Is bitcoin mining profitable at home in 2026? How mining works and the maths

For most people, mining bitcoin at home is not profitable in 2026 unless electricity is very cheap or free, because the network’s total computing power passed 1,000 exahashes per second and each block pays 3.125 BTC plus fees, shared by the whole world. A modern ASIC can cover its power bill at low electricity prices, but the hardware cost, noise, heat and the four-yearly halvings make the maths tight. This page gives the formula and a worked example so you can plug in your own numbers. Crypto assets are volatile and this is not financial advice.

How does bitcoin mining work?

Bitcoin mining is the process of adding new blocks to the blockchain by proof of work. Miners repeatedly hash a candidate block header until the result falls below a target set by the network. The first miner to find a valid hash broadcasts the block and collects the block subsidy, currently 3.125 BTC, plus the transaction fees in that block.

Bitcoin.org describes mining as “a competitive and decentralized process” that creates new coins until “a total of 21 million bitcoins” exist (bitcoin.org FAQ). The work is pure trial and error: there is no shortcut to finding a valid hash, so a miner’s chance of winning a block is proportional to its share of the network’s total hashrate. Bitcoin Core’s developer guide explains that a block is valid only if its header hashes to a value below the target, which is what makes rewriting history expensive (Bitcoin developer guide).

Our bitcoin explainer covers the supply schedule and fees in more detail. Miners choose which transactions to include, usually by fee rate.

What are hashrate and difficulty?

Hashrate is how many hashes per second a miner or the whole network computes. Difficulty is the number that sets how hard it is to find a valid block. Every 2,016 blocks, roughly two weeks, the network compares how long those blocks took against the two-week ideal and raises or lowers difficulty so blocks keep arriving about every 10 minutes.

The developer guide puts the ideal at “1,209,600 seconds (two weeks)” for each set of 2,016 blocks (Bitcoin developer guide). When more machines switch on, blocks come faster, difficulty rises at the next adjustment and every miner’s share of rewards shrinks. As of 7 November 2026, mempool.space estimated network hashrate at about 1,007 EH/s (1 EH/s is one million TH/s) and difficulty at about 148.4 trillion (mempool.space).

That is the key fact for home miners: your income depends not on your machine alone but on your share of a total that keeps growing as newer, more efficient hardware ships.

How do halvings affect mining income?

The block subsidy halves every 210,000 blocks, roughly every four years. It fell from 6.25 to 3.125 BTC at block 840,000 in April 2024, and the next halving, to 1.5625 BTC, is due at block 1,050,000. With the chain at around block 975,000 in early November 2026, that is about 75,000 blocks away, or roughly 17 months at 10 minutes per block.

At each halving, every miner’s income in BTC drops by half overnight unless transaction fees make up the gap. Fees are currently small: across the 144 blocks ending at block 974,947, miners earned 453.9 BTC in total, of which 450 BTC was subsidy and 3.9 BTC (under 1%) was fees, about 0.027 BTC per block (mempool.space reward stats). A mining plan that only works at today’s subsidy needs to pay back its hardware well before block 1,050,000.

Can you mine bitcoin with a GPU or a laptop?

Not in any meaningful way. Bitcoin uses the SHA-256 algorithm, and application-specific integrated circuits (ASICs) built only for SHA-256 are many thousands of times more efficient than graphics cards or laptop CPUs. Bitcoin.org says plainly that “the only cost-effective method of mining today is using specialized hardware.” A GPU or laptop would spend far more on electricity than it could ever earn.

GPU mining made sense for Ethereum until it moved to proof of stake in 2022 (see our Ethereum explainer), and some smaller proof-of-work coins can still be mined with GPUs. For bitcoin, the choice is which ASIC, not whether to use one. Small open-source or “lottery” devices exist for hobbyists, drawing a few watts to around a kilowatt; they are fun and educational but, as the maths below shows, their expected income is tiny.

Is bitcoin mining profitable at home? (the electricity maths)

Work it out in three numbers: your share of network hashrate, the BTC paid per day, and your electricity cost per day. With an illustrative 300 TH/s ASIC drawing 3,850 W, the network at 1,007 EH/s and 3.152 BTC paid per block, you would expect about 0.000135 BTC a day, while the machine uses 92.4 kWh, which costs $13.86 a day at an illustrative $0.15 per kWh.

The example machine is Canaan’s Avalon Miner A16XP-300T, which Canaan’s shop lists at 300 TH/s, 3,850 W and 12.8 J/TH, for $4,800 as a futures order in November 2026 (Canaan official shop). The formula:

1. Your share = your hashrate / network hashrate = 300 TH/s / 1,007,000,000 TH/s = about 0.000000298.
2. BTC per day = share x 144 blocks x (3.125 subsidy + about 0.027 fees) = about 0.000135 BTC (13,500 satoshis), before any pool fee.
3. Energy per day = 3.85 kW x 24 h = 92.4 kWh. Efficiency check: 12.8 J/TH x 300 TH/s = 3,840 W.
4. Cost per day = 92.4 kWh x your price per kWh.
5. Break-even BTC price = cost per day / BTC per day.

Compare the break-even figure with the current BTC price from an exchange or price index yourself: if the market price is below your break-even, you lose money on electricity before counting the hardware. If it is above, you then need the surplus to repay the machine (the $4,800 in this example) before the next difficulty rises and the 2028 halving cut income. Household electricity in much of Europe costs well above $0.15 per kWh, which is why most home setups in those countries run at a loss.

Plug in current numbers from mempool.space (hashrate, fees per block) and your electricity bill (the all-in price per kWh including network charges and taxes). Difficulty usually rises over time, so a calculation that only just breaks even today will not next month.

Do you need a mining pool?

For steady income, yes. A pool combines many miners’ hashrate, finds blocks more often and splits rewards in proportion to the work each miner contributes, minus a pool fee. Solo mining a home ASIC means waiting for an event that, at 300 TH/s against 1,007 EH/s, would be expected roughly once every 64 years on average, with no payment in between.

Pools are concentrated. Over the month to 7 November 2026, mempool.space attributed 25.6% of blocks to Foundry USA, 20.5% to AntPool, 16.8% to F2Pool, 9.4% to ViaBTC, 5.5% to SpiderPool and 5.2% to MARA Pool, out of 4,590 blocks (mempool.space mining pools). The top three found about 63% of blocks. Pools differ in payout method, minimum payout and fee, and some require identity verification.

The solo odds come from the same maths: 0.000000298 share x 144 blocks a day gives about 0.000043 expected blocks a day, or one block every 23,000 days or so (about 64 years). “Lottery” miners accept those odds for the small chance of a full 3.125 BTC reward; it depends on luck, not on an income plan.

What else does home mining involve: noise, heat and power?

A full-size ASIC is a 3 to 4 kilowatt fan heater that runs all day. It is loud enough that most people keep it in a garage or outbuilding, needs a circuit rated for a continuous high load, and dumps all of its power as heat. Some home miners reuse that heat to warm a room or water, which changes the economics only if you would have paid for that heat anyway.

• Electrical safety: a 3,850 W continuous load is beyond many standard household sockets; have an electrician check the circuit, and do not run mining hardware on extension leads.
• Noise: industrial air-cooled units use high-speed fans; vendor quiet or “home” editions trade hashrate for lower noise.
• Heat reuse: heating with a miner is electrically the same as resistive heating, with the mining reward as a partial rebate. Heat pumps deliver more heat per kWh, so compare honestly.
• Hardware life and resale: each new generation lowers J/TH, so older machines fall to the bottom of profitability first.
• Tax and rules: mining rewards are usually taxed as income when received and some countries regulate or restrict mining loads; see our crypto tax overview.

Is cloud mining a scam?

Many cloud-mining offers are scams, and the legitimate ones rarely beat buying the coin. Cloud mining sells contracts for a share of a provider’s hashrate, but you cannot verify the machines exist. In the HashFlare case, US prosecutors alleged that customers bought more than $550 million of contracts between 2015 and 2019 from a service that did not have the mining equipment it claimed.

The US Department of Justice announced the arrest of HashFlare’s two founders in Tallinn on 21 November 2022 on an 18-count indictment. According to the indictment, HashFlare’s website showed customers the virtual currency their mining had “supposedly generated”, and victims paid more than $575 million to the founders’ companies in total, including a related “virtual currency bank” called Polybius (US Department of Justice).

Warning signs in cloud-mining offers:

• Fixed daily returns or “guaranteed” profit regardless of difficulty, fees or halvings.
• Referral bonuses for recruiting others, and dashboards that show growing balances you cannot withdraw without a new “fee”.
• No named company, no location of the mining sites, no way to check the hashrate on a public pool.
• Contract maths that would pay back faster than buying an ASIC yourself; if it did, the provider would mine for itself.

Crypto investment fraud is the largest category of crypto losses reported to the FBI; our guide to buying bitcoin safely covers the common patterns.

Are free bitcoin mining apps legit?

Phone apps that promise to “mine” bitcoin for free do not mine bitcoin: a phone’s processor cannot compete with ASICs, and running at full load would damage the battery long before it earned a satoshi. At best these apps pay tiny rewards for watching ads; at worst they are fronts for fake investment platforms or malware that asks for deposits, recovery phrases or upgrade fees.

The pattern is the same as old faucet sites: small “earnings” that you can only withdraw after reaching a threshold, buying a “booster”, or recruiting friends. Our pages on free bitcoin offers and scams and whether free bitcoin sites are legit go through how to tell harmless reward apps from fraud. Never enter a wallet recovery phrase into an app to “connect” it for mining payouts.

What are the alternatives to mining at home?

If the goal is to own bitcoin, buying it on a regulated exchange is cheaper than mining for most households, because you skip the hardware, electricity, noise and difficulty risk. If the goal is to support the network or learn how it works, running a full node costs far less power than mining and verifies every rule yourself. Small hobby miners are a learning tool rather than income.

• Buy directly: fund an exchange by bank transfer and withdraw to your own wallet (how to buy bitcoin).
• Run a node: validates transactions and blocks without competing for rewards.
• Price exposure only:spot bitcoin ETFs hold bitcoin for you inside a brokerage account.
• Proof-of-stake rewards: staking ETH works differently, with no hardware arms race; see how to stake Ethereum.