Four halvings have reduced Bitcoin’s block subsidy from 50 BTC to 3.125 BTC. Here is what changed each time, what did not, and how to read the next halving without mistaking history for a promise.
By Minerium Editorial Team | Updated September 8, 2026 | Approx. 10-minute read
The short answer: Bitcoin has completed four halvings: November 2012, July 2016, May 2020, and April 2024. Each occurred at a scheduled block height and cut the block subsidy by 50%. The current subsidy is 3.125 BTC per block. The fifth halving will occur at block 1,050,000, likely in April 2028, when the subsidy falls to 1.5625 BTC. The calendar date is estimated; the block height is fixed by the protocol.
Bitcoin’s supply schedule is deliberately boring. Markets are not. That tension explains why halving dates attract so much attention: issuance changes predictably, while price, mining economics, and investor demand remain uncertain. This updated guide separates those mechanical facts from the stories often built around them.
Bitcoin Halving Explained: What Changes and What Does Not
A Bitcoin halving is a protocol event that cuts the block subsidy paid to miners by half every 210,000 blocks. The subsidy began at 50 BTC in 2009 and now stands at 3.125 BTC. Bitcoin.org’s live halving reference lists the completed events and the next fixed trigger at block 1,050,000.
What changes. The number of newly issued bitcoin in the coinbase transaction falls by 50%. At a target of roughly 144 blocks per day, the 2024 halving reduced average new issuance from about 900 BTC to about 450 BTC per day.
What does not change. The 21 million supply limit, transaction rules, and proof-of-work competition continue. Miners still search for a valid block hash, and total compensation still combines the subsidy with transaction fees.
Why the timing moves. Bitcoin targets an average block interval of about 10 minutes and adjusts mining difficulty every 2,016 blocks. Actual blocks arrive unevenly, so a projected calendar date can shift even though the halving height cannot.
For the mechanics behind that process, see Bitcoin’s Proof of Work system and the distinction between valid and winning SHA-256 shares.
Bitcoin Halving History at a Glance
Bitcoin’s four completed halvings all followed the same subsidy rule, but they unfolded in very different markets. Prices below are approximate snapshots because exchanges and time cutoffs differ.
| Event and date | Block | Subsidy change | BTC price near event | Later reference point |
|---|---|---|---|---|
| First Nov. 28, 2012 |
210,000 | 50 → 25 BTC | ≈ $12.35 | ≈ $1,056 1 year later |
| Second Jul. 9, 2016 |
420,000 | 25 → 12.5 BTC | ≈ $650 | ≈ $2,528 1 year later |
| Third May 11, 2020 |
630,000 | 12.5 → 6.25 BTC | ≈ $8,600 | ≈ $56,911 1 year later |
| Fourth Apr. 20, 2024 |
840,000 | 6.25 → 3.125 BTC | ≈ $63,800 | ≈ $126,080 Oct. 6, 2025 high |
Sources: Bitcoin.org halving history, Bloomberg-based historical price table published by ProShares; CoinWarz event-price reference; and CoinGecko data reported by Axios for the October 2025 high. Historical prices are not directly comparable across exchanges and intraday cutoffs.
2012: Bitcoin’s First Halving
The first halving cut the subsidy from 50 BTC to 25 BTC at block 210,000. Bitcoin traded near $12, and the market was small and thinly traded. One year later, Bloomberg-based data placed the price near $1,056. That extraordinary percentage move came from a tiny base and should not be treated as a template for a mature market.
2016: The Second Halving
At block 420,000, the subsidy fell from 25 BTC to 12.5 BTC. Bitcoin traded near $650. Its one-year price gain was large but far smaller in percentage terms than after 2012, and the well-known 2017 peak arrived roughly 17 months after the halving.
2020: The Third Halving
The third halving reduced the subsidy to 6.25 BTC at block 630,000. Bitcoin was near $8,600 amid the economic shock and extraordinary monetary response of 2020. It reached roughly $56,900 one year later, then set another cycle high in November 2021. The pandemic, global liquidity, institutional adoption, and crypto-specific events all overlapped with the supply change.
2024: The Fourth Halving in the Spot-ETP Era
Block 840,000 arrived on April 20, 2024 UTC and reduced the subsidy to 3.125 BTC. Bitcoin traded around $63,800. This cycle differed from the first three because U.S. spot bitcoin exchange-traded products had begun trading months earlier after the SEC approved exchange rule changes on January 10, 2024. Bitcoin had also surpassed its previous cycle high before the halving, unlike in the first three cycles.
Bitcoin later reached an all-time high of about $126,080 on October 6, 2025, according to CoinGecko data reported by Axios. That peak followed the halving, but chronology alone does not prove that the halving caused the move. ETF demand, liquidity, regulation, leverage, and macroeconomic conditions also mattered.
What Halving History Can and Cannot Tell Us About Price
Direct answer: A halving reduces new supply; it does not guarantee a higher Bitcoin price. Price rises only when demand and market liquidity are sufficient to absorb existing sellers as well as newly mined coins.
The first three post-halving years produced strong gains, and the fourth cycle later set a new record. That is a historical observation, not a reliable forecasting model. Four events are a small sample, and each took place under different adoption, liquidity, regulation, and monetary conditions.
The most defensible causal claim is narrow: a halving cuts the flow of new coins available to miners. Everything after that depends on miner treasury decisions, long-term holder behavior, exchange liquidity, demand for spot ETPs, leverage, interest rates, and broader risk appetite.
Bitcoin Price and Supply in September 2026
At 9:00 a.m. Eastern Time on September 8, 2026, Bitcoin was quoted at $78,345.81 by Fortune’s daily price snapshot. That was about 38% below the October 2025 record, a useful reminder that a post-halving high does not eliminate drawdown risk.
Bitcoin also passed 20 million issued coins on March 9, 2026, at block 939,999. On-chain data summarized by The Block put the issued share above 95.2% of the nominal 21 million cap. “Issued” is more precise than “available”: some bitcoin is provably unspendable, and an unknown amount may be inaccessible because private keys were lost.
What Would $100 at Each Halving Be Worth Now?
The illustration below uses approximate halving prices and the September 8, 2026 snapshot of $78,345.81. It excludes fees, taxes, spread, slippage, custody losses, and any later trading.
| Halving date | Approx. entry price | BTC from $100 | Value at $78,345.81 |
|---|---|---|---|
| Nov. 28, 2012 | ≈ $12.35 | ≈ 8.0972 BTC | ≈ $634,379 |
| Jul. 9, 2016 | ≈ $650 | ≈ 0.15385 BTC | ≈ $12,053 |
| May 11, 2020 | ≈ $8,600 | ≈ 0.01163 BTC | ≈ $911 |
| Apr. 20, 2024 | ≈ $63,800 | ≈ 0.001567 BTC | ≈ $123 |
Illustrative only. Historical prices vary by venue and timestamp. Past performance does not indicate future results.
The Next Bitcoin Halving: What to Expect in 2028
The fifth halving will occur at block 1,050,000 and reduce the subsidy from 3.125 BTC to 1.5625 BTC. A live projection viewed on September 8, 2026 placed the event around April 18, 2028, but the date will move with actual block production. CoinWarz’s countdown methodology uses current height and recent average block time; Bitcoin.org appropriately labels only the year as estimated.
At roughly 144 blocks per day, a 1.5625 BTC subsidy would create about 225 new BTC per day before accounting for variations in block timing. Transaction fees will continue to supplement the subsidy.
How the Halving Affects Miners
The immediate effect is a 50% reduction in subsidy revenue per block, measured in BTC. It does not automatically double every miner’s cost per bitcoin because network difficulty, uptime, electricity prices, machine efficiency, transaction fees, and BTC’s market price can all change.
Less efficient operators face more pressure when revenue falls. Competitive miners respond through lower-cost power, newer specialized ASIC mining chips, better cooling and uptime, treasury management, and pool strategy. Network-scale competition can be understood through Bitcoin’s zettahash-scale hashrate, while pool participants also monitor available pool hashrate.
Difficulty adjustments help keep block production near its long-run target; they do not protect individual miners from unprofitable economics. A miner can run valid hardware, submit valid work, and still fail to discover a block because block discovery is probabilistic.
Bitcoin Block Panning and Halving Risk
Minerium’s Bitcoin Block Panning (BBP) provides access to defined, solo-style Bitcoin mining sessions without requiring the participant to purchase or operate ASIC hardware. According to the current BBP Terms and Product Rules, BBP is not a purchase of bitcoin, a yield product, a pooled investment fund, or a cloud-mining contract that promises returns.
A participant may receive nothing if the session is not tied to a valid block discovery under the applicable rules. Reward handling, transaction-fee treatment, availability, payment methods, location restrictions, verification, and payout checks are governed by the terms shown for the relevant session. A future halving will also reduce the protocol subsidy available for a discovered block unless the product rules change.
Conclusion
Bitcoin halving history is simple at the protocol level and messy at the market level. Four events have cut the subsidy from 50 BTC to 3.125 BTC, and the fifth will cut it to 1.5625 BTC at block 1,050,000. The schedule is predictable; returns are not.
Use the history table to understand issuance, then evaluate mining or market exposure with current data and current rules. To explore mining participation, review how Bitcoin Block Panning works and read the product terms before starting a session.
Frequently Asked Questions
What is a Bitcoin halving?
A Bitcoin halving is a protocol-scheduled event that cuts the block subsidy by 50% every 210,000 blocks. It slows new issuance but does not change Bitcoin’s transaction rules or nominal 21 million cap.
How many Bitcoin halvings have happened?
Four halvings have occurred: November 28, 2012; July 9, 2016; May 11, 2020; and April 20, 2024 UTC. The current block subsidy is 3.125 BTC.
When is the next Bitcoin halving?
The next halving occurs at block 1,050,000 and is currently projected for April 2028. Live estimates can shift because blocks do not arrive at exactly 10-minute intervals.
What will the Bitcoin reward be after the 2028 halving?
The block subsidy will fall from 3.125 BTC to 1.5625 BTC. Miners can also receive transaction fees included in the block.
Does a Bitcoin halving guarantee the price will rise?
No. A halving reduces new supply, but price still depends on demand, liquidity, regulation, leverage, macroeconomic conditions, and investor behavior. Historical gains do not guarantee future returns.
What happens when the block subsidy reaches zero?
Around 2140, the subsidy is expected to round down to zero. Miners would then rely on transaction fees for block-related revenue, assuming Bitcoin continues operating under the current monetary schedule.
Risk note: This article is educational and is not financial, investment, legal, or tax advice. Bitcoin is volatile. Mining and mining-access products involve operational, counterparty, custody, payment, regulatory, and no-reward risks. Verify current prices, terms, eligibility, and legal requirements before acting.