What is the ROI on a Monero mining rig?
Your return on investment (ROI) on a Monero mining rig is the profit you earn compared with what you spent on the rig. There is no fixed percentage: your result depends on your hardware cost, electricity bill, mining income, and how long you run it. A rig can earn XMR every day and still never pay for itself.
Calculate your return, not just your earnings
Start with the full cost of getting your rig running. Include the processor, motherboard, memory, power supply, storage, cooling, and any taxes or shipping.
Then calculate what you keep after running costs:
- Daily operating profit = daily mining revenue − daily running costs
- Annual operating ROI = annual operating profit ÷ upfront rig cost × 100
- Simple payback time = upfront rig cost ÷ daily operating profit
Mining revenue is the value of the XMR you earn before costs. Running costs include electricity, pool fees, cooling, and repairs. A mining pool combines your computing work with other miners’ work and shares rewards.
Annual operating ROI measures your yearly return before recovering the purchase price. To calculate your total investment result when you stop mining, subtract the rig’s purchase price from your accumulated operating profit, then add any resale proceeds.
If daily operating profit is zero or negative, there is no payback under those conditions.
See what a realistic calculation looks like
Here is an illustration, not a current earnings estimate.
Suppose your rig costs $800, uses 150 watts at the wall, and earns $0.70 per day after pool fees. Your electricity costs $0.15 per kilowatt-hour (kWh), the unit on your power bill.
- Daily electricity use: 0.150 kW × 24 hours = 3.6 kWh
- Daily electricity cost: 3.6 × $0.15 = $0.54
- Daily operating profit: $0.70 − $0.54 = $0.16
- Annual operating profit: $0.16 × 365 = $58.40
- Annual operating ROI: $58.40 ÷ $800 × 100 = 7.3%
- Simple payback: $800 ÷ $0.16 = 5,000 days, or about 13.7 years
That already-long payback excludes repairs, downtime, extra cooling, and taxes. It also assumes mining conditions stay unchanged for years, which is not a reliable assumption.
Use measurements that match your rig
Monero uses RandomX, a mining algorithm designed to favor CPUs—the main processors in ordinary computers. An expensive graphics card does not automatically improve your Monero return.
Before buying hardware, check:
- Measured hashrate: how many mining calculations the exact setup performs per second.
- Wall power: electricity used by the whole machine, not just the CPU.
- Your electricity tariff: including applicable usage charges.
- Current mining conditions: use a live calculator and check its fee assumptions.
If you plan to mine through a browser, measure that browser setup. Do not use results from dedicated mining software as though they were interchangeable. Browser limitations and service fees can make your return much lower.
The bottom line
Judge a Monero rig by its net profit and payback time, not its daily XMR rewards. Test lower mining income, higher electricity costs, and downtime before committing money. Treat resale value cautiously, check local tax rules, and avoid anyone promising a guaranteed ROI.
