Insights & analysis

Insights: understanding Luxembourg fiduciary, tax and structures

Clear, factual analysis on accounting, tax, company formation, holdings and funds in Luxembourg, by a licensed accounting firm (auth. 10077274). Three clearly separated content types: dated analysis, maintained reference guides, and service pages.

Dated analysis

Company setup

Conversion of legal form in Luxembourg: SARL to SA

Converting the legal form of a Luxembourg company does not dissolve it and does not create a new legal person: the RCS number, the contracts and the loss carry-forwards survive. What kills the operation is a missing report or a stale asset and liability statement.

Tax

Tax classes in Luxembourg: 2026 scale and the class U

Tax classes in Luxembourg govern how the scale is applied, not the scale itself: on an identical income, the gap between class 1 and class 2 comes from the computation method alone. The tariff did not move in 2026, and the single class U goes to the vote on 27 October 2026.

Tax

Housing VAT in Luxembourg: the 3% rate and approval

Housing VAT in Luxembourg brings creation and renovation works down to 3% where the dwelling serves as a main residence, capped at EUR 50,000 per dwelling. Approval must be filed before works start: after that, only the refund route is left.

Compliance

Tax statute of limitations in Luxembourg: 5 and 10 years

The tax statute of limitations in Luxembourg is five years, never less than ten where an additional assessment follows an incomplete or inaccurate return. Records, however, must be kept ten years: that asymmetry is the real issue.

Accounting

Shareholder current account in Luxembourg: the rules

A shareholder current account in Luxembourg is neither a capital contribution nor a dividend: it is a debt or a receivable that must carry arm's length interest and be split by maturity. Two rules govern it: article 164(3) L.I.R. and the 15/85 debt ratio.

Accounting

Depreciation useful lives in Luxembourg: tax rules

Depreciation useful lives in Luxembourg are set by no legal table: the business determines each asset's usual useful life, and the tax balance sheet must follow the commercial one. Declining balance stays capped at 30 %.

Payroll & HR

Meal vouchers in Luxembourg and benefits in kind

Meal vouchers in Luxembourg are exempt up to EUR 12.20 per voucher since tax year 2024, for a face value of EUR 15. The employee contribution still has to be withheld, and each voucher attached to a day actually worked.

Payroll & HR

Company car benefit in kind in Luxembourg: rates

Company car benefit in kind in Luxembourg is computed on the new vehicle value, never on the leasing rent. Three rate grids coexist, and the date that separates them is not the contract date.

Tax

Investment tax credit Luxembourg: 12% or 18% rates

The investment tax credit in Luxembourg reduces the tax bill itself, not the taxable base: 12% of acquisition value since tax year 2024. A certified digital transformation or ecological transition project lifts the rate to 18%.

Payroll & HR

Retirement in Luxembourg: conditions and calculation

Retirement in Luxembourg opens at 65 after 120 months of insurance, with two early routes at 60 and 57. The reform voted on 18 December 2025 lengthens the qualifying period and creates a progressive pension.

Analysis archive

Reference guides

Related services

Our expertise hubs

02

Accounting, accounts & closing

LuxGAAP bookkeeping, reconciliations, closing work, annual accounts, eCDF validation and RCS filing. For SARL, SARL-S, SA, holdings, SOPARFI, SMEs and groups.

03

Tax, VAT & payroll

Tax returns, VAT, payroll and tax incentives, on time, at the right rate.

06

Investment funds

Structuring a fund and keeping its books: RAIF, SIF, SICAR, SCSp, valuation inputs, AIFM support.

08

Regulatory compliance

AML/KYC, DAC6, CRS/FATCA, ESG/CSRD, MiCA: staying compliant in a demanding framework.

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