Do Prosperity Marks expire?

Prosperity Marks do not expire.

Your Prosperity Marks will not expire. However, your rank in our Reward Tiers will reset every year, and Prosperity Marks may only be exchanged for ships while supplies last.
Please note that since we are launching the StarPath Referral Program in the middle of the year, your balance from 2022 will be carried over through 2023.
 You can find out more about the tiered reward structure by visiting What rewards can I earn for referring someone?