Portuguese Tax and Business Terms Explained

RCBE

Registo Central do Beneficiário Efetivo · Central Register of Beneficial Owners

Portugal's central register of beneficial owners, part of EU anti-money-laundering rules. Every Lda (and almost every company) must declare who ultimately owns and controls it, update it within 30 days of any change, and confirm it by 31 December unless it was already updated that year and nothing has changed since.

NIF

Número de Identificação Fiscal · Tax Number

Portugal's 9-digit tax identification number, required for every tax-related interaction from opening a bank account to issuing an invoice.

Portal das Finanças

Tax Authority Portal

The Portuguese tax authority's online portal where freelancers issue Recibos Verdes, file tax declarations, register invoice series, and manage their tax obligations.

CAE

Classificação Portuguesa de Atividades Económicas · Economic Activity Code

The Portuguese classification code for economic activity (CAE-Rev.4 since 2025). Declared when you open your business activity, alongside or instead of an Art. 151 CIRS activity code.

Trabalhador Independente

Self-Employed Worker

The Portuguese term for an independent worker or sole entrepreneur, the equivalent of a freelancer or sole trader in other countries.

Chave Móvel Digital

Digital Mobile Key

Portugal's government digital authentication system. A username and password backed by a one-time code sent to your phone. Used to log in to Portal das Finanças, Segurança Social Direta, and other government portals.

Tax Authority Portal

Portal das Finanças

The English name for Portugal's Portal das Finanças, the online platform where freelancers issue invoices, file tax returns, and manage their relationship with the tax authority.

Comprovativo de Início de Atividade

Proof of Activity Registration

The proof the Portuguese tax authority (AT) issues when you submit your declaração de início de atividade, the declaration filed before starting an activity. It proves what was declared when the activity opened.

NIPC

Número de Identificação de Pessoa Coletiva · Company Tax Number

Portugal's 9-digit tax identification number for companies and legal entities, the corporate equivalent of a personal NIF.

Cessação de Atividade

Closing Your Freelance Activity

The formal declaration to the Portuguese tax authority (AT) that you have stopped your self-employment activity. It is due within 30 days of the date you stopped, and until it is filed AT normally treats your activity as open.

Abertura de Atividade

Opening Activity

The process of registering as a sole trader (trabalhador independente) with the Portuguese tax authority, officially starting your freelance activity.

Opening Activity

Abertura de Atividade

The English term for registering as self-employed in Portugal, the formal step that lets you issue invoices and sets the date your Social Security contributions start.

IRS

Imposto sobre o Rendimento das Pessoas Singulares · Personal Income Tax

Portugal's personal income tax: the annual tax that solo entrepreneurs pay on their individual income, declared each spring for the previous year's earnings.

CIRS 1320

Consultores (CIRS Art. 151) · Consultants (CIRS Art. 151)

The CIRS Art. 151 activity code for consultants working as individual freelancers in Portugal. Carries the 0.75 simplified-regime coefficient. Covers business, management, IT, and strategy consultants issuing Recibos Verdes.

Double Taxation Agreement

Acordo para Evitar a Dupla Tributação · Double Taxation Agreement / Tax Treaty

A bilateral treaty between Portugal and another country that prevents the same income from being taxed twice. Defines which country has the right to tax each income type and how relief is applied.

VAT

IVA

Value-Added Tax, a consumption tax on goods and services used across the EU. In Portugal it's called IVA and charged at 23% (standard rate) on the mainland.

CIRS

Código do Imposto sobre o Rendimento das Pessoas Singulares · Personal Income Tax Code

The Portuguese code governing personal income tax (IRS). Its Art. 151 refers to the table of professional activity codes that individual freelancers register under.

Withholding Tax

Retenção na Fonte

A percentage of income tax that a client with organised accounting (every Portuguese company) deducts from payments to freelancers and sends directly to the tax authority, as an advance on the freelancer's IRS.

Retenção na Fonte

Withholding Tax

Income tax that a client with organised accounting (every Portuguese company) withholds when it pays a solo entrepreneur for services, and sends directly to the tax authority as an advance on the freelancer's IRS.

Isolated Act

Ato Isolado

The English name for Ato Isolado: a one-off invoice for occasional income in Portugal, issued without needing to register as a sole trader.

Anexo J

Annex J: Foreign Income

The IRS annex for declaring income earned outside Portugal: employment, dividends, interest, rental income, or capital gains from other countries. Required for tax residents with any foreign income.

Reverse Charge

Autoliquidação do IVA

A VAT mechanism where the buyer, not the seller, accounts for VAT. Standard for B2B services supplied to businesses in other countries, inside the EU and beyond.

Ato Isolado

Isolated Act

A one-off invoice issued through the Portal das Financas by someone who is not registered as a sole trader. Used for occasional, non-recurring income in Portugal.

AT Fines

Multas AT · AT Fines (Tax Authority Penalties)

Financial penalties (coimas) issued by the Portuguese tax authority (AT) for late or missing tax filings, undeclared income, or invoicing violations. Governed by RGIT; voluntary disclosure before AT notifies you significantly reduces the penalty.

Regime Simplificado

Regime Simplificado de Tributação · Simplified Tax Regime

Portugal's simplified IRS regime for self-employed individuals, where taxable income is calculated using fixed coefficients applied to gross revenue. Companies have a separate simplified regime under IRC.

Nota de Liquidação

Tax Assessment Notice

The official IRS tax assessment AT issues after processing your Modelo 3 declaration. It shows the tax calculation: what you owe or are owed.

Anexo H

The IRS annex for tax benefits and personal deductions: health expenses, education, housing, and e-fatura credits. Pre-filled from e-fatura data and AT records. Every filer with deductible personal expenses completes Anexo H.

CIRS 1519

Outros Prestadores de Serviços (CIRS Art. 151) · Other Service Providers (CIRS Art. 151)

The catch-all activity code in the CIRS Art. 151 table for individual freelancers providing services not covered by a more specific code. Carries the 0.35 simplified-regime coefficient, not the 0.75 that applies to most listed professions.

Modelo 3

IRS Tax Return Form

The official Portuguese personal income tax return form. Filed annually between April and June for the previous year's income. Consists of a cover page (Rosto) plus annexes based on your income sources.

Isenção do Artigo 53.º

Article 53 VAT Exemption

The VAT exemption under Article 53 of the Portuguese VAT code (CIVA) for small businesses and freelancers earning below the annual revenue threshold.

Anexo B

Annex B: Self-Employment Income (Simplified Regime)

The IRS annex where solo entrepreneurs on the simplified regime declare their self-employment income (Category B). Contains your gross revenue by kind of activity, withholding tax, and activity codes.

CIRS 1313

Analistas de Sistemas (CIRS Art. 151) · Systems Analysts (CIRS Art. 151)

The CIRS Art. 151 activity code for systems analysts working as individual freelancers in Portugal. Carries the 0.75 simplified-regime coefficient, identical to CIRS 1332 (programmers) and other listed professions.

IRS Automático

Automatic IRS Return

AT's pre-filled IRS return (declaração automática de rendimentos). It covers wages (Cat. A) and pensions (Cat. H), and also some self-employment income (Cat. B) under narrow conditions.

Declaração Recapitulativa

Recapitulative Statement

The VAT statement that lists the business customers a Portuguese taxpayer supplied in other EU member states: intra-EU supplies of goods, and services taxed in the customer's member state. It is filed monthly or quarterly, separately from the periodic VAT return.

Deduções Específicas

Specific Deductions

IRS deductions applied to each income category before tax rates are calculated. For Category B (self-employment), the simplified regime's deemed cost coefficient acts as the specific deduction. For Category A employees, there's a fixed deduction of €4,462 or actual mandatory contributions if higher.

e-Fatura

Electronic Invoice System

Portugal's electronic invoice system that automatically tracks purchases linked to your NIF. Used for tax deductions: if your NIF isn't on the receipt, the invoice is not linked to you unless you register it yourself.

Coeficiente do Regime Simplificado

Simplified Regime Coefficient

The multiplier that determines how much of your gross income is taxable under the IRS simplified regime. The rest is treated as deemed business costs, and the multiplier depends on the type of activity.

Categoria B

Category B: Business and Professional Income

The IRS income category for self-employment income in Portugal. Covers freelancers, sole traders, and independent professionals. Declared in Anexo B of the Modelo 3 IRS return.

Personal Income Tax

IRS

The English name for IRS (Imposto sobre o Rendimento das Pessoas Singulares): the annual tax on individual income in Portugal, including freelance and self-employment earnings.

Despesas Dedutíveis

Deductible Business Expenses

Under Portugal's simplified tax regime (regime simplificado), freelancers do not deduct actual expenses. Instead, a fixed percentage of gross income is treated as assumed business costs. The catch: if documented business expenses fall below 15% of gross income, the taxable amount increases.

Article 53 VAT Exemption

Isenção do Artigo 53.º

The English term for the Portuguese VAT exemption that lets freelancers earning below the annual threshold operate without charging, filing, or deducting VAT.

Imobilizado

Long-term assets (fixed assets)

Portuguese accounting term for long-term business assets: non-current assets that a business keeps and uses rather than sells or uses up, such as computers, equipment, vans, and furniture. Distinguished from inventory (held for resale) and consumables (used up within the year).

Agregado Familiar

Household Composition

Your household for IRS purposes: you, your spouse or unido de facto partner, and your dependents, as they stood on the last day of the tax year.

IRS Jovem

Youth Income Tax Relief

A Portuguese tax benefit for workers aged 35 or under that reduces IRS on employment and self-employment income for up to 10 years, counted from your first year of income. Progressive exemption that starts high and decreases over time.

IVA

VAT

Imposto sobre o Valor Acrescentado, Portugal's value-added tax, charged on most goods and services. The standard rate on the mainland is 23%.

IRC

Imposto sobre o Rendimento das Pessoas Coletivas · Corporate Income Tax

Portugal's corporate income tax on company profits, with a standard rate and reduced rates for qualifying SMEs and certified startups on the first €50k of taxable income. The IRC simplified regime can bring the effective rate down significantly for service companies.

NHR Regime

Regime dos Residentes Não Habituais · Non-Habitual Resident Tax Regime

A Portuguese tax regime that offered qualifying new residents a flat 20% rate on professional income for 10 years. Replaced by IFICI (NHR 2.0) for applications from 2024 onward. Existing NHR holders keep their status.

Credit Note

Nota de Crédito

The English name for Nota de Crédito, a certified document that reverses all or part of an issued invoice when the amount or the VAT changes. Cancelling the invoice is a separate act.

Fatura

Invoice

A formal invoice issued through certified software or the AT portal.

SAF-T

SAF-T (PT) · Standard Audit File for Tax

A standardized XML file containing all of a business's transaction data for a period. The Portuguese format is SAF-T (PT).

Unique Document Code

ATCUD

The English term for ATCUD, the unique identifier on every Portuguese invoice that lets anyone verify the document's authenticity with the tax authority.

Proforma Invoice

Fatura Proforma

A commercial document that looks like an invoice but has no fiscal or legal meaning, essentially a detailed quote that doesn't create any tax obligation.

Recibo Verde

Green Receipt

A combined invoice-receipt (fatura-recibo) issued by solo entrepreneurs in Portugal through the Portal das Finanças when they receive payment for services.

ATCUD

Unique Document Code

AT Code Unique Document: the unique identifier required on every invoice and receipt in Portugal, combining a validation code from the tax authority with a sequential number.

Nota de Crédito

Credit Note

A certified fiscal document that corrects or partially reverses a previously issued invoice. Required in Portugal because invoices cannot be edited or deleted once issued.

Invoice-Receipt

Fatura-Recibo

The English term for fatura-recibo: a combined invoice and payment confirmation used by Portuguese freelancers, issued only when payment has been received.

Green Receipt

Recibo Verde

The English name for Recibo Verde, a combined invoice-receipt that solo entrepreneurs in Portugal issue through the tax portal when they receive payment.

Fatura-Recibo

Invoice-Receipt

A combined invoice and receipt document issued by Portuguese solo entrepreneurs when payment is received, the document type behind the Recibo Verde system.

Declaração Trimestral

Social Security Declaration

The quarterly income report that self-employed workers (trabalhadores independentes) on the quarterly regime file with Social Security (Segurança Social) to set their monthly contributions for the following quarter.

IAS

Social Support Index (Indexante dos Apoios Sociais)

A reference value Portuguese law uses to set Social Security thresholds and several tax limits. Many freelancer and gerente contribution rules are expressed as a multiple of the IAS rather than a fixed euro figure, so the amounts move when the index is revised.

Social Security

Segurança Social

Portugal's mandatory social contribution system for solo entrepreneurs. Covers healthcare, sick leave, parental leave, and pensions, funded by a percentage-based contribution on declared income.

Social Security Declaration

Declaração Trimestral

The English term for the quarterly income report filed with Portuguese Social Security, used to calculate freelancer contributions for the following quarter.

Anexo SS

Annex SS: Social Security

The IRS annex that reports your self-employment income to Social Security. Mandatory for all trabalhadores independentes filing IRS, even if exempt from contributions.

Segurança Social

Social Security

Portugal's social security system. Solo entrepreneurs contribute a percentage of declared income to fund healthcare, sick leave, parental leave, and retirement pension.

IES

Informação Empresarial Simplificada · Simplified Business Information

An annual filing obligation for Portuguese companies (Lda, SA) combining accounting, tax, and statistical reporting into one electronic submission. Due by July 15 of the following year.

Sociedade por Quotas

Private Limited Company (quota-based)

The most common Portuguese company form for small businesses. Its capital is divided into quotas, one per owner, rather than tradeable shares. The single-owner version is the Unipessoal Lda. Minimum capital is one euro per quota.

Contabilista Certificado

Certified Accountant

A certified accountant registered with the Ordem dos Contabilistas Certificados (OCC). Required by law for companies and for sole proprietors on the normal regime, but not for the simplified regime.

Deliberação dos Sócios

Shareholders' Decision

A formal decision taken by a company's owners, such as approving the accounts or distributing profit. The decision is recorded in an ata, which is its legal proof.

Gerente

Managing Director

The person who manages a Portuguese Lda and represents it legally. Their appointment and pay are decided by the owners and recorded in an ata. Even an unpaid gerente triggers a minimum Social Security contribution.

VIES

VAT Information Exchange System

The EU's free online tool for verifying VAT numbers. Confirms whether a business is VAT-registered and, in Portugal's case, reveals the name and address behind the number.

Ata

Minutes (of a company decision)

A written record of a single company decision, such as approving the accounts or distributing profit. Atas are stored in the company's livro de atas and are the legal proof that the decision was made.

Revisor Oficial de Contas

Statutory Auditor

A statutory auditor registered with the Ordem dos Revisores Oficiais de Contas (OROC) who independently audits and certifies a company's accounts. Required only for larger companies and all SAs, not for small Ldas, which need only a contabilista certificado.

Livro de Atas

Book of Minutes

The official record where a Portuguese company logs the decisions of its owners. Every company must keep one, including a single-owner Unipessoal Lda. It can be a physical book or a digital one, and it is the legal proof that a decision was actually made.