How to Write Off Crypto Losses

2026-03-04

Tax season is here and for US crypto investors who lost money in 2025, there is meaningful financial relief available — but only if losses are reported correctly.

The standard federal filing deadline for 2025 income is April 15, 2026, and with expanded broker reporting now in effect under new IRS regulations, accuracy in reporting crypto gains and losses matters more than ever.

The good news is that under current IRS rules, crypto losses are not just a financial setback — they are a legitimate tax tool that can reduce what you owe.

Key Takeaways

Crypto capital losses can offset an unlimited amount of capital gains from any asset class, and up to $3,000 per year of ordinary income — with any excess carried forward indefinitely to future tax years.
Form 1099-DA, the new IRS information return for digital asset sales, reports gross proceeds only for 2025 transactions — not cost basis — meaning taxpayers must independently calculate and substantiate their own gains and losses using wallet-level records.
Starting in 2025, the IRS eliminated the universal wallet method for cost basis calculations, requiring investors to calculate basis separately for each wallet or account — making detailed transaction records more critical than in previous years.

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What Counts as a Crypto Loss?

How to Write Off Crypto Losses - loss.webp

The IRS treats cryptocurrency as property, not currency. This means every time you sell, swap, or otherwise dispose of a digital asset, you trigger a taxable event — even if that transaction results in a loss.

A crypto capital loss occurs when the amount you receive from a sale is less than what you originally paid for the asset, including any fees paid to acquire it.

Capital losses from crypto can offset an unlimited amount of capital gains, and up to $3,000 in ordinary income each year, with additional losses rolled over to future tax years.

This structure means that even a difficult year in crypto can produce meaningful tax savings if losses are documented and reported properly.

Importantly, simply holding a token that has dropped in value does not create a deductible loss — the loss must be realized through an actual disposal event.

How to Calculate Your Crypto Loss

The size of your deductible loss depends on two numbers: your cost basis and your amount realized. Cost basis is what you originally paid for the asset plus any related fees.

Amount realized is what you received when you sold or exchanged it. The loss is the difference between the two.

When you hold multiple units of the same cryptocurrency bought at different prices, the specific units you sell are determined by your chosen cost basis method. Three common methods produce very different results:

FIFO (First-In, First-Out): The oldest coins you bought are treated as the ones sold first.
LIFO (Last-In, First-Out): The most recently purchased coins are treated as sold first.
HIFO (Highest-In, First-Out): The highest-cost units are treated as sold first, maximizing your deductible loss in most scenarios.

HIFO is often the most tax-efficient method for investors looking to maximize loss deductions, as it produces the largest possible loss on each disposal.

Whichever method you choose must be applied consistently, and your records must support your calculations.

Gas fees and exchange fees paid when buying or selling crypto can be added to your cost basis or deducted from your proceeds, further increasing your reported loss.

How to Report Crypto Losses on Your Tax Return

Reporting crypto losses involves two key IRS forms filed together. Every individual disposal — whether a sale, swap, or exchange — is listed on Form 8949, where you record the asset name, dates of acquisition and disposal, proceeds, cost basis, and the resulting gain or loss.

The totals from Form 8949 then flow to Schedule D of Form 1040, where all short-term and long-term results are combined to determine your net capital position for the year.

Short-term losses, from assets held one year or less, offset short-term gains first. Long-term losses, from assets held more than one year, offset long-term gains first.

After netting within each category, any remaining net loss crosses over to offset the other category.

If a net capital loss remains after all offsets, up to $3,000 can be deducted against ordinary income, with the rest carried forward to the following tax year.

Every individual taxpayer filing Form 1040 must answer the digital asset question on page one: whether they received, sold, exchanged, or otherwise disposed of a digital asset at any time during 2025.

The IRS has explicitly instructed that this question must not be left blank.

Checking "No" when crypto activity occurred creates significant legal exposure.

The New 1099-DA and What It Means for Loss Reporting

Starting with the 2025 tax year, crypto brokers like Coinbase and Kraken are required to issue Form 1099-DA reporting gross proceeds from your digital asset sales and exchanges.

You will receive this form in early 2026, and the IRS will receive a copy as well.

However, there is a critical limitation: for 2025 transactions, brokers report gross proceeds only, not cost basis or gain/loss calculations.

Assets acquired before January 1, 2026 are considered noncovered and are exempt from mandatory basis reporting, and transfers between platforms break basis lineage.

This means your 1099-DA will almost always show an incomplete picture. Relying on it alone to calculate your losses will produce inaccurate results and potentially trigger IRS notices.

Maintaining your own complete transaction history — or using crypto tax software like CoinTracker or Koinly — is essential.

Tax Loss Harvesting: Turning Losses Into Strategy

Tax loss harvesting is a proactive approach where investors deliberately sell positions at a loss before year-end to offset gains realized elsewhere in their portfolio.

Unlike stocks, cryptocurrency is currently not subject to the IRS wash sale rule — the rule that prevents you from immediately rebuying a sold security to claim a tax loss.

This means you can sell a token at a loss, claim the deduction, and repurchase the same token immediately without penalty under current law.

Investors track unrealized losses and realize them ahead of year-end to reduce their tax bill through tax loss harvesting — a strategy that is particularly powerful in crypto given the absence of wash sale restrictions that apply to securities.

This legislative gap may close in future tax years, so taking advantage of it while it remains available is a legitimate tax planning consideration worth discussing with a qualified crypto CPA.

Theft, Scam, and Exchange Failure Losses

Not all crypto losses come from selling at a loss. Some arise from hacks, scams, or exchange collapses. These are treated differently under the tax code and the rules changed significantly with the 2025 One Big Beautiful Bill Act (OBBBA).

Personal theft losses — including lost wallets, personal hacks, and romance scams — are now permanently nondeductible unless directly connected to a federally or state-declared disaster.

This is a significant change that eliminates deductions many investors previously assumed they could claim.

However, losses stemming from profit-motivated or investment-related activity may still qualify.

If funds were stolen through an investment fraud scheme, a fraudulent trading platform, or a Ponzi-style crypto project where the operator has been formally charged or a receiver appointed, a theft-loss deduction under IRC §165(c)(2) may be available.

The IRS reaffirmed in March 2025 that such deductions require both a clear profit motive and documented proof that no reasonable prospect of recovery exists.

These losses are reported on Form 4684, Section B, with allowable amounts flowing to Schedule A as itemized deductions — meaning only taxpayers who itemize can benefit.

For exchange bankruptcies, the analysis is different again. Account holders at bankrupt exchanges are typically treated as unsecured creditors rather than owners of specific destroyed property.

This means the loss generally falls under bad debt provisions rather than casualty or theft rules, and must be reported as a short-term capital loss on Form 8949 in the year the debt becomes wholly worthless.

Worthless and Abandoned Tokens

For tokens that have effectively gone to zero but technically still exist on a blockchain, a realization event is still required before a loss can be claimed. If even a nominal market exists for the token, selling it — even for a penny — establishes the realization needed to book the capital loss.

If no liquidity exists at all and the token is permanently discarded by sending it to a burn address, an abandonment loss under Reg 1.165-2 may be available, provided the investment was profit-motivated, the token lost its value, and the abandonment was a deliberate, documented act.

Abandonment losses are reported on Form 4797 as ordinary losses and are not subject to the $3,000 capital-loss limitation — making them potentially more valuable than capital losses for investors in high ordinary income brackets.

Practical Steps to Maximize Your Crypto Loss Deductions

Compile a complete transaction history across all wallets and exchanges for the 2025 tax year.
Use crypto tax software such as Koinly, CoinTracker, or TaxBit to calculate gains and losses under your chosen cost basis method.
Apply HIFO where permitted if your goal is to maximize deductible losses in the current year.
Do not rely solely on your 1099-DA — reconcile it against your own records and flag any discrepancies.
If you experienced theft, exchange failure, or Ponzi-scheme losses, consult a crypto-experienced CPA before claiming deductions, as these require specific documentation and meet complex legal standards.
Answer the digital asset question on Form 1040 honestly and completely.
File Form 8949 for every disposal and carry the totals to Schedule D.
Keep all records for at least six years, as the IRS can audit returns from up to six years prior.

Disclaimer: This article is for informational purposes only and does not constitute tax or legal advice. Tax laws are complex and subject to change. Always consult a qualified tax professional for advice specific to your financial situation.

FAQ

Can you write off crypto losses on taxes?

Yes. Crypto capital losses can offset unlimited capital gains from any asset class and up to $3,000 of ordinary income per year, with excess losses carried forward to future tax years.

How do you report crypto losses to the IRS?

Report every disposal on Form 8949 and carry the totals to Schedule D of Form 1040. Short-term and long-term losses are netted separately before combining overall results.

What is crypto tax loss harvesting?

It is the strategy of deliberately selling crypto at a loss before year-end to offset gains elsewhere. Unlike stocks, crypto is currently not subject to the IRS wash sale rule, so you can repurchase the same token immediately.

Can you deduct losses from crypto theft or scams?

Personal theft losses are now permanently nondeductible under the OBBBA. However, losses from profit-motivated investment fraud may still qualify under IRC §165(c)(2) if properly documented.

Does the cost basis method affect how much loss I can claim?

Yes. HIFO typically produces the largest deductible loss by treating your highest-cost units as sold first. Your chosen method must be applied consistently and supported by detailed records.

Disclaimer: The views expressed belong exclusively to the author and do not reflect the views of this platform. This platform and its affiliates disclaim any responsibility for the accuracy or suitability of the information provided. It is for informational purposes only and not intended as financial or investment advice.

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Disclaimer: The content of this article does not constitute financial or investment advice.

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