Paying abroad from a Portuguese company: withholding on dividends, interest, royalties and services, and how to use a treaty

A company with no seat, management or permanent establishment in Portugal is taxed here only on income obtained in Portugal (art. 4.º(2) CIRC). The Portuguese payer withholds, and for a recipient without a permanent establishment the withholding is final (art. 94.º(3)(b) CIRC): the recipient files nothing. The rate is the one in art. 87.º CIRC, and the tax is paid to the State by the 20th of the following month (art. 94.º(6) CIRC). The income may not leave the country until the tax is paid or secured (art. 132.º(1) CIRC).

Where the withholding is final, the recipient is only subsidiarily liable, so the Portuguese company is first in line (article 28 of the LGT). Without the relief papers by the deadline, the payer owes the full domestic tax (art. 98.º(5) CIRC; art. 101.º-C(5) CIRS). That is lifted if it later proves the conditions were met, but fines survive (art. 98.º(6) CIRC). Under the general rule of article 114 of the RGIT, they run from 100% to 200% of tax that was, or should have been, withheld and not paid over, or 15% to 50% if negligent; a missing Modelo 30 costs €150 to €3,750 (article 117 of the RGIT).

When a Portuguese resident pays, art. 4.º(3)(c) CIRC treats as Portuguese-source: IP and know-how, equipment, dividends, interest, directors’ fees, intermediation, and services “performed or used in Portuguese territory”, except transport, communications and financial activities. The company withholds on each (art. 94.º(1) CIRC).

That carve-back is the point groups miss: a management fee to a foreign parent is Portuguese-source wherever the work is done. For internet services the AT looks at where the servers are; in ruling 26296 of 13 October 2024, on Jira bought from Australia, their location was unknown, the service could not be shown to be performed wholly abroad, and 25% final withholding applied. Freelancers follow the same map: art. 18.º(1)(f) CIRS for services and (1)(d) for technical assistance, with art. 18.º(3) CIRS importing the carve-out.

Companies: art. 87.º(4) CIRC, 35% under art. 87.º(4)(i) CIRC. Individuals: art. 71.º(1)(a) CIRS and art. 71.º(4) CIRS, 35% under art. 71.º(17)(b) CIRS. * Our reading of art. 5.º(2)(m) CIRS.

The 35% is narrower than people assume. It applies to investment income: interest, profit distributions, royalties “not received by the author or original holder”, technical assistance, and the rental of equipment and computing capacity (art. 5.º(2) CIRS). Ordinary service fees to a listed jurisdiction stay at 25%. Monthly fees for work for a single payer are not withheld up to the minimum monthly wage, €920 in 2026, against the recipient’s written declaration (art. 71.º(5) and (6) CIRS), and EU and EEA residents can reclaim the excess over resident rates (art. 71.º(11) CIRS).

The list is Portaria 150/2004, as amended; Hong Kong, Liechtenstein and Uruguay left it on 1 January 2026. The UAE is still on it, with Bahrain, Qatar, Kuwait, Oman, Panama, Mauritius, Monaco, Gibraltar, the Channel Islands and the Isle of Man. Paying a listed recipient costs more than the withholding: the expense is not deductible unless shown to be real and not abnormal or excessive (art. 23.º-A(1)(r) CIRC), and it bears 35% autonomous taxation, ten points more in a loss year (art. 88.º(8) and (14) CIRC). That holds for a UAE company even when the treaty removes the withholding; we know of no ruling that these rules yield to the treaty. Compare Portugal, Spain and the UAE.

Dividends. A treaty-state parent’s rate must be at least 60% of the IRC rate. The consolidated art. 87.º(1) CIRC prints 17% while the 2026 rate is 19%; like our holding company analysis we use the year’s rate, 11.4%. That is open, but the UAE’s 9% fails either way and Swiss cantons near 11% to 12% are borderline. The year must be completed before the distribution. The proof must reach the payer before the profits are made available (art. 14.º(4) CIRC): a declaration confirmed by the parent’s tax authority and, for an Lda, a certidão permanente issued no earlier than the day of distribution (ruling 27100/2024).

Anti-abuse. Non-genuine arrangements lose the exemption (art. 14.º(17) CIRC). So, unless the taxpayer proves the arrangement genuine, does a distribution where the Portuguese company has not met its RCBE obligations or any declared beneficial owner is resident in a listed jurisdiction (art. 14.º(19) CIRC). Founders in Dubai holding through an EU company, take note. A Swiss parent has its own route: 25% held directly for two years (art. 14.º(8) CIRC).

Interest and royalties. The exemption fails for a recipient majority-owned by third-country residents unless the chain has no main purpose of cutting the withholding, and on any amount above arm’s length (art. 14.º(15) CIRC). Royalties here include software and equipment rental. The Mod. 01-DJR (Despacho 15598/2014) is valid for up to two years per contract (art. 98.º(3)(a) CIRC), and a recipient without a Portuguese tax number needs one, requested by the payer.

Holding thresholds are for a company recipient. France numbers its articles differently: dividends 11, interest 12, royalties 13. Equipment rental is a royalty under the US, German, French, Spanish, Dutch and Brazilian treaties, not the UK, UAE or Swiss ones.

Rates people get wrong. The UK’s 2025 treaty gives 0% from 2026 to a company holding 10% for a year (Article 10(3) of the Portugal–UK treaty); 10% and 15% were the 1968 rates. Spain’s 10% needs 365 days, a period added by the MLI (Article 10(2) of the Portugal–Spain treaty). For UK interest and royalties the treaty is the only relief: royalties go down to 5% (Article 12(2) of the Portugal–UK treaty).

Technical services: where the treaties part company. Brazil is the only one of the nine that treats technical services as royalties outright: Protocol point 5 brings them under Article 12(2) of the Portugal–Brazil treaty, at up to 15%. The US definition reaches technical assistance only where it relates to the application of the licensed right or property (Article 13(3) of the Portugal–US treaty), giving 10%; other technical or consulting services are business profits under Article 7 of the Portugal–US treaty, 0% without a permanent establishment. The Netherlands is similar: assistance connected with licensed rights is a royalty (Article 12(4) of the Portugal–Netherlands treaty), while the Protocol sends technical, consultancy and supervisory services to Article 7 or 14. The UK, German, French, Spanish and UAE definitions say nothing about technical services, so a fee falls under Article 7 unless it is in substance a payment for know-how. That boundary is our interpretation.

Anti-abuse and residence. The MLI principal purpose test applies to the French, Dutch and UAE treaties since 2021 and the Spanish one since 2023; not yet to the German, Swiss or Brazilian ones. The US treaty relies on limitation on benefits instead (Article 17 of the Portugal–US treaty); the UK has its own test (Article 27 of the Portugal–UK treaty). Under the UAE treaty a company must be incorporated and effectively managed in the UAE, and an individual domiciled there and a UAE national (Article 4(1)(b) of the Portugal–UAE treaty). A European living in Dubai cannot claim it.

If the UAE consultancy were characterised as technical assistance, the domestic rate would on our reading be 35%. The Brazilian freelancer bears 25% because Article 14 of the Portugal–Brazil treaty lets Portugal tax a fee paid by a Portuguese resident; if they work for the Lda alone and give the written declaration, only the €2,080 above the €920 minimum wage is withheld, which is €520 (art. 71.º(5) and (6) CIRS); a German one pays nothing here with a 21-RFI, given no fixed base and under 183 days in Portugal in the calendar year (Article 14 of the Portugal–Germany treaty). For the Dutch BV, Article 10(3) of the Portugal–Netherlands treaty switches the 10% cap off for dividends to which the Parent-Subsidiary Directive applies, and a 100% holding for over a year is such a case. Whether the cap returns when art. 14.º(19) CIRC blocks the exemption is open: 10% at best, 25% possible. The router withholds 25% and shows 10% as the best case.

With a treaty. In ruling 30252 of 13 May 2026, on a ChatGPT Plus subscription from a US supplier, the AT held that SaaS with remote access only, no transfer of IP and no licence to exploit it, is “in principle” business profits under Article 7, not a royalty: untaxed here with the 21-RFI and US certificate in time, and the Modelo 30 filed anyway. A licence to use copyright software, a download installed under licence or a transfer of exploitation rights can be a royalty. Standardised software for the buyer’s own use is business income; Portugal’s OECD observation and the Swiss protocol draw the royalty line at partial rights and adapted software.

Without a treaty, or without the form, SaaS is a service used in Portugal and bears 25% unless the supplier shows it was performed entirely abroad, which in ruling 26296 it could not. SaaS hosted wholly abroad may fall outside the source rules if that can be evidenced, but no ruling says so. Vendors invoice gross, so the Lda either grosses up or gets the form. Under the other eight treaties, 0% under Article 7 follows by analogy, on our reading. Hosting and computing capacity are, on the text, investment income (art. 5.º(2)(n) CIRS): Portuguese-source whoever performs them, outside the carve-out, 35% to a listed jurisdiction. We found no ruling on cloud services.

Long stays in Portugal raise a different question: see permanent establishment.

Every payer of income to non-residents files the Modelo 30 (art. 119.º(7)(a) CIRS, applied to companies by art. 128.º CIRC) by the end of the second month after payment. Portaria 98/2021 made it electronic only; errors left uncorrected for 30 days count as not filed. In ruling 6207/2018, repeated for SaaS in 2026, the AT says it shows all income paid to non-residents, including income relieved by a treaty. The payer keeps a register of recipients and the relief documents. The end-of-July deadline in older guides is the old regime.

For a dividend relying on art. 14.º(3), the proof is due before 10 March. Under the Netherlands treaty the refund window for dividends, interest and royalties runs to 31 December 2029. Other dates are in the reporting calendar.

VAT is separate. Services to a Portuguese business are taxed here wherever the supplier is (art. 6.º(6)(a) CIVA), with exceptions such as immovable property. With no supplier establishment here, the company itself is liable (art. 2.º(1)(e) CIVA) and deducts the VAT to the extent of its right of deduction (art. 19.º(1)(c) CIVA): usually 23%, self-assessed and deducted in the same return, form or no form. See our VAT and VIES guide.

The 2027 budget, Proposta de Lei 110/XVII/2.ª, is a bill until the final vote scheduled for 24 November 2026. On our digest and the EY tax alert, it amends neither the CIRC nor the VAT Code, and its IRS changes leave arts. 71.º and 101.º-C alone; our own extraction of the bill was partial. It would also lift the extra ten points of autonomous taxation in a 2027 loss year for some companies. Proposals, not law.

Open on 30 October 2026: the IRC rate for the 60% test; the refund form for late dividend-exemption proof; SaaS hosted abroad and cloud capacity; the 35% on royalties and technical assistance; arts. 23.º-A and 88.º against the UAE treaty; the German, Swiss and Brazilian MLI steps; the Netherlands 10% cap where art. 14.º(19) CIRC blocks a Directive-case dividend; whether the special fine noted on the AT’s page for article 114 of the RGIT (art. 27.º(5) of Lei 32-B/2002) still reaches failures to withhold on non-residents; the final 2027 budget.