Es Autonomous Worker

Spain Autónomo (Self-Employed Worker) Complete Obligations Skill v1.0

General reference only. This skill is general tax/accounting reference material for AI-assisted workflows. It has not been reviewed for any specific person's facts, documents, elections, deadlines, residency, filing status, or local procedures. Do not rely on it to file, pay, amend, or take a tax position without review by a qualified professional in the relevant jurisdiction.

Based on work by Nambu89 (Impuestify) and Pau March (larenta), licensed under MIT. Adapted for the OpenAccountants format.

Section 1 -- Quick Reference

Section 2 -- Cuota de Autónomos 2025: Cotización por Ingresos Reales

Since January 2023, self-employed workers pay Social Security (cuota de autónomos) based on actual income (rendimientos netos). The system has 15 brackets deployed gradually until 2032.

The 15 Contribution Brackets (Tramos) -- 2025

Contribution rate: 31.4% of chosen base de cotización (the contribution amounts above are the minimums -- workers can choose higher bases within their bracket for better future pensions).

How to Calculate Net Monthly Income (Rendimiento Neto)

For autónomos persona física in estimación directa:

1. Annual gross income (ingresos brutos)
2. MINUS deductible expenses (gastos deducibles)
3. MINUS 7% generic deduction (3% for autónomos societarios)
4. DIVIDE by 12 = Monthly net income (rendimiento neto mensual)

Key Rules

• 6 changes per year: You can change your contribution base up to 6 times annually to match income fluctuations
• Annual regularization: After year-end, TGSS compares actual income vs. chosen base. Overpayments are refunded; underpayments are collected (second half of following year)
• Autónomos societarios minimum: EUR 1,000/month base → EUR 314/month minimum contribution

Section 3 -- Tarifa Plana (Flat Rate for New Autónomos)

Standard Tarifa Plana (DA 52ª LGSS, RDL 13/2022)

Requirements

• Not registered as autónomo in the previous 2 years
• Not previously benefited from tarifa plana in the previous 3 years
• No outstanding debts with Seguridad Social or Hacienda
• NOT autónomo societario (company administrators excluded)
• Must apply at the moment of registration (alta)

Extended Tarifa Plana (24 months at EUR 80)

Available for:

• Workers with disability ≥ 33%
• Victims of gender violence
• Victims of terrorism

Important Notes

• Request is automatic when registering (mark the box in Modelo TA.0521)
• Cannot be requested retroactively
• Compatible with pluriactividad (working as both employed and self-employed)
• After tarifa plana ends, the normal bracket system applies

Section 4 -- Complete Fiscal Calendar for Autónomos

Quarterly Obligations

Annual Obligations

Additional Models (if applicable)

Section 5 -- Indirect Tax by Territory

IVA (Common Territory + Baleares)

IGIC (Canarias)

IPSI (Ceuta and Melilla)

Section 6 -- Net Take-Home Calculation (Sueldo Neto Autónomo)

Monthly Calculation Formula

Facturación bruta (without IVA)
+ IVA/IGIC/IPSI repercutido (charged to client)
= Total factura (amount on invoice)
- Retención IRPF (15% or 7% withheld by client, if applicable)
= Cobro efectivo (cash received)
- Cuota autónomos (Social Security)
- Gastos deducibles
= Neto mensual aproximado

IVA/IGIC/IPSI a pagar Hacienda = repercutido - soportado (on purchases)

Annual Calculation Formula

Facturación bruta anual
- Gastos deducibles anuales
- Cuota autónomos anual
- 5% gastos difícil justificación (max EUR 2,000, if simplificada)
= Base imponible IRPF

IRPF anual = Apply progressive brackets to base imponible
Neto anual = Facturación bruta - IRPF - Cuota SS - Gastos

Worked Example: IT Freelancer, Madrid, EUR 3,000/month billing

Monthly:
  Facturación bruta:            EUR 3,000
  + IVA 21%:                    EUR 630
  = Total factura:              EUR 3,630
  - Retención IRPF 15%:        EUR 450
  = Cobro efectivo:             EUR 3,180
  - Cuota autónomos (Tramo 9): EUR 320
  - Gastos deducibles:          EUR 200
  = Neto mensual estimado:      EUR 2,660

Annual:
  Facturación bruta:            EUR 36,000
  - Gastos deducibles:          EUR 2,400
  - Cuota autónomos:            EUR 3,840
  - Gastos difícil justificación: EUR 1,488 (5% × 29,760, < 2,000)
  = Base imponible:             EUR 28,272
  IRPF estimado (escala 2025):  ~EUR 5,600
  Neto anual:                   EUR 36,000 - 5,600 - 3,840 - 2,400 = EUR 24,160
  Neto mensual real:            EUR 2,013
  % neto sobre facturación:     ~67%

Note: The monthly "neto" from cash flow differs from the annual real neto because retenciones are prepayments that may result in refund or additional payment at year-end.

Section 7 -- Territorial Regime Classification

Ceuta/Melilla Sectors with 50% SS Bonification

• Agriculture, fishing, aquaculture
• Industry (except energy and water)
• Commerce, tourism, hospitality
• Other services (excluding air transport, building construction, financial/real estate activities)

Section 8 -- Types of Autónomo

8.1 Autónomo Persona Física (Standard)

• Most common: freelancer or sole trader
• Filed as individual IRPF taxpayer
• Can choose estimación directa simplificada (default) or normal
• Retención 15% (7% first 3 years) on professional invoices (Sección 2 IAE only)

8.2 Autónomo Societario

• Administrators/partners with ≥33% ownership who perform management
• Must register in RETA
• Minimum base: EUR 1,000/month (cuota mínima EUR 314/month)
• Cannot access tarifa plana
• Deduction for generic expenses: 3% (not 7%)
• Their income comes as nómina from the company (rendimientos del trabajo), NOT business income

8.3 Autónomo Colaborador (Family Member)

• Spouse or family member (up to 2nd degree) working regularly in the business
• Minimum base: SMI (EUR 1,000/month in 2025)
• Bonificación: 50% during first 18 months, 25% next 6 months
• Does NOT file their own Modelo 130/303 -- works under the main autónomo's business

8.4 Autónomo Económicamente Dependiente (TRADE)

• Derives ≥75% of income from a single client
• Must formalize the relationship with a written contract
• Specific protections under Estatuto del Trabajo Autónomo
• Tax obligations are the same as standard autónomo

Section 9 -- Registration Process (Alta de Autónomo)

Steps

1. Alta en Hacienda (Modelo 036 or 037): Register for tax obligations, select IAE epígrafe, choose estimation regime
2. Alta en RETA (Modelo TA.0521): Register with Social Security within 60 days before starting activity (or same day)
3. Licencia de actividad (if applicable): Some activities require local permits
4. Libro registro: Start maintaining income and expense records from day one

Key Decisions at Registration

Section 10 -- Deductible Expenses for Autónomos

Fully Deductible (with proper invoice)

Partially Deductible (Special Rules)

Gastos de Difícil Justificación (Simplificada only)

• 5% of rendimiento neto previo, maximum EUR 2,000/year
• Automatic reduction under estimación directa simplificada
• Covers expenses that are difficult to document but clearly business-related

Section 11 -- Obligación de Declarar (Filing Obligation)

Not all autónomos are obligated to file the annual Renta if their income is very low:

Autónomos are ALWAYS obligated to file Modelo 100 regardless of income level (Art. 96 LIRPF exception for rendimientos de actividades económicas).

Section 12 -- Conservative Defaults

PROHIBITIONS

• NEVER tell someone they can avoid paying cuota de autónomos if they are actively self-employed
• NEVER apply tarifa plana to autónomos societarios
• NEVER deduct client entertainment meals from IRPF
• NEVER apply the 7% generic deduction to autónomos persona física (it's 7% for them, 3% for societarios -- don't mix these up)
• NEVER confuse retenciones (tax prepayments) with expenses -- they are NOT deductible business expenses
• NEVER apply IVA to an autónomo in Canarias (they use IGIC) or Ceuta/Melilla (IPSI)
• NEVER forget that Modelo 130 is cumulative year-to-date (not just the quarter's income)
• NEVER apply the EUR 80 tarifa plana beyond month 12 without verifying income < SMI
• NEVER present cuota estimates as exact -- actual regularization happens the following year
• NEVER advise on baja (deregistration) without noting that this affects future tarifa plana eligibility

Disclaimer

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 asesor fiscal or equivalent licensed practitioner in your jurisdiction) before filing or acting upon.

The most up-to-date, verified version of this skill is maintained at openaccountants.com. Log in to access the latest version, request a professional review from a licensed accountant, and track updates as tax law changes.

Source: OpenAccountants — open tax Guides for AI, reviewed by named CPAs/CAs/EAs. Quality: source-cited draft. For always-current figures and named-accountant backing, connect the OpenAccountants MCP server (openaccountants-mcp).