What is the difference between solo mining and pool mining?
Solo mining means a miner attempts to find Bitcoin blocks independently: if it finds a valid block, it receives the block subsidy plus that block's transaction fees, less any applicable hosted solo service fee; if not, it earns no block reward. Pool mining means many miners contribute hashpower to a shared pool, which tracks each participant's work through shares and pays miners according to a defined payout method.
The core difference is how reward timing, variance, and operational responsibility are allocated. With other conditions equal and ignoring fees and operational losses, pooling reduces payout variance without increasing the probability that a given amount of hashpower finds a block. Actual BTC earnings can still differ because of fees, rejected work, downtime, and the transaction fees included in block templates. The distinction between expected rewards and payout variance is explained in Analysis of Bitcoin Pooled Mining Reward Systems.
This distinction is separate from payout methods such as PPS, PPS+, or PPLNS, which determine how a pool pays its participants and who bears block-finding variance. A miner can also connect to a hosted solo-mining service and remain a solo miner: the successful miner's reward is not shared with other miners, although the service may deduct a fee.
How solo mining works
A solo miner typically obtains a block template — either from its own Bitcoin node or a solo-mining service — and directs its ASIC hardware to repeatedly hash candidate block headers against the Bitcoin network's current target. A valid block is produced only when a hash result meets that target. According to the Bitcoin Developer Guide, in a self-operated solo setup, the coinbase transaction pays the miner the block subsidy and the fees from transactions included in that block. In a hosted solo setup, the miner's proceeds depend on the service's fee and payment rules.
This arrangement has three practical consequences. First, rewards are not pooled among miners: either the miner finds a block and receives the reward after any applicable service fee, or it finds nothing. Second, operational responsibility depends on the setup. A self-operated solo miner maintains its node, mining connection, and block-propagation setup; a hosted service may provide the node, templates, and broadcasting infrastructure, while the miner maintains its hardware and connection to that service. Solo CKPool's service documentation illustrates this distinction. Third, at modest hashpower relative to the network total, a miner may operate for years without finding a block.
How pool mining works
In pool mining, the pool distributes work to connected miners, and each miner's hardware submits shares — proofs of work that meet an easier, pool-defined target but typically do not meet the much stricter Bitcoin network target. Because the pool's share target is easier than the network target, its corresponding share difficulty is lower; shares allow the pool to measure and account for each participant's contributed work without requiring every submission to be a full network-valid block.
Occasionally, a submitted share also satisfies the network target. When this happens, the pool assembles and broadcasts the valid block. A share does not itself generate an on-chain reward; most shares serve only as evidence of contributed work. The Bitcoin Developer Guide describes this share-based mining process.
How miners are paid is a separate question. Under PPLNS, payments depend on the blocks the pool actually finds and the miner's contribution within the relevant share window. Under PPS, the pool pays for valid shares at their theoretical value, less its fee, regardless of whether it finds a block during that period. The operator therefore bears the block-finding variance for that payment component. PPS+ combines PPS accounting for the subsidy component with PPLNS allocation of transaction fees, as described in ViaBTC's payment-method guide.
A large pool's combined hashpower finds blocks more often than a single miner's hashpower would. This supports more frequent distributions under methods tied to actual blocks, while PPS accounting allows earnings to be credited without waiting for a pool block. Actual withdrawal timing remains subject to the pool's payment rules.
Solo mining vs. pool mining: side-by-side comparison
| Factor | Solo mining | Pool mining |
|---|---|---|
| Who receives the block reward | The miner that finds the valid block, less any hosted service fee | Typically the pool; miner payments follow its payout method, with PPS-based payments not conditional on each block found |
| Payout pattern | Infrequent, all-or-nothing | Generally smaller and more frequent; timing depends on the payout method and payment rules |
| Block-finding variance | Borne by the individual miner | Shared among participants under PPLNS; borne by the operator for the PPS component |
| Share accounting | Not required to divide rewards among miners; a hosted service may use shares for monitoring | Used by the pool to measure contributed work |
| Fees | No conventional pool fee if fully self-operated; a hosted solo service may charge its own fee | Pool fee applies, varying by payout method |
| Block-template control | Can be fully controlled by the miner if running its own node; hosted setups depend on the service | Typically managed by the pool; miner-selected templates require a supporting setup |
| Main operational concern | Long stretches without rewards; node and propagation reliability for self-operated setups, or service reliability for hosted setups | Pool reliability, fee schedule, payout method, and share-rejection rate |
Why payout variance is the main difference
The practical gap between solo and pool mining becomes clearer with a probability illustration rather than a flat profitability comparison. For the difficulty period beginning at block 969696 on October 3, 2026, Bitcoin's network difficulty was approximately 132.7 trillion, according to mempool.space's mining data. The expected time for a miner operating at 200 TH/s to find a block while mining entirely alone can be estimated as:
Expected time (seconds) ≈ (Difficulty × 2^32) ÷ Hashrate (hashes per second)
At 200 TH/s, or 200 × 10^12 hashes per second, this works out to roughly 2.85 billion seconds, or approximately 90 years. This calculation assumes constant difficulty, constant hashrate, and continuous operation. It is a statistical expectation, not a countdown: the same miner could find a block far sooner, much later, or not at all during its operating life. The estimate changes as network difficulty adjusts every 2,016 blocks.
Solo mining at modest hashpower therefore produces extremely uneven results. Pool mining reduces a participant's payout variance through reward sharing under PPLNS or transfers block-finding variance to the operator for PPS-based payments. Neither mechanism makes the miner's hardware more likely to find a block.
Pool mining is not the same as PPS+ or PPLNS
Choosing pool mining over solo mining determines whether to receive rewards only from blocks found by your own hardware or to be paid through a pool's share-based system. It does not determine the payment mechanism or who bears block-finding variance. ViaBTC currently supports two payout methods, PPS+ and PPLNS, with PPS+ set as the default (ViaBTC pricing page, checked October 8, 2026).
Under PPS+, the subsidy component is paid according to PPS accounting based on valid shares submitted, independently of the pool's actual block-finding results. The transaction-fee component is distributed under PPLNS rules and depends on blocks the pool actually finds. Under PPLNS, both the subsidy and transaction fees are allocated based on a miner's proportional contribution within the pool's recent share window when a block is found.
ViaBTC applies separate fees to the subsidy and transaction-fee components under PPS+, while PPLNS has its own fee rate. These are charges on different components, not percentages to add into one flat charge on total rewards. Fee levels and settlement conditions can change, so check the ViaBTC fee schedule and the PPS+/PPLNS explainer before relying on specific figures.
Neither payout method changes an ASIC's physical hashrate or Bitcoin's network difficulty. They determine how miners are paid and how block-finding variance is allocated between participants and the pool operator.
What to review before choosing an approach
The choice between solo and pool mining depends on factors specific to each operation rather than a universal rule. Relevant considerations include:
- Hashpower: Your hashrate and the network difficulty determine the expected waiting time for a solo block.
- Payout variability: Consider whether you can tolerate long periods without rewards or need more regular earnings.
- Operating costs: Electricity and hosting costs accrue regardless of whether you find a block.
- Fees and payout method: Review the fees, reward components, and whether payments depend on actual pool blocks or PPS accounting.
- Connection reliability: Uptime and share-rejection rates affect how much work is credited. For self-operated solo mining, node and block-propagation reliability also matter.
- Block-template control: Check what the specific pool or hosted service allows; choosing a reward model alone does not establish who selects transactions.
Conclusion
Solo mining and pool mining represent different ways of allocating Bitcoin's mining rewards and variance. Solo mining leaves the chance of earning a block reward entirely with the individual miner, with any hosted service fee deducted from successful rewards. Pool mining uses share-based accounting: PPLNS shares actual block rewards and their variability among participants, while PPS-based payments transfer block-finding variance to the operator for the relevant component.
Understanding this distinction — and recognizing that PPS+ and PPLNS are a separate layer within pool mining — is the necessary first step before evaluating any specific pool's fee schedule or payout terms.
Frequently asked questions
Can a small miner realistically succeed at solo mining?
Yes, but success is probabilistic rather than predictable. At typical individual hashpower levels relative to network difficulty, the statistically expected time to find a block can run into decades, even though a block could in principle be found much sooner.
Does joining a pool guarantee more stable income than solo mining?
No. Pool mining generally reduces payout variance, but the mechanism matters: PPLNS earnings still depend on actual pool blocks, while the PPS component is paid based on valid shares regardless of pool luck. Realized earnings and withdrawal timing still depend on fees, the chosen payout method, uptime, share-rejection rates, and payment rules.
Are PPS+ and PPLNS types of solo mining?
No. PPS+ and PPLNS are payout methods used within pool mining. Solo mining pays a miner only when its own hardware finds a block, less any applicable hosted service fee. A hosted solo service may track shares for monitoring, but it does not use them to share block rewards among miners.
Does mining through a pool mean giving up control over block templates?
Not necessarily in every setup, but in most conventional pool arrangements the pool manages block-template construction. Stratum V2's optional Job Declaration Protocol enables miners to declare their own templates in supporting configurations. Check the specific pool and software setup rather than assuming this capability is available.