The topic of last Bitcoin mining has become a frequently discussed issue in the crypto world. Looking at the current amount of BTC in circulation, about 95.33% of the 21 million limit—namely, more than 20 million Bitcoin—has already been in the market. In other words, the answer to when the last Bitcoin will be mined calls for a little more waiting.

Under the existing halving mechanism, the last Bitcoin is expected to be mined around 2140. The block reward, which started at 50 BTC, has fallen to 3.125 BTC over time through multiple halvings. Thanks to these halvings that occur every four years, the rate of new Bitcoin issuance continues to slow down.

Mining the remaining 1.8 million Bitcoins will take a very long time. This is because, as we get closer to the last Bitcoin, block rewards shrink so much that miners’ revenue becomes almost entirely dependent on transaction fees. This creates an interesting dynamic: the question of when the last Bitcoin will be mined actually depends on how the network’s economic equilibrium will evolve.

From the perspective of miners, once the last Bitcoin has been mined, the block reward will disappear completely. At that point, it remains to be seen whether transaction fees alone will be enough to keep the network secure. But for now, due to the system’s design, it is almost certain that the last Bitcoin will continue to be mined until 2140. So there is still a very long way to go before the final Bitcoin mining is completed.