1) File early for a faster response
Those who file early are more likely to receive a response before the end of June. Late filings tend to face longer processing times.

2) Keep a full trade log outside Modelo 3
Modelo 3 captures minimal trade detail. Maintain your own detailed spreadsheet with dates, amounts, costs/fees, counterparties, and holding periods. We created a Crypto & Taxes IRS 2024 spreadsheet—message us and we’ll send it free.

3) Save supporting evidence
Retain screenshots/records from block explorers, tax software (e.g., Koinly), exchange reports, and any documents that prove holding periods and trades. These are essential if Finanças requests proof.

4) Evaluate joint vs. separate filing
Run both simulations—depending on your situation, filing separately can be more advantageous than filing as a family.

5) Donate 0.5% of your tax to a nonprofit
You may allocate 0.5% of your owed IRS to an eligible organization. See the official list on the Portal das Finanças:
https://info.portaldasfinancas.gov.pt/pt/apoio_contribuinte/IRS/Pages/IRS_entidades_beneficiarias_consignacao.aspx.

6) New for IRS 2024: report assets in tax havens (Annex G1)
This year you must report assets (including crypto) held in tax havens in Annex G1. Portugal’s list of recognized tax havens is here: https://diariodarepublica.pt/dr/legislacao-consolidada/portaria/2004-105808897. For context, see our note on X: https://x.com/cryptaxpt/status/1896266519161811189.

7) ESMA on USDT under MiCA
USDT is not banned in the EU, but services that facilitate purchasing it face restrictions. You can legally hold USDT; however, depositing to exchanges and finding trading pairs will become more challenging.

8) IRS filing invitations
We’ve already sent invitations for IRS filing. If you didn’t get one or want to join the list, reply and we’ll add you.