Tax Guide Luxembourg 2026: What Every Investor Needs to Know

Last updated: 6 September 2026

Luxembourg can be remarkably attractive for patient private investors, but it is not a blanket low-tax country. A resident individual’s gain on shares, bonds or fund units held for more than six months is generally exempt when the investment is not a substantial participation. Sell within six months, however, and the gain can be taxed at ordinary progressive rates. Salary, many dividends and investment income can face a top personal income-tax rate of 42%, increased by the employment fund surcharge.

The distinction between exempt long-term gains and taxable income is therefore central. So are the rules for substantial shareholdings, the 20% final tax on qualifying interest and the fact that an ETF distribution does not automatically receive the favourable treatment available to certain company dividends.

This guide explains the Luxembourg rules applicable in 2026 for employees, private investors, freelancers and internationally mobile individuals. It reflects information available on 6 September 2026 and uses official Luxembourg sources wherever possible.

Tax Overview — Key Numbers at a Glance

Tax type	2026 rate or rule	Key point
Personal income tax	0%–42%	Progressive scale; the employment fund surcharge normally increases calculated tax by 7%, or 9% at higher incomes
Maximum income-tax rate including surcharge	45.78%	42% × 1.09; the separate 1.4% dependency contribution can also apply to relevant income
Private securities gains	Usually 0% after more than 6 months	Applies to non-substantial private holdings; short-term and substantial-participation rules differ
Short-term securities gains	Progressive rates	Applies where the holding period is six months or less; annual net gains below €500 are exempt
Long-term gain on a substantial participation	Half the taxpayer’s overall rate	A participation is generally substantial at more than 10%; special allowance may apply
Luxembourg dividend withholding tax	15%	Normally an advance payment, not necessarily the final liability
Qualifying dividend exemption	50%	Only 50% of an eligible company dividend enters the tax base; not automatic for every fund distribution
Qualifying interest	20% final withholding tax	RELIBI generally applies through a Luxembourg paying agent; other interest may require assessment
Standard VAT	17%	Reduced rates are 14%, 8% and 3%
Employee pension contribution	8.5%	Increased from 8% in 2026; contribution ceiling applies
Employee sickness contribution	2.8%	Contribution ceiling applies; an additional 0.25% cash-benefit component may apply
Dependency contribution	1.4%	Different base rules apply; also reaches taxable portfolio income and gains, with exceptions
Corporate income tax	16%	For taxable income above €200,000; 23.87% combined in Luxembourg City
Individual net wealth tax	None	Luxembourg companies may instead be subject to net wealth tax
Tax year	Calendar year	1 January–31 December
Individual return deadline	31 December of the following year	A 2025 Form 100 is due by 31 December 2026
Tax authority	ACD	Administration des contributions directes

Tax Residency in Luxembourg

A Luxembourg resident is generally taxable on worldwide income. A non-resident is normally taxable only on Luxembourg-source income, subject to domestic law and any applicable double tax treaty.

Residence is not determined by citizenship. An individual is generally resident if they have either:

• a tax domicile in Luxembourg — a permanent home they intend to retain; or
• a habitual abode in Luxembourg.

A continuous stay of more than six months normally creates a habitual abode. Short interruptions are generally ignored when measuring continuity, so repeatedly leaving the country for weekends does not necessarily prevent residence.

Someone can be resident under the domestic rules of two countries at once. A tax treaty then usually resolves dual residence by considering, in sequence, the permanent home, centre of vital interests, habitual abode and nationality. The result matters because it determines which country treats the person as a resident for treaty purposes and how double taxation is relieved.

Cross-border workers need particular care. Working in Luxembourg does not by itself make someone Luxembourg-resident, but Luxembourg can tax salary connected with work physically performed there. Days worked from home in Belgium, France, Germany or another country may affect the allocation of taxing rights under the relevant treaty and social-security rules.

Personal Income Tax

Luxembourg applies a progressive schedule. For 2026, taxable income up to €13,230 is taxed at 0%; rates then begin at 8% and increase through numerous narrow bands to 42% above €234,870. The calculation should be checked with the tax administration’s official tax scales and calculator.

Useful points on the Class 1 schedule are:

Taxable income	Marginal statutory rate
Up to €13,230	0%
€13,230–€15,435	8%
€24,255–€26,550	14%
€35,730–€38,025	24%
€54,090–€117,450	39%
€117,450–€176,160	40%
€176,160–€234,870	41%
Above €234,870	42%

These are marginal rates: reaching a higher bracket does not cause the whole income to be taxed at that rate.

Employment fund surcharge

The employment fund surcharge is calculated on the income tax itself, rather than directly on taxable income. It is generally 7%. It rises to 9% where taxable income exceeds €150,000 for Classes 1 and 1a or €300,000 for Class 2. The maximum 42% rate therefore becomes 45.78% after a 9% surcharge.

The 1.4% dependency contribution is separate. It should not be confused with the employment fund surcharge, and its base is not identical to taxable income.

Tax classes

The current system has three principal classes:

• Class 1: most single taxpayers;
• Class 1a: certain single parents, widowed taxpayers and taxpayers aged at least 65; and
• Class 2: qualifying married couples and civil partners.

Tax class can materially affect the result, particularly for couples with unequal earnings. A reform replacing these classes with individual taxation has been proposed for 2028, but it is not part of the 2026 rules.

Deductions and credits

Potential deductions include compulsory social-security contributions, qualifying pension contributions, certain insurance premiums, qualifying debt interest and other special expenses, subject to conditions and caps. Tax credits may also depend on employment, pension, self-employment, income and family circumstances. Payroll withholding is only a prepayment: it does not always equal the final annual liability.

Example: €60,000 salary

A single Class 1 employee earning €60,000 does not pay 39% on the full salary. Social contributions and allowable deductions reduce the tax base, after which the progressive bands are applied and the employment fund surcharge is added. The final net amount depends on benefits, deductions, payroll settings and family circumstances; a generic calculator should therefore be treated as an estimate rather than a filing result.

Social Security Contributions

From 1 January 2026, the total pension contribution increased from 24% to 25.5%, divided equally between employee, employer and the state. The employee and employer pension shares are therefore 8.5% each.

For employees, the main compulsory components include:

Employee component	2026 rate	Base note
Pension insurance	8.5%	Gross remuneration, capped at €13,856.63 per month
Sickness insurance	2.8%	Gross periodic remuneration, same monthly ceiling
Cash benefits	Generally 0.25%	Depends on the remuneration category
Dependency insurance	1.4%	No ordinary social-security ceiling; professional-income base is reduced by €692.83 per month in 2026

The employer pays corresponding pension and health components and may also bear accident insurance, employers’ mutuality and occupational-health costs. Consequently, employer cost is higher than gross salary, but there is no single universally correct employer percentage.

The official CCSS social parameters confirm the 2026 rates and the €13,856.63 monthly ceiling applicable after the June indexation. Taxable net portfolio income and taxable capital gains of residents can also face the 1.4% dependency contribution, except interest covered by the final 20% withholding regime.

Capital Gains on Shares, Bonds and ETFs

Luxembourg’s private-investor rules are driven by two questions:

1. Was the asset held for more than six months?
2. Is the holding a substantial participation?

Non-substantial holdings

Under the official Guichet.lu securities guidance, for a private holding that is not substantial:

• a gain realised within six months of acquisition is speculative income and taxable at progressive rates; and
• a gain realised after more than six months is generally exempt.

This is a holding-period exemption, not a tax-free investment account. Accurate acquisition dates are therefore essential. A sale exactly six months after purchase should not be casually treated as satisfying the “more than six months” condition.

Under the official ACD/Guichet explanation of securities disposals, short-term gains can reach ordinary progressive rates, plus the applicable surcharge and dependency contribution. If total relevant gains for the calendar year are below €500, they are not taxable. This threshold concerns gains, not sale proceeds.

Substantial participations

A participation is generally substantial when the taxpayer—alone or together with a spouse or partner and minor children—directly or indirectly held more than 10% of a company at any point during the five years preceding disposal. The test is also explained in the government’s share-transfer guidance.

Long-term gains on a substantial participation remain taxable even after six months. They are generally taxed at half the taxpayer’s overall rate, plus the dependency contribution where applicable. A €50,000 allowance may be available, doubled to €100,000 for jointly assessed spouses or partners, but it is restricted across a ten-year period and requires case-specific calculation.

The test is not merely whether the investor owns more than 10% on the sale date. Past ownership within the five-year lookback and connected family holdings can change the answer.

Capital losses

Losses from taxable private disposals can generally offset gains of the same relevant category in the same year. They cannot normally be used against salary, dividends or other ordinary income, and unused private capital losses are not generally carried forward.

An economically real loss on a long-term, non-substantial holding is outside the taxable category in the same way as an exempt gain. It therefore does not create a general tax deduction.

Cost basis and records

Investors should retain contract notes and statements showing acquisition date, disposal date, quantity, price, transaction fees, corporate actions and any foreign-currency conversion. For foreign-currency investments, each relevant amount must be translated into euros using a defensible exchange rate for the transaction date. A broker’s gain figure in dollars or pounds is not automatically the Luxembourg taxable figure.

ETFs and Investment Funds

For a private investor, selling ETF or fund units generally follows the same six-month capital-gains logic as other securities. Luxembourg does not apply a general annual deemed-disposal tax to an ordinary resident merely because an accumulating ETF retains income inside the fund.

That does not mean accumulating and distributing funds are identical:

• Accumulating fund: retained income is ordinarily reflected in the unit value; the investor generally considers Luxembourg tax when units are disposed of, subject to the holding-period and participation rules.
• Distributing fund: cash distributions are normally taxable movable income in the year received.

The 50% exemption for qualifying company dividends should not automatically be applied to an ETF distribution. A fund distribution must be classified using the fund’s legal form, tax status and documentation. UCITS status alone does not prove that a distribution qualifies for the dividend exemption.

This distinction is especially important for investors importing an annual statement from a foreign broker: labels such as “dividend” in the broker interface are not conclusive under Luxembourg tax law.

Dividends

Luxembourg-company dividends paid to individuals are generally subject to 15% withholding tax. For a Luxembourg resident, that withholding is normally an advance credit against the final income-tax liability, not a universal final tax.

Qualifying dividends can benefit from a 50% exemption. Broadly, this can cover dividends from a fully taxable Luxembourg capital company, a qualifying EU company, or a company resident in a treaty country and subject to a tax comparable to Luxembourg corporate income tax. The official dividend guidance explains the conditions and reporting treatment.

Where the exemption applies, 50% of the gross dividend enters the tax base. Related deductible expenses are correspondingly limited. The result is not simply a flat 7.5% tax: the taxable half is charged at the investor’s progressive rate, and any creditable withholding is then taken into account.

Foreign dividends must generally be declared gross. Relief for foreign withholding depends on the applicable treaty and Luxembourg foreign-tax-credit rules. If the source country withheld more than its treaty rate, the excess usually has to be reclaimed from that country rather than credited without limit in Luxembourg.

An annual allowance of €1,500 for qualifying movable income and certain interest is generally available, or €3,000 for jointly assessed couples. It is shared across relevant income categories rather than renewed for every account.

Interest Income

The original version’s description of all interest as progressively taxed was incomplete. Luxembourg has a final withholding regime known as RELIBI.

A Luxembourg paying agent generally withholds 20% from qualifying interest paid to a Luxembourg-resident individual. This withholding discharges the income-tax liability, so the interest is normally not added to progressively taxed income. The ACD’s RELIBI guidance also describes an optional 20% treatment for certain qualifying interest received through paying agents in another EU or EEA state.

Interest outside that regime may have to be declared and taxed at progressive rates. The classification depends on the account, instrument, payer and amount. For example, exemptions or thresholds can apply to certain current and savings accounts, while bond interest commonly falls within RELIBI.

From 2026, interest on qualifying sovereign bonds can benefit from a specific exemption when the statutory conditions are met. Investors should verify the issue itself rather than assume that every government or public-sector bond qualifies.

Cryptocurrency

Luxembourg generally applies its private speculative-gain framework to cryptoassets; taxpayers should also consult the tax administration’s virtual-currency circular:

• gains on disposals within six months can be taxable at progressive rates;
• gains after more than six months may be exempt where the activity remains private wealth management; and
• the €500 annual threshold for speculative gains can be relevant.

A crypto-to-crypto exchange can be a disposal even if no euros enter the bank account. Payment for goods, conversion into a stablecoin and other transfers of economic ownership can also crystallise a result.

Frequent, organised or commercially run trading may be classified as business activity rather than private portfolio management. Mining, staking rewards, employment tokens and business receipts also require separate analysis; the six-month exemption should not be extended to them automatically.

EU DAC8 reporting rules began applying from 2026, with first reporting generally following under the implementation timetable. Investors should assume that regulated providers will increasingly transmit identifying and transaction data and retain full wallet and exchange records.

Employment, Freelancing and Business Income

Salary for work performed in Luxembourg is subject to payroll withholding and employee social contributions. Benefits in kind — including some housing, car and equity benefits — can be taxable. An annual return or adjustment may still be necessary even where tax was withheld monthly.

A genuine freelancer or sole trader is taxed personally on net business or professional profit. Deductible costs must be connected with earning that income and properly documented. Depending on the activity and turnover, VAT registration, municipal business tax and self-employed social-security contributions may also apply.

Calling a relationship “freelance” does not control its tax treatment. If the facts resemble employment — dependence on one client, supervision, fixed hours and limited business risk — Luxembourg authorities may reclassify it.

Impatriate regime

Qualifying employees recruited or assigned from abroad can benefit from the impatriate regime. Under the regime applicable since 2025, 50% of eligible gross annual remuneration is exempt, applied to remuneration capped at €400,000 — a maximum exemption of €200,000 a year.

This is not an automatic expat discount. The employee and employer must satisfy detailed conditions concerning prior residence, recruitment or assignment, qualifications, Luxembourg employment and remuneration, and the employer has annual reporting duties. The official impatriate guidance should be checked before payroll applies the relief.

Corporate Income Tax

From tax year 2025 onward, Luxembourg corporate income tax is 14% for taxable income below €175,000 and 16% above €200,000, with a transition formula between those amounts. A 7% solidarity surcharge applies to the corporate income tax.

Companies can also owe municipal business tax. In Luxembourg City, the municipal rate is 6.75%, producing a combined headline rate of approximately 23.87% for a company above €200,000 of taxable income. Rates differ by commune. The corporate income-tax rate and filing framework are explained in the official Guichet.lu corporate-tax guidance.

Companies may additionally face net wealth tax and minimum net wealth tax. A company should not be created solely on the assumption that its 16% headline CIT rate will be lower than personal tax: salary, dividend extraction, accounting, social contributions and anti-abuse rules change the comparison.

VAT

Luxembourg’s standard VAT rate is 17%. Reduced rates are:

• 14% intermediate rate;
• 8% reduced rate; and
• 3% super-reduced rate.

The applicable rate depends on the specific supply. Cross-border digital services, e-commerce, property and financial services have special place-of-supply or exemption rules. A freelancer serving clients abroad should therefore determine where VAT is due rather than applying 17% by default.

Property and Rental Income

Luxembourg real estate is subject to commune-level property tax. The amount depends on the unit value, municipal assessment and local rate, so there is no single nationwide percentage that accurately describes the annual charge.

Net rental income is generally taxed at progressive personal rates. Deductible items may include qualifying financing costs, maintenance and depreciation, subject to detailed rules. From 2026, a special 10% depreciation rate can apply to qualifying sustainable-energy renovation expenditure completed less than nine years before the beginning of the tax year.

Private real-estate gains follow rules different from the six-month securities rule. A disposal within two years can be treated as a speculative gain and taxed at ordinary rates; a gain after more than two years generally receives different long-term treatment. Relief may be available for a principal residence and, in appropriate cases, a periodic allowance. Property transactions warrant a separate calculation because acquisition costs, improvement expenditure and revaluation rules can materially change the gain.

Inheritance, Gifts and Wealth Tax

Luxembourg has no annual net wealth tax for individuals. That should not be confused with the corporate net wealth tax administered by the ACD.

Inheritance tax depends on the deceased’s residence, the location of assets, the heir’s relationship to the deceased and whether the transfer exceeds the heir’s statutory share. Direct-line heirs can be exempt on the statutory portion, while amounts beyond it can be taxed. Treatment for spouses or registered partners and more distant beneficiaries differs, and progressive surcharges can increase the base rates as the inherited share grows.

Gift tax is closely connected with registration and notarial rules. Rates vary with the relationship and type of transfer. An informal lifetime transfer and a registered gift do not necessarily produce the same result.

Cross-border estates require particular care because Luxembourg inheritance tax, foreign estate or inheritance tax, forced-heirship law and the situs of property may all interact. The absence of individual wealth tax does not make inheritance tax irrelevant.

Tax-Advantaged Saving and Investment

Luxembourg does not offer a general retail wrapper directly equivalent to a UK ISA. The principal advantage for an ordinary private securities portfolio is instead the exemption for qualifying non-substantial holdings kept for more than six months.

Tax relief may be available for qualifying personal-pension contracts and certain insurance products, within statutory conditions and deduction limits. Product fees, lock-up periods, insurance taxation and investment choices should be weighed against any deduction. A tax deduction alone does not make a product a good investment.

Reporting Foreign Investments

Luxembourg residents must generally report taxable worldwide investment income whether the broker is in Luxembourg or abroad. A foreign broker does not remove the Luxembourg tax obligation and may not classify transactions under Luxembourg rules.

Prepare the return from source records rather than a single “tax summary.” Keep:

• annual account statements and individual trade confirmations;
• dates and costs for every acquisition and disposal;
• dividend and fund-distribution vouchers;
• gross interest and withholding-tax statements;
• evidence of foreign tax paid;
• corporate-action records;
• euro exchange rates and the method used; and
• evidence supporting the more-than-six-month holding period.

Automatic exchange systems such as CRS, FATCA and DAC8 make foreign accounts increasingly visible. They do not calculate the correct Luxembourg liability for the taxpayer.

How to File a Luxembourg Tax Return

The standard individual income-tax return is Form 100. Filing is available electronically through MyGuichet.lu, using the downloadable PDF, or by post where applicable.

Practical filing process

1. Collect salary certificates, pension documents, bank and broker statements, foreign-income records and deductible-expense evidence.
2. Separate exempt long-term disposals from short-term taxable disposals and substantial participations.
3. Classify dividends, fund distributions and interest correctly; record gross income and any Luxembourg or foreign withholding.
4. Convert foreign-currency amounts consistently into euros.
5. Complete Form 100 and the relevant schedules, then submit it by the statutory deadline.
6. Review the assessment notice and pay any balance by the date stated on it, or challenge errors within the applicable appeal period.

Not every taxpayer is required to file Form 100. Filing obligations depend on the amount and type of income, multiple employments or pensions, tax class and other circumstances. Some people who are not required to file can request an annual adjustment or file voluntarily to claim deductions or refunds.

The official Form 100 filing guidance sets 31 December of the following year as the deadline. Accordingly, the 2025 return is due by 31 December 2026. Do not assume an informal extension beyond that date.

Common Mistakes to Avoid

• Treating every gain after six calendar months as exempt without checking that the period is more than six months.
• Looking only at ownership on the sale date and overlooking the five-year substantial-participation test.
• Applying the 50% company-dividend exemption automatically to ETF or fund distributions.
• Reporting only net foreign dividends instead of gross income and withholding separately.
• Assuming all interest is progressively taxed and missing the 20% final RELIBI regime.
• Using a broker’s base-currency profit without converting each relevant amount to euros.
• Deducting losses on exempt long-term holdings from salary or dividend income.
• Believing foreign brokers or crypto exchanges make Luxembourg reporting optional.
• Confusing the individual absence of wealth tax with the corporate net wealth tax.
• Treating payroll withholding as proof that no return or annual adjustment is needed.

Key 2026 Dates

Item	Date
Tax year	1 January–31 December 2026
2025 Form 100 deadline	31 December 2026
2026 Form 100 deadline	31 December 2027
Employer impatriate list	Generally by 31 January following the relevant year/process requirements
Assessment payment	Date stated on the ACD assessment notice

Related Finorum Guides and Calculators

• Investing in Luxembourg
• Luxembourg net salary calculator
• Luxembourg capital gains tax calculator
• ETF tax calculator
• Dividend tax calculator
• EU tax comparison map
• Cost of living comparison

Bottom Line

Luxembourg is especially favourable to a private investor who holds a diversified, non-substantial securities portfolio for more than six months. That advantage does not extend automatically to salary, dividends, distributions, interest, short-term trading, large shareholdings or business activity.

For most investors, the decisive habits are simple: document acquisition dates, distinguish company dividends from fund distributions, identify whether interest is covered by RELIBI, track foreign withholding and retain euro-based records. Those steps prevent the six-month exemption from being undermined by poor classification or missing evidence.

Disclaimer

This guide is for general educational information and does not constitute tax, legal, accounting or investment advice. Luxembourg tax treatment depends on residence, tax class, family circumstances, the legal form of each investment and applicable treaties. Rules and administrative practice can change. Confirm material decisions with the Administration des contributions directes or a qualified Luxembourg tax adviser.

Sources & References

EU regulations & taxation

• Guichet.public.lu — Luxembourg dividend withholding tax
• official Guichet.lu corporate-tax guidance
• Impotsdirects.public.lu — official tax scales and calculator

Additional educational resources

• Ccss.public.lu — official CCSS social parameters
• Guichet.public.lu — Luxembourg resident
• Luxembourg’s standard VAT rate
• official ACD/Guichet explanation of securities disposals
• official dividend guidance
• official Form 100 filing guidance
• official impatriate guidance
• share-transfer guidance
• Impotsdirects.public.lu — ACD
• ACD
• ACD’s RELIBI guidance
• virtual-currency circular