Yes, you must tap off on every Sydney bus in 2026 to ensure you are charged the correct fare. Sydney’s transport system uses a distance-based pricing model; by tapping on when you board and tapping off when you exit, the Opal reader calculates the exact distance traveled. If you forget to tap off, the system defaults to charging you the maximum possible fare for that specific bus route, which can be significantly higher than your actual trip cost. This rule applies whether you are using a physical Opal card, a contactless credit/debit card, or a digital wallet on your phone. Tapping off also ensures your trip counts toward your daily and weekly travel caps and "transfer" discounts (such as when switching from a bus to a train). In 2026, transport officers frequently conduct checks, and having an "open" trip because you failed to tap off can occasionally result in a warning or fine for not having a valid "end-to-end" ticket.