Sindicato dos Trabalhadores dos Impostos

What Sindicato dos Trabalhadores dos Impostos does

STI - Sindicato dos Trabalhadores dos Impostos is a Portuguese labor union founded in 1977 that exclusively represents workers of the Autoridade Tributária e Aduaneira (AT), Portugal's Tax and Customs Authority. The union serves both active AT employees (Tax Inspectors, Tax Administration Technicians, Customs Officers, Chief Financial Officers, and support staff) and retired AT members, providing collective bargaining representation, legal support, professional training, health insurance programs, and social benefits administered through the Fundo de Ação Social (FAS) and Fundo Social de Emergência (FSE). STI is governed by a Congress, General Council, and elected National Direction, with a delegate network stationed across tax and customs offices in all districts of Portugal.

The union's business model is a non-profit membership-fee structure with no disclosed revenue figures. STI generates income from member subscriptions and reinvests it in representation, social programs, training, communications (including its Revista Sociedade e Fiscalidade magazine), and member events. Its go-to-market is primarily grassroots — recruiting and retaining members via a delegate network, congresses, conferences, in-person gatherings, social media (Facebook, LinkedIn, Instagram), a member-only portal (Área Reservada), email bulletins, and periodic strike and demonstration activity to advance collective bargaining positions with the Portuguese government. STI has no commercial product lines, no technology platform, and no AI offerings; it operates as a traditional sectoral union with a lean staff of 9 employees based at its Lisbon headquarters.

The union has demonstrated sustained mobilization capacity, including a major three-day strike in December 2013 with national participation, recurrent protest campaigns in 2021, 2023, and 2024, and ongoing engagement with policy issues such as tax fraud combat, SIADAP reform, and AI's impact on AT work. Strategic partnerships with academic institutions (Universidade Autónoma de Lisboa, Instituto Politécnico de Leiria) and healthcare providers (IMT – Instituto de Medicina Tradicional) extend the union's programming into professional training and workplace wellness colloquiums. STI is not an investment-grade commercial entity; its governance is member-driven, with elections for the National Direction scheduled for September 2026 and the XVII Congress held in April 2026.

Name

Sindicato dos Trabalhadores dos Impostos

Legal name

STI - Sindicato dos Trabalhadores dos Impostos

Website

https://stimpostos.pt

Company type

Private

Founded year

1977

Operating status

Operating

Headcount range

1–10 employees

Short description

STI is a Portuguese non-profit trade union founded in 1977 that exclusively represents workers of the Autoridade Tributária e Aduaneira, providing collective bargaining, legal aid, social benefits, training, and health insurance to active and retired AT employees across Portugal.

Ownership category

akta.pro rank

Headquarters

HQ city

Lisboa

HQ country

Portugal

HQ region

Europe

Offices1 record

Markets served

GTM type

B2C

Offering type

Services

Cost components

Personnel, Operations, Others

Distribution channels1 record

Marketing channels5 records

Core offering

STI is a labor union that represents workers of the Portuguese Tax and Customs Authority (Autoridade Tributária e Aduaneira). It provides collective bargaining, legal advice, social benefits through the Fundo de Ação Social (FAS) and Fundo Social de Emergência (FSE), health insurance (STI/MÉDIS), professional training, and a member-only online portal, financed through membership fees.

Product overview

STI - Sindicato dos Trabalhadores dos Impostos is a labor union representing workers from Portugal's Tax and Customs Authority (Autoridade Tributária e Aduaneira - AT). The union provides services to its members including legal support, health insurance (STI/MÉDIS), social benefits through the Social Action Fund (FAS) and Social Emergency Fund (FSE), training programs, and a member-only portal (Área Reservada). The organization also publishes newsletters, informational notes, press releases, and a magazine (Revista Sociedade e Fiscalidade) to communicate with members. As a labor union rather than a technology company, STI does not offer software products or platforms.

Differentiator

Problem solved

Functional benefit

Products and services

• Professional Representation and Collective Bargaining Core trade union service: representing AT workers in collective bargaining with the Portuguese government on salary, working conditions, career progression, and professional dignification, including the organization of strikes and public demonstrations.
• Legal Support and Advice Provision of legal advice and support to members on employment-related matters, including FAQ: Apoio Jurídico.
• Social Benefits — Fundo de Ação Social (FAS) and Fundo Social de Emergência (FSE)
• STI/MÉDIS Health Insurance Group health insurance program negotiated by STI for its members, addressing the FAQ: Seguro de Saúde category.
• Professional Training and Development Programs Training and professional development activities offered to members, including the Formação section on the STI website.
• Revista Sociedade e Fiscalidade (STI Magazine) Periodical publication by STI providing news, analysis, and updates to members, available under the Atividade Sindical → Revista section.
• Member-Only Portal (Área Reservada) Reserved member area on stimpostos.pt providing authenticated access to member-specific resources and services.
• Congresses, Conferences and Member Gatherings In-person events such as statutory meetings, congresses, conferences (e.g., "Artificial Intelligence and the Future of Work"), and member encounters providing networking, governance, and professional development.

Segments2 records

Ideal customer profiles2 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Three partnerships are on record, tiered minor.

• IMT – Instituto de Medicina TradicionalminorStrategic or Co-development PartnerPartnership for conducting free health screenings including Acupuncture and Osteopathy during the "Saúde no Trabalho, Gestão do Stress e Motivação" colloquiums.
• Universidade Autónoma de LisboaminorStrategic or Co-development PartnerCollaboration for the 5th edition of the "Saúde no Trabalho, Gestão do Stress e Motivação" colloquium held at Metro de Lisboa auditorium.
• Instituto Politécnico de LeiriaminorStrategic or Co-development PartnerCollaboration for the colloquium "OS NOVOS DESAFIOS DA FISCALIDADE" (The New Challenges of Taxation).

Scale indicators1 record

Recent moves6 records

Expansion highlights4 records

Regional players

• PCS (Public and Commercial Services Union): UK union representing HMRC and other public sector workers. Comparable to STI in representing tax authority staff within a broader public sector membership, though UK-based.
• NTEU (National Treasury Employees Union): Independent US union representing IRS and other federal tax/finance workers. Closely comparable to STI in its single-sector focus on tax authority employees, but operates in a different geography (US).

Direct peers

• FESAP (Federação de Sindicatos da Administração Pública): Federation of Portuguese public administration unions. Comparable to STI as a public-sector labor organization umbrella, though at a federation level aggregating multiple affiliate unions.
• UGT (União Geral de Trabalhadores): The second major Portuguese trade union confederation. Comparable to STI in function (worker representation, collective bargaining, member services) but broader scope across sectors and an affiliated union network.
• SINTAP (Sindicato dos Trabalhadores da Administração Pública): Portuguese union representing central public administration workers. Comparable to STI in serving public sector employees with similar services (legal, social benefits, professional representation).
• STAL (Sindicato Nacional dos Trabalhadores da Administração Local): Portuguese union representing local public administration workers. Highly comparable to STI as a sector-specific public sector union providing collective bargaining, legal support, and member services.
• CGTP-IN (Confederação Geral dos Trabalhadores Portugueses): Portugal's largest trade union confederation. Directly comparable as a labor union organization representing Portuguese workers, though at a confederation level rather than a single-sector union like STI.
• STE (Sindicato dos Quadros Técnicos do Estado): Portuguese union for state technical and managerial staff. Comparable as a specialized union representing a defined public-sector professional category with similar advocacy and service model to STI.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/stimpostos
• Instagraminstagram.com/stimpostos
• LinkedInlinkedin.com/company/stimpostos

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Sindicato dos Trabalhadores dos Impostos