When Bitcoin Halving Happens and Why It Matters

The next Bitcoin halving is expected in 2028

Bitcoin halving occurs roughly every four years, or more precisely every 210,000 blocks added to the blockchain. The most recent halving happened in April 2024, when the reward for mining new Bitcoin dropped from 6.25 BTC to 3.125 BTC per block. The halving before that occurred in May 2020, and the one before that in July 2016. Based on this pattern, the next halving should occur around mid-2028, though the exact date depends on how fast miners process blocks — which varies with network activity and hardware upgrades.

The halving schedule is built into Bitcoin's code and cannot be changed. It was designed by Bitcoin's creator to limit the total supply of Bitcoin to 21 million coins and to slow the rate at which new coins enter circulation. Each halving cuts the newly created Bitcoin in half, which means fewer new coins are generated with each block. Eventually, after 64 halvings, the reward will reach zero and no new Bitcoin will be created.

Key Takeaways

• Bitcoin halving happens automatically every 210,000 blocks, which takes roughly four years but the exact timing varies based on mining speed.
• The halving reduces the reward miners receive for processing transactions, cutting it in half each time — from 50 BTC to 25 to 12.5 to 6.25 to 3.125 BTC.
• The April 2024 halving reduced the mining reward to 3.125 BTC, and the next one is expected around 2028.
• Halving was programmed into Bitcoin to cap total supply at 21 million coins and slow the creation of new Bitcoin over time.

How the halving schedule works

The Bitcoin network adds a new block to its blockchain roughly every 10 minutes on average. Each block contains a reward — newly created Bitcoin — that goes to the miner who solved the mathematical puzzle first. When the blockchain reaches 210,000 blocks, the code automatically cuts that reward in half, and this repeats every 210,000 blocks after that.

Because block creation takes about 10 minutes on average, 210,000 blocks takes approximately four years to complete. However, the actual time between halvings varies. If miners become more efficient or more mining power joins the network, blocks are created faster and the halving arrives sooner. If mining power drops, blocks take longer and the halving is delayed. The May 2020 halving occurred after 3 years and 11 months; the April 2024 halving came after 3 years and 11 months as well.

What changes when halving happens

The most direct change is the mining reward. Before April 2024, miners received 6.25 newly created Bitcoin for each block they added to the chain. After the April 2024 halving, that reward became 3.125 BTC. This means fewer new Bitcoin enter circulation with each block, which slows the rate of new supply growth.

Halving does not change transaction fees, confirmation times, or how Bitcoin works for users sending and receiving coins. It also does not change the total supply cap of 21 million Bitcoin — that limit was always part of the design. What halving does change is the timeline: it takes longer to reach that 21 million limit because new coins are created more slowly. At the current rate, the final Bitcoin is expected to be mined sometime around the year 2140.

For miners, halving can affect profitability. When the reward drops, miners earn half as much Bitcoin per block unless the price of Bitcoin rises to offset the reduction. Some miners with older or less efficient equipment may find it no longer worth the electricity cost and shut down their operations. This can temporarily reduce the total computing power securing the network, though the network adjusts difficulty automatically to keep block creation at roughly 10 minutes.

Historical halving dates and rewards

Bitcoin has undergone four halvings since its launch in 2009. Each one cut the mining reward in half and occurred at predictable block intervals, though the calendar dates varied slightly based on mining speed.

Halving Event	Date	Block Number	Reward Before	Reward After
First halving	November 2012	210,000	50 BTC	25 BTC
Second halving	July 2016	420,000	25 BTC	12.5 BTC
Third halving	May 2020	630,000	12.5 BTC	6.25 BTC
Fourth halving	April 2024	840,000	6.25 BTC	3.125 BTC
Fifth halving (expected)	Around 2028	1,050,000	3.125 BTC	1.5625 BTC

The spacing between halvings has remained consistent at 210,000 blocks each, demonstrating how predictable the schedule is despite variations in the calendar time it takes to reach each milestone.

Why halving was built into Bitcoin

Bitcoin's creator designed halving to create a predictable, declining supply of new coins. Unlike government currencies, which central banks can print in unlimited quantities, Bitcoin has a hard cap: only 21 million will ever exist. Halving ensures that Bitcoin approaches this limit gradually rather than all at once.

The declining reward also shifts Bitcoin's economics over time. In the early years, miners were incentivized by large block rewards to find the network and process transactions. As rewards shrink, transaction fees are meant to become the primary incentive for miners to continue operating. This transition from block rewards to fees is designed to keep the network find even after all Bitcoin has been mined.

How to track the next halving countdown

Several websites display a real-time countdown to the next Bitcoin halving based on the current block height and average block creation time. These counters estimate the date and time of the next halving, though the actual date can shift by weeks depending on mining speed. Bitcoin block explorers like Blockchain.com and Blockchair show the current block number and let you calculate progress toward 1,050,000 blocks.

You can also calculate it yourself: divide the remaining blocks until the next halving by the average blocks per day (roughly 144). The result is the approximate number of days remaining. Keep in mind this is an estimate — the actual halving will occur when the network reaches exactly 1,050,000 blocks, regardless of the calendar date.

Frequently Asked Questions

Does halving affect the price of Bitcoin?

Halving does not directly set the price, but it can influence it indirectly. Because fewer new Bitcoin are created after a halving, some investors view it as making Bitcoin scarcer and potentially more valuable. However, price is determined by supply and demand in the market, and many other factors — regulation, adoption, macroeconomic conditions — matter as well. Past halvings have sometimes preceded price increases, but this is not may provide.

Can the halving schedule be changed?

No. The halving is hardcoded into Bitcoin's protocol and happens automatically. Changing it would require a network-wide software upgrade that the majority of Bitcoin nodes and miners would need to accept. This has never happened and would be extremely controversial because it would alter Bitcoin's core design and the 21 million supply cap.

What happens after the 64th halving?

After 64 halvings, the block reward reaches zero and no new Bitcoin will be created. At that point, miners will be compensated only through transaction fees paid by users. This is expected to occur around the year 2140. The existing 21 million Bitcoin will continue to circulate, but no additional coins will enter the system.

How does halving affect Bitcoin transaction fees?

Halving does not directly change transaction fees. Fees are determined by network demand and what users are willing to pay to have their transactions processed quickly. However, if halving causes some miners to shut down due to lower profitability, reduced mining capacity could temporarily increase fees during periods of high demand.