Free calculator
Investment Return Calculator | Ireland
Use the investment return calculator when the question is not just how much an asset may grow, but whether the return clears the target you need after the time, contributions, and risk involved. It is most useful when you are comparing several scenarios or weighing investing against a lower-risk savings route.
Interpretation
What your result means
Use the notes below to understand the main figures in your result and when this calculator is most useful.
When to use this calculator
- Before choosing between saving, investing, or increasing your monthly contribution.
- When you want to compare best-case, base-case, and cautious return assumptions.
- When you need a quick projection before making a longer-term portfolio decision.
Total Return
This is the headline outcome, but it is most useful when viewed alongside the supporting metrics below it.
Profit
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Annualised
Use this metric to compare scenarios side by side and understand how the key drivers affect the final outcome.
Next steps
What to do next
Continue with the most relevant next step based on your result.
Browse Investments & Savings calculators
Compare the surrounding tools in this topic before making a final decision.
Compound Interest Calculator
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Investment Calculator vs Compound Interest Calculator: Key Differences
Compare investment return and compound interest calculations to choose the right tool for your needs.
Example
Example: projecting a long-term return plan
A realistic example to help you understand how the numbers fit together.
Initial investment
€20,000
Monthly top-up
€300
Expected annual return
7%
Time horizon
12 years
This example turns a vague target into a contribution path. If the end value still misses the goal under a cautious return, the plan usually needs a bigger contribution or longer timeline, not just more optimism.
Avoid mistakes
Common mistakes
A few things that often lead to misleading or incomplete results.
FAQ
Frequently asked questions
Helpful answers to common questions about this calculator.
How does the investment calculator compute returns?
The investment calculator multiplies your initial investment by the annual return rate, compounded over the number of years specified. It assumes regular contributions (if specified) are added at intervals and also earn returns.
What data do I need to input?
You need your initial investment amount, expected annual return as a percentage, and investment duration in years. Optional inputs may include: regular contribution amounts, contribution frequency, and inflation adjustments.
How reliable are the projected returns?
Investment projections are estimates based on historical returns. Actual returns vary and can be higher or lower. Past performance does not guarantee future results. Use projections as a planning tool, not a guarantee.
Can I use this for investments in my region?
Yes, the calculation method applies globally. However, adjust the expected return rate to match your local market and investment type. Returns vary by asset class, currency, and regional conditions.
What does the final investment value represent?
The final investment value is your projected total account balance at the end of the investment period, including your initial investment, all contributions, and accumulated returns (including compound growth).
How often should I review my investment projections?
Review annually or when market conditions change significantly, when your goals shift, or when you adjust contribution amounts. Regular reviews help keep your plan aligned with actual market performance.
Is my investment data confidential?
Yes, all calculations are performed in your browser. Your investment amounts and targets are never stored or transmitted to our servers. See our privacy policy for full details.
What simplifications are made in this calculator?
This calculator assumes consistent annual returns and regular contributions at fixed intervals. It does not account for market volatility, taxes on gains, trading fees, or economic inflation unless you enable those options.
Related
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Index Fund Calculator
Project index fund investment growth with lump sum and regular contributions. See long-term compound returns.