The schedule most foreign buyers fall in is Table III, the investment table taxed from the first euro; a primary-residence buyer uses a gentler table exempt to €106,346 in 2026, and first-home buyers under 35 are exempt to €330,539. Above roughly €634k a 6% flat rate replaces the slices.
You need a NIF before the deed and a fiscal representative if you are non-EU. Charges travel with the property, so the land-registry certificate (certidão) comes before the deposit — the Portuguese cousin of the Spanish nota simple.
Alojamento Local is commune politics: Lisbon and Porto froze new licences in containment zones, and the freeze is the model for any short-let arithmetic. sivrce.com/pt is the canonical Portugal URL.