CNSS, IR, AMO, and CIMR: Understanding Moroccan Payroll Deductions for Employers

Moroccan payroll is not as complex as it looks on the surface, but it does have more moving parts than any other North African jurisdiction. Between CNSS (split across five sub-branches), AMO, IR with its reformed 2026 scale, and the optional CIMR supplementary retirement scheme, a Casablanca small business owner is filing with more institutions than most European employers.

The 2025 Finance Law reworked the IR brackets substantially. The first tax-free threshold jumped from MAD 30,000 to MAD 40,000 per year, marginal rates dropped across most bands, and the top rate came down from 38% to 37%. If your payroll software last updated in 2024, you're over-deducting your staff in 2026.

This guide covers the four main payroll items every Moroccan employer has to get right, with current 2026 rates and a worked example. For the broader picture (labour law, leave, data protection), see our Morocco HR guide.

The four payroll items at a glance

Item	Paid by	Remitted to	Based on
CNSS (all branches)	Employee + employer	CNSS	Gross salary (with ceilings)
AMO	Employee + employer	CNSS (for private sector)	Gross salary, no ceiling
IR (income tax)	Employee only	DGI	Net taxable income
CIMR (optional)	Employee + employer	CIMR mutuelle	Gross salary, rate set by scheme

CNSS and AMO together make up the main social-security package. IR is the personal income tax withheld at source. CIMR is a voluntary top-up retirement scheme that many private employers offer as a benefit.

CNSS: Caisse Nationale de Sécurité Sociale

CNSS is Morocco's mandatory social-security institution. Every private-sector employer must register within one month of hiring the first employee, and CNSS contributions are remitted monthly via the Damancom portal.

CNSS contributions are split across five branches, each with its own rate:

Branch	Employer	Employee	Ceiling
Family allowances	6.40%	0%	No ceiling (full gross)
Short-term benefits	1.05%	0.52%	6,000 MAD per month
Long-term benefits	7.93%	3.96%	6,000 MAD per month
AMO (health insurance)	4.11%	2.26%	No ceiling (full gross)
Vocational training tax	1.60%	0%	No ceiling (full gross)
Total	21.09%	6.74%

Two things to notice. First, the ceiling of 6,000 MAD per month only applies to the short-term and long-term branches. Family allowances, AMO, and the vocational training tax are calculated on the full gross salary without any cap. Second, four of the five branches involve an employer contribution; only family allowances and the training tax are purely employer-funded.

Short-term benefits cover things like sickness indemnities, maternity, and temporary disability. Long-term benefits cover retirement and invalidity pensions. Both are capped at the 6,000 MAD ceiling, which means for an employee earning 15,000 MAD gross, short-term and long-term contributions are calculated on 6,000 MAD only.

AMO: assurance maladie obligatoire

AMO is Morocco's mandatory health insurance. For private-sector employees, AMO is administered through CNSS rather than as a separate fund, but the contribution is still listed separately on payslips.

• Employer: 4.11% of gross salary
• Employee: 2.26% of gross salary
• Ceiling: None; calculated on full gross

AMO covers a defined package of outpatient consultations, hospital stays, and chronic disease treatments. Employees and their dependents receive care at reduced cost through a network of contracted providers, with CNSS reimbursing the provider or the patient depending on the treatment category.

A quick note on 2026 governance: the system is in the process of unifying public and private AMO management under CNSS, following the 2024 to 2026 reform roadmap. For private-sector employers this changes little on the payroll side, but expect some administrative streamlining in the CNSS portals over the next 12 to 18 months.

IR: impôt sur le revenu

IR is the personal income tax, withheld by the employer from each payroll and remitted monthly to the Direction Générale des Impôts. The 2025 Finance Law reworked the brackets, and the 2026 scale is:

Annual income (MAD)	Rate	Amount to deduct (MAD)
0 to 40,000	0%	Exempt
40,001 to 60,000	10%	4,000
60,001 to 80,000	20%	10,000
80,001 to 100,000	30%	18,000
100,001 to 180,000	34%	22,000
Above 180,000	37%	27,400

The "amount to deduct" column is a shortcut that produces the same result as calculating bracket-by-bracket. The formula is:

Annual IR = (Net taxable income × Rate) − Amount to deduct
Monthly IR = Annual IR ÷ 12

To get to net taxable income from gross salary, apply:

1. Subtract the employee portion of CNSS and AMO contributions (6.74% combined on relevant bases)
2. Subtract the 20% professional expenses allowance (capped at 30,000 MAD per year, or 2,500 MAD per month)
3. Subtract the family-dependent allowance (500 MAD per year per dependent, capped at 3,000 MAD per year)

The result is the net taxable income to which the IR bracket table applies.

CIMR: voluntary supplementary retirement

CIMR (Caisse Interprofessionnelle Marocaine de Retraites) is a private, optional supplementary retirement scheme. It is not mandatory under the Code du Travail, but it's a common benefit in medium and large employers and increasingly used as a recruitment differentiator by smaller Casablanca and Rabat firms.

If you subscribe:

• The contribution rate is negotiated between the employer and CIMR, typically 3% to 6% of gross salary from each side
• Contributions are tax-advantaged: the employer contribution is a deductible corporate expense, and the employee portion reduces IR taxable income up to certain limits
• CIMR operates its own pension management; payouts are on top of the CNSS long-term pension

CIMR is not required. If your team is small enough that offering pension top-ups is not on the table yet, a standard CNSS-only arrangement is fully compliant.

Worked example: a Casablanca employee on 12,000 MAD gross

Take an employee earning MAD 12,000 gross per month. For one month of payroll:

CNSS and AMO (employee portion):

• Short-term benefits: 0.52% × 6,000 = MAD 31.20 (capped base)
• Long-term benefits: 3.96% × 6,000 = MAD 237.60 (capped base)
• AMO: 2.26% × 12,000 = MAD 271.20 (no cap)
• Total employee CNSS/AMO: MAD 540

Net taxable income calculation:

• Gross: MAD 12,000
• Less CNSS/AMO employee: MAD 540
• Less 20% professional expenses allowance on MAD 11,460 = MAD 2,292 (above the MAD 2,500 monthly cap would apply, not the case here)
• Net taxable monthly income: MAD 9,168
• Annualized: MAD 110,016

IR calculation:

• Falls in the 100,001 to 180,000 bracket: 34% with 22,000 deduction
• Annual IR = (110,016 × 0.34) − 22,000 = MAD 15,405
• Monthly IR = MAD 1,284

Employee's monthly payslip:

Item	Deduction
CNSS/AMO (employee)	MAD 540
IR	MAD 1,284
Total	MAD 1,824
Net salary	MAD 10,176

Employer contribution costs on top of the gross:

• Family allowances: 6.40% × 12,000 = MAD 768
• Short-term benefits: 1.05% × 6,000 = MAD 63
• Long-term benefits: 7.93% × 6,000 = MAD 476
• AMO: 4.11% × 12,000 = MAD 493
• Vocational training tax: 1.60% × 12,000 = MAD 192
• Total employer cost above gross: MAD 1,992

True cost of that hire: MAD 12,000 + 1,992 = MAD 13,992 per month.

That 16.6% gap between gross and true cost is the single biggest thing first-time Moroccan employers miss when budgeting. A true cost of employment calculator saves the manual arithmetic; a full payroll calculator runs CNSS, AMO, and IR against current brackets in one pass.

Common employer mistakes

• Payroll templates still using 2024 IR brackets, producing over-deductions after the 2025 reform
• Calculating long-term CNSS on full gross instead of the MAD 6,000 ceiling (leads to over-contribution)
• Calculating AMO on the MAD 6,000 ceiling instead of full gross (leads to under-contribution, which is the costlier error)
• Forgetting to file CNSS monthly via Damancom by the 10th of the following month
• Not applying the 20% professional expenses allowance before IR (leads to over-withholding)
• Labelling CIMR as mandatory in offer letters when it's optional
• Budgeting from gross salary without the 16% to 21% employer contribution uplift

Key points

• CNSS is split across five branches totalling 21.09% employer and 6.74% employee
• The MAD 6,000 monthly ceiling applies to short-term and long-term benefits only
• AMO, family allowances, and the vocational training tax are calculated on full gross without a cap
• IR brackets were reformed by the 2025 Finance Law; 2026 uses 0%, 10%, 20%, 30%, 34%, and 37% rates
• The 20% professional expenses allowance reduces net taxable income before IR applies
• CIMR is optional; it is a competitive benefit, not a statutory requirement
• True cost of employment runs roughly 16% to 21% above gross salary, depending on the mix of capped and uncapped components

If your Moroccan payroll templates haven't been refreshed since 2024, the 2025 Finance Law and the 2026 CNSS ceilings are both reasons to pull them current. A single month of under-filed CNSS or over-withheld IR is usually straightforward to fix; a year of accumulated compliance drift is not. For the operational side, hiring and contract specifics are covered in our Moroccan hiring guide.