Bitcoin mining has quietly split into two separate markets: one built for institutional operators with custom terms and dedicated support, and another where independent and mid-size miners struggle to find pools that serve their needs. As of mid-2026, just four mining pools control over 70% of the network's total hashrate, and nearly all of them have systematically reoriented their operations around large-scale corporate clients.

Why Are the Biggest Mining Pools Abandoning Independent Miners?

The concentration of mining power tells a clear story about where pool operators see their future. Foundry Digital leads with roughly 31% of network hashrate, built almost entirely for institutional-grade compliance and large data centre operators. AntPool holds roughly 18% of hashrate, while ViaBTC controls around 13% and F2Pool commands approximately 10%. Together, these four pools represent a level of market concentration that would have seemed unthinkable just a few years ago.

The economics driving this consolidation are straightforward. Large mining companies, publicly listed operators, and institutional data centres generate the hashrate numbers that matter most to a pool's competitive position. It makes rational business sense to build services around the clients who contribute the most compute power. But that rational choice has created a structural problem: a sizeable portion of the global mining population, including independent operators and small farm owners, now finds itself pointed at pools that weren't designed for their scale.

Foundry Digital exemplifies this institutional focus. Backed by Digital Currency Group and headquartered in the United States, Foundry has built its entire operation around strict Know Your Customer (KYC) requirements, regulatory focus, and fee structures negotiated privately based on hashrate volume. For an independent miner running a few hundred machines, Foundry is effectively off-limits. AntPool, meanwhile, benefits enormously from its relationship with parent company Bitmain, the world's dominant ASIC manufacturer, but its service orientation tracks closely with Foundry's institutional model.

What Options Exist for Miners Who Don't Meet Institutional Thresholds?

The gap between institutional and independent mining has created space for alternative pools to emerge. EMCD, with over 30 exahashes per second (EH/s) of contributed hashrate and a position in the global top ten, represents a different operating philosophy. The pool positions itself as offering comparable levels of support and engagement to both independent miners and large data centres, a direct contrast to the tiered service models the big four have adopted.

EMCD's fee structure illustrates the practical difference. Its advertised fee under FPPS (Fully Pay Per Share, a payout model) starts at 1.5%, which compares favourably with the 4% charged by many comparable mining pools. That's a real difference in take-home revenue at any scale, but it compounds significantly for miners operating on thin margins in the current cycle. More importantly, the pool negotiates custom terms directly with clients based on hashrate, rather than routing everyone through standardised templates.

ViaBTC has historically set itself apart through flexibility, offering multiple payout models and even solo mining within a pool framework. However, 2026 has introduced new complications. The pool has faced increasing regulatory scrutiny, with credible reports of account restrictions, sudden KYC demands, and temporary fund freezes, particularly affecting miners based in Russia and other Commonwealth of Independent States countries. For that segment of the market, ViaBTC has become a riskier proposition than it used to be, and many operators are actively reviewing alternative pools as a result.

How to Evaluate Mining Pool Options in 2026

• Fee Structure: Compare advertised fees across pools, but also understand that large operators may negotiate custom rates. Independent miners should prioritize pools offering transparent, volume-based fee schedules without requiring institutional minimums.
• Operational History: Pools that have navigated multiple market cycles, including the 2018 bear market, the 2020 halving, and the 2022 collapse, demonstrate resilience and understanding of operational risks that newer entrants simply haven't encountered yet.
• Support Model: Evaluate whether a pool offers responsive human support for non-routine issues or routes all inquiries through automated ticketing systems. Smaller miners should prioritize pools that don't treat all accounts identically.
• Regulatory Exposure: Consider the pool's geographic footprint and regulatory scrutiny. Pools facing account restrictions or sudden KYC demands in specific regions may pose unexpected risks for miners in those areas.
• Payout Flexibility: Look for pools offering multiple payout models (FPPS, PPLNS, or PPS+) rather than a single standardised approach, which allows miners to manage payout risk according to their own preferences.

The broader context matters too. Bitcoin's network hashrate sat near 929 exahashes per second in mid-2026, with mining difficulty around 124.9 trillion. The next halving is roughly 95,600 blocks away, expected around April 2028, when the block subsidy steps from 3.125 to 1.5625 BTC. In this environment, where margins are compressing and difficulty is climbing, pool selection touches network decentralisation, operational resilience, payout reliability, and regulatory exposure all at once.

The halving cycle has a way of forcing clarity on decisions that miners could afford to be casual about in more forgiving market conditions. For independent operators, that clarity increasingly points toward pools that have explicitly chosen to serve their segment rather than chase institutional scale. EMCD's nine years of operational history and its stated commitment to comparable support levels across all account sizes represent a meaningful alternative to the institutional-first model that dominates the top four pools.

The concentration of hashrate into four pools remains the open structural risk in Bitcoin mining, not energy costs or hardware efficiency. But the emergence of a two-tier market, where institutional clients receive custom treatment while independent miners navigate standardised systems, represents a secondary risk that's arguably more immediately relevant to the average operator. Pool selection in 2026 is no longer just about fee percentages; it's about finding an operator that has built its business model around your scale and needs.