Bitcoin’s Final 929,465 BTC Will Take More Than a Century to Mine

Bitcoin has already produced about 20.07 million BTC since it launched in January 2009. At block height 962570, roughly 929,465 bitcoin remain under the 21 million cap, but they will not hit the market anytime soon. The easy years of new bitcoin issuance are long over. What remains is an extended, slow wind-down that will test the mining industry every four years.

That is the part often lost in the “BTC is almost fully mined” headline. Yes, 95.57% of the nominal supply is already out there circulating. But the Bitcoin network was built to push most of its issuance into its early years, then make the remaining coins harder and slower to earn. The last few percentage points are not a short countdown. They are most definitely a generational process.

At the time of writing, at 8 a.m. EDT on Aug. 15, 2026, bitcoin miners currently receive 3.125 BTC for each block added to the blockchain. A block is simply a batch of transactions that has been verified and permanently recorded. Bitcoin targets one block about every ten minutes, putting current issuance near 450 BTC a day, or about 164,250 BTC a year if the network stays close to schedule.

When Satoshi first launched Bitcoin, the reward initially began at 50 BTC per block, then dropped to 25, 12.5, 6.25, and today’s 3.125 BTC. The next halving is expected around 2028. At that point, the reward falls to 1.5625 BTC per block, cutting expected daily issuance from about 450 BTC to around 225 BTC. The 2028 halving will be the last time miners get a full coin in the subsidy, as it will shrink to 0.78125 BTC by 2032.

That is why the remaining 4.43% matters more than it first appears. Bitcoin moved from 25% issued to 50% issued in less than two years. Reaching 75% took less than four more. The pace then slowed sharply. Bitcoin passed the 95% threshold around Dec. 3, 2025, and is projected to reach 99% around February 2035. What’s amazing is the fact that the final 1% would then take roughly another century.

There will not be a dramatic final block in 2140 that spits out one last whole BTC. By then, mining rewards will be super tiny. One bitcoin (BTC) is divisible into 100 million satoshis, and the block subsidy gets smaller until miners are paid in a handful of satoshis instead of whole coins.

There is also a small catch behind the 21 million figure. Bitcoin cannot create fractions of a satoshi. Eventually, halvings produce rewards too small to pay, leaving the theoretical maximum at about 20,999,999.9769 BTC. The gap is minuscule, but it is a useful reminder that the famous 21 million cap is a clean shorthand, not the exact mathematical and final payout.

Right now, the newly created coins still do most of the work. During the 24-hour period reflected in the network figures, mining revenue totaled about $28.7 million. Transaction fees made up a mere 0.69% of that amount. Fees can spike during periods of heavy activity, but low fees have been the norm lately, and it shows how heavily miners still depend on the subsidy.

Mining is a business with thin margins and brutal swings. When revenue drops, less efficient machines go dark. Bitcoin’s difficulty adjustment then reduces the amount of work needed to mine blocks, helping block production return toward its target pace. The system keeps moving, but the economics behind it constantly change.

That is why the real question is not whether Bitcoin can survive until 2140. It is whether transaction fees will become a durable source of miner income as the subsidy shrinks. The network does not need to wait for the last satoshi to confront that problem. It is already working through it every four years.

For investors, the supply schedule remains one of Bitcoin’s strongest selling points. At the current rate, roughly 164,250 BTC are issued each year. After the next halving, that annual flow falls to about 82,125 BTC. Four years later, it drops again. New supply becomes increasingly difficult to ignore when demand rises.

The next real test comes in 2028, when the subsidy is expected to fall again. Bitcoin’s price will grab the headlines, but miner revenue, fees, and hashrate will tell the deeper story. Those numbers will show whether the network can keep paying for security as the new supply dries up.