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How to Open Recibos Verdes Activity at Finanças (2026)

Exact walkthrough of opening freelance activity at Portal das Finanças. Activity codes (art. 151 or CAE), IVA decisions, the 12-month SS exemption, what to do same-day.

By Andrew Kovalenko · · 8 min read · Human-written
Contents
  1. What “opening activity” actually does
  2. The 8-step walkthrough
  3. What happens next (automatically)
  4. Common mistakes
  5. Closing activity (cessação)
  6. What to do same-day after opening
  7. Sources

Opening freelance activity (início de atividade) at Portal das Finanças is the single act that converts you from “person with a NIF” to “person who can legally invoice clients in Portugal”. It’s free, takes about 15 minutes online, and triggers two automatic benefits that save €5,000-€10,000 in the first year.

This guide is the exact step-by-step process for 2026, with screenshots of the key screens.

What “opening activity” actually does

The single registration triggers four things automatically:

AT registration

Cat B

You can issue recibos verdes

SS registration

Auto

Communicated by AT to Segurança Social

12-month SS exemption

Free

Automatic if first time

First IRS year-1

−50%

Reduces taxable base if you're not a Cat A taxpayer

You don’t need to file separate paperwork at Segurança Social or anywhere else. The AT registration is the only entry point.

The 8-step walkthrough

Log in at Portal das Finanças ↗

Go to portaldasfinancas.gov.pt and click “Aceda ao Portal” in the top-right. Use your NIF + password.

If you don’t have a password: click “Pedir senha”, fill the form, and AT will mail it physically to your registered address (~5 working days). There’s no email or SMS option - it’s mail-only. Plan for this delay.

portaldasfinancas.gov.pt
Portal das Finanças NIF · 123 456 789

Aceda ao Portal

NIF

Número de identificação fiscal

Senha

••••••••

Pedir senha Cartão de cidadão Aceder

Schematic - actual UI may differ. Illustrates layout, not exact pixels.

Login at portaldasfinancas.gov.pt. NIF + senha is the most common path; senha is requested via mail (~5 working days).

Navigate to 'Início de Atividade'

Once logged in, search “Início de atividade” in the top search bar (or navigate via Cidadãos → Início de Atividade). Click “Entregar Declaração” to start the form.

This is the same form used for both new freelance activity and re-opening (re-início). If you’ve had freelance activity in the past 5 years, the system will detect it and your year-1 IRS reduction won’t apply - but the form is the same.

Choose your activity code (art. 151 table or CAE)

This is the most consequential decision, and it isn’t a free choice: the code has to describe what you actually do.

  • If your profession is on the art. 151 table - the CIRS list of professions, from programmers and designers to consultants, engineers, translators, doctors and teachers - you register under that 4-digit code. Its income goes in Anexo B field 403 and 75% of it is taxable (the 0.75 coefficient).
  • If it isn’t on the table, you register with a CAE code instead. Services then count at 0.35 (field 404); sales, restaurants and hotels at 0.15. See the recibos verdes guide for how the coefficients work.
  • 1519 “Outros prestadores de serviços” is the table’s catch-all, for purely service work that no specific code describes. Using it when a specific code exists is a wrong registration.

The profession behind the code also decides whether your income can qualify for IFICI (see the HVAA list).

Codes expat freelancers use most (all 0.75):

  • 1332 - Programadores informáticos (software, web and mobile developers)
  • 1313 - Analistas de sistemas (systems analysts)
  • 1336 - Designers (graphic, UX/UI, product and web design)
  • 1320 - Consultores (management, business and IT consultants)
  • 1334 - Tradutores (translators)
  • 4013 / 4014 - Contabilistas / Economistas
  • 8011 / 8012 - Formadores / Professores (trainers and teachers)

Not sure which one matches your work? The art. 151 code finder takes a job title in English and returns the code and its coefficient. If you do several things, pick the code for your main activity; you can add secondary ones on the same form.

portaldasfinancas.gov.pt
Portal das Finanças NIF · 123 456 789

Cidadãos › Atividade › Início de atividade

Atividade exercida

Código CIRS (tabela do art. 151.º)

1332 - Programadores informáticos ▾

Código CAE

-

Atividades secundárias (opcional)

-

Data de início

01-01-2026

Voltar Próximo: IVA

Schematic - actual UI may differ. Illustrates layout, not exact pixels.

Activity selection. A profession on the art. 151 table goes in under its CIRS code; a CAE code is for activities that aren't on the table.

Set your expected annual income

AT asks for an expected gross annual income (volume de negócios previsível). This determines:

  • Whether you’re below the IVA exemption threshold (€15,000 for 2026)
  • Initial Social Security contribution base estimate

Be realistic but conservative. You’ll declare actual income quarterly to Segurança Social anyway. Most first-time freelancers underestimate their first year - that’s fine, the contribution base is recalculated each quarter based on actual income.

Choose your IVA (VAT) regime

Three options:

  • Isento (Article 53) - VAT-exempt because you’re below €15,000 expected gross. Simplest. Default choice for most starting freelancers.
  • Sujeito a IVA com possibilidade de renúncia à isenção - register for VAT voluntarily even if below threshold. Useful if your clients are businesses who can deduct the VAT.
  • Sujeito a IVA - required if expected income exceeds €15,000.

If you’re uncertain, start with Isento (Article 53). You can re-register for VAT later if your income grows.

Select 'Regime Simplificado' (simplified regime)

Two regime choices:

  • Regime simplificado - what 95% of freelancers under €200k use. Presumed 25% expenses by formula; minimal bookkeeping.
  • Contabilidade organizada - full accounting with a contabilista. Required above €200k gross or by election.

Pick Regime simplificado unless you specifically need contabilidade organizada (very high earners with documented expenses

25% of gross).

Provide your IBAN for refunds

Enter the IBAN of your Portuguese bank account. AT uses this for:

  • IRS refunds at year-end settlement
  • IVA refunds (if VAT-registered)
  • Any other AT-side overpayment returns

Foreign IBANs technically work for SEPA but cause delays - use a Portuguese account if you can.

Review and submit

AT shows a summary of all your selections. Verify:

  • The activity code (art. 151 or CAE) matches what you actually do
  • Expected income is realistic
  • VAT regime is what you want
  • IBAN is correct

Click “Submeter”. You’ll get a comprovativo (receipt) PDF immediately - save it. Activity is now live as of the date you submit.

portaldasfinancas.gov.pt
Portal das Finanças NIF · 123 456 789

Cidadãos › Atividade › Início de atividade

Atividade aberta com sucesso ✓

Data de início

01-01-2026

Atividade

1332 - Programadores informáticos (art. 151.º CIRS)

Regime

Simplificado

Regime IVA

Isento (Art. 53 CIVA)

Comprovativo

Disponível para descarga

Descarregar comprovativo Voltar à área pessoal

Schematic - actual UI may differ. Illustrates layout, not exact pixels.

Confirmation screen. The 12-month SS exemption clock starts on the date shown - note it for the calendar.

What happens next (automatically)

In the days following submission:

DayWhat happens
Same dayActivity is open at AT. You can issue recibos verdes immediately.
1-5 daysAT communicates to Segurança Social. You’re enrolled in the self-employed regime.
2-7 daysSS sends a confirmation letter to your registered address with your inscription number.
Month 1First Quarterly Income Declaration form appears in SS Direta - but contributions are zero (12-month exemption).
Month 13First non-exempt SS contribution due.

You don’t need to do anything during this window besides start invoicing clients.

Coming up for recibos verdes

Get a reminder a week before each one.

One short email a week before each deadline on this calendar (Segurança Social quarterly, IVA, IRS, IMI), with the walkthrough for that step, plus a note when the rules change. Usually one to three emails a month; unsubscribe any time.

Common mistakes

Wrong activity code. Picking a “close enough” code that doesn’t match your activity can cost you IFICI eligibility or trigger AT inquiries, and it changes the coefficient. Registering a profession that’s on the art. 151 table under a CAE code taxes 35% of your income instead of 75% - an under-declaration AT can correct later, with interest. Going the other way overpays IRS for years. And 1519 is only for work no specific code describes.

Forgetting to opt for IVA exemption. Default behavior for incomes above €15k is to register for VAT. If you’re unsure of your first-year income but expect to stay below €15k, explicitly select Article 53 isenção.

Opening activity before getting paid. You can only legally invoice after the activity is open. If a client wants to pay you for work done before registration, you can’t issue a fatura with their NIF - costs you the deduction on their side and looks unprofessional.

Re-opening within 5 years of a previous closure. Re-opens reset many benefits. The year-1 IRS reduction has a 5-year prior-activity exclusion; the SS first-year exemption has a 3-year exclusion. If you closed activity in 2023 and re-open in 2026, you don’t get year-1 benefits.

Closing activity (cessação)

If you stop freelancing, close the activity at Portal das Finanças within 30 days. Failing to close means SS keeps assessing contributions based on your last declared income, even when you’re not earning.

Process is the inverse: same menu, “Cessação de Atividade”, same form flow. Closure is also free. Full walkthrough in the close activity (cessação) guide, including the 5-year reset clock for re-opening later.

What to do same-day after opening

Once the activity is live:

  1. Update your invoicing workflow - start issuing recibos verdes via the AT portal (see Issuing a Recibo Verde guide)
  2. Confirm SS Direta access - register at seg-social.pt if you don’t have an account; you’ll need it for quarterly declarations
  3. Check Portal e-Fatura settings - make sure your NIF is set up to capture business expenses for the 15% justification rule

Then run your first-year tax estimate in the calculator - toggle Year 1 + the 12-month SS exemption checkbox to see what you’ll keep.

Sources

Try the numbers for your situation

See your freelancer net - IRS, IVA and Segurança Social.

Same engine that powers the examples in this article.

Open calculator →

Stay ahead of the quarterly SS + IRS deadlines.

Once you're issuing recibos verdes, quarterly Segurança Social declarations and the annual IRS filing kick in. Get a plain-English email before each deadline. No drip campaign.

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