Marathon Digital Holdings and Riot Platforms are adjusting strategies as crypto mining profit margins tighten. Marathon plans to sell part of its newly mined Bitcoin to bolster cash flow, as revealed in its Q3 2025 earnings. Riot reported a 2% quarterly and 14% annual decline in Bitcoin production, selling 400 BTC in October, a shift from its previous HODL approach. With Bitcoin prices near $81,000 and rising hash rate costs, miners face break-even challenges. Tax planning has become crucial for sustaining operations. U.S. miners are exploring tax optimization strategies, including accelerated depreciation and cross-border structuring, to mitigate tax burdens and enhance cash flow. These measures are vital as the industry grapples with increased competition and financial pressures.