Yacht Crew Employment and Tax in Spain

Employment Classification: Employee vs Contractor

The starting point for any analysis of crew tax in Spain is the question of whether crew members are employees or self-employed contractors. Under Spanish labour and Social Security law, this distinction is not determined by the label that the parties choose to apply — it is determined by the economic reality of the working relationship.

Spanish law defines an employment relationship as one characterised by: personal service (the individual personally performs the work); economic dependence (the individual derives their income primarily from one source); and direction and control (the individual works under the instructions and supervision of the employer). A captain or crew member who works exclusively or primarily on one vessel, lives aboard, follows the owner's itinerary, and is paid a fixed monthly salary almost certainly qualifies as an employee regardless of how their service is structured contractually.

The AEAT and the Spanish Social Security authorities (TGSS and ISM) conduct targeted inspections of charter vessels and marina-based operators, looking specifically for misclassified crew. The penalty for failing to register an employee as a Social Security contributor can reach €10,000 per worker, in addition to back-contributions for up to four years.

The Maritime Social Security Regime (REM)

Crew working on maritime vessels in Spain are not enrolled in the general Social Security regime but in the Régimen Especial de Trabajadores del Mar (REM) — the Special Maritime Workers' Regime. The REM is administered by the Instituto Social de la Marina (ISM), not the general TGSS.

The REM applies to:

• Crew working on Spanish-flagged vessels, regardless of where they operate
• Crew working on foreign-flagged vessels that operate principally from Spanish ports or in Spanish territorial waters, where the operator is a Spanish entity or individual
• Self-employed maritime workers who fish or provide maritime services commercially (Autónomos del Mar)

The REM provides equivalent benefits to the general regime: healthcare, unemployment insurance, work accident coverage, maternity/paternity pay, and pension contributions. The contribution rates and calculation bases broadly mirror those of the general regime, with some maritime-sector-specific modifications for time spent at sea.

IRPF Withholding on Crew Salaries

An employer (whether a charter company, a private owner employing crew directly, or a crew management company) who pays salaries to crew members who are Spanish tax residents must withhold IRPF (income tax) at the applicable rate and remit those withholdings to the AEAT quarterly on Modelo 111.

The withholding rate is calculated based on the crew member's anticipated annual income, their personal and family circumstances (marital status, dependants), and any deductible expenses. The Spanish tax tables for earned income produce withholding rates that typically range from 15% to 45% depending on the salary level and personal circumstances.

At the end of each calendar year, the employer must issue each crew member with a Modelo 190 annual payroll summary, which the crew member uses to reconcile their IRPF withholdings against their actual annual tax liability when filing their personal income tax return (Modelo 100).

Spanish Social Security Contribution Rates

Rates are indicative for 2026. Maritime sector rates under the REM may differ slightly. Rates apply to the contribution base (broadly equal to gross salary, subject to minimum and maximum bases). These should be verified with a Social Security specialist.

MLC 2006 and Its Interaction with Spanish Law

The Maritime Labour Convention 2006 (MLC 2006) — ratified by Spain — establishes minimum standards for seafarers' employment conditions aboard ships covered by the Convention. For vessels over 500 GT engaged in international voyages, compliance with MLC 2006 is mandatory and subject to port state control inspection.

MLC 2006 requirements relevant to tax and payroll include: a written employment agreement for each seafarer; payment of wages in full and on time; regulation of maximum work hours and minimum rest periods; and provision of repatriation at the operator's expense if the employment is terminated in a foreign port. Where MLC 2006 applies, its standards operate as a floor — Spanish law applies where it is more protective, and MLC 2006 where it is more protective than Spanish law.

Non-Resident Crew: IRNR at 24%

A crew member who is not a Spanish tax resident but who earns income from work performed in Spain (on a Spanish-flagged vessel or on a vessel operating from Spain) is subject to the Impuesto sobre la Renta de No Residentes (IRNR). The applicable rate is 24% for residents outside the EU/EEA or 19% for EU/EEA residents, applied to gross Spanish-source employment income.

The employer must withhold IRNR at the appropriate rate and remit it to the AEAT on Modelo 216 (the non-resident equivalent of Modelo 111). The non-resident crew member is not entitled to the same personal allowances and deductions as a Spanish resident in computing their IRNR liability — IRNR is applied on the gross income received, without deduction.

Treaty relief may be available where the crew member's country of residence has a double tax treaty with Spain containing a specific provision on maritime employment income. The OECD Model Treaty Article 15 contains rules on the allocation of employment income for individuals employed on ships, and many of Spain's bilateral treaties follow this model. Specialist advice should be sought where crew are non-EU and their home country has a treaty with Spain.

Self-Employed Crew: Autónomos del Mar

Some maritime workers — particularly independent skippers who provide services to multiple vessel owners, diving instructors, or maritime engineers who service multiple charter companies — are genuinely self-employed. These individuals enrol in the Régimen Especial de Trabajadores Autónomos del Mar (Autónomos del Mar), paying their own Social Security contributions at the applicable self-employed rate (currently 31.4% of their chosen contribution base, rising to market-linked bases under the 2023 reform).

Self-employed crew invoice for their services with IVA at 21% and declare their net income under IRPF on the estimación directa basis, deducting their professional expenses (equipment, training, professional liability insurance, travel costs, etc.). An AEAT audit that concludes a nominally self-employed crew member is actually an employee will reclassify the relationship, requiring back-payment of Social Security contributions by the deemed employer.

Practical Crew Cost Calculation

Indicative only. Actual figures depend on contribution bases, applicable treaty relief, personal circumstances, and Social Security regime. These should not be relied on without specific payroll advice.