Bitcoin hit 20 million coins mined around March 15, 2026, at block height 940,217. Over 95% of the total 21 million supply is now in circulation, leaving just 1 million BTC to be mined over 114 years.
Bitcoin is on track to hit the 20 million coins mined mark around March 15, 2026, at approximately block height 940,217, a milestone that cements what experts call "provable scarcity" as over 95% of the total supply enters circulation.
With roughly 450 BTC mined per day following the April 2024 halving, Bitcoin's circulating supply is approaching the 20 million coin threshold. The milestone, expected around mid-March 2026, means that only 1 million BTC remain to be created over the next 114 years, with block rewards continuing to halve roughly every four years until the final satoshi is mined around 2140.
It took 17 years to mine the first 19.9 million coins. The remaining million will trickle out across more than a century, with each halving cycle slowing issuance further. Public companies now collectively hold over 1.7 million BTC, representing approximately 8% of total supply, while institutional investors account for roughly 65% of large Bitcoin transactions.
The 20 million mark is both a psychological and structural turning point. It signals Bitcoin's transition from an era of significant block subsidies toward a fee-dependent security model. Miners increasingly rely on transaction fees rather than new coin issuance to sustain operations, a shift that will accelerate after the next halving in 2028.
For institutional allocators, the milestone reinforces Bitcoin's scarcity narrative at a time when fiat currency risks are rising. Grayscale estimates that less than 0.5% of US advised wealth is allocated to crypto, though early movers like Harvard Management Company and Mubadala have already adopted crypto ETPs. Assets under management across all crypto ETPs are expected to surpass $400 billion by year-end 2026.
The exact block that crosses 20 million coins will likely attract attention from the mining community and media. Beyond the milestone itself, the focus shifts to Bitcoin's fee market development and whether transaction revenue can offset declining block rewards. The next halving in 2028 will cut the block reward to 1.5625 BTC, making the economics of mining increasingly dependent on network activity and fee levels.
How many Bitcoin are left to mine? As of March 2026, only about 1 million BTC remain to be mined out of the total 21 million supply cap. The remaining coins will be created gradually through block rewards over the next 114 years, with the final satoshi expected around 2140.
Why does Bitcoin have a 21 million supply limit? Bitcoin's creator, Satoshi Nakamoto, hard-coded a 21 million coin cap into the protocol. This fixed supply, combined with the halving mechanism that cuts block rewards every four years, creates provable scarcity that cannot be altered without consensus from the entire network.
What happens when all 21 million Bitcoin are mined? When all Bitcoin are mined around 2140, miners will rely entirely on transaction fees to sustain the network instead of block rewards. This transition is already underway, as each halving reduces block subsidies and increases the importance of fee revenue.
Bitcoin's 20 millionth coin marks the beginning of what may be its most important chapter: proving that a decentralized network can sustain itself on transaction fees alone as new supply dwindles to near zero.
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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.
