Bitcoin's supply is nearly exhausted, but the last stretch will be painfully slow. At block height 962570, roughly 929,465 bitcoin remain under the 21 million cap, and the final tranche will take more than a century to mine. That's not a typo. The era of easy bitcoin issuance is over, and the remaining supply will be distributed over an extended period that outlasts most careers.
The numbers behind the cap
Since January 2009, the network has produced about 20.07 million BTC. That leaves less than 5% of the total supply still to be mined. The halving schedule does the heavy lifting here. Every four years, the block subsidy gets cut in half, and as the subsidy shrinks, the time it takes to unlock the remaining coins stretches dramatically.
At current issuance rates, the final bitcoin won't be mined until roughly the year 2140. For context, that's about 114 years from now. The next few halvings will drop the subsidy from the current 3.125 BTC per block to fractions of a coin, and eventually, miners will be working for fees alone.
What this means for miners
Miners are already feeling the squeeze. With the subsidy shrinking, their revenue increasingly depends on transaction fees, not block rewards. The slow trickle of remaining supply means that dynamic only gets more pronounced. The network isn't running out of bitcoin in a dramatic sense, but the easy money — literally — is gone.
The timeline also changes how miners think about hardware and electricity costs. If the last coins are more than a century away, the economics of mining today are really about earning fees and holding inventory, not about grabbing a share of the final supply.
Scarcity as a feature
For holders, the slow issuance is the point. The 21 million cap is baked into the protocol, and the long tail of supply is what makes bitcoin scarce. Unlike fiat, which can be printed in unlimited quantities, the supply curve here is fixed and predictable. That predictability is part of the reason the asset has attracted a long-term following.
The remaining 929,465 BTC won't flood the market, and that's by design. The extended timeline means the final supply is effectively locked in, with only a tiny amount released each year. That scarcity dynamic isn't going to change, regardless of price swings or market sentiment.
The next milestone to watch is the next halving, which will cut the block subsidy again. After that, the math just keeps pushing the last coins further into the future.
