What Is a Mining Pool? How Bitcoin Miners Share Rewards

A mining pool is a group of crypto miners who combine their computing power to find blocks more often, then split the reward based on how much work each one contributed. If you have been wondering what a mining pool is and why almost every Bitcoin miner belongs to one, the short version is this: pools trade a small, rare jackpot for small, steady paychecks.

How a Mining Pool Works, Using an Office Lottery

Think of an office lottery pool. Twenty coworkers chip in and buy tickets together. Any one person would almost never win alone, but the group wins more often, and the prize gets split by how many tickets each person bought.

Bitcoin mining runs on the same logic. Miners race to find a block by making trillions of guesses per second, and the winner collects the block reward. (Our guide to how Bitcoin mining works covers that race in detail.) A single home machine competing against the entire network could wait years for a win. Inside a pool, it contributes to a shared effort that wins blocks regularly.

The tricky part is proving how much work each member did. Pools solve it with shares.

What a Share Is and Why Pools Count Them

The Bitcoin developer guide explains that a pool sets its own target "a few orders of magnitude" easier than the real network target. Your miner keeps hashing as usual, but every time it finds a result that clears the pool's easier bar, it sends that result to the pool. That result is called a share, because it proves you did a share of the work.

Most shares are not good enough to win a real block. Every so often, though, one of them also clears the network's much harder target. The pool submits that one as a block, collects the reward, and pays members according to the shares they turned in.

The developer guide gives a clean example of the math. If the pool's target is 100 times easier than the network's, then each share is worth roughly 1/100 of a block's payout. Shares act like a time card. They show steady effort even when your own machine never lands the winning guess.

Pools usually talk to miners through a protocol called Stratum. Under that setup the pool builds the block template, and your hardware simply does the hashing.

PPS, FPPS and PPLNS: How Pools Split the Reward

Not every pool pays the same way. Three common payout styles show up again and again:

• PPS (pay per share): you get a fixed amount for each valid share, right away, whether or not the pool finds a block. The Bitcoin Wiki notes that this shifts the luck risk onto the pool operator, who has to keep paying through dry spells.
• FPPS (full pay per share): like PPS, but your payment also includes a share of the transaction fees inside blocks, not just the fixed new coins.
• PPLNS and similar systems: you are paid only when the pool actually finds a block, based on your shares in a recent window. Your income swings more from day to day because it follows the pool's actual luck.

Here is how that looks at real pools, based on their own help pages at the time of writing (November 2026):

• Braiins Pool uses FPPS with a 2.5% pool fee, sends payouts daily at 9:00 UTC, and has an on chain minimum payout of 0.0002 BTC. It also offers payouts over Lightning.
• F2Pool lists Bitcoin payouts as "PPS at 4%" and pays out balances of at least 0.001 BTC once a day.
• OCEAN uses a system called TIDES, designed so miners are paid directly inside the block's reward transaction instead of the pool holding their coins first.

Fees and minimums change, so check the pool's own page before you point hardware at it.

How Much a Block Is Worth

Since the April 2024 halving, each new Bitcoin block creates 3.125 BTC, and the miner also collects the transaction fees inside it. According to mempool.space, recent blocks paid about 3.13 to 3.14 BTC in total, with fees averaging around 0.02 BTC per block across the most recent 144 blocks. That is the pot the pool splits after taking its fee.

Where You Run Into Mining Pools

Even if you never mine, pools touch your life as a Bitcoin user. Every block on the blockchain is found by someone, and nearly all of them are found by pools. Block explorers label each new block with the pool that mined it.

The biggest names hold a large slice of the network. Over the past week, mempool.space credited these pools with the most blocks:

• Foundry USA: about 26.7%
• AntPool: about 19.3%
• F2Pool: about 16.3%
• ViaBTC: about 9.5%

Those four alone found a bit over 70% of blocks in that window. Pools also come and go. Binance, for example, announced it was closing its pool, which we covered in our story on the Binance Pool shutdown.

You may also see the phrase "mining pool address." That usually means the pool's Stratum server address, the URL you type into your mining hardware's settings so it knows where to send shares.

Limits and Common Myths About Mining Pools

Myth: joining a pool makes you earn more. It doesn't. Over the long run, your expected earnings come from your share of total network hashing power. A pool smooths out the timing so you get paid often instead of waiting for a lucky day. After the pool fee, your long run total is actually a little lower than perfect solo luck would average.

Myth: you can join a pool from your phone and make money. Phones are far too slow to matter against specialized mining machines. Apps that promise phone mining income are often scams, a topic we cover in Bitcoin mining apps for phones.

Myth: a pool owns the miners. A pool coordinates work, but the machines belong to their owners, who can point them at a different pool by changing the pool address in their settings. That freedom is one reason a big pool share is not the same as one company controlling that much hardware.

A real limit: trust. With most pools, the operator holds your earnings until payout, decides which transactions go in blocks, and sets the fee terms. That's why some miners prefer pools that publish their payout math or pay directly from the block.

Before You Join a Mining Pool

If you are thinking about mining, a pool is almost certainly how you would do it. Start by running the numbers on electricity and hardware, since that decides everything else; our breakdown of whether Bitcoin mining is profitable at home walks through it. Then compare pools on three things: payout method, fee, and minimum payout.

If you just hold Bitcoin, the useful takeaway is simpler. When you see a block "mined by Foundry USA" or "mined by AntPool," that is a team of miners sharing the work, not a single giant computer. You can find more explainers like this in our crypto section.