Stepped-Up Basis for Crypto: The Biggest Tax Advantage You Might Be Missing

Disclaimer: This article is for educational and informational purposes only. It does not constitute tax, legal, or financial advice. Tax laws vary by jurisdiction and change frequently. Consult a qualified tax professional or CPA with cryptocurrency expertise before making any decisions based on the information presented here.

If you bought Bitcoin at $100 and it is now worth $100,000, selling it would mean paying capital gains tax on $99,900 of appreciation. At the top federal rate of 23.8 percent, that is roughly $23,776 in taxes on a single coin. But if your heirs inherit that same Bitcoin, their cost basis resets to $100,000 — the fair market value at the time of your death. If they sell immediately, they owe zero capital gains tax. Twenty years of unrealized appreciation, completely erased from the tax ledger.

This is stepped-up basis, and it is the single most powerful tax planning tool available to cryptocurrency holders in the United States today. Combined with the permanent $15 million estate tax exemption enacted by the One Big Beautiful Bill Act (OBBBA) in 2025, the vast majority of crypto holders can now transfer their entire digital estate to the next generation with zero federal tax liability — no capital gains tax, no estate tax, no gift tax.

Yet most crypto holders have never heard of it, and fewer still have structured their holdings to take full advantage of it. This guide explains exactly how stepped-up basis works, how it interacts with the current estate tax framework, and what you need to do to document it properly in an era of increasing IRS scrutiny.

For a broader overview of crypto tax obligations for heirs, see our complete guide to crypto inheritance and taxes in 2026. For guidance on structuring your inheritance plan from the ground up, our crypto inheritance planning guide covers the full spectrum of tools and strategies.

What Is Stepped-Up Basis?

Stepped-up basis is a provision of the U.S. Internal Revenue Code, specifically IRC Section 1014, that adjusts the cost basis of an inherited asset to its fair market value (FMV) at the date of the decedent's death. The "step-up" refers to the increase in basis that occurs when an asset has appreciated in value between the time it was originally acquired and the time the owner dies.

How It Works in Practice

Every asset has a cost basis — the original price paid to acquire it, plus any adjustments for fees, improvements, or other factors. When you sell an asset, your capital gain or loss is calculated as the difference between the sale price and the cost basis. A higher basis means less taxable gain.

Under IRC Section 1014, when an asset passes to a beneficiary through inheritance (as opposed to a lifetime gift), the beneficiary's cost basis is not the original purchase price. Instead, it is reset to the fair market value of the asset on the date of the decedent's death. This means that all of the appreciation that occurred during the decedent's lifetime is never taxed as a capital gain.

For cryptocurrency holders who acquired their positions years ago at a fraction of today's prices, this provision can eliminate tens of thousands, hundreds of thousands, or even millions of dollars in capital gains tax liability.

IRS Confirmation for Digital Assets

There was a period of uncertainty about whether cryptocurrency qualified for stepped-up basis treatment. The IRS has since confirmed that virtual currencies are treated as property for federal tax purposes (IRS Notice 2014-21), and all property passing through an estate is eligible for the basis adjustment under Section 1014. There is no carve-out or exception for digital assets, DeFi positions, or tokens of any kind.

This means Bitcoin, Ethereum, stablecoins, governance tokens, LP tokens, NFTs, and any other digital asset you hold are all eligible for stepped-up basis treatment when they pass through your estate to your beneficiaries.

The Alternate Valuation Date

In addition to the date-of-death valuation, the executor of an estate can elect to use an alternate valuation date — exactly six months after the date of death — if doing so would reduce the overall value of the estate. This election is made on the estate tax return (Form 706) and applies to the entire estate, not individual assets.

For crypto estates, the alternate valuation date can be strategically valuable if the market declines in the six months following the owner's death. However, it also means a lower stepped-up basis for beneficiaries, so the trade-off between estate tax savings and higher future capital gains must be evaluated carefully with a tax professional.

Stepped-Up vs. Carry-Over Basis: A Critical Distinction

The tax treatment of an asset transfer depends entirely on whether the transfer occurs through inheritance (at death) or as a gift (during the owner's lifetime). This distinction has enormous financial consequences for crypto holders, and getting it wrong can cost beneficiaries tens of thousands of dollars or more.

Inheritance: Stepped-Up Basis

When an asset is inherited, the beneficiary receives a stepped-up basis equal to the fair market value at the date of death. All prior appreciation is wiped from the tax record.

Example: You purchased 100 ETH at $10 each (total cost basis: $1,000). At the time of your death, ETH is trading at $3,000 per token. Your beneficiary inherits the 100 ETH with a new cost basis of $300,000 ($3,000 per ETH). If they sell at $3,500 per ETH ($350,000 total), their taxable capital gain is only $50,000 — the appreciation that occurred after they inherited the tokens.

Gift: Carry-Over Basis

When you give an asset as a gift during your lifetime, the recipient does not receive a stepped-up basis. Instead, under IRC Section 1015, the recipient "carries over" your original cost basis. They step into your shoes for tax purposes, as if they had purchased the asset at the same price you did.

Example: Using the same 100 ETH purchased at $10 each, if you gift them to your child while you are alive, your child's cost basis is $10 per ETH ($1,000 total), regardless of the current market price. If they sell at $3,500 per ETH ($350,000 total), their taxable capital gain is $349,000.

The Numbers Tell the Story

The following table illustrates the tax impact for a real-world scenario: 100 ETH, originally purchased at $10 each, now worth $3,000 each at the time of transfer, later sold at $3,500 each.

At the top federal rate (20 percent long-term capital gains plus 3.8 percent net investment income tax), the inheritance path saves $71,162 compared to the gift path. For holders with larger positions or assets purchased at even lower prices, the savings scale proportionally. A holder who bought 10 Bitcoin at $500 each and passes them on when Bitcoin is at $100,000 would save their heirs over $200,000 in capital gains tax through stepped-up basis versus a lifetime gift.

The Holding Period Advantage

There is an additional benefit to inheritance that is often overlooked: the holding period. Under IRC Section 1223(9), inherited property is automatically treated as held for more than one year, regardless of how long the heir actually holds it. This means the more favorable long-term capital gains rates apply from day one, even if the heir sells the asset the day after receiving it.

Gift recipients, by contrast, also inherit the donor's holding period — but this only matters if the donor held the asset for less than a year. For most crypto inheritance scenarios involving long-held positions, both paths result in long-term treatment. Still, the automatic long-term classification for inherited property provides an extra layer of certainty.

The OBBBA: What Changed in 2025

The One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, made sweeping changes to the federal estate and gift tax framework. For crypto holders, the most consequential change was the permanent increase and indexing of the estate tax exemption — a provision that, combined with stepped-up basis, effectively eliminates federal tax on wealth transfers for the vast majority of American families.

The $15 Million Exemption (Permanent)

The headline provision: the federal estate and gift tax exemption was set at $15 million per individual and $30 million for married couples. This is the amount of wealth that can pass to heirs free of federal estate tax, whether through lifetime gifts or bequests at death.

Key details of the new exemption:

• $15 million per person — a single individual can transfer up to $15 million in total value (including all lifetime taxable gifts and the estate at death) without triggering any federal estate or gift tax
• $30 million for married couples — through the portability provision, a surviving spouse can use any unused portion of the deceased spouse's exemption, effectively doubling the available exemption to $30 million
• Permanent — unlike the elevated exemptions under the Tax Cuts and Jobs Act (TCJA) of 2017, which were set to sunset at the end of 2025, the OBBBA exemption is permanent and does not expire
• Inflation indexed — beginning in 2027, the exemption amount will be adjusted annually for inflation, protecting its real value over time
• Top estate tax rate: 40 percent — for estates that exceed the exemption, the marginal rate on the excess remains at 40 percent

What This Means for Crypto Holders

The combined effect of stepped-up basis and the $15 million exemption is remarkable. Consider the implications:

1. If your total estate (including crypto) is under $15 million: You pay zero federal estate tax, and your heirs receive a full stepped-up basis on all inherited crypto. The result is zero federal tax on the transfer — no estate tax, no capital gains tax on prior appreciation.

2. If your estate is between $15 million and $30 million (married): Through proper planning with your spouse, portability elections, and potentially a bypass trust, you can still achieve zero federal estate tax and full stepped-up basis treatment.

3. If your estate exceeds $15 million (single) or $30 million (married): The excess is subject to the 40 percent estate tax rate, but the crypto assets still receive a stepped-up basis. The estate tax and the income tax basis adjustment are separate calculations.

For context, the $15 million exemption covers well over 99 percent of all estates in the United States. The vast majority of crypto holders — even those with substantial portfolios — will fall below this threshold and pay zero federal transfer tax.

The Annual Gift Tax Exclusion

Separate from the lifetime exemption, the annual gift tax exclusion allows you to give up to $19,000 per recipient in 2026 without using any of your lifetime exemption or filing a gift tax return. Married couples can jointly give $38,000 per recipient.

However, here is the critical point for crypto holders: gifts use carry-over basis, not stepped-up basis. A $19,000 annual exclusion gift of Bitcoin that you bought at $500 gives the recipient a cost basis of $500 — not $19,000. When they sell, they pay capital gains tax on the full appreciation from your original purchase price.

This creates a strategic tension. Annual gifts can be useful for gradually reducing the size of your estate, but each gift transfers the embedded capital gains liability along with the asset. For highly appreciated crypto, the capital gains tax cost of gifting often outweighs the estate tax benefit, especially when the estate would have been below the exemption threshold anyway.

How to Determine Fair Market Value for Crypto

The entire stepped-up basis framework hinges on accurately establishing the fair market value of inherited crypto at the date of death. Getting this number right — and documenting it defensibly — is essential for both estate tax purposes and the heir's future capital gains calculations.

IRS Guidelines on Fair Market Value

The IRS defines fair market value as the price at which property would change hands between a willing buyer and a willing seller, neither being under any compulsion to buy or sell, and both having reasonable knowledge of relevant facts (Treasury Regulation 20.2031-1(b)).

For publicly traded cryptocurrency listed on major exchanges, the FMV is generally the quoted market price on the date of death. When the asset trades on multiple exchanges with different prices, the taxpayer should use a consistent methodology — such as the average of high and low prices on a specific exchange, or a volume-weighted average across exchanges — and document the approach used.

Oracle-Based Pricing for On-Chain Documentation

For crypto assets held in smart contract vaults, there is a superior alternative to manually looking up exchange prices: oracle-based pricing. Chainlink price feeds are the industry standard for on-chain price data, aggregating prices from multiple data sources to produce manipulation-resistant, verifiable price quotes.

When a beneficiary claims assets from a HeirVault smart contract, the system automatically queries Chainlink oracles at the exact block of the claim transaction. This creates an immutable, timestamped record of the fair market value at the moment of transfer — precisely the kind of documentation that withstands IRS scrutiny.

Key advantages of oracle-based FMV documentation:

• Aggregated data — Chainlink feeds pull from multiple exchanges and data providers, reducing the risk of using a single outlier price
• Tamper-proof — oracle prices are recorded on-chain and cannot be retroactively altered
• Timestamped — the block number and transaction hash provide a verifiable time reference
• Auditable — anyone can independently verify the oracle price at a given block
• Multi-currency — HeirVault captures FMV in USD, EUR, GBP, CHF, and RUB simultaneously

Valuation for Illiquid and Complex Assets

Not all crypto assets have a readily available market price. DeFi positions, in particular, present valuation challenges:

• Liquidity pool (LP) tokens: The FMV is based on the proportional share of the underlying assets in the pool at the date of death. Impermanent loss must be factored in.
• Staked tokens: The FMV includes the principal plus any accrued but unclaimed rewards at the date of death.
• NFTs: Valuation is more subjective. Relevant factors include floor price of the collection, last comparable sale, rarity attributes, and the overall market for the specific project. For high-value NFTs, a qualified appraisal may be advisable.
• Governance tokens: Standard exchange pricing applies if the token is listed. For unlisted governance tokens, the FMV may be based on recent OTC transactions, treasury value per token, or comparable protocol valuations.

The IRS has not yet published standardized valuation methodologies for these asset types, which makes contemporaneous documentation all the more important. Whatever methodology you use, document it thoroughly and apply it consistently.

IRS Form 1099-DA: New Reporting Requirements

The rollout of Form 1099-DA is transforming how crypto transactions are reported to the IRS. Understanding this framework is critical for anyone planning a crypto inheritance, because it directly affects how the stepped-up basis will be documented and verified.

2025: The First Year — Gross Proceeds Only

Beginning January 1, 2025, crypto "brokers" (as defined by the Infrastructure Investment and Jobs Act of 2021 and subsequent Treasury regulations) were required to begin reporting gross proceeds from digital asset transactions to the IRS on Form 1099-DA. In this initial phase:

• Brokers report gross proceeds from sales and exchanges
• Cost basis reporting is optional (not required until 2026)
• The IRS extended good-faith penalty relief to brokers who made reasonable efforts to comply
• Covered securities rules were not yet fully in effect

2026: Full Basis Reporting Begins

Starting January 1, 2026, the reporting requirements expand significantly:

• Brokers must report the adjusted cost basis for "covered" digital assets — those acquired and held at the same broker on or after January 1, 2026
• "Noncovered" assets — those acquired before 2026 or transferred between brokers — remain the taxpayer's responsibility for basis reporting
• The distinction between covered and noncovered assets will be a major source of confusion and potential errors for years to come

Implications for Inherited Crypto

For inherited cryptocurrency, the reporting landscape creates several important considerations:

1. Broker-reported basis may not reflect the step-up. When crypto is held at a centralized exchange and the account holder dies, the exchange's cost basis records still reflect the original purchase price. The stepped-up basis is an estate and income tax concept that the exchange may not automatically apply. Heirs must work with the exchange and their tax advisor to ensure the correct basis is reflected.

2. Self-custody assets are "noncovered." Crypto held in hardware wallets, software wallets, or smart contract vaults (including HeirVault) is not held at a "broker" and therefore falls outside the 1099-DA reporting framework entirely. The heir bears full responsibility for establishing and documenting the stepped-up basis.

3. HeirVault is not a broker. As a non-custodial smart contract protocol, HeirVault does not take custody of user assets and is not classified as a broker under the current regulations. It is not required to file Form 1099-DA. However, HeirVault generates voluntary tax documentation for beneficiary convenience — including oracle-verified FMV at the time of claim, per-asset basis reports, and transaction records — specifically to help heirs establish their stepped-up basis defensibly.

The Documentation Gap

The 1099-DA framework creates a documentation gap for self-custodied crypto. Exchanges report basis for assets they hold, but nobody reports basis for assets in self-custody. The IRS knows the proceeds when an heir eventually sells on an exchange, but it does not automatically know the stepped-up basis. This means the burden of proof falls entirely on the heir.

Without proper documentation, an heir who sells inherited Bitcoin might receive a 1099-DA showing gross proceeds but no cost basis — and the IRS may assume a basis of zero, leading to a dramatically inflated tax bill. Proactive documentation of the stepped-up basis, using oracle-verified pricing and on-chain timestamps, is the best defense against this scenario.

Common Scenarios and Tax Outcomes

Abstract tax rules become clearer with concrete numbers. The following scenarios illustrate how stepped-up basis plays out in practice for different types of crypto portfolios.

Scenario 1: Simple Bitcoin Inheritance

Facts: Sarah purchased 5 BTC at $1,000 each in 2015 (total cost basis: $5,000). At the time of her death in 2026, Bitcoin is trading at $100,000 per coin. Her total crypto estate is valued at $500,000. Her son Michael is the sole beneficiary.

With stepped-up basis (inheritance):

• Michael's cost basis: $500,000 (5 BTC x $100,000)
• Michael sells at $110,000 per BTC: proceeds = $550,000
• Capital gain: $50,000
• Federal tax (20% + 3.8% NIIT): $11,900
• Estate tax: $0 (well under $15M exemption)
• Total tax: $11,900

Without stepped-up basis (hypothetical):

• Michael's basis would be Sarah's original $5,000
• Capital gain on sale at $110,000/BTC: $545,000
• Federal tax (20% + 3.8% NIIT): $129,710
• Tax savings from step-up: $117,810

Scenario 2: Multi-Asset Vault

Facts: James holds a diversified crypto portfolio in a HeirVault smart contract vault: 3 BTC (bought at $5,000 each), 50 ETH (bought at $200 each), 100,000 USDC, and various DeFi positions worth $150,000. At the time of his death, BTC is at $100,000, ETH is at $4,000. His total crypto estate is valued at $750,000. His two children split everything equally.

Key observations:

• Each asset receives its own individual stepped-up basis
• BTC step-up: from $15,000 to $300,000 — significant tax savings
• ETH step-up: from $10,000 to $200,000 — significant tax savings
• USDC step-up: from $100,000 to $100,000 — minimal or zero benefit (stablecoins do not appreciate)
• DeFi positions: stepped up to FMV at death, but valuation methodology must be documented

Per-child outcome:

• Each child inherits $375,000 in crypto with a stepped-up basis of $375,000
• If either child sells immediately, capital gains tax is approximately zero (subject to any price movement between date of death and sale)
• Estate tax: $0 (well under $15M exemption)

The stablecoin observation is important: stepped-up basis provides the greatest benefit for volatile, highly appreciated assets. Stablecoins, by design, have a value that tracks their peg and therefore receive little or no benefit from the step-up. When planning your vault allocation, this is worth considering — though it should never be the primary driver of your investment decisions.

Scenario 3: Vault with DeFi Yield

Facts: Lisa holds 20 ETH in a HeirVault with an integrated Aave lending position that has been generating yield. At the time of her death, the 20 ETH are worth $80,000, and there is $3,000 in accrued aETH yield that has not been claimed. Her daughter Anna is the beneficiary.

Tax treatment:

• Principal (20 ETH): Stepped-up basis to $80,000. No capital gains on the prior appreciation.
• Accrued yield before death ($3,000 aETH): This is part of Lisa's estate and also receives a stepped-up basis. The FMV at death becomes Anna's cost basis.
• Yield earned after death: Any interest, staking rewards, or yield that accrues between Lisa's death and the time Anna claims the vault is new income to Anna. It does not receive stepped-up basis treatment — it is ordinary income to Anna in the year she receives it, with a cost basis equal to its FMV at the time of receipt.

The distinction between pre-death and post-death yield is critical and often misunderstood. The stepped-up basis only applies to assets and value that existed at the moment of death. Anything generated afterward is treated as new income to the heir.

Scenario 4: Large Estate Exceeding the Exemption

Facts: Robert holds a total estate of $20 million, including $8 million in crypto (200 BTC purchased at $100 each in 2013, now worth $40,000 each). He is unmarried.

Tax treatment:

• Estate tax: ($20M - $15M) x 40% = $2,000,000 in federal estate tax
• Stepped-up basis: All 200 BTC receive a basis of $40,000 each ($8M total), regardless of the estate tax
• If heirs sell at $42,000: capital gain = $400,000, tax = $95,200
• Without step-up, if heirs sold at $42,000: capital gain = $8,380,000, tax = $1,994,440

Even in a taxable estate, stepped-up basis saves Robert's heirs nearly $1.9 million in capital gains tax. The estate tax and the income tax basis adjustment are separate systems — paying estate tax does not reduce the benefit of the step-up.

Gift vs. Inheritance: When Each Makes Sense

Given the powerful tax advantages of stepped-up basis, the default strategy for most crypto holders should be to hold appreciated assets until death rather than gifting them during their lifetime. However, there are specific circumstances where lifetime gifting may be the better choice.

Inheritance Is Usually Better When:

• The asset has appreciated significantly. The greater the appreciation, the more valuable the stepped-up basis becomes. For crypto purchased years ago at a fraction of current prices, inheritance almost always wins.
• The estate is below the exemption threshold. If the total estate (including all crypto) is under $15M ($30M married), there is no estate tax to plan around, and the only tax consideration is the capital gains step-up — which strongly favors inheritance.
• Simplicity is a priority. Inheritance through a properly structured vault or estate plan is a single event. Lifetime gifting requires ongoing gift tax return filings (Form 709) for gifts above the annual exclusion, and careful tracking of basis information for the recipient.
• The holder wants to maintain control. Once an asset is gifted, the donor gives up ownership and control. With an inheritance plan — particularly one using a smart contract vault with a dead man's switch — the holder retains full control until the transfer condition is triggered.

Gifting May Be Better When:

• The asset is currently at a loss. If a crypto position has declined below its cost basis, gifting it does not help (the loss does not transfer to the recipient). However, the donor can sell the position, recognize the capital loss on their own return, and then gift the cash proceeds. This is a legitimate strategy for harvesting losses while still transferring value.
• The estate will significantly exceed the exemption. For ultra-high-net-worth individuals whose estates far exceed $15M, strategic lifetime gifting can remove future appreciation from the estate, reducing the eventual estate tax bill. This is advanced planning territory that requires professional guidance.
• State estate tax is a concern. Some states have much lower estate tax exemptions than the federal threshold (Oregon's is just $1M). Lifetime gifting can reduce the state-taxable estate, though the carry-over basis trade-off must still be evaluated.
• Annual exclusion gifts for diversification. Small annual gifts ($19,000 per recipient in 2026) can be useful for introducing family members to crypto ownership, funding education, or beginning a pattern of wealth transfer — even though the carry-over basis is less favorable.

The Hybrid Approach

Many families combine both strategies: using annual exclusion gifts for modest amounts and newer (less appreciated) positions, while holding the largest and most appreciated positions for inheritance. This approach balances wealth transfer goals with tax efficiency.

A crypto holder might gift $19,000 worth of recently purchased altcoins (minimal embedded gain) to each child annually, while keeping their long-held BTC and ETH positions in a HeirVault smart contract vault designated for inheritance. The recently purchased positions have little appreciation to lose through carry-over basis, while the long-held positions benefit maximally from the eventual stepped-up basis.

How HeirVault Documents Cost Basis

In a regulatory environment where the IRS is dramatically expanding its crypto reporting infrastructure, and where the burden of proof for "noncovered" assets falls entirely on the taxpayer, automated and verifiable cost basis documentation is not a nice-to-have — it is essential.

Automated FMV Capture at Claim Execution

When a beneficiary claims assets from a HeirVault smart contract, the system automatically captures the fair market value through Chainlink oracle price feeds at the exact block of the claim transaction. This creates a precise, immutable record of the FMV at the moment of transfer:

• Oracle source: Chainlink decentralized price feeds, the most widely used oracle network in DeFi
• Timing: FMV is captured at the exact block when the claim transaction is executed on-chain
• Multi-currency: Prices are recorded simultaneously in USD, EUR, GBP, CHF, and RUB
• On-chain record: The oracle query and result are recorded in the transaction, creating a permanent, verifiable audit trail
• Block number and timestamp: Every claim is tied to a specific block number and transaction hash, providing an independently verifiable time reference

Tax Report Generation

HeirVault generates comprehensive tax documentation for beneficiaries in multiple formats:

• Per-beneficiary PDF reports — ready for filing or sharing with a tax professional
• JSON export — structured data for programmatic use or integration with custom tools
• CSV export — compatible with popular crypto tax software including Koinly, CoinTracker, and TaxBit
• Complete audit trail — each report includes the block number, transaction hash, oracle contract address, and the exact query parameters used to determine FMV

Why Automated Documentation Matters

The difference between automated, oracle-verified documentation and manual record-keeping cannot be overstated in today's regulatory environment:

1. IRS scrutiny is increasing. The 1099-DA rollout signals a new era of crypto tax enforcement. The IRS is investing heavily in blockchain analytics and expects taxpayers to substantiate their cost basis claims.

2. The burden of proof is on the taxpayer. For noncovered assets (which includes all self-custodied crypto), the taxpayer must prove their cost basis. Without documentation, the IRS can assert a basis of zero.

3. Contemporaneous records are strongest. In any tax dispute, records created at the time of the relevant event carry far more weight than reconstructed records created after the fact. Oracle-verified FMV captured at the block of the claim transaction is the gold standard of contemporaneous documentation.

4. Manual methods are fragile. Looking up a price on CoinGecko six months after a death and writing it on a spreadsheet is not the kind of documentation that survives an audit. Exchange prices can be retroactively corrected, websites can go offline, and human memory is unreliable.

5. Oracle verification is independently auditable. Anyone — including an IRS examiner — can independently verify the Chainlink oracle price at a given block number. This level of verifiability is unique to on-chain documentation and provides a degree of assurance that no paper record or screenshot can match.

If you are planning a crypto inheritance and want automated FMV capture and tax documentation, create your vault today.

State Estate Taxes: The Hidden Trap

While the $15 million federal exemption is the headline number, many crypto holders overlook the fact that several U.S. states impose their own estate or inheritance taxes — often with much lower exemption thresholds. A crypto estate that owes zero federal tax may still face a significant state tax bill.

States with Estate Taxes and Their Exemptions

States with Inheritance Taxes

A handful of states impose inheritance taxes — paid by the recipient rather than the estate — with rates that vary depending on the relationship between the heir and the decedent:

• Iowa: Being phased out by 2025 (no longer applicable in 2026)
• Kentucky: 4-16%, exempts spouse and lineal heirs
• Maryland: 10% (in addition to estate tax), exempts spouse and children
• Nebraska: 1-18%, depending on relationship
• New Jersey: 11-16%, exempts spouse, children, and grandchildren
• Pennsylvania: 0-15%, depending on relationship

The New York Cliff: A Cautionary Tale

New York's estate tax includes a particularly punishing feature known as the "cliff." If an estate exceeds 105 percent of the exemption threshold ($6.94M x 105% = $7.287M in 2026), the estate loses the entire exemption and the full estate value is taxable. This means an estate of $7.3 million could owe significantly more in state tax than an estate of $6.9 million.

For crypto holders in New York, this cliff creates a specific planning challenge. Volatile crypto assets can push an estate above the cliff threshold based on the market price on a single day — the date of death. A portfolio that was comfortably below the exemption during the holder's life could trigger the cliff if the market surges shortly before death.

Planning Around State Taxes

Several strategies can help mitigate state estate tax exposure:

• Residency planning: States without estate or inheritance taxes include Florida, Texas, Nevada, Wyoming, South Dakota, Alaska, and several others. For holders with substantial crypto estates, establishing residency in a tax-friendly state can save hundreds of thousands of dollars.
• Annual gifting: Using the $19,000 annual exclusion to gradually reduce the estate below the state exemption threshold. (Remember the carry-over basis trade-off, though — this is more effective for recently purchased assets with minimal appreciation.)
• Irrevocable trusts: In some states, assets transferred to an irrevocable trust are removed from the taxable estate. This is advanced planning that requires legal counsel.
• Charitable giving: Charitable bequests reduce the taxable estate for both federal and state purposes.

Documentation Best Practices for Stepped-Up Basis

Claiming a stepped-up basis on inherited crypto is your legal right under IRC Section 1014, but you need to be prepared to substantiate it. The following best practices will help ensure that the step-up is properly documented and defensible.

What Heirs Should Document

1. Date of death. The death certificate provides the official date. This is the default valuation date for the stepped-up basis.

2. Fair market value at date of death. For each crypto asset inherited, document the FMV on the date of death using a reliable, consistent source. Exchange prices, oracle data, or qualified appraisals (for illiquid assets) are all acceptable.

3. Source of FMV data. Note which exchange, data provider, or oracle was used, and the methodology for determining the price (e.g., closing price, average of high/low, volume-weighted average).

4. Proof of inheritance. Documentation showing that the assets were received through inheritance rather than a gift. This may include the will, trust agreement, letters testamentary, or — for smart contract vaults — the on-chain claim transaction that was triggered by the dead man's switch mechanism.

5. Estate tax return (if filed). If a Form 706 was filed, it documents the values of all estate assets as reported to the IRS. This is the single strongest piece of evidence for stepped-up basis.

What the Original Holder Should Prepare

If you are planning your crypto inheritance proactively, you can make the documentation process dramatically easier for your heirs:

• Maintain a clear asset inventory. List all crypto positions, wallets, and vaults, along with acquisition dates and costs.
• Use a smart contract vault with automated FMV capture. HeirVault records oracle-verified prices at the moment of claim execution, creating contemporaneous documentation automatically.
• Designate clear beneficiaries. Ambiguity about who inherits what creates legal disputes that can delay the step-up documentation.
• Communicate with your estate attorney. Ensure that your attorney understands that your crypto assets are eligible for stepped-up basis and that your estate plan is structured accordingly.
• Consider filing Form 706 even if not required. Estates below the filing threshold ($15M) are not required to file Form 706, but voluntarily filing it creates an IRS-acknowledged record of asset values that can be invaluable if the heir's stepped-up basis is later questioned.

Frequently Asked Questions

Does stepped-up basis apply to cryptocurrency?

Yes. The IRS treats cryptocurrency as property (IRS Notice 2014-21). All property passing through an estate is eligible for stepped-up basis under IRC Section 1014. There is no exception or limitation for digital assets.

What if the crypto has decreased in value since it was purchased?

Stepped-up basis works in both directions. If an asset has declined in value, the basis is "stepped down" to the lower FMV at death. This means the decedent's unrealized loss is also eliminated — the heir cannot claim a capital loss on the pre-death decline. In this situation, it would have been more tax-efficient for the decedent to sell the asset before death, recognize the loss, and then bequeath the cash.

Do stablecoins benefit from stepped-up basis?

Technically yes, but practically no. Since stablecoins are designed to maintain a constant value (e.g., 1 USDC = $1), there is little or no appreciation to be eliminated by the step-up. The stepped-up basis for a stablecoin will be approximately equal to the original cost basis. The step-up primarily benefits volatile assets that have appreciated significantly.

How does stepped-up basis work with community property states?

In community property states (Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin), both halves of community property receive a stepped-up basis when one spouse dies — not just the deceased spouse's half. This is an additional advantage over common law states, where only the decedent's share receives the step-up.

Can the IRS challenge my stepped-up basis?

The IRS can and does challenge cost basis claims during audits. The key to defending your stepped-up basis is contemporaneous, verifiable documentation of the FMV at the date of death. On-chain oracle-verified pricing, exchange records, and estate tax returns (Form 706) are the strongest forms of evidence.

Does stepped-up basis apply to crypto in a trust?

It depends on the type of trust. Assets in a revocable (living) trust generally receive a stepped-up basis at the grantor's death, because the trust assets are included in the grantor's estate. Assets in an irrevocable trust may or may not receive a step-up, depending on whether they are included in the grantor's gross estate for estate tax purposes. This is an area where the specific trust terms and applicable law must be analyzed by an estate attorney.

What about crypto held in a DAO or multi-sig?

The stepped-up basis applies to the decedent's ownership interest in the asset. If the decedent held a governance token representing a share of a DAO treasury, the token itself receives a stepped-up basis. If the decedent held keys to a multi-sig wallet, the portion of the assets attributable to the decedent's ownership interest is eligible for the step-up. Documentation of the ownership structure is essential.

Key Takeaways

Stepped-up basis is the single most powerful tax advantage available to crypto holders planning their estate. Here is what you need to remember:

• Stepped-up basis resets the cost basis of inherited crypto to FMV at death, eliminating all prior capital gains. For long-held positions, this can save beneficiaries hundreds of thousands of dollars in taxes.

• The OBBBA made the $15M exemption permanent, meaning the vast majority of crypto estates will owe zero federal estate tax. Combined with stepped-up basis, most heirs will pay no federal tax whatsoever on inherited crypto.

• Gifts use carry-over basis, not stepped-up basis. In almost all cases, it is more tax-efficient to pass highly appreciated crypto through inheritance rather than as a lifetime gift.

• Accurate FMV documentation is essential. In the 1099-DA era, the burden of proof for cost basis falls on the taxpayer for all self-custodied assets. Oracle-verified pricing is the strongest form of evidence.

• HeirVault automates FMV capture and tax report generation, using Chainlink oracle feeds to record verifiable prices at the exact block of claim execution. Reports are available in PDF, JSON, and CSV formats compatible with major crypto tax software.

• State estate taxes can still apply even when the federal exemption covers the entire estate. Check your state's rules, especially if you live in New York (cliff risk), Washington (20% top rate), or Oregon ($1M exemption).

Next Steps

Ready to protect your crypto for the next generation while maximizing the tax advantages of stepped-up basis? Here is how to get started:

• Create Your Vault — Set up a HeirVault smart contract vault with automated FMV capture, dead man's switch protection, and per-beneficiary tax documentation.

• Read the Tax Guide — Dive deeper into the full range of crypto tax obligations for heirs in 2026, including reporting requirements, DeFi complexities, and cross-border considerations.

• Review the Inheritance Planning Guide — Understand the complete toolkit for crypto succession planning, from smart contracts and multisig to guardians and legal frameworks.

• Explore Tax Report Features — See exactly what HeirVault's automated tax documentation includes and how it integrates with your existing crypto tax workflow.

The combination of stepped-up basis and the permanent $15M estate tax exemption represents an extraordinary opportunity for crypto holders. But the window to plan is always now — because the one thing you cannot do retroactively is set up the documentation your heirs will need. Every day you hold appreciated crypto without an inheritance plan is a day your heirs are exposed to unnecessary tax risk and the possibility of losing access entirely.

Create Your Vault and start protecting your crypto legacy today.