UFC fighters make money primarily through fights and the paychecks they receive from each. The fighters usually sign a contract for a certain amount of fights for a fixed amount of money each time they step inside the Octagon.
The three tiers are low, medium, and high, with the lowest earning between $10,000 and $30,000 and the highest Tier for champions and superstars ranking between $500,000 and $3,000,000 per fight.