What Happens When All Bitcoins Have Been Mined? A Major Change Awaits Miners

The Last Bitcoin Is Expected Around the Year 2140

Mining all bitcoins is not an event expected to happen within the next few years. Under the current Bitcoin protocol, the final BTC are expected to enter circulation around the year 2140. Technically, the final supply is often said to be slightly below 21 million - approximately 20,999,999.9769 BTC. This is due to the way block rewards are repeatedly halved and the smallest units, known as satoshis, are rounded within the protocol.

In practice, however, the vast majority of bitcoins have already been mined. As of June 2026, the Bitcoin network has reached approximately block 954,000, with the current block reward set at 3.125 BTC plus transaction fees. The next halving is scheduled for block 1,050,000, when the reward will decrease to 1.5625 BTC per block.

Bitcoin is therefore not mined all at once. New coins enter circulation at an increasingly slower pace. After each halving, which occurs approximately every four years, the number of newly created bitcoins is cut in half. This mechanism is one of the main reasons why Bitcoin is often regarded as an asset with fixed scarcity.

What Will Change for Miners?

Today, miners receive two sources of income. The first is newly created bitcoins, known as the block subsidy. The second consists of transaction fees paid by users to have their transactions included in a block.

Once all bitcoins have been mined, the first source of income will disappear. Miners will no longer receive newly issued BTC. They will instead be rewarded solely through transaction fees. Satoshi Nakamoto anticipated this possibility in the original Bitcoin whitepaper, explaining that once the predetermined supply of coins had entered circulation, miners' incentives could gradually shift from newly issued coins to transaction fees alone.

This does not mean mining will come to an end. Miners will continue validating transactions, assembling blocks, and securing the network. What will change is the source of their revenue. The future of mining will therefore depend on whether transaction fees remain high enough to justify operating powerful mining hardware and covering electricity costs.

Will the Bitcoin Network Continue to Operate?

Yes. Mining all bitcoins does not mean the end of the blockchain. The Bitcoin network can continue producing new blocks even after no new coins are created. Once issuance ends, new blocks will continue to be produced, with transaction fees expected to provide the economic incentive needed to keep the network running.

This is an important distinction. Bitcoin mining is not simply about creating new coins. It also serves to secure the entire network. Miners compete to discover new blocks, validate transactions, and protect the blockchain's history from tampering. While newly issued bitcoins are currently the primary economic incentive, the technical function of mining can continue even without them.

The real question is therefore not whether Bitcoin will continue operating after 2140. The question is how strong and economically sustainable the mining infrastructure will be once the block subsidy no longer exists.

Transaction Fees Will Play a Much Larger Role

Today, transaction fees represent only a variable portion of miners' income. During periods of heavy network congestion, they can increase significantly, while at other times they remain relatively low. Over the long term, however, they will become increasingly important because the block reward will continue to decline after every halving.

This leads to one of the biggest questions surrounding Bitcoin's future: the security budget. This refers to the total value the network pays miners in exchange for securing the blockchain. If miners' revenues were to decline substantially in the future, some could leave the network. This would reduce the hashrate and, at least theoretically, lower the economic cost of attacking the network.

That does not mean Bitcoin is destined to face problems. More than a century remains until 2140. By then, Bitcoin's price, network usage, mining technology, the energy sector, and the role of second-layer solutions such as the Lightning Network may all change significantly. Moreover, the Bitcoin economy adapts to lower block rewards gradually rather than all at once.

Will Bitcoin Transactions Become More Expensive?

It is possible that transaction fees on Bitcoin's main layer will become increasingly important in the future and, during periods of high demand, significantly higher. This would align with the idea that Bitcoin's base layer will primarily function as a global settlement network for large-value transfers, long-term value storage, and transactions between institutions rather than for everyday small payments.

Smaller payments could instead move to layer-two solutions. This is already the direction of the debate surrounding Bitcoin scaling. The main blockchain has limited capacity, and when more users compete for block space, transaction fees naturally increase. In such a system, fees are not a flaw but rather the market price for scarce space within a Bitcoin block.

What Will Happen to Bitcoin's Price?

Mining all bitcoins does not automatically mean Bitcoin's price will rise. It is often argued that a strictly limited supply must push prices higher over the long term. However, this is only true if demand for Bitcoin continues to exist.

Scarcity is only one side of the equation. The other is whether investors, companies, governments, and ordinary users continue to hold and use Bitcoin. The impact of the limited supply cannot be viewed in isolation. Bitcoin remains highly volatile and its price can experience significant movements in both directions. If demand were to decline, the 21 million supply limit alone would not support its price.

It is also important to remember that some bitcoins are already considered lost or permanently inaccessible, for example because their private keys have been lost.

Can the 21 Million Limit Ever Change?

In theory, almost anything can be modified in open-source software. In practice, however, changing Bitcoin's supply limit is extremely unlikely. Bitcoin is not controlled by a single company or central bank. Any such change would require acceptance from a substantial portion of users, developers, miners, exchanges, and node operators.

The fixed supply is one of the core reasons why Bitcoin was created and why many people continue to hold it. Increasing the supply limit would undermine Bitcoin's fundamental economic narrative. In practice, such a proposal would almost certainly face strong resistance from the community.