Investment · Compound Growth

Investment Return Calculator

Project your Luxembourg investment portfolio growth with compound interest. Model initial investments, monthly contributions, and see the real (inflation-adjusted) value of your wealth.

Investment Parameters

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Enter your investment details to project growth

Disclaimer: Past performance is not a guarantee of future returns. Investment values can go down as well as up. This calculator uses compound interest projections and does not account for taxes on investment income, fund charges, or market volatility.

The Power of Compound Interest

Compound interest means you earn returns on both your original investment and the returns already generated. Over long periods, this creates exponential growth — often called the "eighth wonder of the world."

Luxembourg Investment Tax Overview

For individual investors in Luxembourg: interest and dividends face a 15% withholding tax. Capital gains on long-term holdings (6+ months) are generally exempt from income tax. This makes Luxembourg relatively favorable for buy-and-hold investors compared to some neighboring countries.

FAQ

What is a realistic investment return rate for Luxembourg investors?

Global equity index funds have historically returned 7–10% per year over long periods (before inflation). Luxembourg UCITS funds offer broad access to global markets. Conservative portfolios with bonds and equities might target 4–6% nominal returns.

How is investment income taxed in Luxembourg?

Interest income and dividends are generally subject to a 15% withholding tax in Luxembourg. Capital gains on shares held for less than 6 months are taxed as ordinary income. Gains on assets held longer than 6 months are generally exempt from Luxembourg income tax for individual investors.

What are popular investment options for Luxembourg residents?

Luxembourg-domiciled UCITS funds, ETFs through brokers, the Spuerkeess investment plan, and private pension schemes (plan d'épargne pension with up to €3,200/year tax deduction) are popular options.