Capital Gains Tax in Luxembourg: The 6-Month Rule, Main-Residence Exemption and Real Estate

Capital gains tax in Luxembourg is unusual: for privately held assets, many gains are simply not taxed once you cross a holding-period threshold. Instead of a flat, always-on capital gains tax, Luxembourg distinguishes short-term "speculative" gains, longer-term gains, and special cases such as your main residence and large shareholdings. Understanding these rules is the difference between an unexpected tax bill and a legitimately tax-free profit.

This guide covers capital gains tax in Luxembourg for 2026, for both securities and real estate.

> This is general information, not tax advice. Confirm your position with a qualified adviser before acting.

The core principle: speculative versus long-term

For assets held in your private wealth, the holding period is decisive.

• A gain on an asset held six months or less is a *speculative* gain, taxed at your ordinary progressive rate.
• A gain on an asset held more than six months is generally a long-term gain. For most securities this is tax-exempt; for real estate it is taxed at a reduced rate rather than exempt.

This split is why timing matters so much. Selling a share a few days after the six-month mark can turn a taxable gain into a tax-free one.

The €500 speculative threshold

If your total speculative gains for the year stay below €500, they are exempt. Once you exceed that amount, the whole gain becomes taxable.

Securities: shares, funds and bonds

For listed shares, funds and similar securities held privately:

• Held six months or less: speculative, fully taxable at your marginal rate plus the solidarity surcharge.
• Held over six months: the gain is exempt — unless you hold a major holding.

The major-holding rule

If you own a substantial participation — broadly more than 10% of a company's share capital at any time in the five years before disposal — a gain remains taxable even after six months. However, it is then taxed at the half-global rate (roughly half your average rate), and a personal allowance of up to €50,000 (doubled for class 2, over a ten-year period) can shelter part of the gain.

Real estate

Property gains follow a related but distinct logic.

• Held two years or less: the gain is speculative and taxed at your full progressive rate.
• Held more than two years: the gain is long-term and taxed at the half-global rate, with acquisition costs indexed for inflation to reduce the taxable amount.

The main-residence exemption

The most important relief for households: the gain on the sale of your main residence (your actual principal home) is fully exempt, regardless of how long you owned it. This makes moving home tax-neutral for most families. Second homes and rental property do not qualify and follow the two-year rule above.

Capital gains at a glance

Worked examples

Securities. You buy €20,000 of an ETF and sell it 8 months later for €24,000. Held over six months and not a major holding, the €4,000 gain is exempt. Had you sold at month 5, the €4,000 would be added to your income and taxed at your marginal rate.

Real estate. You bought a rental flat for €300,000 and sell it four years later for €400,000. Because you held it over two years, the €100,000 gain (reduced by indexed costs) is taxed at the half-global rate, not your full rate — a meaningful saving versus the short-term treatment. Sell the same flat within two years and the whole gain is taxed at your full progressive rate.

To project the after-tax return on an investment before you sell, run the numbers below.

👉 Calculate your investment return

Frequently Asked Questions

Are gains on shares held over six months really tax-free? For privately held securities without a major holding, yes — the long-term gain is exempt. The main exceptions are substantial participations above 10% and assets that form part of a business.

Do I pay capital gains tax when I sell my own home? No. The gain on your main residence is fully exempt in Luxembourg, regardless of the holding period. The exemption does not extend to second homes or buy-to-let property.

How is a real-estate gain reduced for inflation? For property held more than two years, the acquisition price and improvement costs are revalued using official indexation coefficients, lowering the taxable gain before the half-global rate is applied.