Buying cryptocurrency in the USA is legal at the federal level, and the process is roughly the same at every regulated platform: register with an exchange that follows federal anti-money-laundering rules, verify your identity, fund the account from your bank, and place a trade. The complication isn’t the buying. It’s what happens afterward. The IRS treats every digital asset as property, so selling, swapping, or spending it can create a taxable gain, and starting with 2025 transactions your exchange reports much of that activity directly to the government.
What You Need to Open an Account
Every legitimate U.S. cryptocurrency exchange must register with the Financial Crimes Enforcement Network (FinCEN) as a Money Services Business and follow the Bank Secrecy Act’s anti-money-laundering framework.1Financial Crimes Enforcement Network. Advisory on Illicit Activity Involving Convertible Virtual Currency In practice that means every new user goes through a Know Your Customer check before making a single purchase.
Have the following ready:
- Your full legal name, matching your ID exactly. A missing middle name can stall the application.
- Social Security Number or Individual Taxpayer Identification Number, which the exchange uses to file tax forms with the IRS.
- A government-issued photo ID such as a driver’s license or U.S. passport.
- Proof of a physical residential address, usually a recent utility bill, bank statement, or government letter. P.O. Boxes are typically rejected.
- A phone number and email for two-factor authentication and security alerts.
You can check whether a platform is properly registered through FinCEN’s MSB Registrant Search, though FinCEN notes that appearing on the list is not an endorsement.2Financial Crimes Enforcement Network. MSB Registration Web Site The data is updated weekly, and businesses that fail to renew every two years drop off.3Financial Crimes Enforcement Network. Questions and Answers – General Information About the MSB Registrant Search Web Page
Verifying Your Identity
After you enter your personal details, the exchange asks for images of your photo ID, usually both sides. Automated document scanners check for security features like holograms and watermarks in real time. Most platforms also run a biometric liveness check, using your device’s front camera to compare your face to the photo on your ID.
Straightforward applications usually clear within minutes. If anything looks off, a human compliance officer reviews the submission by hand, which can push the wait to several business days. You’ll receive an email once the account is ready to fund.
Funding the Account and Placing a Trade
The most common way to move dollars into a crypto account is an ACH transfer from your bank. You either link the account through a secure integration or type in your routing and account numbers. ACH deposits are typically free but can take a few business days to fully clear before you can withdraw. Wire transfers settle faster and handle larger amounts, at the cost of a fee.
Once your balance shows up, go to the trading screen, choose the asset, and pick an order type. A market order buys at the current price and fills almost instantly. In volatile conditions the price can shift between your click and the fill, a gap called slippage. A limit order lets you set the maximum price you’re willing to pay, and the trade only executes if the market reaches it. Useful for larger purchases or fast-moving days.
After the trade confirms, the platform generates a transaction summary showing the amount of crypto bought, the price paid, and the fees. Save it. That receipt is the foundation of your tax records when you eventually sell.
When Buying Crypto Becomes a Tax Problem
The IRS treats all digital assets as property, not currency.4Internal Revenue Service. Digital Assets That classification drives everything else. Your cost basis is the fair market value on the day you acquired the asset, and any difference between that basis and what you receive when you dispose of it is a capital gain or loss.
Buying crypto with U.S. dollars and holding it does not trigger tax. Neither does moving crypto between wallets you own, unless you pay the transfer fee in crypto, which counts as a disposal.4Internal Revenue Service. Digital Assets The taxable events are:
- Selling crypto for cash. Gain or loss equals the difference between what you paid and what you received.
- Trading one crypto for another. Swapping Bitcoin for Ethereum is treated as selling the Bitcoin at fair market value, and you owe tax on any gain.
- Spending crypto on goods or services. Buying coffee with Bitcoin is technically a disposal, and any appreciation is a taxable gain.
- Receiving crypto as payment. Wages or client payments in crypto are ordinary income at the fair market value on the date received.
- Mining and staking rewards. The IRS has ruled that validation rewards are included in gross income at their fair market value the moment you gain control over them.5Internal Revenue Service. Revenue Ruling 2023-14
The Digital Asset Question on Form 1040
Every federal income tax return now includes a digital asset question asking whether, at any time during the tax year, you received digital assets as a reward, award, or payment, or sold, exchanged, or otherwise disposed of a digital asset or financial interest in one.4Internal Revenue Service. Digital Assets
The IRS guidance for answering it reaches further than the text suggests. Check “Yes” if any of the following happened during the year:6Internal Revenue Service. Determine How to Answer the Digital Asset Question
- You purchased digital assets with U.S. dollars or other currency, even if you did nothing else with them.
- You sold, swapped, or transferred crypto.
- You used crypto to buy goods or services in any amount.
- You had transactions involving stablecoins.
- You gifted or donated digital assets.
- You disposed of an exchange-traded fund that held digital assets.
Only taxpayers with zero digital asset activity for the entire year can check “No.” Checking “Yes” does not by itself mean you owe more tax; it tells the IRS you had some interaction with digital assets.
Reporting Gains and Losses
Short-Term Versus Long-Term
How long you held the asset before selling sets your rate. Hold for one year or less and any gain is short-term, taxed at your ordinary income rate, which can run as high as 37% for top earners. Hold for more than one year and the gain is long-term, taxed at 0%, 15%, or 20% depending on your taxable income.7Internal Revenue Service. Topic No. 409, Capital Gains and Losses The rate gap is large enough that timing sales around the one-year mark is one of the simplest tax moves in crypto.
Forms
You report individual sales on Form 8949, listing the date acquired, date sold, proceeds, cost basis, and resulting gain or loss for each transaction. The totals carry to Schedule D, where you calculate your net capital gain or loss.8Internal Revenue Service. About Form 8949, Sales and Other Dispositions of Capital Assets With dozens of trades this becomes tedious quickly, and active traders often use crypto tax software to generate the 8949 automatically.
Cost Basis Methods
When you’ve bought the same coin at different prices, you need a method for deciding which units you sold. The IRS default is first-in, first-out (FIFO), meaning the oldest units are treated as sold first. FIFO often produces larger gains in a rising market because your earliest purchases had the lowest basis. Specific identification is available if you designate which units you’re selling before the sale, with proper documentation. Highest-in, first-out (HIFO) is another option for native crypto tokens and can reduce your bill when prices have climbed. The average cost method familiar from mutual funds is only available for tokenized funds, not for assets like Bitcoin or Ethereum.
Form 1099-DA and Broker Reporting
For transactions on or after January 1, 2025, crypto brokers must report gross proceeds from sales to the IRS on the new Form 1099-DA.9Internal Revenue Service. Final Regulations and Related IRS Guidance for Reporting by Brokers on Sales and Exchanges of Digital Assets Cost basis reporting begins for transactions on or after January 1, 2026, so your 2026 Form 1099-DA will include both proceeds and basis for covered transactions.
The form includes the digital asset’s name and identifier, the number of units sold, acquisition and sale dates, proceeds, cost basis, and whether the gain or loss is short-term or long-term.10Internal Revenue Service. 2026 Instructions for Form 1099-DA Digital Asset Proceeds From Broker Transactions In earlier years many exchanges provided limited or no tax reporting, and the IRS relied on taxpayers to self-report. Now the agency gets a copy of the same figures you do. If a 1099-DA shows $30,000 in proceeds and that number doesn’t appear anywhere on your return, expect a notice.
The 1099-DA only covers transactions on platforms that qualify as brokers. Decentralized exchanges and peer-to-peer trades remain your responsibility to track and report. The form supplements your record-keeping obligations; it doesn’t replace them.
If You Use a Foreign Exchange
Holding crypto on a foreign-based platform can pull in two extra reporting regimes. FATCA requires U.S. taxpayers to report specified foreign financial assets on Form 8938 when totals exceed thresholds that start at $50,000 for single filers living in the U.S. and rise from there based on filing status and residence.11Internal Revenue Service. Do I Need to File Form 8938, Statement of Specified Foreign Financial Assets Separately, if the combined maximum value of your foreign financial accounts exceeds $10,000 at any point during the year, you must file an FBAR with FinCEN through the BSA E-Filing System.12Financial Crimes Enforcement Network. Reporting Maximum Account Value
FBAR penalties are steep. Civil penalties for non-willful violations can reach over $16,000 per account per year, and willful violations carry penalties up to $165,000 per account per year or 50% of the account balance, whichever is greater.13Internal Revenue Service. Report of Foreign Bank and Financial Accounts (FBAR) Whether crypto on a foreign exchange counts as a reportable foreign account has evolved, but FinCEN has indicated it intends to treat foreign-held crypto accounts as reportable. If you use a foreign platform, filing both forms is the safe approach.
Penalties for Not Reporting
An accuracy-related penalty of 20% applies to any underpayment caused by negligence or a substantial understatement of income. If the IRS finds the underreporting was fraudulent, the penalty jumps to 75% of the unpaid tax. Criminal tax evasion carries up to five years of imprisonment and fines up to $250,000.
The combination of the digital asset question on every Form 1040 and the new 1099-DA reporting gives the IRS a clear paper trail. Tracking every transaction as it happens is far easier than reconstructing years of trades under a notice, and it turns tax season into a formality rather than an emergency.