Bitcoin's 4-Year Cycle, Explained
Halvings, bull runs, and the question everyone really asks: is it going up? Here is the honest version — what the pattern is, and why nobody can promise you a price.
The Question Behind the Question
When people first look at Bitcoin, the question on their mind is almost always some version of: "Is now a good time to buy? Is it about to go up?" It is a completely natural thing to wonder. And there is a famous idea that seems to answer it — the four-year cycle.
The cycle is real enough to be worth understanding. But the most useful thing it can teach you is not when to buy — it is why trying to time the market is so hard, and what to do instead.
First, the Halving
The cycle is tied to an event built into Bitcoin's code called the halving. Roughly every four years — precisely, every 210,000 blocks — the reward that miners earn for adding a new block is cut in half. That slows down the rate of new Bitcoin being created.
2012 · 2016 · 2020 · April 2024 · next: ~2028
Each halving makes new supply scarcer. The theory goes: less new selling pressure plus steady demand tends to push the price up — eventually. Historically, the big moves have shown up roughly 12 to 18 months after each halving.
The Rhythm People Noticed
Look back at past cycles and a loose pattern appears: a quiet bottom, then a halving, then a run-up to a peak about a year or so later, then a long drawdown that can erase 50–80% of the price, then a slow recovery into the next halving. About once every four years.
bottom → halving → peak (~12–18 mo) → drawdown (~1 yr) → repeat
The Catch: Diminishing Returns
Here is the part the hype tends to skip. Each cycle's peak gain has been dramatically smaller than the one before it. By one analysis (the work at levels.io), the gains from each cycle's low look like this:
*The 2024 cycle is still recent and figures vary by source and method — treat these as illustrative, not precise.
Why the shrinking gains? Mostly math. Moving a trillion-dollar asset takes vastly more new money than moving a ten-billion-dollar one. As Bitcoin grows up, the percentage swings get smaller. That is not a sign of weakness — it is what maturing looks like. But it does mean the eye-watering returns of the early cycles are unlikely to repeat.
The Models — and Why They Keep Failing
A lot of smart people have tried to turn the cycle into a formula. It is worth knowing the famous ones precisely because they show how hard this is:
Stock-to-Flow
Tied price to scarcity and, after the 2024 halving, pointed at roughly $500,000. Bitcoin instead peaked near $126,000 in October 2025 — off by about 75%. A clean, popular model that simply did not hold up.
The Rainbow Chart
A colorful band chart from "buy" to "bubble." Fun to look at, but most people now treat it as a mood ring, not a forecast. In mid-2026 the price slipped into its lowest "Bitcoin is dead" band — for only the second time ever.
The Power Law
Fits a long-term trend line to Bitcoin's whole history. It has tracked the slower, maturing market better than Stock-to-Flow — but it is still a trend line, not a promise about any given month.
The Liquidity Argument
A growing view: the halving may matter less than global liquidity. When money is cheap and plentiful, Bitcoin tends to rise; when money is tight, it falls — roughly regardless of where the halving lands. If true, the four-year clock is only part of the story.
So… Is the 4-Year Cycle Dead?
Honestly? Nobody knows — and that is the truth worth holding onto. "The cycle is dead" gets declared almost every cycle, and so far the rough rhythm has kept showing up. But Bitcoin is bigger now. ETFs, large institutions, and the wider economy all pull on the price in ways they did not in 2012.
The cycle might be weakening. It might just be running late. Anyone who tells you they know for certain is selling something.
What This Actually Means for You
If even the famous models miss by 75%, what hope does a beginner have of buying the exact bottom and selling the exact top? Almost none — and that is freeing once you accept it. The people who have done well with Bitcoin mostly did one boring thing:
They bought a little, regularly, over a long time — and held. Time in the market, not timing the market. In Bitcoin circles this is called stacking sats.
It also helps to change the question. Instead of "how high will the price go?" ask "how much of the network do I want to own?" The price will do whatever it does in the short term. Owning a slice of a fixed, global monetary network — and actually holding your own keys — is the part you control.
Education, not financial advice
Nothing here is a prediction or a recommendation to buy or sell. Past patterns do not predict future prices, and Bitcoin can be volatile. Never put in more than you can afford to lose, and make your own decisions.
Sources & further reading: cycle and diminishing-returns framing from levels.io; model context from the Stock-to-Flow, Rainbow Chart, and Power Law communities. Figures cited are as of mid-2026.
Common questions
What is the Bitcoin 4-year cycle?
It is a pattern people have noticed where Bitcoin tends to rise into a peak roughly 12 to 18 months after each halving, then falls into a long drawdown, then recovers — about once every four years. It is an observed rhythm, not a guarantee.
What is the Bitcoin halving?
Roughly every four years (every 210,000 blocks), the reward miners earn for adding a block is cut in half. This slows the rate of new Bitcoin entering circulation. Halvings happened in 2012, 2016, 2020, and April 2024.
When is the next Bitcoin halving?
The next halving is expected around 2028, since halvings occur about every four years. The exact date depends on how quickly blocks are mined.
Is the Bitcoin 4-year cycle dead?
Nobody knows. The cycle gets declared dead almost every cycle. As Bitcoin has grown larger and more institutions and ETFs have arrived, some argue the old boom-and-bust rhythm is flattening out. It may be weakening, or it may simply be running on a different schedule.
Can anyone predict the Bitcoin price?
No one can reliably predict the price. Famous models like Stock-to-Flow have been badly wrong, and even the better-fitting ones are trend lines, not promises. Treat every price target you see — including bullish ones — with healthy skepticism.
Should I try to time the market?
Most people are better served by not trying to time it. Buying a fixed amount on a regular schedule (often called dollar-cost averaging, or stacking sats) removes the pressure of guessing tops and bottoms, which almost nobody gets right.
Want to learn Bitcoin calmly, without the hype? Download Bitcoin Basics for Everyone and start at your own pace.