Declaração Trimestral
Quarterly Declaration
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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.
The declaração trimestral is a quarterly income report you file with Segurança Social (Portuguese Social Security). It's how the system knows what to charge you.
How it works
Every quarter, you tell Social Security how much you earned in the previous three months. Social Security takes that number, applies a formula, and sets your monthly contribution amount for the next quarter.
The cycle runs like this:
| Filing month | You report income from | Contributions paid |
|---|---|---|
| January | October to December | February to April |
| April | January to March | May to July |
| July | April to June | August to October |
| October | July to September | November to January |
You report what already happened. Social Security then looks ahead and adjusts your contributions accordingly. If you earned more, you pay more. If you earned less, you pay less, with a minimum floor.
Where to file
The declaração trimestral is filed through Segurança Social Direta: the Social Security online portal. This is a completely separate system from the Portal das Finanças.
You declare your income for the previous quarter there. Once Social Security has worked out your contributions, you can see them in Segurança Social Direta under Emprego » Consultar Contribuições.
If you missed the deadline, the same portal takes a late declaration (fora de prazo) until the last day of the month before the next declarative month, under Emprego > Trabalhadores independentes > Regime Declaração Trimestral > Consultar Declaração Trimestral. A late declaration cannot be used to opt in early (enquadramento antecipado).
Before your contributions start
New freelancers don't file immediately. If your abertura de atividade is your first ever, you are in the Social Security regime from the day you open activity, but your contributions only start on the first day of the 12th month after your start date. Until then there is nothing to pay and nothing to declare.
That is a deferred start rather than an exemption, and it happens once. Reopening activity after a previous registration means contributing from the first day of the month you reopen. The one exception: if you closed inside your original 12 months and reopen within the 12 months after closing, the count resumes for whatever was left.
Once your contributions have started, you file in the declarative months: January, April, July and October.
What happens if you miss it
Not filing the declaration is a minor offence (contraordenação leve) with a fine of €50 to €250 (Art. 233.º n.º 1 of the Código dos Regimes Contributivos), and contributions paid late carry late-payment interest (juros de mora). File as soon as you can.
Perguntas frequentes
What is the declaração trimestral?
It's a quarterly income report you file with Segurança Social (Portuguese Social Security). You declare how much you earned in the previous quarter, and Social Security uses that to calculate your monthly contributions for the next three months.
When are the quarterly declaration deadlines?
January (reporting October-December income), April (reporting January-March), July (reporting April-June), and October (reporting July-September). Each declaration is due by the last day of that month.
What happens if I miss the deadline?
Not filing is a minor offence (contraordenação leve) with a fine of €50 to €250, and contributions paid late carry late-payment interest (juros de mora). You can still file late on Segurança Social Direta until the last day of the month before the next declarative month.
When do I file my first declaração trimestral?
Once your contributions have started. For a first-ever registration they start on the first day of the 12th month after your abertura de atividade, and from then on you file in the declarative months (January, April, July and October). Reopening activity after a previous registration starts them from the first day of the month you reopen, unless you closed inside your original 12 months and reopen within 12 months of closing, in which case the remaining months of the deferral resume.
Where do I file the declaração trimestral?
Through Segurança Social Direta, the Social Security online portal (not the Portal das Finanças). You declare your income for the previous quarter there, and you can then see the contributions worked out from it under Emprego » Consultar Contribuições.
Termos relacionados
The English term for the quarterly income report filed with Portuguese Social Security, used to calculate freelancer contributions for the following quarter.
Segurança SocialSocial SecurityPortugal's social security system. Solo entrepreneurs contribute a percentage of declared income to fund healthcare, sick leave, parental leave, and retirement pension.
Trabalhador IndependenteSelf-Employed WorkerThe Portuguese term for an independent worker or sole entrepreneur, the equivalent of a freelancer or sole trader in other countries.
Abertura de AtividadeOpening ActivityThe process of registering as a self-employed worker (trabalhador independente) with the Portuguese tax authority, officially starting your freelance activity.