
- Enter the expected annual growth rate (%), based on your chosen investments.
- Specify the number of years you plan to keep the ISA invested.
- Optionally, add annual contributions up to the overall ISA allowance of £20,000 per tax year across all ISAs.
- Decide whether to adjust for inflation to see the real purchasing power of your ISA.
- Click "Calculate" to view projected future value, including nominal and inflation-adjusted returns.
Why Use a Stocks & Shares ISA Calculator?
A Stocks & Shares ISA allows your investments to grow in a tax-efficient wrapper. This calculator estimates potential growth over time, factoring in compounding, contributions, and inflation. It helps you plan long-term savings and compare different investment scenarios.
Key Points to Consider
- ISA contributions are capped at £20,000 per person per tax year across all ISAs.
- Stocks & Shares ISAs carry investment risk – the value of funds can fall as well as rise.
- Charges and fees may vary depending on the ISA provider and fund choice.
- This tool shows projections based on assumed growth; it is not financial advice.
- Unlike a Cash ISA, your capital is at risk and returns are not guaranteed.
- Use the inflation option to understand real purchasing power; disable it to see nominal growth only.
Tips for ISA Investors
- Keep total contributions within the £20,000 annual allowance to retain tax-free status.
- Check provider fees and fund charges to avoid erosion of investment returns.
- Review your growth assumptions based on realistic market expectations.
- Regularly contribute to take advantage of compounding over time.
- Consider this tool alongside other investment calculators, such as Dividend Yield & Income Calculator.
Related Guides
- Cash ISA vs Stocks & Shares ISA - Understand the key differences between ISA types, including risk, returns, and tax treatment.
- UK ISA Allowance & Rules Explained - Learn how the £20,000 ISA allowance works and how to maximise tax-free investing.
- How to Reach Your First £100k Investing - Practical strategies for building your first major investment milestone.
Frequently Asked Questions
What is a Stocks & Shares ISA calculator?
It estimates the growth of your Stocks & Shares ISA over time including optional contributions and inflation adjustment.
Can I include annual contributions?
Yes, contributions can be added up to the £20,000 annual ISA limit across all your ISAs in the same tax year.
Does this tool account for provider charges or fees?
No, this calculator shows gross growth. Actual returns may be reduced by provider fees, fund charges, or other costs.
Why adjust for inflation?
Inflation adjustment shows the real purchasing power of your ISA, giving a more accurate view of future value than nominal growth alone.
Is my capital at risk?
Yes. Unlike Cash ISAs, Stocks & Shares ISAs invest in funds or shares, so the value can go down as well as up.
Is this financial advice?
No. This calculator is for educational purposes and scenario planning only. It does not constitute financial advice or predict future market performance.