Click on the Daily Activity button in the main game screen, and you will see the maximum daily experience that your character can receive today, displayed in the upper right corner of the screen. The higher your character’s level, the more experience you can receive each day. On the screenshot below, the maximum daily experience for this character’s current level is 49000:
Experience points are granted for participating in available events, completing daily and reputation quests, as well as farming monsters. Experience gained from the main questline and side quests is not included here. If you don’t claim the experience earned over the course of 24 hours, it will roll over to the next day.
If you reach the daily experience limit, but continue to take part in daily activities, the experience you earn will be converted into points that can later be exchanged for items in the Trial Store. For example you can purchase a chest containing 10,000 silver.