Every Bitcoin mining operation sits on depreciating assets. ASIC miners lose value from the moment they arrive on site — but how you depreciate them on your books, and when you choose to sell or upgrade, can swing annual tax liability by tens of thousands of dollars. This guide breaks down the two primary depreciation methods available to U.S. mining operators, shows how to calculate optimal resale timing, and explains why fleet refresh strategy is as important as hashrate.

Why Depreciation Strategy Matters for Mining Operations

A single Antminer S21 XP purchased for $5,800 today will generate roughly $3,200-$4,800 in annual mining revenue at current hashprice levels. But the tax treatment of that $5,800 purchase — whether you expense it immediately under Section 179 or spread it over five years using MACRS — determines your effective after-tax ROI.

For a 100-unit fleet ($580,000 in hardware), the difference between these two approaches can exceed $90,000 in first-year tax savings. That cash flow advantage compounds: reinvested into additional miners, it accelerates fleet growth and revenue capacity.

Section 179 Immediate Expensing: Front-Loaded Tax Benefits

Section 179 of the Internal Revenue Code allows businesses to deduct the full purchase price of qualifying equipment in the year it is placed in service, rather than depreciating it over multiple years.

2026 Section 179 Limits

For most mining operations under the phase-out threshold, Section 179 is the simplest and most aggressive tax strategy. You purchase 50 S21 XP units for $290,000, place them in service, and deduct $290,000 from that year’s taxable income.

When Section 179 Works Best

• High-income year: Your mining operation (or other business income) generates enough taxable income to absorb the full deduction
• Growing operations: You plan to reinvest tax savings into additional hardware
• Short holding periods: You expect to sell or replace miners within 18-24 months

Section 179 Caution: Recapture

If you sell a fully-expensed miner, the sale proceeds are taxed as ordinary income (depreciation recapture under Section 1245). A miner expensed at $5,800 and sold 14 months later for $3,200 creates $3,200 in ordinary income — not a capital gain.

MACRS 5-Year Depreciation: Spreading the Deduction

The Modified Accelerated Cost Recovery System (MACRS) assigns ASIC miners to the 5-year property class. Under the 200% declining balance method, the annual depreciation percentages are:

When MACRS Works Best

• Low-income years: Insufficient taxable income to absorb full Section 179 deduction
• Stable fleet: You plan to hold miners for 3+ years
• Tax smoothing: You prefer predictable deductions across multiple years
• Large purchases near phase-out: Fleet investment exceeds Section 179 limits

Bonus Depreciation: The Shrinking Middle Ground

First-year bonus depreciation has been phasing down since 2023. For equipment placed in service in 2026, the bonus depreciation rate is 40% (down from 100% in 2022). This means you can deduct 40% of the cost in year one, then apply regular MACRS to the remaining 60%.

With bonus depreciation effectively disappearing, Section 179 becomes the primary first-year expensing tool for mining operations.

Optimal Resale Timing: When to Sell Your ASIC Miners

The intersection of hardware depreciation (tax book value declining) and market resale value (real-world secondary market price declining) creates specific windows where selling is tax-optimal.

ASIC Market Depreciation Curve

ASIC miners follow a characteristic depreciation curve driven by three factors:

1. Efficiency obsolescence: New-generation miners (better J/TH) reduce demand for older models
2. Network difficulty growth: Higher difficulty reduces per-TH revenue, compressing margins on less-efficient hardware
3. Physical wear: Hash board degradation, fan failures, and thermal cycling damage reduce output over time

Resale Value Benchmarks by Age

The Tax-Optimal Sell Window

Under Section 179 (full first-year expensing), every dollar of resale proceeds is ordinary income. The optimal sell window is when:

Resale value minus tax on recapture income > continued mining revenue minus operating costs

For most current-generation miners at typical hosting rates ($0.075-$0.095/kWh), this crossover occurs at 14-20 months — when the miner still commands 40-55% of purchase price but daily mining revenue has declined enough that redeployment into next-gen hardware yields better after-tax returns.

Fleet Refresh Strategy: Sell-and-Upgrade Cycles

Professional mining operations treat fleet management as a continuous cycle, not a buy-and-hold strategy. Here is the framework:

The 16-Month Refresh Cycle

1. Month 0: Purchase new-generation miners, elect Section 179 expensing
2. Months 1-12: Mine at peak efficiency; monitor next-gen announcements
3. Month 12-14: List current fleet on secondary market while prices are still strong
4. Month 14-16: Execute sale, purchase next-gen hardware, repeat Section 179

Cash Flow Example: 100-Unit Fleet

The cycle generates near-neutral taxable income while continuously upgrading to more efficient hardware — a strategy that compounds efficiency gains over multiple generations.

Record-Keeping Requirements

The IRS requires documentation for all equipment depreciation claims:

• Purchase invoices with serial numbers, model numbers, and costs
• Placed-in-service dates (when mining began, not when hardware arrived)
• Depreciation method elected (Section 179, bonus, or MACRS)
• Sale documentation with buyer information, sale price, and date
• Mining logs showing the equipment was used in a trade or business

For hosted mining operations, your hosting provider’s onboarding records and hashrate reports serve as placed-in-service documentation.

Frequently Asked Questions

Can I use Section 179 if I mine as an individual (not an LLC)?

Section 179 applies to businesses, including sole proprietors who report mining income on Schedule C. If you mine as a hobby (Schedule 1 other income), Section 179 does not apply.

What if my mining income is negative — can I still take depreciation?

Section 179 deductions cannot create or increase a net operating loss from the business. However, MACRS depreciation can. If your Section 179 deduction exceeds business income, the excess carries forward to future years.

How do I handle miners that fail or become worthless?

Miners that are scrapped or become worthless can be written off as a loss in the year of abandonment. Document the failure (hash board diagnostics, repair estimates exceeding replacement cost) and report the remaining book value as a Section 1231 loss.

Should I depreciate power supply units separately?

PSUs can be depreciated as part of the miner (single asset) or separately. Separating them is useful if you plan to reuse PSUs across miner generations — the PSU retains a longer useful life and lower annual depreciation.

Does hosted mining qualify for the same depreciation benefits as self-mining?

Yes. If you own the hardware and it is placed in service at a colocation facility, you claim depreciation on the equipment. The hosting provider does not depreciate your hardware — you do.

Next Steps: Optimize Your Mining Tax Strategy

Depreciation is one piece of a broader tax strategy for mining operations. Combine it with proper operational consulting and competitive hosting rates from $0.075/kWh to maximize after-tax returns. For fleet purchases, explore our ASIC inventory for current pricing on new and certified refurbished miners. NatGas MDU deployments offer additional depreciation benefits for the container infrastructure itself.