Crypto Mining Tax Calculator 2026 β Business vs Hobby, Section 179
Calculate federal income tax and self-employment tax on crypto mining income. Deduct equipment (Section 179), electricity, and internet. Determine hobby vs business tax impact.
$
Total fair market value of coins when mined $
Hardware purchased this year β 100% deductible via Section 179 if business $
Only the electricity used for mining $
Pool fees, internet, software, repairs $
W-2 salary, other business income $0
Total Tax on Mining
$0
Federal Income Tax on Mining
$0
Self-Employment Tax
$0
Net Mining Profit (after expenses)
Mining Tax Breakdown
Crypto Mining Tax Guide 2026
Crypto mining creates two tax events: (1) when you receive mined coins (ordinary income = FMV), and (2) when you sell those coins (capital gain/loss). This calculator focuses on the first event β the income tax and self-employment tax owed when mining.
Business Mining Formula
Gross Mining Revenue = FMV of all coins at time of receipt
Equipment Deduction = Section 179 (100% in year 1, up to $1,160,000 limit)
Net Mining Income = Revenue β Equipment β Electricity β Other Expenses
SE Tax = Net Mining Income Γ 92.35% Γ 15.3% (up to SS wage base)
SE Tax Deduction = SE Tax / 2 (deducted from AGI)
Taxable Mining Income = Net Mining Income β (SE Tax / 2)
Federal Income Tax = Marginal rate Γ Taxable Mining Income (stacked on other income)
Equipment Deduction = Section 179 (100% in year 1, up to $1,160,000 limit)
Net Mining Income = Revenue β Equipment β Electricity β Other Expenses
SE Tax = Net Mining Income Γ 92.35% Γ 15.3% (up to SS wage base)
SE Tax Deduction = SE Tax / 2 (deducted from AGI)
Taxable Mining Income = Net Mining Income β (SE Tax / 2)
Federal Income Tax = Marginal rate Γ Taxable Mining Income (stacked on other income)
Section 179 Deduction for Mining Equipment
Example: $8,000 GPU rig, $45,000 revenue, $65,000 other income:
Section 179: $8,000 deducted in full year 1 (vs depreciated over 5 years without 179)
Net mining income: $45,000 β $8,000 β $6,000 β $1,200 = $29,800
SE tax (92.35% Γ $29,800 Γ 15.3%): approx. $4,212
SE deduction: $2,106 | Taxable mining: $27,694 | Federal (22% bracket): $6,093
Total mining tax: $10,305 | Effective rate on revenue: 22.9%
Section 179: $8,000 deducted in full year 1 (vs depreciated over 5 years without 179)
Net mining income: $45,000 β $8,000 β $6,000 β $1,200 = $29,800
SE tax (92.35% Γ $29,800 Γ 15.3%): approx. $4,212
SE deduction: $2,106 | Taxable mining: $27,694 | Federal (22% bracket): $6,093
Total mining tax: $10,305 | Effective rate on revenue: 22.9%
Extended
Hobby vs Business Profitability Analysis
Side-by-side comparison of hobby mining vs business mining taxes, plus break-even analysis on equipment deductions
Business vs hobby classification dramatically changes your tax. See the side-by-side and the profitability threshold where Section 179 pays off.
| Tax Item | Business (Schedule C) | Hobby | Business Advantage |
|---|
Hobby vs Business Determination Checklist
| IRS Factor | Points to Business | Points to Hobby |
|---|---|---|
| Operate in businesslike manner (books, records) | Separate bank account, profit/loss tracking | No formal records kept |
| Time and effort devoted | Regular, daily monitoring and optimization | Occasional, passive setup |
| Expertise | Research, optimization, industry knowledge | No special knowledge applied |
| Profit history | Profitable 3 of last 5 years (safe harbor) | Consistently losing money |
| Depend on income | Mining as primary or significant income | Side activity, don't need income |
| Success in similar activities | Prior profitable mining or crypto activity | No track record |
| History of losses | Losses from start-up, unusual events | Continuous unexplained losses |
| Amount of occasional profits | Large profits relative to losses | Small profits relative to investment |
| Personal pleasure element | Mining is not a hobby you'd do unpaid | You mine regardless of profit |
Frequently Asked Questions
How is crypto mining income taxed by the IRS?
The IRS taxes crypto mining income as ordinary income at the fair market value (FMV) of the coins when received. This applies whether you mine Bitcoin, Ethereum, or any other cryptocurrency. The FMV at receipt becomes your cost basis. If you later sell the mined coins, any gain above the FMV at mining is a capital gain (long-term if held 12+ months, short-term otherwise). This creates two taxable events: receipt (ordinary income) and later sale (capital gain).
What is self-employment tax for crypto miners?
If mining is conducted as a trade or business (Schedule C), you owe self-employment tax of 15.3% on net earnings up to the Social Security wage base ($184,500 in 2026), and 2.9% above that. SE tax is calculated on 92.35% of net earnings (you deduct half your SE tax from income). You can deduct the full employer half of SE tax from gross income. If mining is a hobby, no SE tax applies but deductions are also limited.
What mining expenses are deductible?
If mining is a trade or business, you can deduct on Schedule C: (1) Mining equipment β you can use Section 179 to deduct 100% in year 1 (2026 limit: $1,160,000); (2) Electricity costs β your actual electricity bill for mining; (3) Internet and data costs; (4) Dedicated space rental or home office deduction; (5) Mining pool fees; (6) Equipment repairs and maintenance; (7) Software and monitoring tools. Hobby miners can only deduct expenses up to their mining income, and only as itemized deductions above 2% AGI floor β effectively making deductions useless for most.
How do I determine if mining is a business or hobby?
The IRS uses the "profit motive" test with 9 factors: (1) Time and effort devoted; (2) Expertise of taxpayer; (3) Whether you depend on income from it; (4) History of profit/loss; (5) Profit in similar activities; (6) Success in similar activities; (7) Elements of personal pleasure; (8) History of income/losses; (9) Amount of occasional profit. The safe harbor is profit in 3 of 5 consecutive years. Keeping detailed records, operating in a businesslike manner, and consulting a tax professional all support business classification.
Should I hold or immediately sell mined crypto for tax purposes?
Holding mined coins for 12+ months before selling converts the subsequent gain from ordinary income rates (up to 37%) to long-term capital gains rates (0%, 15%, or 20%). However, you already owe ordinary income tax on the FMV when mined. If the coin price falls after mining, you'll have locked in a high ordinary income tax basis but may face a capital loss on the sale (limited to $3,000/year). The optimal strategy depends on your tax bracket, expected price movement, and cash flow needs.