A break-even price helps a Bitcoin miner assess whether mining earnings cover a defined set of costs. It can inform decisions about running a machine or investing in equipment, but its meaning depends on which costs are included. There is no single break-even Bitcoin price that applies to every miner.
What Is a Break-even Price in Mining?
A mining break-even price is the Bitcoin price at which the value of the BTC a miner earns equals the costs included in the calculation over the same period. It changes with electricity rates, ASIC efficiency, network difficulty, pool fees, and the scope of costs included.
The same machine can have different break-even prices:
- Electricity break-even price — earnings cover electricity costs only.
- Operating break-even price — earnings cover electricity and other recurring costs, such as hosting, cooling, repairs, and labor.
- Full-cost break-even price — earnings also cover an allocated share of hardware and other capital costs.
Pool fees must be accounted for once. If the BTC earnings figure is already net of pool fees, do not add those fees to costs again.
An electricity-only figure shows whether earnings cover power costs. It does not show whether the machine has recovered its purchase price or whether the overall operation is profitable.
The General Break-even Formula
Break-even BTC price (USD/BTC) = Costs during the period (USD) ÷ BTC earned during the same period
Both inputs must cover the same period: daily costs against daily BTC earnings, monthly costs against monthly BTC earnings, and so on. A daily average calculated from a week of earnings can be compared with daily costs, but the week's total BTC cannot.
For a forward-looking calculation, use expected costs and expected BTC earnings. For a completed period, use actual costs and net mining earnings attributable to that period.
Calculating Electricity Cost
Daily electricity cost = Daily electricity use (kWh) × Electricity rate (USD/kWh)
For an ASIC operating continuously for 24 hours, with hashrate expressed in TH/s and efficiency in J/TH:
Daily electricity use (kWh) = Hashrate (TH/s) × Efficiency (J/TH) × 0.024
Hashrate multiplied by efficiency gives power in watts. The factor 0.024 converts watts into kilowatt-hours over 24 hours: 24 ÷ 1,000.
Manufacturer specifications provide an estimate. Actual power draw can differ with operating conditions and settings. For a completed period, metered electricity use provides a better basis. Include separately powered cooling or other equipment if those electricity costs fall within the calculation's scope.
If the machine operates for fewer than 24 hours, adjust electricity use for actual operating hours and any power consumed while idle.
Estimating Expected BTC Earnings
At the Bitcoin network level, mining rewards consist of the block subsidy and transaction fees. A pool's payment method determines how a participating miner earns a share of mining revenue.
For a simplified model that includes only the block subsidy and excludes transaction fees, pool fees, downtime, and rejected shares:
Expected BTC/day ≈ (H × 86,400) ÷ (D × 2³²) × Block subsidy
Here, H is hashrate in hashes per second and D is Bitcoin network difficulty. The model assumes constant hashrate and difficulty over the day. Bitcoin adjusts difficulty every 2,016 blocks, roughly every two weeks, to keep the average block interval near 10 minutes. The block subsidy has been 3.125 BTC since the April 2024 halving. Bitcoin.org
This is a theoretical expectation, not a prediction of a miner's daily pool earnings. Transaction-fee income and the pool's payment method can affect the amount earned, while pool fees reduce net earnings.
For a completed period, use the pool's recorded net mining earnings attributable to that period where available. A transfer to an external wallet is not the same as earnings for that period: it may include an accumulated balance. Account for material settlement delays that shift credits across period boundaries, and match the reporting timezone to the cost period.
Worked Example: Electricity-Only Break-even Price
This example uses illustrative inputs. It is not a forecast of future mining economics.
| Input | Value |
|---|---|
| ASIC hashrate | 270 TH/s |
| ASIC efficiency | 13.5 J/TH |
| Electricity rate | $0.06/kWh |
| Assumed network difficulty | 127,450,789,715,843.1 |
| Block subsidy | 3.125 BTC |
| Uptime | 100% |
| Transaction fees, pool fees | Excluded |
Step 1 — Daily electricity use
270 × 13.5 × 0.024 = 87.48 kWh/day
Step 2 — Daily electricity cost
87.48 × $0.06 = $5.2488/day, or approximately $5.25/day
Step 3 — Expected daily BTC from the block subsidy
(270 × 10¹² × 86,400) ÷ (127,450,789,715,843.1 × 2³²) × 3.125 ≈ 0.0001331757 BTC/day
Step 4 — Electricity break-even price
$5.2488 ÷ 0.0001331757 ≈ $39,400 per BTC
Under these assumptions, the machine's electricity-only break-even price is approximately $39,400 per BTC. This excludes transaction-fee income, pool fees, downtime, rejected shares, hosting charges, repairs, and hardware costs. It is a simplified theoretical estimate, not an actual pool payout forecast.
What Can Make Actual Results Differ?
All else equal, higher electricity rates, worse ASIC efficiency (higher J/TH), higher network difficulty, and a lower block subsidy raise the estimated electricity break-even price. Lower electricity rates, better efficiency, and lower difficulty reduce it.
Transaction-fee income increases BTC earnings when included, lowering the break-even price. Pool fees reduce net earnings, raising it. Rejected or stale shares can also raise break-even when electricity is consumed but the work does not earn rewards under the pool's rules.
Uptime needs a separate qualification. If downtime reduces electricity use and BTC earnings in the same proportion, electricity-only break-even stays unchanged. Downtime raises break-even when costs continue while earnings fall—for example, fixed hosting charges or power consumed without productive hashing. Higher uptime can spread those continuing costs across more BTC earned.
Avoid applying adjustments twice. Net earnings recorded by a pool already reflect deducted pool fees and actual mining activity. Do not reduce those earnings again for the same fees or downtime. When starting from a theoretical gross estimate, apply each adjustment once and make consistent assumptions about electricity use.
Pool payment methods also affect settlement timing and short-term earnings variability. ViaBTC supports PPS+ and PPLNS for Bitcoin. Under PPS+, the block-subsidy portion follows PPS logic, while transaction fees follow PPLNS logic. Under PPLNS, earnings depend on the pool's actual block discovery and the miner's contribution within the applicable share window. ViaBTC Support
These methods do not change the break-even equation, but they affect the BTC earnings used in it. For a retrospective comparison against a power bill, use net earnings attributable to the corresponding mining period and account for material settlement timing differences.
Electricity Break-even vs. Full Profitability
Electricity break-even helps assess whether mining earnings cover power costs. For a short-term run-or-shutdown decision, compare expected revenue with the costs avoided by stopping. Electricity may be the main avoidable cost, but other usage-based charges can matter too. Costs that continue whether the machine runs or stops should not determine that comparison.
A full-cost calculation asks a broader question: does the value of mining earnings cover operating costs and an allocated share of capital costs?
Full-cost break-even BTC price = (Operating costs + Allocated capital costs) ÷ Net BTC earned for the same period
Operating costs may include electricity, hosting, labor, repairs, and other recurring expenses. Count each cost once: if hosting includes electricity, do not add the same electricity cost separately. Likewise, do not add pool fees already deducted from net BTC earnings.
Allocated capital costs may include hardware depreciation and an appropriate allocation of other capital assets. Do not count both the full hardware purchase price and depreciation for that same hardware in the same cost model.
The result depends on the chosen accounting assumptions and cost scope. Hardware useful life, financing costs, and site overhead can change the figure. A period's full-cost break-even therefore does not, by itself, establish that the original investment has been repaid.
Conclusion
A mining break-even price is the BTC price needed to cover a defined set of costs with the BTC earned over the same period. Its usefulness depends on a clear cost scope, consistent treatment of fees, and matched measurement periods.
It is not a Bitcoin price floor or a prediction of market prices. Recalculate it as difficulty, electricity rates, operating conditions, and mining earnings change.
FAQ
Is a break-even price the same as a Bitcoin price floor?
No. It reflects a particular miner's costs and BTC earnings. Bitcoin's market price can remain above or below that threshold; mining costs do not establish a guaranteed market price floor.
Does a break-even price below the current BTC price guarantee profit?
No. It indicates that the BTC's value at that price exceeds the costs included in the calculation. Other costs may be excluded, actual earnings may fall below expectations, and inputs can change. If the BTC is sold, realized proceeds also depend on the sale price and selling costs.
Should I use estimated earnings or actual pool earnings?
Use estimated earnings for forward-looking scenarios. For a completed period, use recorded net mining earnings attributable to that period, accounting for material settlement delays. Wallet transfers may include earnings from other periods and should not automatically be treated as that period's mining output.
Does the break-even calculation change after a Bitcoin halving?
The formula stays the same, but the block subsidy falls. All else equal, this reduces expected BTC earnings and raises break-even. In the subsidy-only model, halving the subsidy doubles break-even if costs, hashrate, and difficulty stay unchanged. When transaction-fee income is included, the total earnings effect depends on its contribution.
Can two miners with identical hardware have different break-even prices?
Yes. Electricity rates, hosting terms, pool fees, and other costs can differ. Uptime also matters when costs continue during downtime, even though proportional reductions in electricity use and earnings leave electricity-only break-even unchanged.
References
- Bitcoin.org, Bitcoin Halving Countdown
- ViaBTC Support, How are profits calculated?