Before the deadline: 7 checks
The quarterly declaration is filed at Segurança Social Direta by the last day of January, April, July and October. Before submitting, run through this list:
1. Total every receipt from the quarter
Include all recibos verdes issued in the 3 months — even small amounts. Mistake #1 is forgetting one receipt.
2. Confirm your relevant income
For services, that's 70% of gross. Have this number ready before opening the portal.
3. Check whether to adjust your bracket
If income rose or fell more than 25% vs. the previous quarter, consider requesting the adjustment.
4. Have your NISS ready
Your Social Security identification number is asked at the start of the process.
5. File at the right portal
Segurança Social Direta (app.seg-social.pt) — not the Finanças portal.
6. Save the receipt
After submitting, download the PDF confirmation. Keep it at least 5 years.
7. Schedule the payment
Filing is one thing, paying is another: contributions are paid between the 10th and 20th of the following month (August: until the 31st).
Fines for missing it
- Late declaration: €50 to €250
- Non-payment: interest + fine
Tip: FiscalPiloto alerts you at 14, 7, 2 and 0 days before every deadline and pre-fills the values to declare — just copy them into the portal.
Rules verified October 2026. Always confirm deadlines at Segurança Social Direta.