What Is a Bitcoin Halving and Why Does the Price Move?

Every four years, Bitcoin undergoes an event called a "halving" where the reward that miners receive for processing transactions gets cut in half. This is the most important supply-side event in crypto, and historically, it's preceded massive price increases. The most recent halving occurred in April 2024.

How It Works

Bitcoin miners validate transactions and add them to the blockchain. In return, they receive newly created Bitcoin as a reward. When Bitcoin launched in 2009, the reward was 50 BTC per block. Every 210,000 blocks (roughly 4 years), that reward halves. It went from 50 to 25 (2012), to 12.5 (2016), to 6.25 (2020), to 3.125 (2024). Eventually, around the year 2140, the last Bitcoin will be mined and the reward drops to zero. Total supply is capped at 21 million.

Why It Matters for Price

The halving reduces the rate at which new Bitcoin enters circulation. If demand stays the same or increases while new supply is cut in half, basic economics suggests the price should rise. Miners also need higher prices post-halving to cover their operating costs with fewer coins earned, which creates a higher effective "floor" for the price.

The Historical Pattern

Every previous halving has been followed by a significant price increase — though the timing and magnitude vary. The 2012 halving preceded a run from ~$12 to ~$1,100. The 2016 halving preceded a run from ~$650 to ~$20,000. The 2020 halving preceded a run from ~$8,700 to ~$69,000. The pattern isn't guaranteed to repeat, but three for three is hard to ignore.

Importantly, the price surge doesn't happen immediately at the halving. Historically, the biggest moves came 12-18 months after the event. The 2024 halving puts the projected bull market peak window somewhere in late 2025 through 2026 — which is where we are now.