The Bitcoin halving is one of the most talked-about events in the crypto world. This built-in, predetermined mechanism is one of the most interesting parts of Bitcoin’s revolutionary design. To understand Bitcoin’s economics and its possible long-term path, as well as the effects it will have on the entire crypto industry, one needs to understand halving.
Bitcoin halving is a predetermined happening, coded into Bitcoin’s protocol, that happens almost after every four years (every 210,000 blocks). During a halving, the block subsidy — the amount of newly minted bitcoins given to miners for successfully adding a new block to the blockchain — is cut in half.
This reduces the rate at which new bitcoins enter into circulation, making Bitcoin’s supply less over time.
Without an agreement from the entire Bitcoin network, it is impossible to change the halving event.
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When Bitcoin first launched in 2009, miners got 50 bitcoins for every block they mined successfully. The halving process has slowly lowered this reward over time, which has made mining less profitable and limited the amount of Bitcoin that can be mined. Fewer rewards mean fewer Bitcoins are put into circulation. The last halving, which took place on April 19-20, 2024, cut the rewards per block from 6.25 to 3.125 Bitcoins.
The halving process makes it easy to see how many Bitcoins are available, which helps investors make the right trading decisions. Banks can change their minds based on political or economic factors, but Bitcoin’s halving is determined by maths and cannot be changed.
The Impact Of Halving
When a halving event occurs, the immediate effect is a 50% reduction in mining rewards, creating several cascading effects not only throughout the Bitcoin ecosystem but also on the entire crypto industry.
Miners can be affected by an immediate cut in rewards because it makes their operations less profitable, especially if they have higher operational costs or less efficient equipment. This makes the Bitcoin mining industry go through a process of selection, where the fittest survive. If the lower rewards do not cover the costs of electricity and maintenance for less efficient miners, they mostly stop mining.
The fact that Bitcoin’s prices are going up because of halving (leading to less supply) has a positive rippling effect on other cryptocurrencies. When Bitcoin investors earn profits, they often diversify by buying altcoins, either to get higher returns or to keep their portfolio balanced. This flow of money can cause alternative cryptocurrencies to grow.
Effect on the amount of Bitcoins available
- The halving has an effect on the “flow” of new bitcoins being added to the supply (but not on the “stock” of bitcoins that are already in circulation).
- After the halving, the number of new bitcoins that are generated every day drops by half. This causes a supply shock, which means that there are fewer new bitcoins competing for demand.
- If demand stays the same and new supply goes down, economic theory says that prices should go up. But since the cryptocurrency market is complicated, this may not always be true.
What happened in the past events?
There have been four halving events so far, and each had major effects on the cryptocurrency industry. On November 28, 2012, the first halving cut the rewards from 50 bitcoins per block to 25 bitcoins per block. At the time, Bitcoin was worth about $12. This event sparked a lot of interest in cryptocurrency among the general public, and the price of Bitcoin went up after that.
The second halving happened on July 9, 2016. It cut the rewards for each block from 25 to 12.5 bitcoins. This event came before more and more institutions were interested in Bitcoin.
During the COVID-19 pandemic, Bitcoin’s third block reward halving occurred on May 11, 2020, reducing the mining reward from 12.5 to 6.25 BTC per block when Bitcoin was trading at approximately $8,700. This event preceded one of the most significant bull markets in Bitcoin’s history, during which the price surged from under $10,000 to an all-time high of nearly $69,000 by November 2021.
The 2024 Bitcoin halving was very different from what had happened before. Halvings in 2012, 2016, and 2020 caused huge price increases, with gains of hundreds to thousands of per cent in the months and years that followed.
This cycle went differently. The big change happened long before the event, thanks to the launch of spot Bitcoin ETFs in the US in January 2024. By March, the price had risen to about $73,000 thanks to institutional inflows, which effectively front-ran the supply reduction. The market didn’t react much when the halving finally happened in April.
Over the summer, there was a moderate correction of about 25–30%, followed by a steady recovery with low volatility. A year after the halving, Bitcoin’s price was about 30–35% higher. This is a good return by traditional asset standards, but it was much lower than in previous cycles.
The main reason for this calmer behaviour is that institutional investors are becoming more powerful. A lot of trading and holding is now done by big investment firms, companies, and pension funds. Their disciplined, billion-dollar allocation strategies have made the market much less volatile and less extreme in the speculative extremes that used to be common after a halving.
In short, the 2024 halving showed that Bitcoin’s scarcity mechanism is still in place, even though the market has reached a more mature stage.
The next halving should happen in early 2028. The actual date may vary based on how hard it is to mine.
Around the year 2140, the last Bitcoin halving is expected to happen. By this time, almost all of the 21 million bitcoins will be mined. After this, miners will only make money from transaction fees.
Some perspectives compare this process to philosophical concepts, including Zeno’s dichotomy paradox, which examines infinity and continuity. Zeno’s paradox says that to get to a destination, you have to first cover half the distance, then half of what is left, and so on. As per the paradox, one is always getting closer to the end but never quite getting to it in a finite number of steps. Bitcoin mining rewards also keep halving, getting closer and closer to zero but never reaching it even after a certain number of halvings. In this way, the gradual decrease in Bitcoin mining rewards is similar to Zeno’s paradox: the rewards get closer and closer to zero without ever actually reaching it. Miners don’t get an exact zero reward until the limit is reached.
What Happens When Rewards Are Halved
One goal of halving is to change how miners make money over time so that the Bitcoin network can last a long time. Instead of getting block rewards, they will only get transaction fees. As mining rewards go down over time, transaction fees become more important for miners. This will keep the network running even after all bitcoins have been mined.
Halving events also create a deflationary monetary situation that, in theory, makes Bitcoin more valuable over time, as long as demand stays the same or grows and supply goes down.
There are a lot of things that affect the price and supply of bitcoins after the halving, so it’s not easy to figure out. For example, miners who used to sell their rewards right away to cover costs may now choose to keep their smaller rewards, hoping that the price will go up in the future. This could impact Bitcoin supply, driving up the price even more.
Halving also always has a psychological effect on the market for cryptocurrencies. A lot of investors think that halving events may lead to the market going up; they get ready for price changes. When halving events happen, cryptocurrency exchanges often see more trading as traders try to encash the expected profits due to price movements.
There are still about 1.3 million bitcoins to be mined. Each halving will make the supply of Bitcoins even lower, making every Bitcoin more precious.
As the Bitcoin market grows up and halvings keep lowering mining rewards, transaction fees will become more and more important for keeping the network safe. The halving events will always be important in shaping the future of cryptocurrency and the larger digital asset ecosystem.
