Autoridade Tributária's Unidade dos Grandes Contribuintes Welcomes 950 New Entities for 2026 — Special Tax Supervision Now Reaches 4,012 Names

The Autoridade Tributária's special-supervision unit for large taxpayers — the Unidade dos Grandes Contribuintes (UGC) — now covers 4,012 entities on the 2026 list, up from roughly 3,062 on the prior reading. The 950 new names represent a 31% lift in a single cycle, and the additions are dominated by banks, insurance companies, investment funds and the holding entities of large economic groups — the strands the Ministry of Finance flagged as priority for the broadened oversight perimeter.

The UGC's Operating Frame

The UGC operates as the AT's dedicated compliance and audit arm for taxpayers whose tax footprint or sectoral profile warrants concentrated monitoring rather than the generic AT operational tape. Inclusion historically rested on three triggers — annual turnover above €200 million, declared tax above €20 million, or supervision by the Bank of Portugal or ASF (Autoridade de Supervisão de Seguros e Fundos de Pensões) regardless of size. The 2026 broadening introduces additional criteria covering related parties, certain non-financial holding structures, and a tighter perimeter around investment-fund management vehicles — the changes the Ministry of Finance tabled to bring the Portuguese framework closer to the OECD's Large Business and International programme standard.

What the 950 New Entries Are

The composition of the additions reads heavy on the financial-sector tape. Newly supervised entities include credit institutions previously below the size threshold, insurance brokers and re-insurance vehicles, the operating shells of private-equity and real-estate investment funds (FIIs and Sociedades de Investimento Imobiliário) and a meaningful block of related-party special-purpose vehicles used in cross-border holding structures. Beyond financials, the list takes in additional industrial holdings whose consolidated revenue has crossed the €200 million line through M&A and organic growth in the 2024–2025 window.

Why the Broadening

The structural rationale is twofold. First, the AT has been building out its data-matching capability — the e-fatura cross-checks, the SAF-T PT submissions and the new cooperação reforçada framework with the BdP supervisory file all rely on a wider, more granular dataset that the UGC's concentrated audit teams can interrogate. Second, the post-2022 EU DAC7 and DAC8 rounds expanded the AT's information-sharing obligations on cross-border income, digital-platform operators and crypto-asset service providers — and the UGC perimeter is the operational layer through which those obligations are met for the Portuguese book.

What Concentrated Supervision Means

UGC inclusion does not raise tax owed; it raises the operational intensity of the relationship. UGC-supervised taxpayers face dedicated AT account managers, accelerated audit cycles, requirements to file consolidated cooperative-compliance positions on contested items, and an expectation of advance discussion on material transactions. The trade-off — and the reason most large groups have historically accepted the UGC tag — is faster reimbursements on VAT and IRC credits, clearer transfer-pricing pre-approvals and a more predictable settlement timeline on disputes that would otherwise spend years inside the Centro de Arbitragem Administrativa or the administrative-tax courts.

What This Means for Expats — The Bottom Line

• The UGC perimeter does not include individual taxpayers under the standard residence framework. Personal IRS filings — including non-habitual-resident, IRS Jovem and standard residence regimes — sit on the regular AT operational tape, not the UGC. The unit's perimeter is corporate, fund-vehicle and a small number of very-high-net-worth individuals on the separate Grandes Contribuintes Singulares tape.
• If you operate a Portuguese-incorporated company that crossed €200 million in revenue or €20 million in tax in the last cycle, the 2026 perimeter likely now covers you. The AT communicates UGC inclusion directly to the entity through the e-Fatura/AT portal; the operational change is the account-manager designation and the move to consolidated cooperative compliance.
• The broader perimeter implies more scrutiny on holding structures used by foreign-resident investors. Sociedades por Quotas, SGPS and FII vehicles that sit above the new related-party thresholds are now in scope for direct UGC interrogation — and transfer-pricing files, royalty flows and cross-border financing arrangements will face faster audit cycles.
• UGC inclusion is not a Black-list signal. The unit's positioning is that of an enhanced relationship between the AT and the country's most economically significant taxpayers — and several of Portugal's largest groups have publicly advocated for inclusion as a route to predictable settlement timelines.

The Ministry of Finance publishes the consolidated list of UGC-supervised entities in the Diário da República at the start of each calendar year; the 2027 reading lands in early January.