How to Register for VAT (IVA) in Portugal (2026): A Step-by-Step Guide

TL;DR: To register for VAT (IVA) in Portugal, submit Form 1862 online via the Autoridade Tributária e Aduaneira (AT) portal before you exceed the €15,000 annual turnover threshold — or immediately if you are not eligible for the exemption. Registration activates your Portuguese VAT number (NIF/NIPC) for tax purposes.

Last updated: July 2026

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What Is VAT (IVA) in Portugal and Who Must Register?

Portugal's VAT — called IVA (Imposto sobre o Valor Acrescentado) — applies to the supply of goods and services, intra-EU acquisitions, and imports. Most businesses supplying taxable goods or services in Portugal must register once turnover exceeds €15,000 in a calendar year, or from day one if the exemption does not apply to their activity.

IVA is governed by the Código do IVA (CIVA) and administered by the Autoridade Tributária e Aduaneira (AT). The standard rate is 23% on the Portuguese mainland (Continente). Two reduced rates also apply:

Rate	Percentage	Applies To
Standard	23%	Most goods and services
Intermediate	13%	Food & drink in restaurants, wines, certain admissions
Reduced	6%	Basic foodstuffs, pharmaceuticals, books, passenger transport

Note: The Azores and Madeira autonomous regions apply lower rates — 16%/9%/4% and 22%/12%/5% respectively.

Businesses not eligible for the Article 53 CIVA exemption — including non-established foreign entities, businesses engaged in activities excluded from the exemption, and those voluntarily registering — must register from the first taxable transaction.

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The €15,000 Small-Business Exemption: Should You Register Voluntarily?

The Article 53 CIVA exemption allows sole traders and small businesses with annual turnover below €15,000 to operate without charging or remitting IVA. This threshold is unchanged for 2026. However, exempt businesses cannot recover input VAT on their purchases — a real cost for businesses with significant supplier invoices.

Key trade-off:

Situation	Article 53 Exemption	Voluntary VAT Registration
Charge IVA to customers	No	Yes
Recover input VAT on purchases	No	Yes
File periodic VAT returns	No	Yes
Issue certified invoices (SAF-T)	Still required	Required
Threshold	Under €15,000/year	Any turnover

Voluntary registration makes sense when:

• Your customers are VAT-registered businesses (B2B) — they recover the IVA you charge, so it does not deter them.
• You have significant input costs (equipment, imports, services from EU suppliers).
• You expect turnover to exceed €15,000 soon and want continuity.

Once you exceed the €15,000 threshold during a calendar year, you must register within 15 days of the month following the month you exceeded it.

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Documents Required for Portugal VAT Registration

Gathering the right documents before you start the online application prevents delays. The AT portal validates several fields in real time, so incomplete submissions are rejected immediately.

For individuals / sole traders (empresários em nome individual):

• Portuguese Tax Identification Number (NIF) — if you do not have one, obtain it first at a Finanças office or via a fiscal representative
• Proof of identity (Cartão de Cidadão or passport)
• Proof of address
• Description of business activity (CAE code — Classificação Portuguesa de Atividades Económicas)

For companies (sociedades):

• NIPC (corporate tax number, issued at incorporation)
• Commercial Register certificate (Certidão da Conservatória do Registo Comercial) — must be current
• Articles of association (pacto social)
• Identification of legal representative(s)

For non-resident / foreign businesses:

• Appointment of a fiscal representative resident in Portugal (mandatory for entities outside the EU/EEA, and strongly recommended for EU entities)
• Fiscal representative's NIF
• Certified copies of incorporation documents, apostilled where required
• Proof of economic activity in Portugal (contracts, invoices, or lease agreements)

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Step-by-Step: How to Register for VAT in Portugal

Portugal's VAT registration is handled entirely online through the AT portal (Portal das Finanças at portaldasfinancas.gov.pt). There is no paper-only route for most applicants.

Step 1 — Obtain your NIF or NIPC If you are a foreign individual or company without a Portuguese tax number, this is your first step. Individuals can apply at a Finanças office in person (or through a certified fiscal representative remotely). Companies receive their NIPC upon commercial registration.

Step 2 — Appoint a fiscal representative (if required) Non-EU/EEA businesses must appoint a Portuguese-resident fiscal representative before they can access the AT portal as a foreign entity. EU businesses are not legally required to do so but it is strongly advisable for practical compliance.

Step 3 — Access the AT portal Log in at portaldasfinancas.gov.pt using your NIF/NIPC and password (or Chave Móvel Digital for individuals). Navigate to: Serviços → IVA → Início/Alteração de Atividade.

Step 4 — Complete Form 1862 (Declaração de Início de Atividade)

• Select your activity commencement date.
• Enter your CAE code (primary and secondary activities).
• Declare your estimated annual turnover.
• Select your VAT regime: exemption (Article 53) or normal taxable person.
• Declare your expected filing frequency (monthly or quarterly — see below).
• Confirm the address of your principal place of business in Portugal.

Step 5 — Submit and receive confirmation The AT processes standard applications immediately. You will receive a confirmation reference number on screen and by email. Your VAT number is your NIF/NIPC — there is no separate IVA number issued in Portugal. You may begin issuing certified invoices from the date of registration.

Step 6 — Activate certified invoicing software From day one of registration, Portuguese law requires you to issue invoices using AT-certified invoicing software that generates SAF-T (PT) files. KARR's invoicing module applies the correct IVA rate as you post each transaction — standard (23%), intermediate (13%), or reduced (6%) — and compiles the SAF-T (PT) file automatically, ready for monthly or annual AT submission.

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VAT Return Filing: Monthly vs. Quarterly

Once registered, you must file periodic IVA returns (Declaração Periódica) and pay any tax due. The filing frequency depends on your annual turnover:

Annual Turnover	Filing Frequency	Deadline
≥ €650,000	Monthly	By the 20th of the 2nd month after the tax period
< €650,000	Quarterly	By the 20th of the 2nd month after the quarter ends

For example, a quarterly filer reporting Q1 (January–March) must submit and pay by 20 May.

AT requires the Declaração Periódica to be submitted electronically via the portal. Annual SAF-T (PT) files covering all invoices issued during the year must also be submitted — the deadline is typically the end of June for the prior year.

KARR prepares your periodic IVA return from the same ledger used to record daily transactions, flagging discrepancies — such as input VAT claimed on non-deductible expenses — before you file.

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SAF-T (PT) and E-Invoicing Obligations

Portugal has operated mandatory certified invoicing since 2010 and SAF-T (PT) reporting is a core compliance requirement — not optional. Every VAT-registered business must:

• Issue invoices only through AT-certified software (manual invoices are only permitted in exceptional, AT-approved circumstances).
• Communicate invoice data to AT in real time or monthly via the SAF-T (PT) XML file or the AT's webservice.
• Retain SAF-T (PT) files for 10 years (the standard Portuguese tax document retention period under the Lei Geral Tributária).

Non-compliance with certified invoicing can result in AT penalties under the Regime Geral das Infrações Tributárias (RGIT). The AT also cross-references SAF-T data against your Declaração Periódica, so errors in one are visible in the other.

KARR is built for SAF-T compliance: its offline-first PWA architecture means invoices are created and stored correctly even without an internet connection, then synced and exported in the required SAF-T (PT) XML format when connectivity is restored.

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Common Mistakes to Avoid

• Missing the 15-day registration window after exceeding the €15,000 threshold. AT can impose penalties under RGIT.
• Choosing the wrong CAE code — this determines which IVA rates apply and which simplified regimes are available.
• Claiming input VAT on exempt supplies — if you make both taxable and exempt supplies, you must apply the pro-rata (percentagem de dedução) rules under CIVA Article 23.
• Using uncertified invoicing software — even a single uncertified invoice is a RGIT infraction.
• Forgetting to file nil returns — if you have no transactions in a period, a nil Declaração Periódica is still required.
• Not updating your activity declaration when you add new activities or your turnover crosses the quarterly/monthly threshold.

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How KARR Supports Portugal VAT Compliance

KARR is cloud accounting software built for business owners without accounting backgrounds. For Portugal specifically:

• IVA rate application: KARR applies 23%, 13%, or 6% automatically based on the product or service category you select — using its "What Happened?" guided wizard so you never need to look up the rate manually.
• Threshold monitoring: KARR tracks your cumulative turnover against the €15,000 Article 53 threshold and alerts you before you breach it, giving you time to register proactively.
• SAF-T (PT) export: Generate the AT-required XML file directly from your KARR ledger — no manual data entry or third-party conversion tool needed.
• Periodic return preparation: KARR compiles Box 1 through Box 24 of the Declaração Periódica from your posted transactions, with anomaly detection flagging unusual input VAT claims before submission.
• Offline-first architecture: Issue certified invoices in areas with poor connectivity; data syncs automatically when online.

KARR is available from $0/month (Free plan), with Pro at $12/month and Business at $29/month.