You've got your miner running, the hashrate is steady, and sats are trickling into your pool wallet. Now the question that every home miner eventually wrestles with: do you hold everything your miner produces, or do you sell daily to lock in AUD and cover your electricity costs?
There's no universally correct answer — it depends on your electricity rate, your risk tolerance, and what Bitcoin does over the period you're mining. But we can model both strategies using realistic numbers and see how they've played out historically, so you can make an informed decision rather than going on gut feel.
The Two Strategies
Strategy A — Stack Everything: You hold 100% of your mined BTC. You pay electricity out of pocket from your regular income. You don't sell a single sat. Your bet is that Bitcoin's price appreciation over time will more than compensate for the electricity you're spending now.
Strategy B — Sell Daily: Each day (or each pool payout cycle), you sell enough BTC to cover that day's electricity cost. You keep any leftover sats. Your bet is that locking in guaranteed cost recovery is more important than maximising potential upside.
Both strategies assume the same miner, the same hashrate, the same electricity rate, and the same pool. The only variable is what you do with the coins once they land in your wallet.
The Setup We're Modelling
To keep this grounded in reality for Australian home miners, here's our baseline scenario:
- Miner: Bitmain Antminer S21 running at 151 TH/s drawing 2,643W at the wall
- Electricity rate: $0.30/kWh — a realistic residential tariff in Perth, Sydney, or Brisbane (see our state-by-state rate comparison for where you sit)
- Daily power cost: 2.643 kW × 24 hours × $0.30 = approximately $19.03 AUD per day
- Pool: FPPS payout model, 1% pool fee
- Time period: 6 months (183 days)
- Total electricity cost over 6 months: ~$3,482 AUD
We're deliberately not adjusting for difficulty changes on a day-by-day basis in this simplified model. In practice, rising network difficulty reduces your daily BTC earnings over time, which affects both strategies equally. The comparison between the two approaches holds regardless.
How Strategy A (Stack Everything) Works in Practice
Under this approach, every satoshi your miner earns stays in your wallet. You pay the electricity bill from your bank account — roughly $570 per month or $3,482 over the six-month period.
The appeal is straightforward: if BTC goes up over that period, the coins you mined early on are now worth more than what you would have received by selling them at the time. You've effectively been dollar-cost averaging into Bitcoin via your electricity bill, acquiring sats at a blended cost basis that may be lower than the market price at the end of the period.
The risk is equally straightforward: if BTC drops or stays flat, you've spent $3,482 on electricity and you're holding coins worth less than that. You're underwater until the price recovers — and there's no guarantee on timing.
Who this suits
Stackers tend to be long-term Bitcoin believers who view mining as a cheaper way to acquire BTC than buying on an exchange. They have enough disposable income to absorb the electricity cost without stress. They're not mining to pay bills — they're mining to accumulate. If that's your mindset, this strategy aligns with it. Just be honest about your financial runway. If a bear market hits and your coins drop 40% in value while you're still paying $19 a day in power, can you sustain that for months without panic-selling at the bottom?
How Strategy B (Sell Daily) Works in Practice
Each day, you sell just enough BTC to cover that day's electricity cost ($19.03 AUD). Any remaining sats stay in your wallet. If your miner earns $25 worth of BTC in a day, you sell $19.03 and keep the remaining $5.97 in sats. If your miner earns only $15, you sell all of it and cover the $4.03 shortfall from your own pocket.
This approach treats mining as a self-funding operation. On profitable days, it generates free sats. On unprofitable days, it minimises the bleed. Over time, you accumulate a smaller BTC stack than Strategy A, but you've also spent far less out of pocket.
Selling daily in Australia is straightforward through Australian exchanges like CoinSpot, Swyftx, or Independent Reserve. Transaction fees on small daily sells eat into your margin though — typically 0.1% to 1% depending on the platform and volume tier. Factor that in.
Who this suits
Daily sellers tend to be pragmatic operators who want mining to be cash-flow neutral or positive. They may not have strong conviction on Bitcoin's price direction, or they simply don't want to tie up capital. This is also the smarter approach if your electricity costs are high relative to your mining revenue — if you're operating on thin margins at $0.35/kWh, letting costs compound for months while holding coins is a recipe for stress.
The 6-Month Comparison
Here's where it gets interesting. The outcome depends almost entirely on what BTC/AUD does during the period. Let's model three scenarios:
Scenario 1: BTC rises 30% over 6 months
Strategy A wins convincingly. The sats you mined in month one are now worth 30% more. Your total electricity spend was $3,482, but your accumulated BTC stack is worth significantly more than that, plus you captured the full upside on every sat. Strategy B, by contrast, sold a portion of those early (cheap) sats to cover power costs, locking in a lower average price. You still accumulated some sats, but fewer — and you missed the compounding effect of holding through the rally.
Scenario 2: BTC drops 20% over 6 months
Strategy B wins clearly. You've been selling daily, recovering most of your electricity costs in real-time at higher prices. Your out-of-pocket expense is modest. Strategy A holders have spent $3,482 on electricity and are sitting on a BTC stack that's now worth 20% less than what they mined it at. They need a recovery just to break even. The bull market trap article covers this dynamic in detail — buying hardware (or holding coins) when sentiment is peak bullish often leads to pain.
Scenario 3: BTC chops sideways (±5%)
Roughly a draw, with a slight edge to Strategy B. In a flat market, stacking delivers no price appreciation to compensate for the electricity cost. You've spent $3,482 and your BTC is worth about the same as when you mined it. Strategy B has been recovering costs in real-time, and you've accumulated a small stack of free sats from the margin above electricity costs. The daily sell fees erode some of that advantage, but the cash-flow certainty is worth something.
A Third Option: The Hybrid Approach
Most experienced miners don't rigidly follow either pure strategy. Instead, they run a hybrid: sell enough to cover costs (electricity, internet, any loan repayments on the hardware), and stack the rest. This gives you the cash-flow stability of daily selling with the upside exposure of stacking.
Some miners take this further by adjusting their sell ratio based on market conditions. When BTC is in a clear uptrend, they sell less and stack more. When momentum fades or a downtrend begins, they sell more aggressively and preserve capital. This requires paying attention to the market, but you don't need to be a trader — just aware of the general trend.
Our guide on when to sell your mined Bitcoin covers the indicators worth watching, from on-chain metrics to simple moving averages that can inform your sell timing without over-complicating things.
Tax Implications in Australia
Whichever strategy you choose, the ATO treats your mined coins as assessable income at the market value on the day you receive them — not the day you sell. This means stacking doesn't defer your tax obligation. You owe income tax on the AUD value of every sat the day it hits your wallet, whether you sell it or not.
If you hold coins for more than 12 months and then sell at a profit, you may qualify for the 50% CGT discount on the capital gain (the difference between the value at mining and the value at sale). If you sell within 12 months, any gain is taxed at your marginal rate with no discount.
Strategy B creates more frequent disposal events (daily sells), which means more transaction records to track. Strategy A is simpler from a record-keeping perspective — you just need the daily AUD value at the time of receipt. Either way, you need good records. Our ATO crypto mining tax guide and hardware depreciation guide cover the full picture, including how to claim your miner's cost as a deductible expense.
The Variable That Matters Most: Your Electricity Rate
Your electricity rate determines how tight your margins are, which directly affects how much risk you can afford to take with Strategy A.
At $0.20/kWh (achievable with solar, off-peak TOU plans, or cheaper retail plans), your daily cost drops to ~$12.69. Your margin per day is wider, meaning even moderate BTC price drops don't put you underwater. Stacking is less risky because your cost basis per sat is lower.
At $0.35/kWh (common on default residential tariffs in SA, parts of NSW, and QLD), your daily cost jumps to ~$22.20. Your margin is razor-thin or negative on bad days. Stacking through a downturn at this rate can get expensive fast. Daily selling to recover costs makes a lot more sense at these rates.
If you haven't optimised your power costs yet, that's the single highest-leverage thing you can do before worrying about sell strategy. Check time-of-use plans ranked for miners, explore solar pairing, or consider whether off-grid mining could work for your setup. Lowering your electricity rate from $0.35 to $0.22 has the same effect on profitability as a 35% increase in BTC price — except it's entirely within your control.
Which Strategy Should You Choose?
There's no single right answer, but here's a practical framework:
Lean toward stacking if: you have a low electricity rate (under $0.25/kWh), you have disposable income to cover months of power costs without stress, you're long-term bullish on BTC, and you don't need the mining revenue for living expenses.
Lean toward daily selling if: you're on a high electricity rate (above $0.30/kWh), your margins are tight, you want mining to be self-funding, or you're not confident in BTC's short-term price direction.
Run a hybrid if: you want the best of both — cost recovery plus upside exposure. This is what most experienced Australian miners do, and it's the most flexible approach across different market conditions.
Whatever you choose, the most important thing is to actually choose — and track your results. Running your miner without a defined strategy for what you do with the coins is how people end up holding through a crash and then panic-selling at the worst possible time. Pick a plan, run it for a defined period, review the numbers, and adjust. That's how mining stays profitable long-term, regardless of which direction BTC goes next.
If you're still setting up your first miner, our beginner setup guide walks you through the full process. And if you're shopping for a unit that gives you the best margin at Australian electricity rates, check our 2026 Bitcoin miner buyer's guide or browse the full Bitcoin miner collection.
