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What is the Bitcoin Halving?
Approximately every four years — or more precisely, every 210,000 blocks — the reward that Bitcoin miners receive for adding a new block to the blockchain is cut in half. This event is called the halving (sometimes "halvening").
It was programmed into Bitcoin's code by Satoshi Nakamoto as a mechanism to control supply. Bitcoin has a hard cap of 21 million coins. By reducing the rate at which new coins are created over time, the halving ensures Bitcoin becomes progressively scarcer — similar to gold becoming harder to mine as easily accessible deposits are exhausted.
Before the 2024 halving, 900 new bitcoins entered circulation every day. After it: just 450. After the 2028 halving, it will drop to 225.
I bought my first Bitcoin in late 2021 — terrible timing, right into the peak. But understanding the halving cycle gave me conviction to hold through the 2022 bear market. The halving isn't a magic price catalyst. It's a structural mechanism that gradually reduces sell pressure from miners. Combined with growing institutional demand, it creates the conditions for long-term appreciation. I don't trade the halving — I accumulate before it and hold through it.
The 2024 Halving: What Happened
The fourth Bitcoin halving occurred on April 20, 2024, at block 840,000. The block reward was cut from 6.25 BTC to 3.125 BTC.
The market context was unique: for the first time in Bitcoin's history, a major halving occurred after the launch of Bitcoin spot ETFs. BlackRock, Fidelity and nine other asset managers had launched Bitcoin ETFs in January 2024, creating an unprecedented institutional demand channel.
Key price milestones:
- Halving day price: ~$63,000
- Pre-halving ATH (March 2024): $73,750 — the first halving cycle where Bitcoin hit an ATH before the halving
- Post-halving ATH (January 2025): ~$108,000
- As of March 2026: ~$71,000–85,000 range
The 2024 cycle delivered more modest gains than previous cycles — approximately 70% from halving price to ATH, compared to 676% in 2020, 2,753% in 2016 and 9,335% in 2012. This is consistent with diminishing returns as Bitcoin's market cap grows and the asset matures.
All 4 Halvings: History & Price Data
Why the Halving Matters
The halving's direct effect is mechanical: it cuts the daily supply of new Bitcoin in half, reducing selling pressure from miners who must sell to cover electricity and hardware costs.
But the psychological effect is arguably just as important. The halving:
- Generates media coverage — every halving cycle brings new waves of retail investor attention
- Reinforces Bitcoin's scarcity narrative — reminding the market that Bitcoin is fundamentally deflationary
- Pushes less efficient miners out — consolidating the mining industry and potentially increasing network security long-term
- Reduces Bitcoin's inflation rate — after the 2024 halving, Bitcoin's annual inflation rate dropped below 1%, lower than most central bank targets
Are Returns Diminishing?
Yes — clearly. Each halving produces smaller percentage gains than the previous one. This is mathematically inevitable: as Bitcoin's market cap grows into the trillions, it becomes harder for it to 10x. A 10x from $1 trillion market cap requires $10 trillion in new capital — roughly equal to the entire gold market.
However, diminishing percentage returns don't mean diminishing absolute returns. Moving from $60,000 to $120,000 is a smaller percentage gain than moving from $8,000 to $66,000 — but in dollar terms, a $60,000 gain per coin is larger.
The 2024 cycle also introduced a new dynamic: Bitcoin ETFs absorbed supply much earlier in the cycle, potentially front-loading demand that would previously have arrived post-halving. This may explain the unusually high pre-halving ATH in March 2024.
The 2028 Halving: What to Expect
The fifth Bitcoin halving is expected in the first half of 2028, at block 1,050,000. The block reward will drop from 3.125 BTC to 1.5625 BTC.
By 2028, approximately 94% of all Bitcoin will have been mined. The supply shock from the halving will be smaller in absolute terms — but so will daily miner selling pressure.
Key factors to watch before 2028:
- Continued ETF inflows — BlackRock's IBIT ETF alone holds over 500,000 BTC. If institutional demand continues growing, the 2028 halving effect may again be front-loaded
- Government strategic reserves — the US, El Salvador and others have discussed or implemented Bitcoin reserves. Sovereign demand is a new variable
- Global macro environment — interest rates, inflation and M2 money supply have proven as influential as the halving itself
- Regulatory clarity — MiCA in Europe and the GENIUS Act in the US are setting frameworks that make institutional participation easier
Investment Strategy Around Halvings
Most research suggests that trying to time the halving precisely is less effective than systematic accumulation before and through it:
- DCA 12–18 months before the halving — historical data suggests the best average entry prices come in the 6–18 month pre-halving window
- Don't sell on halving day — the immediate post-halving period is often flat or even down before the rally begins
- Hold through the cycle — ATHs have historically come 9–18 months after each halving
- Watch the Fear & Greed Index — extreme fear periods during the post-halving consolidation have historically been accumulation opportunities