Circle Internet Financial is set to implement a new trading fee structure on May 15, 2018, aimed at providing more consistency and competitiveness for users of its Poloniex exchange. The revised fees will be based on 30-day trading volumes measured in US Dollars, rather than Bitcoin, to avoid confusion caused by Bitcoin's volatility. The changes include reduced starting fees for both makers and takers and lowered volume thresholds for fee discounts, rewarding more active traders. The adjustments are part of Circle's broader effort to refine the user experience and align its pricing with market standards, reflecting the dynamic nature of cryptocurrency markets.