Bitcoin Mining Bonus Depreciation and Section 179: The Complete 2026 Estate Tax Strategy

Why Mining Equipment Is Unique in the Tax Code

Most Bitcoin acquisition strategies are tax-neutral at the point of entry. You buy Bitcoin with after-tax dollars. There is no deduction, no depreciation, no write-off. The tax benefit — if any — comes later, through long-term capital gains rates or step-up in basis at death.

Mining is different. Mining equipment is tangible personal property. Under the Internal Revenue Code, it qualifies for three simultaneous accelerated deduction mechanisms: bonus depreciation under §168(k), Section 179 expensing, and MACRS cost recovery. These tools allow you to deduct the entire cost of mining hardware — potentially in the year you place it in service — against ordinary income.

The result: you acquire Bitcoin at a net after-tax cost that is dramatically lower than purchasing it on an exchange. And the Bitcoin you mine arrives with a cost basis equal to its fair market value at the time of mining — not zero. That distinction matters enormously when you begin layering estate planning structures on top of the mining operation.

For families with estates approaching or exceeding the $15 million per-person exemption under the One Big Beautiful Bill Act (OBBBA), the combination is particularly compelling. Mining generates current deductions that reduce lifetime tax liability, produces Bitcoin with a favorable cost basis, and creates entity interests that can be transferred to dynasty trusts at discounted valuations — consuming a fraction of the lifetime exemption while moving future Bitcoin appreciation outside the taxable estate entirely.

This guide covers the full depreciation framework for Bitcoin mining equipment in 2026, the entity structures that optimize pass-through deductions, and the estate planning strategies that convert mining operations into intergenerational wealth transfer vehicles.

The Bonus Depreciation Schedule: 2022–2027

Bonus depreciation under IRC §168(k) allows taxpayers to deduct a percentage of the cost of qualifying property in the year it is placed in service — before regular MACRS depreciation applies. For Bitcoin mining equipment, which is classified as 5-year MACRS property, the bonus depreciation percentages have followed a scheduled phase-down since the Tax Cuts and Jobs Act of 2017:

Tax Year	Bonus Depreciation Rate	Deduction on $1M Equipment
2022	100%	$1,000,000
2023	80%	$800,000
2024	60%	$600,000
2025	40%	$400,000
2026	20%	$200,000
2027	0%	$0

The phase-down changes the math but not the strategy. At 20% bonus depreciation in 2026, a $2.1 million equipment purchase generates $420,000 in first-year bonus depreciation. The remaining $1.68 million is recovered through regular MACRS depreciation over the 5-year recovery period. When combined with Section 179 expensing, the first-year deduction can still approach the full equipment cost — depending on the taxpayer's income profile and entity structure.

New vs. Used Property

One of the less-appreciated expansions of the TCJA: bonus depreciation now covers used property for the first time, provided it is "new to the taxpayer" — meaning you haven't used it before. This is significant for mining operations acquiring secondary-market ASICs. An S21 Pro purchased from another mining operation at a discount qualifies for the same bonus depreciation treatment as a new unit from Bitmain, provided you haven't previously owned that specific unit. This opens strategies for acquiring depreciated-but-functional hardware at below-retail prices while still claiming first-year bonus depreciation.

Section 179 Expensing: Mechanics and Limits

Section 179 of the Internal Revenue Code allows businesses to elect to expense the cost of qualifying property in the year it is placed in service, rather than depreciating it over multiple years. For 2026, the relevant thresholds are:

• Maximum deduction: $1,250,000
• Phase-out threshold: $3,130,000 — the deduction begins to reduce dollar-for-dollar once total qualifying property placed in service exceeds this amount
• Full phase-out: $4,380,000 — no Section 179 deduction available
• Placed in service requirement: Property must be placed in service during the tax year in which the deduction is claimed

The critical distinction between Section 179 and bonus depreciation: Section 179 cannot create or increase a net operating loss. The deduction is limited to the aggregate amount of taxable income derived from the active conduct of any trade or business. Bonus depreciation has no such limitation — it can create an NOL that carries forward indefinitely under the TCJA rules.

For mining operations, this means Section 179 is most valuable when the taxpayer has substantial other business income to offset. A physician generating $1.2 million in surgical income who also operates a Bitcoin mining business can use Section 179 to expense up to $1.25 million of mining equipment against that combined income — but only if the mining operation itself is an active trade or business (not a passive activity).

Combining §179 and Bonus Depreciation

The ordering rules allow taxpayers to stack these deductions. The IRS applies Section 179 first, then bonus depreciation on the remaining cost, then regular MACRS on what's left. For a $2.1 million equipment purchase in 2026:

Deduction Layer	Amount	Remaining Basis
Section 179 (elected)	$1,250,000	$850,000
Bonus Depreciation (20% × $850K)	$170,000	$680,000
MACRS Year 1 (20% × $680K)	$136,000	$544,000
Total Year 1 Deduction	$1,556,000	$544,000

That is 74% of the equipment cost deducted in Year 1, even with bonus depreciation at only 20%. The remaining $544,000 flows through MACRS over the next four years. At a combined federal and state marginal rate of 45%, the Year 1 tax savings exceed $700,000 — on equipment that is simultaneously generating Bitcoin.

MACRS 5-Year Recovery for Mining ASICs

Bitcoin mining ASICs — Antminer S21 Pro, Whatsminer M60S, and similar units — are classified as 5-year MACRS property under the General Depreciation System (GDS). This classification applies because mining hardware is considered "information systems" or "computers and peripherals" under IRS Asset Class 00.12, which assigns a 5-year recovery period.

The MACRS 200% declining balance method produces the following depreciation percentages for 5-year property (with the half-year convention):

Recovery Year	MACRS %	Deduction on $680K Remaining Basis
Year 1	20.00%	$136,000
Year 2	32.00%	$217,600
Year 3	19.20%	$130,560
Year 4	11.52%	$78,336
Year 5	11.52%	$78,336
Year 6	5.76%	$39,168

Note the half-year convention: MACRS assumes property is placed in service at the midpoint of the first year, which is why Year 1 is 20% and the recovery extends into a sixth year. If more than 40% of all qualifying property is placed in service during the last quarter of the tax year, the mid-quarter convention applies instead — resulting in a smaller first-year deduction. This is a planning trap for mining operations that take delivery of large ASIC shipments in Q4.

Component Depreciation

A mining operation involves more than ASICs. Power distribution units (PDUs), transformers, networking switches, immersion cooling tanks, and monitoring systems each have their own depreciable classification. Most ancillary mining equipment also qualifies as 5-year MACRS property, but items with a longer useful life — such as electrical infrastructure permanently affixed to a building — may fall under different class lives, which leads directly to cost segregation analysis.

Entity Structure: LLC vs S-Corp vs C-Corp

The entity through which you operate your mining business determines how depreciation deductions flow to your personal return — and whether they flow at all.

Single-Member LLC (Disregarded Entity)

The simplest structure. All depreciation deductions pass directly to Schedule C (or Schedule E if organized as a multi-member LLC). The owner claims bonus depreciation and Section 179 on their personal Form 1040. Disadvantages: self-employment tax on mining income (15.3% on the first $168,600, 2.9% above), and no ability to split income between wages and distributions.

S-Corporation

Depreciation deductions pass through to shareholders on Schedule K-1. The S-Corp can elect Section 179, and the deduction flows to the shareholder — but is subject to the shareholder's at-risk and basis limitations. The shareholder must have sufficient basis in the S-Corp (stock basis + debt basis) to absorb the depreciation deduction. A common failure point: a shareholder who capitalizes the mining operation with a bank loan to the S-Corp does not get debt basis in an S-Corp (unlike a partnership), which can strand depreciation deductions. For more on the S-Corp implications for mining, see our analysis of mining self-employment tax and S-Corp election.

C-Corporation

Depreciation deductions reduce corporate taxable income at the 21% flat rate. Deductions do not pass through to shareholders. This means the individual owner receives no personal income tax benefit from mining depreciation — the benefit stays at the corporate level. C-Corps are rarely optimal for mining unless the operation is large enough to benefit from the lower corporate rate and the owner does not need the deductions to offset personal income. The double-taxation issue (corporate tax + dividend tax) further diminishes the appeal for estate planning purposes.

Partnership / Multi-Member LLC

For estate planning, this is often the optimal structure. A mining LLC taxed as a partnership allows depreciation deductions to be allocated among partners according to the partnership agreement — subject to the substantial economic effect rules of §704(b). A family limited partnership structure can allocate depreciation to the general partner (the patriarch/matriarch who needs the deduction) while shifting future appreciation to limited partners (children, trusts). This is the foundation of the mining-plus-estate-planning strategy detailed below.

Cost Segregation for Mining Facilities

If your mining operation occupies a dedicated facility — whether a warehouse, shipping container array, or purpose-built data center — a cost segregation study can accelerate depreciation on the building and its components by reclassifying elements into shorter recovery periods.

A typical mining facility contains assets across multiple MACRS class lives:

Component	MACRS Class	Recovery Period
ASIC miners, GPUs, servers	5-year	5 years
Electrical wiring, outlets, dedicated circuits	5-year or 7-year	5–7 years
Cooling systems (HVAC, immersion tanks)	7-year or 15-year	7–15 years
Electrical transformers, switchgear	15-year	15 years
Site improvements (paving, fencing, drainage)	15-year	15 years
Building shell (roof, walls, foundation)	39-year	39 years

Without a cost segregation study, the entire facility may default to 39-year nonresidential real property depreciation — straight-line, no bonus depreciation eligibility (for the building component). A qualified cost segregation engineer can reclassify 20–40% of a facility's cost into 5-year and 15-year property, making those components eligible for bonus depreciation and dramatically accelerating deductions.

For a $3 million mining facility, reclassifying 30% of the building cost ($900,000) from 39-year to 5-year and 15-year property can generate $200,000+ in additional first-year deductions — on top of the equipment depreciation.

Mining in a Trust: Authority, UBIT, and Structure

Can a trust operate a Bitcoin mining business? Yes — but the structure requires careful drafting, and the tax consequences differ sharply depending on the type of trust.

Grantor Trusts

An irrevocable grantor trust (such as an intentionally defective grantor trust, or IDGT) is the most common vehicle for trust-based mining. Because the grantor is treated as the owner for income tax purposes, all mining income and depreciation deductions flow to the grantor's personal return. The trust owns the mining equipment and the mined Bitcoin, but the grantor pays the income tax — which functions as an additional tax-free gift to the trust beneficiaries. This is the same mechanism that makes IDGTs powerful for dynasty trust planning generally.

Non-Grantor Trusts

A non-grantor trust that operates a mining business is taxed at trust income tax rates — which reach the top 37% bracket at only $15,200 of taxable income (2026). Depreciation deductions are particularly valuable here because they offset mining income that would otherwise be taxed at the highest marginal rate almost immediately. However, the trust must be conducting a trade or business (not a passive activity) to claim Section 179, and the trustee must have explicit authority in the trust instrument to operate a business.

Mining in an IRA: The UBIT Problem

Operating a mining business inside a self-directed IRA triggers Unrelated Business Income Tax (UBIT). Mining constitutes an unrelated trade or business, and UBIT applies at regular corporate rates to the first dollar of mining income (after a $1,000 exemption). Depreciation deductions offset UBIT, but the structural complexity — filing Form 990-T, the UBTI silo rules, and the risk of a prohibited transaction disqualifying the entire IRA — makes this approach suitable only for sophisticated operators with dedicated tax counsel. In most cases, holding Bitcoin directly in an IRA (without mining) or operating the mine outside the IRA is more efficient.

The Mined Bitcoin Basis Advantage

This is where mining diverges most sharply from simply buying Bitcoin.

When you purchase Bitcoin on an exchange for $75,000, your cost basis is $75,000. Straightforward.

When you mine Bitcoin, your cost basis in each coin is the fair market value at the time of mining — the price at which you recognize ordinary income. If you mine 1 BTC when the price is $75,000, you recognize $75,000 of ordinary income and your basis in that Bitcoin is $75,000.

Here is the critical insight: that ordinary income is offset by your depreciation deductions. The depreciation on your mining equipment effectively subsidizes the income recognition, meaning you acquire Bitcoin with a $75,000 basis while paying tax on far less than $75,000 of net income (because depreciation reduces your taxable mining income, potentially to zero or below).

Compare this to buying Bitcoin outright: no deduction at purchase, the same basis ($75,000), and the same capital gain at sale. The miner gets the same tax result on the Bitcoin itself — but also gets the depreciation deduction on the equipment that produced it. That depreciation deduction is pure economic surplus that the buyer never receives.

Estate Planning with Mining Operations

Mining operations create multiple estate planning opportunities that passive Bitcoin holding does not. The 2026 environment — with the OBBBA-extended $15 million per-person exemption ($30 million for married couples) and $19,000 annual gift exclusion — amplifies each of these strategies.

Gifting Mining LLC Interests to a Dynasty Trust

A mining operation structured as an LLC can be gifted or sold to a dynasty trust at a discounted valuation. The discount arises from two well-established valuation adjustments:

• Lack of Marketability Discount (DLOM): LLC membership interests cannot be sold on a public exchange. Qualified appraisers typically apply 15–30% discounts for lack of marketability.
• Minority Interest Discount: If the gifted interest is a non-controlling position (e.g., 49% limited partnership interest), an additional 10–25% discount may apply.

Combined, these discounts can reduce the gift tax value of a mining LLC interest by 25–45%. A mining operation with $5 million in assets (equipment + mined Bitcoin + energy contracts) can transfer a 49% interest valued at $2.45 million for gift tax purposes — but with a discounted value of $1.35–$1.84 million, consuming far less of the $15 million lifetime exemption.

The mechanics mirror family limited partnership estate planning: the patriarch retains the general partner interest (control), gifts limited partner interests to the dynasty trust, and the trust receives its proportionate share of mined Bitcoin going forward — outside the patriarch's taxable estate.

Installment Sale to a Grantor Trust

Alternatively, the mining LLC interest can be sold to an intentionally defective grantor trust in exchange for an installment note bearing the applicable federal rate (AFR). Because the grantor trust is disregarded for income tax purposes, the sale is not a taxable event. The trust pays interest on the note (at the AFR, currently around 4.6% for mid-term notes), and all mining income and Bitcoin appreciation above that hurdle rate passes to the trust beneficiaries free of gift and estate tax.

This is the classic estate freeze technique, applied to a mining operation. The mining income services the note, the depreciation deductions flow to the grantor's personal return (reducing the tax cost), and the mined Bitcoin accumulates inside the trust for future generations.

The Energy Contract as Estate Asset

Most advisors value a mining operation by looking at two things: equipment and Bitcoin holdings. They miss the third asset entirely — and it may be the most durable of the three.

An often-overlooked component of a mining operation's value is the energy contract itself. A power purchase agreement (PPA) or hosting agreement that provides electricity at below-market rates — say, $0.045/kWh when the market rate is $0.08/kWh — has independent economic value. That contract can be:

• Appraised as an intangible asset of the mining LLC, increasing the total enterprise value but also the available valuation discounts
• Transferred along with the mining LLC interest to a dynasty trust or FLP, moving the future economic benefit of below-market energy outside the taxable estate
• Used as collateral for the installment note in a grantor trust sale, providing security without requiring the grantor to personally guarantee the obligation

For large-scale operations with long-term fixed-rate PPAs, the energy contract may represent 15–25% of the total enterprise value. Failing to include it in the estate plan means leaving transferable value inside the taxable estate unnecessarily.

Consider a 10-year PPA at $0.045/kWh for 5 MW of capacity, signed when market rates were $0.07/kWh. The annual savings of $0.025/kWh × 5,000 kW × 8,760 hours = approximately $1,095,000 per year. Over the remaining term of the agreement, that below-market differential has a present value of several million dollars — value that transfers with the mining LLC interest when it moves into a dynasty trust. The energy contract is not just an operating advantage; it is a transferable estate asset with quantifiable value that benefits from the same lack-of-marketability and minority-interest discounts applied to the overall LLC.

Depreciation Recapture Elimination at Death

Every dollar of depreciation you claim on mining equipment creates a future Section 1245 depreciation recapture liability. If you sell the equipment (or the mining entity in an asset sale) during your lifetime, all prior depreciation is recaptured as ordinary income — not capital gains. On $2.1 million of fully depreciated equipment sold for $800,000, that is $800,000 of ordinary income at up to 37%.

But Section 1014 of the Internal Revenue Code provides the escape: when property passes through an estate at death, the heir receives a stepped-up basis equal to fair market value at the date of death. The stepped-up basis permanently eliminates all built-in depreciation recapture. If the decedent's mining equipment has an adjusted basis of zero (fully depreciated) and a fair market value of $800,000 at death, the heir's basis is $800,000. If the heir sells the equipment immediately for $800,000, the gain is zero. The recapture is gone.

For this reason, mining families that structure their operations inside entities designed for intergenerational holding — FLPs, dynasty trusts, or holding companies — achieve a double benefit: the depreciation deductions during life and the elimination of recapture at death. The buy-borrow-die strategy applies naturally to mining operations: take the deductions, borrow against the accumulated Bitcoin if you need liquidity, and let the stepped-up basis clean up the recapture at death.

Case Study: The Rodriguez Mining Operation

Dr. Elena Rodriguez is an orthopedic surgeon generating $1.4 million in annual W-2 income. Her husband Marco manages real estate investments producing $300,000 in net rental income. Combined household income: $1.7 million. Combined marginal federal rate: 37%. State rate: 9.3% (California). Total marginal rate: approximately 46%.

In January 2026, the Rodriguez family deploys 500 Antminer S21 Pro ASICs at a hosted mining facility in West Texas. Total equipment cost: $2.1 million. The hosting agreement provides electricity at $0.048/kWh under a 3-year fixed-rate PPA.

Entity Structure

The operation is structured as Rodriguez Mining Partners, LLC — a multi-member LLC taxed as a partnership. Elena holds a 51% general partner interest. The Rodriguez Family Dynasty Trust (a Nevada-sited, self-settled irrevocable grantor trust) holds a 49% limited partner interest, acquired via a gift in January 2026.

The dynasty trust interest is appraised at $1,029,000 (49% × $2.1M equipment value), then discounted 32% for combined lack of marketability and minority interest, yielding a gift tax value of $699,720. This consumes less than 5% of Elena's $15 million lifetime exemption.

Year 1 Tax Impact (2026)

Deduction Component	Calculation	Elena's Share (51%)
Section 179 (elected)	$1,250,000	$637,500
Bonus Depreciation (20% × $850K)	$170,000	$86,700
MACRS Year 1 (20% × $680K)	$136,000	$69,360
Total Depreciation	$1,556,000	$793,560

The mining operation is projected to produce approximately 18.5 BTC in its first year (assuming average network difficulty and a Bitcoin price of $75,000). At $75,000 per BTC, that is $1,387,500 in gross mining revenue. After deducting electricity ($378,000), hosting fees ($126,000), and other operating expenses ($42,000), net mining income before depreciation is approximately $841,500.

Elena's 51% share of net mining income: $429,165. Her 51% share of depreciation: $793,560. The net effect on Elena's personal return: a $364,395 loss from the mining partnership, which offsets a portion of her surgical income. Note: because Elena materially participates in the mining operation (she makes management decisions and spends more than 100 hours on the activity), the loss is not passive and can offset her active surgical income.

Tax savings at a 46% marginal rate: approximately $167,622 in Year 1.

The Dynasty Trust Side

The dynasty trust receives 49% of the mined Bitcoin — approximately 9.07 BTC in Year 1. Because the trust is a grantor trust, Elena pays the income tax on the trust's share of mining income. The trust receives the Bitcoin tax-free (the tax payment by Elena is an additional, non-taxable gift to the trust).

Over a 10-year period, assuming consistent mining output and Bitcoin appreciation, the trust accumulates a significant Bitcoin position — entirely outside Elena and Marco's taxable estate. If Bitcoin reaches $250,000 per coin in 10 years, the trust's mining-sourced Bitcoin alone could be worth $22+ million, all transferred using less than $700,000 of lifetime exemption.

Depreciation Recapture Planning

After the ASICs are fully depreciated (adjusted basis: zero), the Rodriguez family does not sell the equipment. They continue operating until the machines reach end of useful life, then decommission them (scrap value: near zero, no recapture). If Elena passes away while the mining LLC still holds appreciated equipment or Bitcoin, the stepped-up basis under §1014 eliminates any remaining recapture liability on her 51% interest.

Summary: Rodriguez Mining Strategy Results

Metric	Value
Equipment cost	$2,100,000
Year 1 total depreciation	$1,556,000
Elena's Year 1 tax savings (est.)	$167,622
Gift tax exemption consumed	$699,720
% of $15M exemption used	4.7%
Year 1 BTC to dynasty trust	~9.07 BTC
Depreciation recapture at death	$0 (stepped-up basis)

Action Framework for 2026

If you are deploying capital into Bitcoin mining and have an estate valued above the $15 million per-person exemption (or expect it to exceed that threshold), the following framework integrates the depreciation and estate planning strategies covered in this guide:

1. Entity formation: Establish a mining LLC taxed as a partnership. The operating agreement should allocate depreciation to the partner who needs the deductions (typically the high-income patriarch/matriarch) while distributing mined Bitcoin proportionally to all partners, including trust entities.
2. Dynasty trust establishment: If not already in place, establish an irrevocable dynasty trust in a trust-friendly jurisdiction (Nevada, South Dakota, Delaware). Fund the trust with a gift of limited partnership interests in the mining LLC, using qualified appraisals to support valuation discounts.
3. Equipment acquisition timing: Place equipment in service before Q4 to avoid the mid-quarter convention. If Q4 delivery is unavoidable, maximize Section 179 on Q4 equipment and rely on bonus depreciation + MACRS for earlier acquisitions.
4. Section 179 election: File the election on Form 4562 with the partnership return. Ensure total qualifying property stays below the $3.13M phase-out threshold, or plan the phase-out impact.
5. Cost segregation study: If the operation includes a dedicated facility, commission a cost segregation study before filing the first tax return. The study can be applied to the year the facility was placed in service (or retroactively under a change in accounting method).
6. Material participation documentation: Maintain contemporaneous logs of hours spent on mining management decisions. The 100-hour / 500-hour material participation thresholds under the §469 regulations must be met to avoid passive activity loss limitations.
7. Annual gifting: Use the $19,000 per-person annual gift exclusion to transfer additional mining LLC interests to family members or trusts each year, supplementing the initial gift of limited partner interests.
8. Hold strategy: Plan to hold mining equipment until decommission or death. Do not sell depreciated equipment during life unless the operational economics clearly justify triggering recapture.

The convergence of accelerated depreciation, favorable entity structuring, and the extended estate tax exemption makes 2026 a uniquely powerful year for deploying mining capital inside an estate plan. The depreciation benefits are diminishing (bonus drops to 20%), but the estate planning environment — $15 million exemption, valuation discounts, grantor trust mechanics — remains as favorable as it has ever been.

The families who are executing these strategies are not doing so because Bitcoin mining is fashionable. They are doing it because the tax code, for a limited time, allows you to convert ordinary income deductions into intergenerational Bitcoin wealth at a net cost that no other asset class can replicate.

Structure it correctly. Document it meticulously. And work with counsel who understands both the depreciation mechanics and the estate planning architecture — ideally, professionals who have structured mining-specific entities before, not generalists adapting a template. The intersection of depreciation timing, partnership allocations, grantor trust mechanics, and ASIC useful life creates a planning surface that is narrow and unforgiving. Get it right, and you build a wealth transfer engine that compounds for decades. Get it wrong — a misallocated depreciation deduction, a passive activity recharacterization, a trustee without business operation authority — and the entire structure can unravel in an audit.

This is not a strategy that tolerates shortcuts.