Corporate tax in Luxembourg

Statutory seat and central administration are alternative tests

Article 159 treats the listed collective entities as resident when their statutory seat or central administration is in Luxembourg. A foreign incorporation certificate therefore does not answer the residence question. A Luxembourg-resident company is generally within worldwide profit taxation, while nonresident entities can have domestic permanent-establishment and source-income exposure.

For an operating business, document where management actually occurs and who has authority over contracts, banking, budgets and commercial risks. Immigration permission for a director, a business permit, corporate tax residence and treaty residence are separate tests. A genuine local operation needs arrangements that work together across all of them.

Treaties may exempt foreign establishment income or resolve competing residence claims, but the result depends on the treaty text and actual facts. The analysis should map each place where people work, sell and bind the business rather than treating a registered office as the only relevant location.

Calculate national and municipal corporate tax separately

The current corporate income-tax tariff is 14% for taxable income not exceeding €175,000. Between €175,000 and €200,000 the transitional formula is €24,500 plus 30% of the excess above €175,000. Above €200,000 the main rate is 16%. The 7% employment-fund supplement is levied on this corporate income tax, rather than on the entire profit a second time.

Municipal business tax adds another layer. The ACD’s Luxembourg City example uses 3% multiplied by the city’s 225% coefficient, producing 6.75%; combined with 16% and 1.12%, the nominal total is 23.87%. Other municipalities must be checked individually. Taxable bases, adjustments, special regimes and annual wealth tax can make an actual bill differ from that nominal comparison.

For illustration, €1 million of ordinary taxable corporate profit in Luxembourg City, with identical bases and no relief or other adjustment, produces €160,000 national CIT, €11,200 employment-fund supplement and €67,500 municipal business tax: €238,700. This excludes net-wealth tax and any tax when profits are distributed to shareholders. The example is not a quoted cost for a structure.

Profit, deductions, losses and intercompany financing

The company’s accounts are the starting point, followed by tax adjustments. Business purpose, evidence and the relationship to taxable or exempt income matter for deductibility. A payment to a connected person is not deductible simply because an invoice exists, and expenditure connected to exempt participation income can be restricted.

Articles 56 and 56bis require the arm’s-length analysis of related-party dealings. Document the actual functions, assets and risks, select a defensible method and ensure that conduct matches the contracts. Management fees, financing, intellectual property and founder remuneration deserve particular attention in a group with teams across countries.

Article 168bis generally limits net borrowing costs using the higher of 30% of tax EBITDA or €3 million, with defined exclusions and special rules. The base is tax EBITDA, not an unadjusted accounting metric. Article 168ter adds anti-hybrid rules. Loss carryforwards depend on the period of origin and statutory conditions; this guide does not assume a general carryback or unlimited portability into a newly reorganised entity.

A holding company’s exemptions have entry conditions

Article 166 can exempt qualifying participation income where an eligible recipient holds, or commits to hold, an eligible direct participation for at least twelve uninterrupted months and maintains at least 10% ownership or an acquisition cost of at least €1.2 million. Both the parent and subsidiary must meet the entity and taxation tests. The rule is not a general zero-tax label attached to any Luxembourg company.

The comparable-foreign-tax test needs a comparable base as well as a rate analysis. The ACD currently explains an 8% reference following the 16% domestic CIT rate from 2025. This must not be confused with the separate CFC calculation. The exemption has anti-abuse and hybrid-payment limitations, and associated expenses can be nondeductible.

Capital-gain exemptions, dividend withholding exemptions and wealth-tax participation relief have their own provisions. Qualifying for one does not establish the others. Before a sale or distribution, check holding periods, the exact interest, acquisition cost, recipient status and any earlier deducted impairment or expense. A treaty entitlement also depends on its own anti-abuse and beneficial-ownership conditions.

CFC rules: control, tax comparison and the functions creating income

Article 164ter applies to resident collective entities and domestic establishments of nonresident collective entities. A foreign company can be controlled where the taxpayer alone or with associated enterprises holds more than 50% of voting rights, capital or profit entitlement. A relevant exempt foreign permanent establishment can also be in scope. This is not just a list of countries labelled high or low tax.

The foreign actual tax must be less than the difference between the hypothetical Luxembourg corporate income tax and that actual foreign tax. Algebraically, that is a less-than-half comparison on the relevant Luxembourg calculation; comparing headline statutory rates alone is insufficient. The law excludes a CFC with commercial-accounting profit no more than €750,000 OR profit no more than 10% of specified operating costs. Certain foreign cost-of-goods and associated-enterprise payments are excluded from that operating-cost calculation.

Income inclusion targets undistributed income from non-genuine arrangements established essentially for a tax advantage, linked to significant functions performed by the controlling Luxembourg taxpayer. Attribution is limited to the relevant functions/assets/risks and follows arm’s-length principles. The rules include proportionality, foreign-tax relief and adjustments against double counting later distributions or disposals. The practical file therefore needs ownership data, foreign financials and tax, and evidence of where the income-producing decisions really happen.

Outbound dividends, interest and royalties

The domestic starting point for an ordinary dividend is 15% withholding on the gross distribution. A qualifying parent-subsidiary exemption or treaty can change that result, but the payer needs evidence and the correct procedure. If normal withholding was taken, the ACD describes a refund route and a general deadline of 31 December of the following year, unless the treaty provides a more favourable period.

Ordinary interest paid to nonresidents generally has no Luxembourg withholding. Profit-participating debt can fall into a different category: the ACD identifies interest carrying both a fixed return and an additional amount linked to distributed profit. Similarly, a payment described as interest may need reclassification under its actual terms. The resident-individual 20% savings levy is a different regime.

Domestic royalty withholding was abolished from 1 January 2004, and the ACD confirms that outbound royalties to a resident of the other state are not subject to it. This is a withholding statement, not a promise of deductibility, treaty access or no tax in the recipient’s country. Directors’ fees and performance income have separate withholding regimes and should not be placed in a royalty or interest column.

Net-wealth tax is an additional annual obligation

Opaque companies can face net-wealth tax separately from tax on profits. The normal tariff is 0.5% on taxable wealth up to €500 million and €2.5 million plus 0.05% on the excess. Taxable net wealth is not identical to the cash balance or gross balance-sheet total; valuation, debts, treaty treatment and qualifying exemptions must be analysed.

From 2025, the resident minimum is based on balance-sheet total: €535 at no more than €350,000; €1,605 above €350,000 and up to €2 million; and €4,815 above €2 million. The older 90%-financial-assets test and seven-band table still appear on the authority’s page for historical years. They should not be copied into a 2026 forecast.

An owner should therefore model a low-profit or exempt-dividend year as well as a strong trading year. A low income-tax result does not by itself imply that annual corporate tax and administration disappear.

Moving assets or management can crystallise a charge

Article 38 treats specified transfers abroad of business assets, a business or permanent establishment as a disposal where Luxembourg loses the relevant taxing right. Corporate migration is also addressed in article 172. The review must identify which assets remain connected with a Luxembourg establishment and which genuinely leave its tax jurisdiction.

Transfers within a group, relocation of central administration, an intellectual-property migration and a founder’s personal move are different events. Reconstruct the tax basis, value, relevant dates and any available payment or deferral mechanism before implementing them. Deferral is a payment issue with conditions, not an exemption. This guide identifies the statutory charge but does not promise a universal five-year instalment entitlement for every destination.

VAT and payroll belong in the operating design

The current standard VAT rate is 17%, with 14%, 8% and 3% categories for specified supplies. The temporary 2023 rate reductions are not the 2026 rates. Determine the customer, place of supply, goods versus services, exemptions, reverse charge and registration obligations before writing invoice templates. A company with foreign clients is not automatically outside Luxembourg VAT.

Hiring creates employee tax withholding, CCSS affiliation and contribution reporting, alongside employment-law duties. The 2026 pension and June contribution-cap changes matter to the budget. Accident, employers’ mutual insurance and occupational-health charges depend on the employer’s facts, so a universal employer-cost multiplier would conceal real differences. The employment guide separates these inputs.

Assign an owner to every filing and evidence trail

Model 500 covers corporate income tax, municipal business tax and net-wealth tax, with the ordinary return due by 31 December of the year following the relevant tax year. The ACD calendar separately governs advance payments and withholding returns. VAT, payroll and corporate registry obligations do not wait for one annual income-tax deadline.

A working compliance file should reconcile statutory accounts to taxable profit, participation schedules, intercompany transactions, financing, foreign establishments, CFC assessments, withholding certificates and payroll/VAT records. Changes to ownership, activity, management location or business premises should trigger review rather than waiting for the next renewal.

We can assess how Luxembourg fits the wider group, document the recommended structure and coordinate agreed implementation with the appropriate providers. Where independent management is needed, the scope involves assessing and connecting with external providers; it is not a claim that we supply directors or management internally.