What Is Bitcoin Halving and Why Does It Matter?

If you’ve spent any time around crypto, you’ve probably heard people talking about “the halving.” It regularly pops up on social media. You’ve possibly also heard it mentioned in Podcasts and YouTube videos. And, no doubt, read about it on crypto news sites. Bitcoin halving sounds dramatic. And in many ways, it is. That is because it is one of the most important events in the Bitcoin network. Halving directly affects how new coins are created. It also influences how miners earn rewards and how scarce Bitcoin becomes over time. If you’re planning to invest in this type of digital asset, especially using a long-term strategy like dollar-cost averaging, it’s definitely something worth understanding. This post is designed to break it down for you in simple terms.

What is Bitcoin halving?

A Bitcoin halving is an event in which the Bitcoin block reward that is given to miners is cut in half. Miners are the people and companies who use powerful computers to secure the Bitcoin network and also confirm transactions. When they successfully add a new block to the blockchain, they receive Bitcoin mining rewards. This reward is how new Bitcoin enters circulation. You might see it referred to as the BTC issuance rate. When Bitcoin first launched in 2009, miners earned 50 BTC per block. However, after the first halving in 2012, the amount dropped to 25 BTC. Since then, it has further dropped to 12.5 BTC in 2016 and 6.25 BTC in 2020. After another halving in 2024, the reward currently sits at 3.125 BTC per block. This reduction occurs automatically every 210,000 blocks, which roughly translates to a period of every 4 years. If you’re looking to buy Bitcoin in Australia, platforms like bitcoin.com.au make it easy to get started. Through them, you can quickly set up an account and purchase BTC. You can even automate your investing strategy to meet your goals.

How exactly does Bitcoin halving work?

Bitcoin has a fixed supply cap of 21 million coins, which is built into its code. No one can change it unless the ENTIRE network agrees. Every time a new block is added to the blockchain, miners receive a block reward. This is at the core of how Bitcoin’s monetary policy works. Indeed, rather than acting like a central bank that prints money, Bitcoin follows a predictable issuance schedule. The halving reduces the BTC issuance rate. As a consequence, fewer new coins are introduced into the market. This can lead to Bitcoin’s inflation rate also declining over time. It is important to note that the process is automatic and has been written into the protocol from day one. It is not voted on by a governing board or administered by governments or financial institutions. You should also be aware that mining still continues after a halving, albeit with smaller rewards. Additionally, the network adjusts via a mechanism called Bitcoin mining difficulty. This amount depends on how much computing power is required to secure the network. Ultimately, the system is designed to keep producing blocks roughly every 10 minutes. Irrespective of how many miners are involved.

Why was Bitcoin designed to halve?

Bitcoin was created to be scarce, which is a major reason why some investors see it as being valuable. To put this into context, gold is scarce because it’s difficult to mine and limited in supply. However, Bitcoin is scarce because its supply is mathematically restricted. There will only ever be 21 million coins. Through halving, that scarcity becomes stronger. Indeed, as each halving reduces the pace of Bitcoin supply reduction, it means that fewer coins are available to meet demand. Over time, this controlled issuance lowers Bitcoin’s inflation rate. While it's true that in the early years inflation was high because many new coins were being created, as halvings continue, Bitcoin’s inflation rate will move closer to zero. That’s very different from traditional currencies, such as the USD, where supply can expand based on policy decisions. One positive about Bitcoin’s halving schedule is that it creates predictable scarcity. As a result, people can see it coming years in advance. That predictability is a major reason halving events attract so much attention from investors and stakeholders.

When is the next Bitcoin halving?

As mentioned, Bitcoin halvings occur roughly every 4 years. However, they are based on block production rather than calendar dates. The most recent halving took place in 2024. So, the next one is expected around 2028. The exact timing depends on how quickly blocks are mined. That is because it is triggered every 210,000 blocks. This repeating pattern is known as the Bitcoin halving cycle. Each one follows a similar structure:

• Halving occurs
• New supply drops
• Market reacts over time

What has happened to Bitcoin’s price after previous halvings?

In the lead-up to a halving, many serious investors study Bitcoin's price history after previous events to identify potential patterns they can strategy around. For instance, after the 2012 halving, Bitcoin experienced a major bull run in the following year. However, the 2016 halving was followed by the 2017 rally, while the 2020 halving preceded strong price growth that took place in 2021. These historical cycles show that reduced supply from a halving, combined with growing demand, can influence price movements. However, it is worth noting that markets do not move in straight lines. Instead, there are corrections, volatility, and external economic factors all at play that can affect current digital asset values.

How Does Bitcoin Halving Affect Miners?

As you have read, halving directly impacts Bitcoin mining rewards. Mainly, this is because when the block reward drops, miners earn fewer new coins for the same amount of work. That can pressure less efficient operations. Especially if Bitcoin’s price does not rise at the same time. That said, the network generally adjusts over time. In fact, Bitcoin mining difficulty recalibrates based on total computing power. Therefore, if some miners shut down, the level of difficulty decreases, which makes it easier for the remaining miners to find blocks. Additionally, miners also earn transaction fees. For some, this becomes more important as block rewards shrink.