NS group rate is subject to the following conditions:
- A group leader oversees the trip.
- Everyone pays the same rate.
- The minimum group size per departure is 10 adults.
- The group all departs from the same station.
- Group tickets consist of one main ticket with a barcode that can be used to open gates at stations throughout the Netherlands.
- Group rates are not always less expensive than individual rates.
- The availability of a train connection (read: number of seats taken, popularity of route, and travel time) determines group rates, which ultimately differ.