Luxembourg payroll processing for employed persons.
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Built by Michael Cutajar and the OpenAccountants team. Written from the official sources it cites.
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Dependency contribution base note
The dependency contribution (1.40%, employee only) is levied on gross income after an abatement of 1/4 of the SSM and has no floor or ceiling — its base differs from every other branch. See Section 3.
Solidarity surcharge standard rate
7%Source: PwC Worldwide Tax Summaries
Solidarity surcharge step-up threshold and rate
9% where taxable income exceeds EUR 150,000 (tax classes 1 and 1a) or EUR 300,000 (tax class 2)Source: PwC Worldwide Tax Summaries
Top effective marginal rate
The surcharge funds the Fonds pour l'emploi. The top effective marginal rate is therefore approximately 45.78% (42% x 1.09).Source: PwC Worldwide Tax Summaries
No valid tax card rule
If no valid withholding tax card exists, the employer must apply the highest rate: tax class 1, at a rate that cannot be lower than 33%.Source: guichet.public.lu retenue-impot.
PAYE computation steps
1. Read the employee's tax class and any noted deductions/credits from the electronic tax card transmitted by the ACD. 2. Determine taxable income for the period (gross emoluments less the deductible employee social contributions and any card-noted deductions). 3. Look up the withholding from the ACD official monthly/daily withholding table (bareme) for that class; this implicitly applies the class scale (class 1 scale above) and adds the solidarity surcharge (7%, or 9% above the EUR 150,000 / 300,000 thresholds). 4. Offset the CIS / CISSM / CIM credits shown on the card. 5. If no valid card exists, withhold at class 1, minimum 33%.
Zero band as tax-free allowance
The 0% band (to EUR 13,230 for class 1) is the tax-free allowance — there is no separate personal allowance on top of it.
Combined employee deduction calc
Combined employee sickness rate = 2.80% + 0.25% = 3.05%. Total employee deduction (excluding tax) on income within the ceiling = 8.00% + 3.05% + 1.40% = ~12.45% (the 1.40% dependency portion is on a different, uncapped, post-abatement base).Source: CCSS Avis aux employeurs 17.01.2025.
No floor/ceiling on dependency
The dependency contribution has no minimum and no maximum ceiling — it applies to the full (post-abatement) income even above the 5 x SSM cap that limits the other branches.Source: CCSS Avis aux employeurs 17.01.2025; PwC LU Other taxes.
Indexation effective date rule
The 2.5% automatic wage indexation took effect 1 May 2025 (index moved 944.43 -> 968.04). Use the Jan 2025 set for Jan--Apr 2025 pay periods and the May 2025 set from May 2025 onward.Sources: CCSS Avis 17.01.2025; Orbitax (May 2025); WAT Fiduciary.
Employer exclusions
The employer does NOT pay the dependency (long-term care) contribution — that 1.40% is employee only. Private-sector employers do NOT pay the 1.70% family-benefits contribution.
Default bonus-malus factor
Use 0.700% with factor 1.00 as the default unless the employer's notified factor is known.Source: CCSS Avis aux employeurs 17.01.2025.
Class assignment
The actual class is assigned by the CCSS based on the employer's financial-absenteeism rate.Source: CCSS Avis aux employeurs 17.01.2025.
On-cost calculation
Pension 8.00% + Sickness 3.05% + Accident 0.700% + Occupational health 0.14% + MDE 0.99% = ~12.88% of gross within the ceiling (family benefits 1.70% is not included — it is public-sector only).
SSM index base and min contribution base
SSM = EUR 279.30 at index 100; cost-of-living index 944.43 at 01.01.2025, rising to 968.04 from 01.05.2025 (+2.5%). The minimum social-contribution base equals the SSM unskilled.Sources: CCSS Avis 17.01.2025; WAT Fiduciary (May 2025).
Accident insurance rate
0.700% (base, bonus-malus factor 1.00). Use the unadjusted base rate unless the employer's specific factor from the Accident Insurance Association is known.
Mutualite des Employeurs class
New/unrated employers are placed by CCSS into a class based on financial absenteeism; if unknown, model a mid class rather than assuming the lowest (0.07%). Replace with the employer's actual notified class.
Family benefits (prestations familiales) 1.70%
Apply only for PUBLIC-sector employers; for private-sector payroll set to 0% (state-funded).
Occupational health (sante au travail) 0.14%
Apply only if the private-sector employer uses the multi-sector occupational health service (STM); employers with their own/in-house or sector service may differ.
Which 2025 index / parameter set
Use the 1 Jan 2025 set (index 944.43; SSM 2,637.79; ceiling 13,188.96; abatement 659.45) for Jan--Apr 2025; the 1 May 2025 set (index 968.04; SSM 2,703.74; ceiling 13,518.68; abatement 675.94) from 1 May 2025.
Tax class
If the tax card is not available, do not guess — flag for the card. If no valid card exists, the employer must withhold at the least favourable basis (class 1, min 33%). Trigger R-LU-P-1.
Dependency base
Apply 1.40% on gross less the 1/4-SSM abatement with no floor or ceiling — do not apply the 5 x SSM cap to dependency.
Solidarity surcharge
7% of income tax due; step up to 9% only above EUR 150,000 (class 1/1a) or EUR 300,000 (class 2) taxable income.
Reliefs / deductions
Compute withholding on gross less only the deductible employee social contributions and card-noted items. Do not assume discretionary deductions.
R-LU-P-1 — No tax card
Trigger: the employee's tax class / fiche de retenue d'impot is not available. Message: "Wage withholding requires the employee's electronic tax card (fiche de retenue d'impot) data; without it the tax class and credits cannot be applied. Obtain the card data before running tax withholding — otherwise the employer must withhold at class 1, minimum 33%."
R-LU-P-2 — Self-employed / non-salaried
Trigger: the worker is self-employed (independant) or a company director not on a salary. Message: "Self-employed and non-salaried persons are not run through employer wage withholding; their social security and tax are handled separately. Use the Luxembourg income-tax / self-employed skill."
R-LU-P-3 — Cross-border / frontalier / posted worker
Trigger: a cross-border worker (frontalier), an A1/E101 certificate, or a totalisation question. Message: "Cross-border social security coordination (EU Reg. 883/2004, A1 certificates) and frontalier tax treatment require specialist advice."
R-LU-P-4 — Impatriate / expat regime
Trigger: a high-earner claiming the impatriate tax regime or the inpatriate premium. Message: "The Luxembourg impatriate regime and inpatriate premium have specific conditions and affect withholding; route through a Luxembourg reviewer."
R-LU-P-5 — Benefits in kind / equity
Trigger: company car, accommodation, stock options or other benefits in kind. Message: "Benefit-in-kind valuation (company car, housing, equity) affects taxable income and contributions; route through a Luxembourg reviewer."
R-LU-P-6 — Termination / severance
Trigger: severance, ex-gratia, or redundancy lump sum. Message: "Termination payments have specific tax and social treatment; do not run through standard wage withholding."
2025 income tax scale (tax class 1)
0% up to EUR 13,230, then progressive marginal rates 8% to 42%, with the top 42% rate from EUR 234,870 (post "Entlaaschtungs-Pak" +2.5 index-bracket adjustment of 1 Jan 2025)PwC Worldwide Tax Summaries.
Solidarity surcharge
7% of the income tax due, rising to 9% where taxable income exceeds EUR 150,000 (classes 1/1a) or EUR 300,000 (class 2). Top effective marginal rate ≈ 45.78%PwC.
Income tax withheld at source
Income tax is withheld at source (monthly PAYE) by the employer from the ACD official tables based on the employee's tax class (1, 1a, 2) and electronic tax card; the employer offsets the CIS, CISSM and CIM credits. If no valid card exists, withhold at class 1, minimum 33%.LIR; guichet.public.lu retenue-impot.
Pension contribution 2025
8.00% employee + 8.00% employer (+ 8.00% State = 24.00% total)CCSS Avis aux employeurs 17.01.2025.
Sickness/health 2025
in-kind 2.80% employee + 2.80% employer; cash-benefit majoration 0.25% employee + 0.25% employer (so 3.05% each side combined)CCSS Avis 17.01.2025.
Dependency (long-term care)
1.40% employee only (no employer share), on gross after an abatement of 1/4 of the SSM (EUR 659.45/month Jan 2025; EUR 675.94 from May 2025), with NO floor or ceilingCCSS Avis 17.01.2025; PwC LU Other taxes.
Accident insurance and occupational health
Accident insurance: base 0.700% employer only, adjusted by a bonus-malus factor (0.595% at 0.85 up to 1.050% at 1.50). Occupational health 0.14% employer only (private sector using STM).CCSS Avis 17.01.2025.
Family benefits (prestations familiales)
1.70% employer only, PUBLIC-sector employers ONLY; private-sector employers pay 0% (state-funded)CCSS Avis 17.01.2025.
Social-contribution maximum base (ceiling) = 5 x SSM
EUR 13,188.96/month (1 Jan 2025, index 944.43) then EUR 13,518.68/month (from 1 May 2025, index 968.04); annual max approx EUR 162,224. Ceiling does NOT apply to dependency.CCSS Avis 17.01.2025; Orbitax.
Minimum contribution base = SSM unskilled (aged 18+)
EUR 2,637.79/month (1 Jan 2025) then EUR 2,703.74/month (1 May 2025). Skilled SSM is ~+20% (EUR 3,165.31 then EUR 3,244.48).CCSS Avis 17.01.2025; WAT Fiduciary.
CCSS invoicing and remittance
The CCSS invoices the employer the combined employee + employer contributions monthly (extrait de compte); the employer deducts the employee share and remits the full amount, payable within 10 days of the statement's issue.CCSS recouvrement.
Wage withholding remittance frequency
Monthly if monthly withholding >= EUR 750; quarterly if EUR 75--749; annually if < EUR 75; declared and paid via MyGuichet.lu by the 10th of the month following the period.guichet.public.lu retenue-impot.
Tax credits
CIS EUR 0--600/year; CIM EUR 750--3,504/year (class 1a); CISSM EUR 81/month for gross EUR 1,800--3,000, degressive to zero at EUR 3,600PwC; Guichet.lu.
Employer registration
File the declaration d'exploitation with the CCSS within 8 days of the first employee's entry; declare each new hire (declaration d'entree) and each departure (declaration de sortie) within 8 days.guichet.public.lu; CCSS.
Annual salary statement
Transmit the electronic salary statement (extrait de compte salaire / certificat de salaire) of all salaries paid and tax withheld to the ACD before 1 March of the year following the tax year (RGD 26.03.2014).guichet.public.lu extrait-compte-salaire.
Two 2025 parameter sets
Use index 944.43 figures for Jan--Apr 2025 and index 968.04 figures from 1 May 2025.Section 10 item 17
IBAN prefix
LU = LuxembourgSection 13
Rendered from the canonical facts model. General reference only — confirm with a qualified professional before acting.
Tier 2 (research-verified). The 2025 income tax scale (post "Entlaaschtungs-Pak" +2.5 index-bracket adjustment), the solidarity surcharge and the CIS/CISSM/CIM tax credits are confirmed against PwC Worldwide Tax Summaries. The CCSS contribution rate table (sickness 2.80%+2.80%, pension 8%+8%, dependency 1.40%, accident base 0.700%, Mutualite des Employeurs 0.07-2.64%, sante au travail 0.14%) is taken directly from the official CCSS Avis aux employeurs - Taux de cotisation au 01.01.2025 (notice of 17.01.2025) and is firm. The min/max contribution base and the May 2025 indexation are corroborated from Orbitax and WAT Fiduciary. The live CCSS HTML "parametres sociaux" page and several Big-4 newsletter pages returned HTTP 403 to automated fetch, so the official CCSS PDF and Orbitax/WAT were used to corroborate the May 2025 figures. Figures carry [RESEARCH GAP — reviewer to confirm] markers where the primary authority figure could not be pinned to a single fixed published value (notably class 1a withholding mechanics and the exact statutory penalty for late annual-statement filing).
Quick Reference table
| Field | Value |
|---|---|
| Country | Luxembourg (Grand Duchy of Luxembourg / Groussherzogtum Letzebuerg) |
| Currency | EUR only |
| Standard pay frequency | Monthly (overwhelmingly the norm) |
| Tax year | Calendar year (1 January -- 31 December) |
| Tax withholding system | PAYE-style monthly wage withholding (retenue d'impot sur les salaires); employer withholds income tax + solidarity surcharge each pay period from the ACD official tables, based on the employee's tax class and electronic tax card |
| Tax authority | Administration des contributions directes (ACD / Luxembourg Inland Revenue); wage withholding declared and paid via MyGuichet.lu (guichet.public.lu) |
| Social security authority | Centre commun de la securite sociale (CCSS, ccss.public.lu) -- single collector of all social contributions |
| Key legislation | Loi modifiee du 4 decembre 1967 concernant l'impot sur le revenu (LIR) and the Reglement grand-ducal fixing the withholding scale (bareme); Code de la securite sociale (CSS); Reglement grand-ducal du 26 mars 2014 (electronic salary-statement filing). 2025 income tax scale adjusted under the law of 20 December 2024 ("Entlaaschtungs-Pak", +2.5 index brackets) |
| Filing portal | MyGuichet.lu (wage withholding + annual salary statement); CCSS / SECUline (social declarations) |
| Income tax-free band (tax class 1, 2025) | EUR 0 -- 13,230 at 0% (PwC LU 2025) |
| Social-contribution ceiling (max base = 5x SSM) | EUR 13,188.96/month (1 Jan 2025, index 944.43) -> EUR 13,518.68/month (from 1 May 2025, index 968.04); annual max approx EUR 162,224 (CCSS Avis 17.01.2025; Orbitax) |
| Social-contribution floor (min base = SSM unskilled) | EUR 2,637.79/month (Jan 2025) -> EUR 2,703.74/month (May 2025) (CCSS Avis 17.01.2025) |
| Validated by | Pending -- requires sign-off by a Luxembourg reviewer (expert-comptable / fiduciaire) |
| Skill version | 0.1 |
Headline contribution rates (2025) (CCSS Avis aux employeurs 17.01.2025)
| Branch | Employee | Employer |
|---|---|---|
| Pension (assurance pension) | 8.00% | 8.00% (+ 8.00% State; total 24.00%) |
| Sickness -- in kind (prestations en nature) | 2.80% | 2.80% |
| Sickness -- cash (majoration prestations en especes) | 0.25% | 0.25% |
| Dependency / long-term care (assurance dependance) | 1.40% | -- (employee only) |
| Accident insurance (assurance accident) | -- | 0.700% base (bonus-malus 0.595%--1.050%) |
| Occupational health (sante au travail, STM) | -- | 0.14% (private sector using the multi-sector service) |
| Mutualite des Employeurs (MDE) | -- | 0.07% / 0.99% / 1.48% / 2.64% by absenteeism risk class |
| Family benefits (prestations familiales) | -- | 1.70% (PUBLIC-sector employers ONLY; 0% private sector) |
| Typical employee deduction (ex-tax) | ~12.45% (8.00 + 2.80 + 0.25 + 1.40) | -- |
| Typical private-sector employer on-cost (ex-tax, MDE Class 2) | -- | ~12.88% (8.00 + 2.80 + 0.25 + 0.700 + 0.14 + 0.99) |
The employer withholds income tax each pay period under the wage-withholding provisions of the LIR (retenue d'impot sur les salaires), reading the withholding from the official monthly/daily withholding tax tables (bareme) published by the ACD based on the employee's tax class and the data on the electronic withholding tax card (fiche de retenue d'impot). Since 01.01.2022 employees no longer hand a paper card to the employer; the ACD transmits the card data electronically. The withholding includes the solidarity surcharge. (Source: guichet.public.lu retenue-impot.)
Tax Classes table
| Tax class | Who (broadly) |
|---|---|
| 1 | Single, no children |
| 1a | Single parents; persons aged 65+; certain widow(er)s (higher tax-free allowance, ~EUR 26,460 for 2025) |
| 2 | Married / civil-partnership couples taxed jointly, using income-splitting |
The withholding tables differ by class. This skill enumerates the class 1 marginal scale from the research data; class 1a applies a higher tax-free allowance and class 2 broadly applies the class-1 scale to half of joint income ("splitting"). [RESEARCH GAP — reviewer to confirm the exact class 1a tax-free allowance (~EUR 26,460 is reported by secondary summaries) and the class 1a / class 2 withholding-table mechanics against the ACD bareme; only the class 1 marginal scale is enumerated below.] (Source: PwC LU 2025.)
2025 Income Tax Scale -- Tax Class 1 (Source: PwC Worldwide Tax Summaries (Luxembourg, Individual, Taxes on personal income). Post "Entlaaschtungs-Pak" +2.5 index-bracket adjustment of 1 January 2025.)
| Taxable Income (EUR) | Marginal Rate |
|---|---|
| 0 -- 13,230 | 0% |
| 13,230 -- 15,435 | 8% |
| 15,435 -- 17,640 | 9% |
| 17,640 -- 19,845 | 10% |
| 19,845 -- 22,050 | 11% |
| 22,050 -- 24,255 | 12% |
| 24,255 -- 26,550 | 14% |
| 26,550 -- 28,845 | 16% |
| 28,845 -- 31,140 | 18% |
| 31,140 -- 33,435 | 20% |
| 33,435 -- 35,730 | 22% |
| 35,730 -- 38,025 | 24% |
| 38,025 -- 40,320 | 26% |
| 40,320 -- 42,615 | 28% |
| 42,615 -- 44,910 | 30% |
| 44,910 -- 47,205 | 32% |
| 47,205 -- 49,500 | 34% |
| 49,500 -- 51,795 | 36% |
| 51,795 -- 54,090 | 38% |
| 54,090 -- 117,450 | 39% |
| 117,450 -- 176,160 | 40% |
| 176,160 -- 234,870 | 41% |
| 234,870+ | 42% (top marginal) |
Tax Credits table (Source: PwC Worldwide Tax Summaries; guichet.public.lu (CISSM).)
| Credit | Amount | Notes |
|---|---|---|
| Employee tax credit (CIS -- credit d'impot salarie) | EUR 0 -- 600/year, income-dependent | Granted via the tax card; offset against withholding |
| Social minimum wage tax credit (CISSM -- credit d'impot salaire social minimum) | EUR 81/month for gross EUR 1,800 -- 3,000; degressive from EUR 3,000 to EUR 3,600 (formula 81/600 x (3,600 - gross)); EUR 0 above EUR 3,600 | Set so an unskilled-minimum-wage earner has nil tax in all classes for 2025 |
| Single-parent tax credit (CIM -- credit d'impot monoparental) | EUR 750 -- 3,504/year, income-dependent | Tax class 1a |
The CCSS is the single collector of all Luxembourg social contributions. The employee bears four branches; the CCSS invoices the employer the combined employee + employer amount, and the employer deducts the employee share from wages. (Source: CCSS Avis aux employeurs 17.01.2025.)
Employee Contribution Rates table (Source: CCSS Avis aux employeurs 17.01.2025.)
| Branch | Rate | Base | Ceiling |
|---|---|---|---|
| Pension (assurance pension) | 8.00% | Gross remuneration | Max base 5 x SSM (see below) |
| Sickness -- in kind (prestations en nature) | 2.80% | Gross remuneration | Same max base as pension |
| Sickness -- cash (majoration prestations en especes) | 0.25% | Gross remuneration (only insured persons entitled to cash sick pay) | Same max base as pension |
| Dependency / long-term care (assurance dependance) | 1.40% | Gross income less an abatement of 1/4 of the SSM | NO floor or ceiling |
Dependency abatement table (Source: CCSS Avis aux employeurs 17.01.2025; PwC LU Other taxes.)
| Period | Monthly abatement (1/4 of SSM) |
|---|---|
| 1 Jan 2025 (index 944.43) | EUR 659.45 |
| From 1 May 2025 (index 968.04) | EUR 675.94 |
Ceiling and Floor table (Sources: CCSS Avis 17.01.2025; Orbitax (May 2025); WAT Fiduciary.)
| Parameter | 1 Jan 2025 (index 944.43) | From 1 May 2025 (index 968.04) |
|---|---|---|
| Maximum monthly base (5 x SSM) | EUR 13,188.96 | EUR 13,518.68 |
| Minimum monthly base (= SSM unskilled) | EUR 2,637.79 | EUR 2,703.74 |
| Annual maximum base | approx EUR 162,224 (12 x 13,518.68) | approx EUR 162,224 (12 x 13,518.68) |
The employer matches the employee on pension and sickness, and additionally pays accident insurance, occupational health and the Mutualite des Employeurs — all employer-only. (Source: CCSS Avis aux employeurs 17.01.2025.)
Employer Contribution Rates table (Source: CCSS Avis aux employeurs 17.01.2025.)
| Branch | Rate | Base | Ceiling | Notes |
|---|---|---|---|---|
| Pension (assurance pension) | 8.00% | Gross remuneration | 5 x SSM | Mirrors employee (+ 8.00% State; total 24.00%) |
| Sickness -- in kind | 2.80% | Gross remuneration | 5 x SSM | Mirrors employee |
| Sickness -- cash | 0.25% | Gross remuneration | 5 x SSM | Mirrors employee (cash-benefit majoration) |
| Accident insurance (assurance accident) | 0.700% base | Gross remuneration | 5 x SSM | Employer-only; base 0.700% adjusted by a bonus-malus factor (see below) |
| Occupational health (sante au travail, STM) | 0.14% | Gross remuneration | 5 x SSM | Employer-only; private-sector employers using the multi-sector occupational health service (STM) |
| Mutualite des Employeurs (MDE) | 0.07% / 0.99% / 1.48% / 2.64% | Gross remuneration | 5 x SSM | Employer-only; by financial-absenteeism risk class (see below) |
| Family benefits (prestations familiales) | 1.70% | Gross remuneration | 5 x SSM | PUBLIC-sector employers ONLY; private-sector employers pay 0% (state-funded) |
Bonus-malus table (Source: CCSS Avis aux employeurs 17.01.2025.)
| Bonus-malus factor | Effective rate |
|---|---|
| 0.85 | 0.595% |
| 1.00 (default) | 0.700% |
| 1.10 | 0.770% |
| 1.30 | 0.910% |
| 1.50 | 1.050% |
MDE Absenteeism Classes table (Source: CCSS Avis aux employeurs 17.01.2025.)
| Class | Financial absenteeism | Rate (2025) |
|---|---|---|
| Class 1 | < 0.65% | 0.07% |
| Class 2 | < 1.60% | 0.99% |
| Class 3 | < 2.50% | 1.48% |
| Class 4 | >= 2.50% | 2.64% |
Note: figures vary with the MDE class and the accident bonus-malus factor — both are employer-specific. The State also pays an additional 8.00% pension contribution that is not an employer payroll cost.
SSM table (Sources: CCSS Avis 17.01.2025; WAT Fiduciary (May 2025).)
| Category | 1 Jan 2025 (index 944.43) | From 1 May 2025 (index 968.04) |
|---|---|---|
| Unskilled, aged 18+ (non qualifie) | EUR 2,637.79 | EUR 2,703.74 |
| Skilled, aged 18+ (qualifie, approx +20%) | EUR 3,165.31 | EUR 3,244.48 |
| Aged 17-18 (80% of SSM) | EUR 2,110.23 | [RESEARCH GAP — reviewer to confirm May 2025 figure] |
| Aged 15-17 (75% of SSM) | EUR 1,978.34 | [RESEARCH GAP — reviewer to confirm May 2025 figure] |
Other Reference Items table
| Item | Amount | Notes / Source |
|---|---|---|
| Employee tax credit (CIS) | EUR 0 -- 600/year | Income-dependent; via tax card (PwC) |
| Social minimum wage tax credit (CISSM) | EUR 81/month (gross EUR 1,800 -- 3,000); degressive to EUR 0 at EUR 3,600 | Formula 81/600 x (3,600 - gross) between EUR 3,000 and 3,600 (PwC; Guichet.lu) |
| Single-parent tax credit (CIM) | EUR 750 -- 3,504/year | Tax class 1a (PwC) |
| Class 1a tax-free allowance (2025) | ~EUR 26,460 | [RESEARCH GAP — reported by secondary summaries; verify against ACD bareme] |
Statutory leave, the 13th month and overtime premia are not enumerated in the research data for this skill. [RESEARCH GAP — reviewer to confirm Luxembourg statutory annual leave, public holidays, sick-pay continuation rules and any 13th-month / bonus treatment before relying on them.]
When an input is ambiguous, apply the conservative default and flag for the reviewer rather than guessing.
Minimum viable — for each employee: gross monthly remuneration, the tax class from the fiche de retenue d'impot (electronic tax card), pay frequency, and the period being run. The employer's matricule employeur (CCSS registration number).
Recommended — date of hire (CCSS entry declaration), whether the employer is public or private sector (for the 1.70% family-benefits contribution), the MDE absenteeism class, the accident bonus-malus factor, any card-noted CIS/CISSM/CIM credits, prior-month cumulative figures, and any non-cash benefits.
Ideal — full employee register, the CCSS monthly contribution statements/invoices, prior MyGuichet.lu withholding declarations, and prior-year salary-statement data for reconciliation.
Match by case-insensitive substring. French / Luxembourgish / German variants treated as their English equivalent. Most specific match wins.
Salary credits table
| Pattern | Classification |
|---|---|
| SALAIRE, TRAITEMENT, PAIE, LOHN, GEHALT, SALARY | Net salary payment |
| EMPLOYEUR [name] VIREMENT, WAGES, SALAIRE NET | Net salary payment |
| 13E MOIS, 13EME MOIS, GRATIFICATION | 13th-month / bonus (if applicable; taxable, contributory) |
| HEURES SUPPLEMENTAIRES, UEBERSTUNDEN, OVERTIME | Overtime pay |
| PRIME, BONUS | Bonus (taxable, contributory) |
Employer statutory debits table
| Pattern | Classification |
|---|---|
| CCSS, CENTRE COMMUN, SECURITE SOCIALE, SECU | CCSS combined social contributions (pension + sickness + dependency + accident + occupational health + MDE) |
| RETENUE IMPOT, RTS, ACD, CONTRIBUTIONS DIRECTES, MYGUICHET | Wage withholding tax (income tax + solidarity surcharge) to the ACD via MyGuichet.lu |
| FONDS POUR L'EMPLOI, SOLIDARITE | Solidarity surcharge component (part of the withholding remittance) |
| MUTUALITE DES EMPLOYEURS, MDE | Mutualite des Employeurs (within the CCSS invoice) |
| ASSURANCE ACCIDENT, AAA | Accident insurance (within the CCSS invoice) |
| ASSURANCE DEPENDANCE | Dependency / long-term care (within the CCSS invoice) |
| SANTE AU TRAVAIL, STM | Occupational health (within the CCSS invoice) |
Net wage disbursement table
| Pattern | Classification |
|---|---|
| VIREMENT SALAIRES, PAIE, LOHNLAUF, SALARY RUN, PAYROLL BATCH | Salary disbursement to employees |
| MASSE SALARIALE | Payroll run |
Exclusions table
| Pattern | Classification |
|---|---|
| VIREMENT INTERNE, OWN TRANSFER, EIGENUEBERTRAGUNG | Internal movement -- exclude |
| DIVIDENDE, DIVIDEND | Out of scope -- exclude |
| PRET, DARLEHEN, LOAN | Loan principal -- exclude |
| INTERETS, ZINSEN, INTEREST | Interest -- exclude |
All figures use the 1 May 2025 parameter set (index 968.04) unless stated: SSM unskilled EUR 2,703.74; max base EUR 13,518.68/month; dependency abatement EUR 675.94/month. Tax withholding shown is illustrative (tax class 1, before/after card-noted credits) — exact monthly withholding comes from the ACD bareme using the tax card, so a Luxembourg reviewer must confirm. Employer on-cost assumes a private-sector employer with MDE Class 2 (0.99%) and accident factor 1.00 (0.700%).
Bank statement line (employer): 30.05.2025 ; VIREMENT SALAIRES -- A. WEBER ; DEBIT ; Salaire mai ; -2,376.59 ; EUR
Reasoning: Gross EUR 2,703.74. Employee social contributions: pension 8.00% = EUR 216.30; sickness 3.05% = EUR 82.46; dependency 1.40% on (2,703.74 − 675.94 abatement) = 1.40% × 2,027.80 = EUR 28.39. Employee social total = 216.30 + 82.46 + 28.39 = EUR 327.15. For tax, the CISSM credit is designed so an unskilled-minimum-wage earner has nil tax in all classes for 2025 — illustrative withholding ≈ EUR 0 after CISSM/CIS. Net ≈ 2,703.74 − 327.15 = EUR 2,376.59 (illustrative).
Example 1 table (Example 1 table)
| Item | Base | Rate | Amount (EUR) |
|---|---|---|---|
| Gross | -- | -- | 2,703.74 |
| Employee pension | 2,703.74 | 8.00% | 216.30 |
| Employee sickness | 2,703.74 | 3.05% | 82.46 |
| Employee dependency | 2,027.80 (post-abatement) | 1.40% | 28.39 |
| Wage withholding (after CISSM/CIS) | -- | illustrative | ~0.00 |
| Net pay (illustrative) | -- | -- | ~2,376.59 |
Bank statement line (employee credit): 30.06.2025 ; EMPLOYEUR SARL VIREMENT ; CREDIT ; Salaire juin ; +3,5xx.xx ; EUR
Reasoning: Gross EUR 4,500, within the ceiling. Employee pension 8.00% = EUR 360.00; sickness 3.05% = EUR 137.25; dependency 1.40% × (4,500 − 675.94) = 1.40% × 3,824.06 = EUR 53.54. Employee social total = 360.00 + 137.25 + 53.54 = EUR 550.79. Gross is above EUR 3,600 so no CISSM; a small CIS may apply via the card. Annual taxable ≈ 12 × (4,500 − 550.79) ≈ EUR 47,390; class-1 income tax + 7% solidarity, divided across the year. Withholding here is illustrative — the exact monthly figure comes from the ACD bareme using the tax card. [RESEARCH GAP — exact monthly withholding requires the ACD class-1 withholding table; only the marginal scale is enumerated.]
Example 2 table (Example 2 table)
| Item (monthly) | Base | Rate | Amount (EUR) |
|---|---|---|---|
| Gross | -- | -- | 4,500.00 |
| Employee pension | 4,500.00 | 8.00% | 360.00 |
| Employee sickness | 4,500.00 | 3.05% | 137.25 |
| Employee dependency | 3,824.06 (post-abatement) | 1.40% | 53.54 |
| Wage withholding (income tax + 7% solidarity) | -- | per bareme | illustrative |
| Net pay | -- | -- | 3,949.21 − withholding |
Bank statement line (employer debit, CCSS): 05.07.2025 ; CENTRE COMMUN SECURITE SOCIALE ; DEBIT ; Cotisations juin ; -4,1xx.xx ; EUR
Reasoning: Monthly EUR 16,000 exceeds the max base EUR 13,518.68. Capped branches (pension, sickness, accident, occupational health, MDE) apply only to EUR 13,518.68. Dependency has no ceiling and is on the full post-abatement income: 1.40% × (16,000 − 675.94) = 1.40% × 15,324.06 = EUR 214.54.
Employer on-cost = 1,081.49 + 412.32 + 94.63 + 18.93 + 133.83 = EUR 1,741.20. The employee dependency (EUR 214.54) is on the full EUR 15,324.06 post-abatement, not the capped EUR 13,518.68. The employer pays no dependency and (private sector) no family benefits.
Example 3 table (Example 3 table)
| Item (monthly) | Base | Rate | Amount (EUR) |
|---|---|---|---|
| Employee pension | 13,518.68 (capped) | 8.00% | 1,081.49 |
| Employee sickness | 13,518.68 (capped) | 3.05% | 412.32 |
| Employee dependency | 15,324.06 (uncapped, post-abatement) | 1.40% | 214.54 |
| Employer pension | 13,518.68 (capped) | 8.00% | 1,081.49 |
| Employer sickness | 13,518.68 (capped) | 3.05% | 412.32 |
| Employer accident | 13,518.68 (capped) | 0.700% | 94.63 |
| Employer occupational health | 13,518.68 (capped) | 0.14% | 18.93 |
| Employer MDE (Class 2) | 13,518.68 (capped) | 0.99% | 133.83 |
| Employer on-cost (CCSS, ex-State, private sector) | -- | -- | 1,741.20 |
Reasoning: For a Jan--Apr 2025 pay period, use the index 944.43 set: SSM unskilled EUR 2,637.79, max base EUR 13,188.96, dependency abatement EUR 659.45. From the May 2025 pay period, switch to the index 968.04 set (EUR 2,703.74 / EUR 13,518.68 / EUR 675.94). For an unskilled-minimum-wage employee, the Jan gross is EUR 2,637.79 and the May gross is EUR 2,703.74 — a 2.5% indexation uplift (2,637.79 × 1.025 = 2,703.74). Always confirm which pay period you are running before selecting the parameter set.
Bank statement line (employer debit): 10.07.2025 ; CCSS CENTRE COMMUN ; DEBIT ; Facture cotisations juin ; -3,4xx.xx ; EUR
Reasoning: The CCSS issues a monthly account statement (extrait de compte) invoicing the employer the combined employee + employer social contributions. The employer deducts the employee share from wages and remits the full invoiced amount; the balance is payable within 10 days of the statement's issue. Classify as a CCSS social-contribution remittance (a mix of expense — the employer share — and liability — the withheld employee share), not an employee salary payment. Late payment carries default interest of 0.6% per full calendar month. Source: CCSS recouvrement / facturation.
Bank statement line (employer debit): 09.04.2025 ; ACD RETENUE IMPOT ; DEBIT ; RTS Q1 / mars ; -8xx.xx ; EUR
Reasoning: This is the wage withholding tax (income tax + solidarity surcharge) withheld from employees, declared and paid via MyGuichet.lu on the Declaration de la retenue d'impot sur remunerations et des credits d'impot bonifies. Remittance frequency depends on monthly withholding: monthly if >= EUR 750; quarterly if EUR 75 -- 749; annually if < EUR 75. The declaration and payment are due by the 10th of the month following the period (e.g. by 10 April for March / Q1). Classify as a wage-withholding remittance, not an expense to the employee. Source: guichet.public.lu retenue-impot.
Mutualite des Employeurs (MDE) 2025 by absenteeism class (CCSS Avis 17.01.2025.)
| Class | Rate |
|---|---|
| Class 1 | 0.07% |
| Class 2 | 0.99% |
| Class 3 | 1.48% |
| Class 4 | 2.64% |
Items requiring professional judgement; apply the default and flag the question.
Default: require the tax card data; do not guess the class. If no valid card, class 1 min 33%. Question: "What tax class (1, 1a or 2) does the employee's fiche de retenue d'impot show, and are any deductions/credits noted?" — R-LU-P-1.
Default: flag for the payroll engine / ACD bareme. Question: "Is this employee class 1a or 2? The withholding-table mechanics differ from class 1." [RESEARCH GAP — only the class 1 scale and a ~EUR 26,460 class 1a allowance estimate are enumerated.]
Default: private sector (no 1.70% family-benefits contribution). Question: "Is the employer a public-sector body? Only public-sector employers pay the 1.70% prestations familiales contribution."
Default: model a mid class until the CCSS-assigned class is known. Question: "What MDE absenteeism class has the CCSS assigned the employer?" Swings employer cost between 0.07% and 2.64%.
Default: 0.700% with factor 1.00. Question: "What accident bonus-malus factor (0.85--1.50) has the Accident Insurance Association notified?"
Default: 0.14% if the employer uses the multi-sector service (STM). Question: "Which occupational-health service is the employer affiliated to? STM = 0.14%; in-house/sector services may differ."
Default: Jan 2025 set for Jan--Apr; May 2025 set from 1 May 2025. Question: "Which 2025 pay period — before or from 1 May 2025?"
Default: 7%. Question: "Does taxable income exceed EUR 150,000 (class 1/1a) or EUR 300,000 (class 2)?" — if so, 9%.
Default: apply only credits shown on the tax card. Question: "Are CIS, CISSM or CIM credits noted on the card?"
Default: treat cash gross only; flag benefits. Question: "Any company car, housing, equity, or impatriate-regime entitlement?" — R-LU-P-4 / R-LU-P-5. [RESEARCH GAP — benefit-in-kind valuation rules not detailed here.]
Default: domestic Luxembourg contributions and withholding. Question: "Is the employee a frontalier or holding an A1/E101 certificate?" — R-LU-P-3.
Default: flag exposure. Question: "Were any CCSS entry/exit declarations, CCSS payments, or wage-withholding payments late?" See Section 15.
Per payroll-workflow-base. One row per employee per pay period. Suggested columns:
Excel working paper column definitions (payroll-workflow-base)
| Col | Header | Notes |
|---|---|---|
| A | Employee name | -- |
| B | Matricule (social security number) | 13-digit Luxembourg national ID |
| C | Tax class | 1 / 1a / 2 (from tax card) |
| D | Pay period | e.g. 2025-06 |
| E | Gross remuneration | Period gross |
| F | Capped base | min(gross, EUR 13,518.68/month for May 2025; EUR 13,188.96 Jan--Apr) |
| G | Dependency base | gross − 1/4 SSM abatement (EUR 675.94 May 2025; EUR 659.45 Jan--Apr); no cap, no floor |
| H | Employee pension 8.00% | F × 8.00% |
| I | Employee sickness 3.05% | F × 3.05% |
| J | Employee dependency 1.40% | G × 1.40% (post-abatement, uncapped) |
| K | Wage withholding (income tax + solidarity − credits) | per tax card / ACD bareme |
| L | Net pay | E − H − I − J − K |
| M | Employer pension 8.00% | F × 8.00% |
| N | Employer sickness 3.05% | F × 3.05% |
| O | Employer accident | F × 0.700% × bonus-malus factor |
| P | Employer occupational health 0.14% | F × 0.14% (if STM) |
| Q | Employer MDE | F × class rate (Class 2 = 0.99%) |
| R | Employer family benefits 1.70% | F × 1.70% (public sector only; else 0) |
| S | Total employer cost | E + M + N + O + P + Q + R |
Summary sheet rolls up: total wage withholding (→ ACD via MyGuichet.lu), total CCSS contribution bundle (employee + employer, → CCSS), and total employer cost. Note column J's base (G, post-abatement, uncapped) differs from the capped base F used everywhere else; the employer pays no dependency, and (private sector) no family benefits.
BGL BNP Paribas, Banque et Caisse d'Epargne de l'Etat (Spuerkeess), Banque Internationale a Luxembourg (BIL) and Banque Raiffeisen typically use semicolon or comma delimiters and DD/MM/YYYY dates. EUR only. Statements often mix French, German and Luxembourgish narratives.
Language variants (treat as English equivalent)
| French / German / Luxembourgish | English |
|---|---|
| Salaire / Traitement / Lohn / Gehalt | Salary |
| Paie / Masse salariale / Lohnlauf | Payroll run |
| Securite sociale / CCSS / Centre commun | Social security (CCSS bundle) |
| Retenue d'impot / RTS / Lohnsteuer | Wage withholding tax |
| Fonds pour l'emploi / Solidarite | Solidarity surcharge (employment fund) |
| Assurance dependance / Pflegeversicherung | Dependency / long-term care insurance |
| Assurance accident / Unfallversicherung | Accident insurance |
| Sante au travail / Arbeitsmedizin | Occupational health |
| Mutualite des Employeurs / MDE | Employer mutual insurance |
| Prestations familiales | Family benefits |
| Heures supplementaires / Ueberstunden | Overtime |
"ACD" / "Administration des contributions directes" / "Contributions directes" / "MyGuichet" = the tax authority (wage withholding). "CCSS" / "Centre commun de la securite sociale" / "Securite sociale" = the single social-contribution collector (pension, sickness, dependency, accident, occupational health, MDE — and, for public-sector employers, family benefits — all in one invoice / extrait de compte).
Inference: employment contract = employee. Fallback: "Is this an employee on payroll or a self-employed / non-salaried person?" If self-employed → R-LU-P-2.
Fallback: "Do you have the employee's fiche de retenue d'impot (electronic tax card) data with the tax class?" If not → R-LU-P-1 (else class 1, min 33%).
Inference: monthly by default. Fallback: "Monthly pay confirmed?"
Fallback: "Monthly gross salary, and any 13th month / bonus / benefits in kind?"
Fallback: "Is the employer public or private sector? What MDE absenteeism class and accident bonus-malus factor applies? (defaults: private sector / mid MDE class / accident factor 1.00)"
Inference: current calendar year. Fallback: "Which 2025 pay period — before or from 1 May 2025? (parameters differ)"
Fallback: "Is the employer registered with the CCSS (matricule employeur, declaration d'exploitation) and has the new hire's declaration d'entree been filed within 8 days?"
Fallback: "Is the employee a frontalier (commuting from FR/BE/DE) or holding an A1 certificate?" — R-LU-P-3 if cross-border.
Forms and Deadlines (Forms and Deadlines)
| Form | Purpose | Deadline |
|---|---|---|
| Fiche de retenue d'impot (electronic tax card) | Determines the employee's tax class and deductions/credits; transmitted electronically by the ACD to the employer | Transmitted by the ACD; if absent, withhold class 1 min 33% |
| Declaration de la retenue d'impot sur remunerations et des credits d'impot bonifies (via MyGuichet.lu) | Employer declares and pays income tax + solidarity surcharge withheld and reimbursable tax credits | By the 10th of the month following the period (monthly if >= EUR 750/mo; quarterly if EUR 75--749; annually if < EUR 75) |
| Extrait de compte salaire / certificat de salaire (annual salary statement) | Electronic transmission to the ACD of all salaries paid and tax withheld during the year (XML or online assistant on MyGuichet.lu); employee also receives an annual salary certificate | Before 1 March of the year following the tax year (RGD 26.03.2014) |
| Declaration d'exploitation (employer registration with CCSS) | Obtain the employer registration number (matricule employeur) | Within 8 days of the first employee's entry |
| Declaration d'entree (start of employment) | Notify the CCSS of each new hire so they are affiliated to social security | Within 8 days of hiring |
| Declaration de sortie (end of employment) | Notify the CCSS when an employee leaves | Within 8 days of departure |
| Monthly CCSS account statement (extrait de compte) | CCSS computes total social contributions (employee + employer) and invoices the employer | Balance payable within 10 days of the statement's issue |
Penalties and Interest (Penalties and Interest)
| Item | Detail |
|---|---|
| Late payment of social contributions (CCSS) | Default interest of 0.6% per full calendar month (fractions of a month disregarded), running from the 1st day of the month following the due date; after 4 unpaid monthly statements the CCSS begins enforced recovery. (CCSS recouvrement.) |
| Late declaration of start of employment (>30 days late) | EUR 50 per month of delay, capped at EUR 2,500. (guichet.public.lu declaration-entree.) |
| Late / non-filing of annual salary statement with the ACD (after 1 March) | Additional tax charge (majoration) for late/non-filing, or a fine, set under the relevant LIR / RGD provisions. [RESEARCH GAP — not published as a single fixed figure; reviewer to confirm against the ACD.] |
| Late payment / non-declaration of withholding tax to the ACD | Late-payment interest and surcharges (majorations) under the LIR; the responsible employer is personally liable for withholding tax not correctly deducted/remitted. (LIR; guichet.public.lu.) |
Interaction with Other Skills
| Scenario | Skill to Use |
|---|---|
| Employee payroll (wage withholding + CCSS) | This skill (luxembourg-payroll.md) |
| Resident/employee personal income tax | luxembourg-income-tax.md |
| Social contributions detail | luxembourg-social-contributions.md |
| Luxembourg VAT returns | luxembourg-vat-return.md |
| Employer corporate tax | luxembourg-corporate-tax.md |
| Cross-border / frontalier / A1 / treaty | cross-border skill |
Payroll → Bookkeeping: Gross wages and all employer contributions (pension, sickness, accident, occupational health, MDE, plus family benefits if public sector) are expenses; wage withholding and the employee social share are liabilities until remitted to the ACD / CCSS.
Payroll → Income Tax: Employment income and withholding feed the employee's annual income tax assessment and the employer's annual salary statement (extrait de compte salaire) to the ACD.
Payroll → Self-employed: Self-employed and non-salaried persons are handled outside payroll.
A correct implementation should pass each of these checks (May 2025 / index 968.04 parameter set unless noted):
This skill and its outputs are provided for informational and computational purposes only and do not constitute tax, legal, or financial advice. Open Accountants and its contributors accept no liability for any errors, omissions, or outcomes arising from the use of this skill. All outputs must be reviewed and signed off by a qualified professional (such as an expert-comptable or fiduciaire in Luxembourg) before implementation.
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