The system calculates total volume daily at 00:00 (UTC+8) and updates the latest fee tiers between 04:00 and 06:00 (UTC+8).Become an affiliate and earn fee rebates You can apply to become an OKX affiliate and earn fee rebates by successfully inviting 10 valid new users. Invited users who are flagged by risk controls don’t count as valid. To qualify, the invited users must meet the following requirement: The trading volume of any single order must be at least 50 USDT.