Selling Crypto: How Capital Gains and Losses Work

Selling crypto might feel like moving numbers on a screen. For tax purposes, it is treated very differently. Under U.S. federal income tax law, cryptocurrency is considered property. That means every sale can trigger tax consequences.

If you sold digital assets this tax year, here’s what you need to know about crypto capital gains and losses.

For a broader overview of crypto tax rules, visit the Bought or Sold Crypto Pillar Page.

When Selling Crypto Is a Taxable Event

The IRS treats virtual currency as property, not cash. Because of that classification, general tax principles that apply to property transactions also apply to cryptocurrency transactions.

A taxable event generally occurs when you sell cryptocurrency for U.S. dollars, exchange one cryptocurrency for another, or use crypto to purchase goods or services.

Source: IRS Notice 2014-21

What Counts as a Sale

A sale occurs when you dispose of crypto assets for cash. This includes:

• Selling Bitcoin on a crypto exchange for USD
• Converting crypto into cash and withdrawing to your bank
• Liquidating digital assets for fiat currency

If you receive proceeds from the transaction, the IRS generally considers that a taxable event.

Why It Is Taxable

Crypto is treated as a capital asset for most individuals. When you sell a capital asset, you must determine whether you have a capital gain or loss.

A capital gain occurs when the amount you receive exceeds your cost basis. A capital loss occurs when the amount you receive is less than your cost basis.

Although crypto feels modern, its tax treatment follows long-standing property rules under federal income tax law.

How to Calculate Crypto Capital Gains

Calculating crypto capital gains is straightforward. It comes down to one formula:

Proceeds − Cost Basis = Capital Gain or Loss

Let’s break that down.

Step 1: Determine Your Proceeds

Proceeds are the fair market value of the crypto you sold.

In most cases, that is the dollar amount credited to you by the crypto exchange at the time of sale. This amount represents your proceeds from digital assets.

The fair market value is generally the crypto's price at the time of sale.

Step 2: Identify Your Cost Basis

Your cost basis is generally what you paid for the cryptocurrency, including certain transaction fees. If you acquired multiple units at different prices, you must use a consistent accounting method such as specific identification or FIFO.

If you bought Bitcoin for $5,000 and later sold it for $8,000, your cost basis is $5,000.

Step 3: Calculate the Gain or Loss

Using the formula:

• $8,000 proceeds
• Minus $5,000 cost basis
• Equals $3,000 capital gain

If instead you sold it for $3,000, you would have a $2,000 capital loss.

That gain or loss becomes part of your total taxable income for the tax year.

Realized Capital Gains

A gain is not taxed until it is realized. That means the taxable event occurs when you sell the asset, not when its value increases on paper.

Unrealized crypto gains do not generally create current tax obligations. Once you sell, however, the gain or loss must be calculated and reported.

If you want more details about how holding periods affect classification, see our guide on Short vs Long Term Crypto Gains. That page explains timing differences without diving into rates here.

What Happens When You Sell Crypto at a Loss

Not every crypto sale results in a profit. If you sell cryptocurrency for less than your cost basis, you realize a capital loss.

What Is a Crypto Capital Loss

A crypto capital loss occurs when your proceeds are lower than what you originally paid.

Example:

• You purchased crypto assets for $10,000
• You later sold them for $6,000
• You realized a $4,000 capital loss

How Losses Are Treated

Capital losses may offset other capital gains in the same tax year. If you have other capital gains, those losses can reduce your overall tax burden.

If your capital losses exceed your capital gains, you can generally deduct up to $3,000 per year ($1,500 if Married Filing Separately) against other income. Any remaining loss carries forward to future tax years. The treatment depends on your total taxable income and overall tax situation.

The key takeaway is this: losses still matter. Even though you may not owe capital gains tax, the transaction must still be reported.

Accurate tracking of gains and losses is essential for proper reporting. Many taxpayers use crypto tax software or tax preparation software to calculate crypto gains and maintain records, especially when multiple cryptocurrency transactions are involved.

Source: IRS Pub. 550, Capital Losses

Crypto Tax-Loss Harvesting: No Wash Sale Rule

One of the biggest tax advantages of crypto over stocks: the wash sale rule (IRC §1091) does not currently apply to cryptocurrency.

The wash sale rule prevents stock investors from claiming a loss if they repurchase the same security within 30 days. But because the IRS classifies crypto as property (not stock or securities), this rule doesn't apply to most spot crypto transactions.

What this means: You can sell Bitcoin at a loss on Monday, buy it back on Tuesday, and still claim the full capital loss on your tax return. This makes crypto tax-loss harvesting significantly more flexible than stock tax-loss harvesting.

Exceptions and cautions:

• Spot Bitcoin/Ether ETFs (like BlackRock's IBIT or Fidelity's FBTC) ARE securities. Wash sale rules apply to ETF shares.
• Congress has repeatedly proposed extending wash sale rules to digital assets. No legislation has passed as of 2026, but the Form 1099-DA already includes a wash sale disallowed loss box (Box 1i) — the infrastructure is in place.
• Conservative approach: Some investors voluntarily wait 30 days before rebuying the same coin, or rotate into correlated tokens, to reduce future risk if rules change.

For full wash sale mechanics, see our Wash Sale Rule guide.

For the general tax-loss harvesting strategy, see our Tax-Loss Harvesting guide.

Why You Must Report Every Crypto Sale

Even if you did not realize a gain, you must still report the sale.

Cryptocurrency Tax Reporting Obligations

The IRS asks about virtual currency activity directly on Form 1040. If you sold crypto during the tax year, you generally must indicate that activity on your tax return.

Example: If you bought crypto in 2022 and sold it in 2025, you report the sale in the 2025 tax year.

Capital gains and losses from crypto sales are reported on Form 8949 and summarized on Schedule D (Form 1040). The 2025 Form 1040 also includes a digital asset question requiring disclosure of certain crypto activity.

Even if you did not receive a tax form from your crypto exchange, you are still responsible for accurate cryptocurrency tax reporting. Third-party reporting does not replace your own recordkeeping obligations.

Why Records Matter

You should keep:

• Purchase dates
• Purchase prices
• Sale dates
• Sale amounts
• Transaction fees

Without accurate records, it becomes difficult to calculate capital gains taxes correctly. That can increase your risk of reporting errors or unexpected tax consequences.

The IRS position is clear that cryptocurrency transactions are subject to federal income tax. Failing to report taxable gains may result in additional tax, penalties, or interest.

Good recordkeeping is not exciting. But it makes tax season far less stressful.

How Selling Crypto Affects Your Taxable Income

Selling crypto capital gains can affect your broader income tax situation.

Short-term capital gains are generally taxed at ordinary income tax rates. Long-term capital gains may qualify for preferential rates, depending on your taxable income.

If you have capital losses, they may offset other capital gains. In some cases, they may reduce taxable income more broadly, subject to IRS limitations.

The exact impact depends on your complete financial picture, including:

• Other capital gains
• Ordinary income
• Self-employment income
• Charitable contributions
• Filing status

Because cryptocurrency taxes can intersect with multiple parts of your return, some taxpayers consult a tax professional or tax advisor to ensure compliance.

The goal is clarity, not guesswork.

Source: IRS Pub. 550, Capital Gains and Losses

Net Investment Income Tax (NIIT) on Crypto Gains

High earners may owe an additional 3.8% Net Investment Income Tax on crypto capital gains when Modified Adjusted Gross Income (MAGI) exceeds:

• $200,000 (single, head of household)
• $250,000 (married filing jointly)
• $125,000 (married filing separately)

The 3.8% applies to the lesser of net investment income or the MAGI overage.

Example: You're single with 240,000 MAGI and 30,000 of crypto capital gains. NIIT applies to the lesser of 30,000 (NII) or 40,000 (MAGI overage) = 30,000 × 3.8% = 1,140 additional tax.

For complete NIIT mechanics and calculation examples, see our Capital Gains Tax on Stocks guide.

Final Thoughts on Selling Crypto Capital Gains

Selling crypto is not just a financial decision. It is a tax event.

If you sell digital assets for more than you paid, you may owe capital gains tax. If you sell for less than you paid, you may realize a capital loss. Either way, the transaction must be reported.

Understanding how cost basis, fair market value, and proceeds interact makes calculating crypto capital gains much less intimidating.

Crypto may be new. Property tax rules are not.

And when tax season rolls around, clarity beats confusion every time.

For a full overview of cryptocurrency taxes, explore the main Bought or Sold Crypto guide.