Bitcoin Mining in 2026: How to Calculate Your Break-Even

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Bitcoin mining in 2026 is no longer a sure thing – but it’s far from a dead business, either. Whether a miner pays off comes down to a single number: your break-even. Calculate that point properly before you buy, and you’ll know exactly at which bitcoin price, network difficulty, and power rate you turn a profit. Skip the math, and you’ve bought an expensive space heater. This guide walks through the calculation step by step – with real numbers from the summer of 2026.

The four variables that decide everything

Every break-even calculation in bitcoin mining rests on four inputs:

1. Your hardware’s hashrate. Modern ASIC miners like the Antminer S21 XP deliver around 270 terahashes per second (TH/s); mid-range units like the Whatsminer M60S+ come in near 206 TH/s. More hashrate means a bigger share of the block rewards paid out across the network every day.

2. Efficiency in joules per terahash. This determines what your hashrate costs in electricity. An S21 XP runs at about 13.5 J/TH; older units like the Antminer S19 sit above 30 J/TH. At identical hashrate, the S19 owner pays more than twice as much for power.

3. Your electricity rate. By far the most important variable. German household power runs about €0.30/kWh (roughly $0.33), the US residential average about $0.17 – while industrial power in professional mining data centers starts around €0.062/kWh (about $0.07). That’s nearly a factor of five between the extremes, and in most cases this factor alone decides between profit and loss.

4. The hashprice. This is the market value of one petahash of computing power per day – currently (July 2026) about $29 to $33 per PH/s per day. Hashprice bundles the bitcoin price, network difficulty, and transaction fees into a single metric, and it moves daily.

The calculation, step by step

Let’s take an Antminer S21 XP as our example: 270 TH/s, 13.5 J/TH, purchase price around €3,700 (roughly $4,100).

Step 1: Calculate power draw. 270 TH/s × 13.5 J/TH = 3,645 watts of continuous load. Over 24 hours, that’s about 87.5 kWh per day.

Step 2: Daily electricity costs. At €0.30/kWh (German household rate): 87.5 × 0.30 = €26.25 per day. At €0.062/kWh (hosted in a data center): 87.5 × 0.062 = €5.43 per day.

Step 3: Daily revenue. 270 TH/s equals 0.27 PH/s. At a hashprice of $30/PH/day, that’s about $8.10 – roughly €7.30 per day (before pool fees, typically 1–2 %).

Step 4: Draw the break-even line. At home: €7.30 in revenue minus €26.25 in power = −€18.95 per day. A guaranteed loss, no matter how long you wait. In the data center: €7.30 minus €5.43 = +€1.87 per day in contribution margin – plus the option that rising prices or falling difficulty multiply that margin.

The core takeaway: the same miner is a total loss at one location and profitable at another. It’s not the hardware that decides – it’s the power rate.

Break-even power price: the most important number before you buy

Instead of asking “Is mining worth it?”, ask: At what power rate is my miner worth it? The formula:

Break-even power price = daily revenue ÷ daily consumption in kWh

For the S21 XP: €7.30 ÷ 87.5 kWh ≈ €0.083/kWh (about $0.09). Anything below that is profitable; anything above is a loss. An older S19 at ~34 J/TH only reaches a break-even power price of about €0.04/kWh – which is exactly why those machines are disappearing from the network.

This one number makes hardware comparisons radically simple: the lower the efficiency figure (J/TH), the higher the power rate you can afford – and the longer your machine stays profitable through the next difficulty increase or the 2028 halving.

Payback: when is the hardware paid off?

The second look goes to the purchase price. At €1.87 of daily surplus, paying off a €3,700 machine takes over five years on paper – sounds long. But that static math omits two things. First, all the figures in this article come from the current bear market: bitcoin trades roughly 50 % below its cycle high of about $126,000 (October 2025) – we’re deliberately calculating with numbers from the bottom of the cycle. In a bullish recovery toward that high, hashprice roughly doubles: €1.87 of daily surplus in the data center becomes more than €9, and the payback period shrinks from five-plus years to a little over one. Second, you’re producing bitcoin at cost: whoever holds the mined BTC instead of selling immediately is effectively dollar-cost averaging at a discount. That’s why many miners don’t calculate in euro payback at all, but in “satoshi production cost per day” – and compare that with the exchange price.

One thing an honest calculation must include: difficulty rises over time. The bitcoin network sits at around 963 EH/s of total hashrate in July 2026, with difficulty near 125 trillion – historically, that number grows with every new hardware generation. Budget conservatively for a 3–5 % revenue decline per quarter if the price moves sideways.

Use a calculator instead of fighting spreadsheets

If you’d rather not run this math by hand, there’s a free bitcoin mining calculator at minenity.com/en/bitcoin-mining-calculator that comes preloaded with the current BTC price, network difficulty, and the common ASIC models – including a side-by-side comparison of household power versus hosted data-center rates. It takes less than a minute to check whether a specific machine runs profitably at your power rate and where your personal break-even sits.

Three mistakes beginners make in the calculation

Mistake #1: Projecting today’s revenue three years forward. Difficulty growth and the 2028 halving (block reward drops from 3.125 to 1.5625 BTC) belong in every serious forecast. Whoever calculates on thin margins today is underwater after the halving.

Mistake #2: Forgetting the side costs. At home, add noise (70–80 dB), around 3,000 watts of waste heat, possibly a new electrical circuit, and your own maintenance time. With hosting, cooling, monitoring, and maintenance are bundled into the kWh rate – providers like Minenity, the Berlin-based mining brand of 21 Strategy GmbH, combine industrial power from €0.062/kWh in US and Asian data centers with maintenance and 24/7 monitoring under a German-law contract. Both cost realities belong in a fair comparison.

Mistake #3: Ignoring resale value. Efficient hardware holds residual value. A break-even that factors in the resale price after two years looks considerably more realistic than depreciating to zero.

Bottom line

Bitcoin mining in 2026 is a numbers game with four variables – and the power rate dominates all the others. Below €0.08/kWh, current hardware is profitable; at German or average US household rates, it never is. Whoever calculates their target machine’s break-even power price before buying, projects difficulty conservatively, and plans for the 2028 halving makes an informed decision instead of a bet. The tools are free – there’s no excuse left for buying without doing the math.

FAQ: Break-even in bitcoin mining

How often should I recalculate my break-even? A quick check after every difficulty adjustment (every two weeks), a thorough one monthly. If you’re hosted, also rerun the numbers whenever your provider’s power rate changes.

Does the purchase price count toward the daily break-even? No – the daily break-even compares ongoing revenue with ongoing costs only. The purchase belongs in a separate payback calculation. A machine can run profitably every day and still pay itself off slower than planned.

What’s the most common break-even mistake? The power rate: many people calculate with a base rate that excludes taxes and fees, or with a hosting rate that hides service surcharges. Always use the true all-in price per kilowatt-hour.