The 20 millionth Bitcoin is projected to be mined around mid-March 2026, leaving fewer than 1 million BTC to be released over the next 114 years.
Bitcoin is days away from a historic supply milestone: the 20 millionth BTC is expected to be mined in mid-March 2026, meaning 95% of all Bitcoin that will ever exist is now in circulation.
Based on current block production rates, the Bitcoin network will mine its 20 millionth coin around March 11-15, 2026. It took approximately 17 years since the genesis block in January 2009 to reach this point. The remaining supply of roughly 1 million BTC will take over 114 years to mine, with the final fraction not expected until approximately 2140.
Due to rounding in Bitcoin's code, the actual maximum supply will be 20,999,999.9769 BTC, just under the commonly cited 21 million cap. With post-halving block rewards currently at 3.125 BTC every ten minutes, new supply is entering the market at historically low rates.
The milestone reinforces Bitcoin's core scarcity narrative at a time when the asset trades around $70,000, well below its October 2025 highs. Research from Chainalysis and River Financial estimates that between 2.3 and 3.7 million BTC are permanently lost due to forgotten passwords, deceased holders, and coins sent to unspendable addresses. This means the effective circulating supply is significantly lower than 20 million.
The approaching milestone also coincides with growing institutional interest. Spot Bitcoin ETFs recorded $458 million in net inflows on March 2, the largest single-day figure of Q1 2026. JPMorgan recently noted that Bitcoin's lower volatility relative to gold could make it 'more attractive' as a long-term allocation for institutional portfolios.
The exact date of the 20 millionth coin depends on block timing variance, but current estimates point to the second week of March. Miners face increasing pressure as halvings continue to cut rewards, pushing the industry toward transaction fee revenue. The next halving is expected in 2028, which will reduce block rewards to 1.5625 BTC.
Bitcoin reaching 95% of its total supply is a reminder of the protocol's built-in scarcity. With millions of coins permanently lost and new issuance slowing, the supply squeeze will only intensify in the years ahead. This is a developing milestone, and the exact timing may shift with block production speeds.
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Disclaimer: News content is for informational purposes only and should not be considered financial advice. Market conditions can change rapidly. Always conduct your own research.
