Does Converting Crypto on Coinbase Get Taxed?

Converting crypto on Coinbase is taxed by the IRS as a sale, even though you never touched dollars. Swapping Bitcoin for Ethereum, Ethereum for USDC, or any other pair counts as disposing of the first asset and acquiring the second, and any gain in value since you bought the first asset is taxable in the year the conversion happens.

Why a Swap Counts as a Sale

The IRS treats virtual currency as property, not currency, under Notice 2014-21.¹ Trading one property for another is a disposal, and disposals trigger capital gains or losses measured in U.S. dollars at the moment of the trade.²

Some traders assume a crypto swap qualifies as a tax-free “like-kind exchange.” It does not. The Tax Cuts and Jobs Act of 2017 limited like-kind treatment to real property, so digital assets are excluded.³ The rule is the same whether the conversion happens on Coinbase, another centralized exchange, or through a decentralized protocol.

How to Calculate the Gain or Loss

Your gain or loss is the fair market value of what you received at conversion (the proceeds) minus what you originally paid for the asset you gave up (the cost basis). Cost basis includes the purchase price plus any acquisition fees.²

An example: you bought $3,000 of Bitcoin and paid a $30 Coinbase fee, so your basis is $3,030. Later you convert that Bitcoin to Ethereum when the Bitcoin is worth $5,000. Your taxable gain is $1,970. Fees you pay at the moment of conversion effectively reduce your proceeds, which reduces the gain, so keep track of fees on both ends.

Short-Term Versus Long-Term Rates

How long you held the original asset decides the rate. If you held it a year or less, the gain is short-term and taxed at ordinary income rates, which run from 10 percent to 37 percent for 2026 depending on your total taxable income.⁴ Most active-trader conversions land here.

If you held for more than a year, the gain is long-term. For 2026 the rate is 0, 15, or 20 percent depending on filing status and income.⁵ Holding an extra day past the one-year mark before converting can meaningfully cut what you owe.

Choosing Which Units You Sold

If you bought the same coin at different prices, you need a method for deciding which units left your account in the conversion. The default is first in, first out. Starting in 2026, brokers such as Coinbase apply FIFO on a wallet-by-wallet basis when reporting your basis to the IRS unless you elect otherwise.⁶

The alternative is specific identification. To use it, you must be able to show the date and time each unit was acquired, the price paid, and the value at disposal, and you must make the choice at or before the moment of conversion.² Specific identification can lower your gain by selecting higher-basis units, or lock in long-term treatment for units past the one-year mark.

Stablecoin and Wrapped-Token Conversions

Converting Bitcoin or Ethereum to a stablecoin like USDC or USDT is not a workaround. The IRS lists stablecoins as digital assets, and a swap into a stablecoin is treated the same as a swap into any other token.⁷ The gain or loss is realized the moment the trade executes.

Wrapping a token (ETH to WETH, for example) is unsettled. The IRS has not issued definitive guidance, and Notice 2024-57 temporarily exempts brokers from reporting wrap and unwrap transactions on Form 1099-DA pending further Treasury rules.⁷ Absent guidance, keep records of these transactions in case they are later treated as taxable.

Losses Offset Gains

Conversions that lose money matter just as much on the return. A capital loss from a losing conversion offsets capital gains from your other trades and investments. When losses exceed gains for the year, you can apply up to $3,000 of the excess against ordinary income ($1,500 if married filing separately).⁵ Any remaining loss carries forward indefinitely, keeping its short- or long-term character.

Cryptocurrency is currently outside the wash sale rule that applies to stocks, so you can sell at a loss and repurchase the same token immediately without losing the deduction. Bills to extend the wash sale rule to digital assets have been introduced but were not enacted as of 2026.

The Extra 3.8 Percent for Higher Incomes

If your income is high enough, a 3.8 percent net investment income tax stacks on top of the regular capital gains rate.⁸ It applies to the lesser of your net investment income or the amount your modified adjusted gross income exceeds these thresholds:⁹

$250,000 for married filing jointly or qualifying surviving spouse
$200,000 for single or head of household
$125,000 for married filing separately

The thresholds are set by statute and do not adjust for inflation. A single filer earning $180,000 in salary with $50,000 in conversion gains has $230,000 of modified adjusted gross income; the NIIT applies to the $30,000 above the $200,000 threshold, adding $1,140.

What Coinbase Tells the IRS

For tax year 2025, Coinbase reports gross proceeds from digital asset sales and conversions to the IRS on Form 1099-DA.¹⁰ For 2026, cost basis will also appear for covered assets, meaning assets acquired on or after January 1, 2025, and held in Coinbase custody.⁷ Staking rewards, referral bonuses, and similar incentives above $600 may show up on a Form 1099-MISC.

If you moved crypto into Coinbase from an outside wallet or another exchange, Coinbase may not know what you originally paid. The basis field on your 1099-DA may be blank or wrong, and reconstructing it from your own records is your responsibility. Reconcile the Coinbase Tax Center reports against your personal transaction history before filing.

Keep the underlying records. The IRS generally has three years to audit a return, extending to six if you omit more than 25 percent of gross income.¹¹ Because crypto basis can affect returns for years when losses carry forward, holding CSV exports, wallet logs, and transaction histories for at least six years is a safer approach.

How to Report It on Your Return

Each conversion is a separate line on Form 8949. For each one, enter the acquisition date, the conversion date, the proceeds (fair market value at conversion), and the cost basis, with short-term and long-term transactions in their own sections.¹² The totals move onto Schedule D of Form 1040, where net short- and long-term amounts combine into your overall capital gain or loss.¹³ Most tax software imports a Coinbase CSV directly, which matters if you have dozens or hundreds of conversions.

Form 1040 has a digital asset question near the top asking whether you received, sold, exchanged, or otherwise disposed of any digital asset during the year. Any Coinbase conversion means you answer yes.¹⁴ That answer is under penalty of perjury with the rest of the return.

For tax year 2025, the filing deadline is April 15, 2026. An extension gives you until October 15, 2026, to file, but any tax owed is still due April 15.¹⁵

Quarterly Estimated Payments for Active Traders

If your conversion gains will leave you owing $1,000 or more at filing, quarterly estimated payments may be required to avoid an underpayment penalty. Due dates for each tax year are:

April 15 for income earned January through March
June 15 for income earned April through May
September 15 for income earned June through August
January 15 of the following year for income earned September through December

You can avoid the penalty by paying at least 90 percent of the current year’s tax or 100 percent of the prior year’s tax, whichever is smaller. If your prior-year adjusted gross income was above $150,000, the prior-year safe harbor rises to 110 percent.¹⁶

What Happens If You Do Not Report

The accuracy-related penalty under Section 6662 adds 20 percent to any underpayment caused by a substantial understatement of tax, defined generally as being off by the greater of 10 percent of the correct tax or $5,000.¹⁷

Willful failure to file or supply required information is a misdemeanor carrying fines up to $25,000 and up to a year in prison.¹⁸ Answering no to the Form 1040 digital asset question with unreported conversions on file could invite perjury or evasion exposure on top. With Coinbase now reporting directly on Form 1099-DA, the IRS has a straightforward way to check the numbers on your return against the ones on your account.

State Tax Adds to the Bill

Federal tax is not the end of it. Most states tax capital gains as ordinary income, with top rates from 0 percent in no-income-tax states to over 13 percent in the highest. A short-term conversion in a high-tax state, combined with federal ordinary rates and the NIIT, can push your combined rate past 40 percent. Check your state’s rules before assuming the federal calculation is the full picture.

1
Internal Revenue Service. Notice 2014-21
2
Internal Revenue Service. Frequently Asked Questions on Virtual Currency Transactions
3
Internal Revenue Service. Like-Kind Exchanges – Real Estate Tax Tips
4
Internal Revenue Service. IRS Releases Tax Inflation Adjustments for Tax Year 2026
5
Internal Revenue Service. Topic No. 409, Capital Gains and Losses
6
Internal Revenue Service. Frequently Asked Questions on Virtual Currency Transactions
7
Internal Revenue Service. Digital Assets
8
Internal Revenue Service. Questions and Answers on the Net Investment Income Tax
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Internal Revenue Service. Topic No. 559, Net Investment Income Tax
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Internal Revenue Service. About Form 1099-DA, Digital Asset Proceeds From Broker Transactions
11
Internal Revenue Service. How Long Should I Keep Records
12
Internal Revenue Service. Instructions for Form 8949 (2025)
13
Internal Revenue Service. Instructions for Schedule D (Form 1040) (2025)
14
Internal Revenue Service. Determine How to Answer the Digital Asset Question
15
Internal Revenue Service. IRS Opens 2026 Filing Season
16
Internal Revenue Service. Internal Revenue Bulletin 2026-02
17
Office of the Law Revision Counsel. 26 USC 6662 – Imposition of Accuracy-Related Penalty on Underpayments
18
Office of the Law Revision Counsel. 26 USC 7203 – Willful Failure to File Return, Supply Information, or Pay Tax