Exchanging currency for profit is legal in the United States, but the rules that apply to you depend entirely on whether you’re trading for your own account or exchanging money on behalf of other people. Buy euros through a U.S. brokerage and sell them later at a gain, and the only real obligation is paying tax on the profit. Set up shop exchanging currency for customers, whether in a storefront, online, or informally among contacts, and you land inside a federal and state licensing regime with criminal penalties for getting it wrong.
Trading for Yourself vs. Exchanging for Others
This is the line that decides which rules apply. Federal regulations define a “dealer in foreign exchange” as anyone who accepts one country’s currency in exchange for another’s in amounts greater than $1,000 for any other person on any day.1eCFR. 31 CFR 1010.100 Cross that threshold as a business activity for other people and you’re a Money Services Business, with everything that follows.
Buying foreign currency as a personal investment, or trading forex through a regulated broker, doesn’t put you in that category. The broker is the regulated entity. Federal regulations also carve out an explicit exemption for individuals who exchange currency on an infrequent basis and not for profit,1eCFR. 31 CFR 1010.100 so a traveler swapping vacation money back to dollars isn’t breaking any law. The Commodity Futures Trading Commission oversees retail forex, and its registration rules fall on the entities that facilitate your trades, not on you as an individual trader.2eCFR. 17 CFR 5.3 – Registration of Persons Engaged in Retail Forex Transactions A counterparty to off-exchange forex transactions with retail customers must register as a Retail Foreign Exchange Dealer with the CFTC and belong to the National Futures Association.3National Futures Association. Retail Foreign Exchange Dealer (RFED) Registration Trade through a properly registered U.S. broker and you’re on solid legal ground.
How Personal Forex Profits Are Taxed
If you’re profiting on your own account, the legal question shifts from licensing to the IRS. The rules aren’t intuitive, and picking the wrong treatment costs money.
Section 988 Is the Default
Under Section 988 of the Internal Revenue Code, gains and losses from foreign currency transactions are treated as ordinary income or loss by default.4Office of the Law Revision Counsel. 26 USC 988 – Treatment of Certain Foreign Currency Transactions That covers most spot forex trades. Ordinary rates are usually higher than long-term capital gains rates, so profitable traders pay more. The trade-off is that losses can offset other ordinary income without the $3,000 annual cap that applies to net capital losses.
Section 1256 and the 60/40 Election
Certain forex contracts that qualify as Section 1256 contracts get better treatment: 60% of the gain is taxed as long-term capital gain and 40% as short-term, regardless of how long you held it. To qualify, a foreign currency contract must require delivery of or settlement based on a foreign currency traded through regulated futures contracts, and it must be traded in the interbank market.5Office of the Law Revision Counsel. 26 USC 1256 – Section 1256 Contracts Marked to Market Taxpayers can also elect out of default Section 988 treatment for forward contracts, futures, and certain options, treating the gains as capital gains instead. That election has to be made before the close of the day the transaction is entered.4Office of the Law Revision Counsel. 26 USC 988 – Treatment of Certain Foreign Currency Transactions
FBAR if You Hold Currency Abroad
Holding foreign currency in accounts outside the United States pulls in a separate filing. If the combined value of all your foreign financial accounts exceeds $10,000 at any point during the year, you must file FinCEN Form 114, the FBAR, by April 15 of the following year, with an automatic extension to October 15.6FinCEN.gov. Report Foreign Bank and Financial Accounts Penalties are steep: up to $16,536 per report for non-willful violations, and the greater of $165,353 or 50% of the account balance for willful ones. Criminal penalties can reach $250,000 in fines and five years in prison. Traders who keep balances with foreign brokers or banks are the ones who tend to miss this.
What the Law Requires If You Exchange for Others
Once you start exchanging currency for customers, the rules multiply. A business that does this must register with the Financial Crimes Enforcement Network as a Money Services Business, no matter what state licenses it also holds.7eCFR. 31 CFR 1022.380 – Registration of Money Services Businesses Registration has to be renewed every two years.8FinCEN.gov. Money Services Business (MSB) Registration
Most states then require a separate money transmitter license, each with its own application, background checks on key personnel, minimum net worth rules, and surety bond. Amounts and fees vary by state. Operating across multiple states means a license in each, with separate renewal deadlines.
The Anti-Money Laundering Program
Every registered MSB must run a written anti-money laundering program.9FinCEN.gov. BSA Requirements for MSBs Under the Bank Secrecy Act, that means internal controls, employee training, independent testing, a designated compliance officer, customer due diligence, transaction monitoring, and reporting when something looks wrong. Cash transactions above $10,000 in a single day trigger a Currency Transaction Report.10Financial Crimes Enforcement Network. The Bank Secrecy Act Records must be kept for five years and stored so they’re reasonably accessible.11eCFR. 31 CFR 1010.430 A paper program that isn’t actually operating won’t survive a regulatory exam.
Structuring Is Its Own Federal Crime
Breaking transactions into smaller amounts to slip under the $10,000 reporting threshold is prohibited, even when the underlying money is entirely legitimate.12Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited A customer who makes four $3,000 exchanges in a day, or a business that helps structure a transaction to stay below the threshold, can be prosecuted. Assuming that only large or obviously suspicious transactions cause problems is how people get charged.
Peer-to-Peer and Informal Exchange
This is where profit-seeking individuals get into trouble without a storefront in sight. Regularly exchanging currency for friends, community members, or contacts through social media or messaging apps looks the same to federal regulators as running an exchange business. FinCEN’s guidance defines a currency dealer or exchanger as anyone who exchanges currency as a business for others in amounts over $1,000 per day.13FinCEN.gov. Whether a Foreign Exchange Dealer is a Currency Dealer or Exchanger No formal entity, physical location, or heavy profit motive is required at that threshold for non-exempt persons.
People running this kind of activity risk federal prosecution under 18 U.S.C. § 1960 for unlicensed money transmission.14Office of the Law Revision Counsel. 18 USC 1960 – Prohibition of Unlicensed Money Transmitting Businesses Charging a fair rate and dealing with people you personally know is not a defense. Cases involving countries tied to money laundering or sanctions concerns get attention faster.
Penalties for Getting It Wrong
The consequences scale quickly from civil fines to prison time.
Failing to register as an MSB with FinCEN carries a civil penalty of up to $5,000 for each day the violation continues.15Financial Crimes Enforcement Network. Enforcement Actions for Failure to Register as a Money Services Business An unregistered operation running for months easily accumulates six-figure exposure before anyone shows up.
Operating an unlicensed money transmitting business is a federal felony carrying up to five years in prison and fines. Under 18 U.S.C. § 1960, you can be convicted for operating without the required state license whether or not you knew a license was necessary.14Office of the Law Revision Counsel. 18 USC 1960 – Prohibition of Unlicensed Money Transmitting Businesses That surprises people who assumed ignorance would matter.
Willful Bank Secrecy Act violations carry fines up to $250,000 and imprisonment up to five years. When the violation is part of a pattern of illegal activity involving more than $100,000 in a twelve-month period, the maximums double to $500,000 and ten years. Courts can also order forfeiture of profits.16Office of the Law Revision Counsel. 31 USC 5322 – Criminal Penalties