Do you use public transport for your business ?
Train, streetcar, metro, bus 🚅 : 100% deductible as long as it's for a business trip. For VAT, you'll rarely get a proper invoice. However, for Belgian public transport, a tolerance exists: the 6% VAT is recoverable, even on the basis of a simple ticket !
💡 If you have a train pass for business travel, it remains 100% deductible even if you also use it for private journeys.