Illustrative calculation for €50,000 gross annual income.
Self-employed person, simplified regime (trabalhador independente, regime simplificado)
A 0.75 income coefficient (75% taxable) then progressive IRS (12.5–48%), plus 21.4% Social Security on a 70% base.
| Income tax (IRS) | €8,878 |
| Social Security (21.4% on 70% base) | €7,490 |
| Total tax & contributions | €16,368 |
| Effective rate | 32.7% |
| Net income | €33,632 |
Assumptions
- Simplified-regime coefficient 0.75 for Article 151 services (25% deemed expenses); the partial expense-justification rule is not modelled
- Year 1: CIRS art. 31.º n.º 10 reduces the 0.75 coefficient by 50% (taxable 37.5% of gross); year 2 by 25% (taxable 56.25%); year 3+ full 75%
- Year-1/2 coefficient reduction assumes no category A/H income and no activity cessation in the prior 5 years (statutory conditions)
- Progressive IRS on the coefficient-adjusted income (single person, no other income or deductions)
- Social Security 21.4% on a 70% relevant-income base (14.98% of gross), with the base capped at 12×IAS/month (IAS 2026 €537.13); minimum base not modelled
- Year 1: 12-month Segurança Social contribution exemption from first enquadramento (SS = €0); year 2+ full SS
- Effective rate is total tax and contributions over gross revenue
Sources
- PwC: Portugal, Individual, Taxes on personal income
- Autoridade Tributária: CIRS art. 31.º (regime simplificado; n.º 10 year-1/2 coefficient)
- Segurança Social: trabalhadores independentes (contribuições)
- PwC Portugal: Guia Fiscal 2026, Segurança Social (12×IAS ceiling, IAS €537.13)
- PwC: Portugal, Individual, IFICI (tax incentive for scientific research and innovation)
Who it's for
- Self-employed services professional under the simplified regime
- Annual gross income under €200,000 (above it, the organised-accounts regime applies)
- The regime for those who do NOT qualify for IFICI