Bitcoin Miners Face Record-Low Fees Amid Network Hashrate Surge

Bitcoin mining economics have reached a critical point. Transaction fees in December 2025 accounted for just 0.52% of total block rewards, translating to approximately 16 BTC (about $1.4 million) out of 3,166 BTC in miner revenue.

This is the lowest level of fee revenue on record, even considering bull market periods with high network congestion. Historically, fees have averaged around 1% of miners' total take.

The halved subsidy after the April 2024 block reward reduction has further squeezed miner revenue, which is now largely dependent on the subsidy. The network hashrate reached an all-time high by late December 2025, but revenue per unit of hash power continues to shrink.

As a result, some mining operators are turning to AI and HPC revenue as an alternative source of income, with CoinShares reporting that this sector could account for up to 70% or more of total revenues by the end of 2026. Publicly listed miners saw stock price declines in response to these low fee metrics.