Social Security for TVDE drivers: quarterlies without surprises

Published 17 August 2026 · Ler em português

Social Security is the part of the system that works for you: pension, sickness benefit, parental support. In exchange it asks the self-employed worker for two things: a declaration every three months and the corresponding contribution. This guide explains the rhythm, the amounts and the first-year exemption.

Registration is automatic

When you open activity at the tax office, the information flows automatically to Social Security (Segurança Social). You don't need to register separately. Your framing as a self-employed worker happens on its own; the obligations are what stay with you.

The first year: as a rule, exempt

For anyone becoming a self-employed worker for the first time there is, as a rule, a contribution exemption for the first 12 months of activity. It's real relief at the start, but the exact conditions depend on your situation (for example, whether you also hold salaried employment), so confirm your specific case before counting on it.

The quarterly rhythm

Once the exemption period is over, Social Security life takes on a fixed rhythm: in January, April, July and October you file the quarterly declaration with what you received in the previous three months. The contribution of the following months is calculated from there, and each month's payment is made, as a rule, between the 10th and the 20th.

How much you pay, roughly

The calculation has two pieces: the base and the rate. The base corresponds, as a rule, to 70% of the services income declared; on it applies the general rate for self-employed workers, currently in the order of 21.4%.

An example with round numbers, purely illustrative: declaring €3,000 in a quarter (€1,000/month) gives a monthly base of around €700 and a contribution in the order of €150 per month in the following quarter. The exact amount depends on your case. The idea to keep is that the contribution follows what you declared: better quarters, bigger contributions, and vice versa.

What happens if you miss it

Missing declarations and late payments generate fines and interest, and they are among the most avoidable failures of the tax calendar, because the dates are known months in advance. The trick is not memory, it's a system: having someone (or something) that warns you first.

Quick questions

Keep reading

• How to open activity (abrir atividade) as a TVDE driver, step by step
• Green receipts in TVDE: how to invoice the fleet without errors
• The TVDE driver's VAT: article 53 explained

This guide is informational and does not replace personalised advice. Amounts and examples are illustrative and can change with the law; when in doubt, talk to a certified accountant.