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Tools

Goal-Based Investing Calculator

Use this calculator to estimate how much you may need to invest to work toward a specific goal. Instead of asking “how much could this grow?”, this tool starts from the other direction: “what would I need to do to reach my target?”

This is especially useful if you are investing with a purpose. Your goal might be long-term wealth building, financial flexibility, an early retirement target or simply reaching a portfolio value that feels meaningful to you. By entering your target amount, time horizon, starting capital and return assumption, you can estimate how much you may need to invest regularly.

This calculator is helpful because it turns a vague goal into a practical monthly number. It can also show when a target may require either more time, higher contributions or more realistic expectations. In that sense, it is not just a calculator — it is also a planning tool.

Good for: setting a realistic investing plan, understanding the gap between today and your target, and adjusting contributions or timeline.

Try this: test the same goal with two different timelines and see how much

Inputs

Illustrative assumptions only — not a forecast.

Results

Required monthly investment301 €
Total contributions54,199 €
Estimated growth45,802 €
Estimated fee impact1,655 €
Projected final value (nominal)100,001 €
Projected final value (today's money)74,302 €

Portfolio path vs target

Yearly points from a month-by-month simulation

03691215
PortfolioContributed capitalGrowthTarget

Hover a line point to inspect yearly amounts.

Contributions vs growth

Yearly timeline snapshot

YearMonthPortfolio valueCumulative contributionsCumulative growth
0.000 €0 €0 €
1.0123,741 €3,613 €127 €
2.0247,773 €7,227 €547 €
3.03612,120 €10,840 €1,280 €
4.04816,806 €14,453 €2,353 €
5.06021,858 €18,066 €3,791 €
6.07227,303 €21,680 €5,624 €
7.08433,174 €25,293 €7,881 €
8.09639,502 €28,906 €10,596 €
9.010846,324 €32,520 €13,804 €
10.012053,678 €36,133 €17,545 €
11.013261,606 €39,746 €21,859 €
12.014470,152 €43,359 €26,792 €
13.015679,364 €46,973 €32,391 €
14.016889,295 €50,586 €38,709 €
15.0180100,001 €54,199 €45,802 €