The annual tax filing campaign has begun and will run until June 30. Declarations must be submitted online via the Portal das Finanças, though the process can be challenging, particularly when verifying data. Experts advise carefully reviewing even pre-filled returns. Common mistakes include blindly confirming automatic declarations, failing to report income from property sales or self-employment, and providing incorrect bank details for refunds. Free assistance is available at Espaço Cidadão centres, tax offices, and local municipalities. Applicants need their tax number and login password, and for joint filings, credentials for all family members. Material taken from https://t.me/s/lepta