Exchanging currency for profit is not illegal in the United States, but doing it without the right licenses, registrations, and tax filings absolutely is.
Most people picture a forex trader at a desk or a currency kiosk at an airport. The reality is that currency exchange for profit covers everything from professional forex brokers to a neighbor charging a fee to swap dollars for pesos. Each scenario carries its own legal requirements, and getting them wrong can mean federal criminal charges.
The most common misconception is that small-scale or informal currency exchange falls outside the law. It does not. Federal statutes define money transmission broadly, and operating without proper registration is a felony under 18 U.S.C. Section 1960.
This article covers when currency exchange becomes illegal, what licenses you need, what taxes apply, and what the real penalties look like in 2026.
Is It Illegal to Exchange Currency for Profit
Exchanging currency for profit is not inherently illegal in the US, but it becomes illegal when done without proper federal registration, state licensing, or required tax reporting.
The activity itself, buying one currency and selling another at a profit, is a legal commercial transaction. Banks do it every day. Currency kiosks at airports do it legally. Individual forex traders do it through regulated platforms. The law does not prohibit profit from currency exchange. What the law prohibits is doing it without compliance with a layered set of federal and state requirements.
The key legal framework comes from the Bank Secrecy Act, the federal money transmission laws under 31 U.S.C. Section 5330, and the criminal statute at 18 U.S.C. Section 1960. Together, these laws require that anyone who exchanges currency as a business, even a very small one, must register with FinCEN as a Money Services Business (MSB) and comply with state licensing requirements.
Quick Facts:
- Currency exchange for profit: Legal with proper compliance
- Without FinCEN registration: Federal felony under 18 U.S.C. Section 1960
- Without state money transmitter license: State criminal charge
- Without IRS reporting: Tax fraud exposure
- Individual forex trading through regulated broker: Generally legal without separate MSB license
The line between legal and illegal is not drawn at the amount of profit. It is drawn at whether you meet the definition of a money services business and whether you have complied with all required registrations.
Is Private Currency Exchange Legal in the US
Private currency exchange between individuals is legal in the US when it is truly a one-time or casual transaction, but it crosses into regulated territory when it becomes a regular, fee-based service.
The law uses the concept of “business” to draw the line. A traveler who exchanges leftover euros with a friend at the airport is not running a money services business. But a person who regularly exchanges currency for others and charges a fee or takes a spread is conducting a money transmission business under federal law, regardless of whether they have a storefront or a business license.
FinCEN’s guidance makes this distinction in its definition of a currency dealer or exchanger. Any person who exchanges currency as a business, meaning with some regularity and for profit, falls under the MSB definition at 31 C.F.R. Section 1010.100(ff). That classification triggers mandatory federal registration requirements.
The legal test for private currency exchange:
| Factor | Casual Exchange | Regulated Business Activity |
|---|---|---|
| Frequency | One-time or rare | Regular or habitual |
| Fee or spread charged | No | Yes |
| Volume | Minimal | Substantial |
| Number of customers | One person, one time | Multiple people or recurring |
| Intent | Personal convenience | Profit motive |
The practical risk for private individuals is that the line between “helping a friend” and “running an unlicensed money service” is thinner than most people think. Charging even a small fee for regular currency swaps pushes squarely into regulated territory.
Can Individuals Exchange Currency for Profit Legally
Yes, individuals can legally exchange currency for profit in the US, but only if they comply with federal MSB registration, applicable state licensing, and IRS tax reporting requirements.
There is no law that limits currency exchange for profit to banks or large institutions. An individual entrepreneur can legally operate a currency exchange business. The barrier to entry is regulatory compliance, not legal prohibition. Individual forex traders who operate through CFTC-registered brokers are also engaging in legal currency exchange for profit, typically without needing their own separate MSB registration.
The type of activity determines the compliance pathway. A person trading currencies through a registered forex broker for their own account is operating under a different legal framework than a person who accepts cash from customers and exchanges it into foreign currency for a fee.
Two legal pathways for individuals:
- Individual forex trading through a CFTC-registered broker: Generally legal; the broker handles regulatory compliance; trader pays taxes on gains
- Operating a currency exchange service for customers: Requires FinCEN MSB registration, state money transmitter license, AML program, and IRS reporting
The second pathway is where most legal trouble happens. People set up informal currency exchange operations, particularly in immigrant communities or among travelers, without understanding that they are legally operating an MSB and subject to federal and state oversight.
Key Takeaway: Currency exchange for profit is legal for individuals in the US, but the moment it becomes a regular, fee-based service for others, federal MSB registration and state licensing requirements apply, and ignoring them is a federal felony.
Is Forex Trading Legal for Individuals in the US
Forex trading is legal for individual traders in the US when conducted through a broker registered with the Commodity Futures Trading Commission and a member of the National Futures Association.
The US has specific rules for retail forex trading that differ from many other countries. Under the Commodity Exchange Act and CFTC regulations, retail forex brokers must be registered as Retail Foreign Exchange Dealers (RFEDs) or Futures Commission Merchants (FCMs) with the CFTC. Individual traders do not need their own license; they trade through the licensed broker’s platform.
What is not legal for US individual traders is using an unregistered offshore forex broker to trade currencies. The CFTC has specifically warned about offshore brokers that solicit US customers without proper registration. Using such a broker does not automatically make the individual trader a criminal, but it creates significant legal and financial risk, including the inability to recover funds through US regulatory channels.
| Forex Trading Scenario | Legal Status | Regulatory Body |
|---|---|---|
| Trading through CFTC-registered US broker | Legal | CFTC and NFA |
| Trading through NFA-member broker | Legal | NFA |
| Using unregistered offshore broker | Legally risky | No US protection |
| Operating your own forex dealing business | Requires RFED registration | CFTC |
| Retail forex leverage in US | Capped at 50:1 major pairs | CFTC Rule 5.18 |
Individual forex traders pay taxes on their gains and losses under IRC Section 988 for spot transactions, treating gains as ordinary income. They also have the option to elect Section 1256 treatment in some circumstances, which provides a more favorable 60/40 capital gains split.
Is Peer-to-Peer Currency Exchange Legal
Peer-to-peer currency exchange is legal when it is a genuinely informal, one-time transaction, but it becomes illegal unlicensed money transmission the moment it takes on the characteristics of a regular, fee-based service.
Peer-to-peer currency exchange platforms, apps or websites that match individuals who want to exchange currencies directly with each other, operate in a complex legal space. The platform itself almost certainly qualifies as an MSB and must be FinCEN-registered and state-licensed. The individual users making exchanges through a properly licensed platform are generally not considered to be operating MSBs themselves.
The legal issue arises when individuals set up their own informal P2P exchange systems outside of licensed platforms. A person who posts on social media offering to exchange dollars for foreign currency at competitive rates, collects cash from multiple customers, and sends money overseas is running an unlicensed money transmission operation under federal law.
Quick Facts on P2P currency exchange legality:
- One-time swap with a friend: Legal, no registration needed
- Using a licensed P2P exchange platform: Legal; platform holds the license
- Operating your own P2P matching service for profit: MSB registration required
- Informal networks exchanging cash across borders: High risk; money transmission and AML laws apply
- Hawala-style informal networks: Federally illegal without FinCEN registration; heavily monitored by law enforcement
Law enforcement, including the DEA, FBI, and FinCEN, actively monitors informal P2P currency networks because they are commonly used for money laundering and sanctions evasion.
Do You Need a License to Exchange Currency for Profit
Yes, anyone who exchanges currency for profit as a business in the US needs to register with FinCEN as a Money Services Business and obtain a money transmitter license in every state where they operate.
The federal requirement comes from 31 U.S.C. Section 5330, which requires all MSBs to register with FinCEN within 180 days of beginning operations. The registration is done through FinCEN’s BSA E-Filing System. Registration is not a license; it is a mandatory federal registration. It does not authorize operation without complying with applicable state licensing requirements on top.
State licensing is a separate and parallel requirement. Most states require money transmitters to obtain a state license through the state banking or financial regulation department. Some states, like New York and California, have particularly demanding licensing requirements with substantial net worth, bonding, and examination requirements.
Federal and state licensing overview:
| Requirement | Governing Body | Statute | Applies To |
|---|---|---|---|
| FinCEN MSB Registration | FinCEN | 31 U.S.C. Section 5330 | All currency exchange businesses |
| Anti-Money Laundering Program | FinCEN | 31 C.F.R. Section 1022.210 | All MSBs |
| State Money Transmitter License | State banking regulator | Varies by state | Most states; varies |
| Currency Transaction Reports | FinCEN | 31 U.S.C. Section 5313 | Transactions over $10,000 |
| Suspicious Activity Reports | FinCEN | 31 U.S.C. Section 5318 | Suspicious transactions |
Think of the compliance system like getting a contractor’s license. You need both the federal tax ID and the state contractor’s license. Having one without the other does not make you legal. The same principle applies to currency exchange.
FinCEN MSB Registration Requirements for Currency Exchange
FinCEN MSB registration is mandatory for any person or business that exchanges currency as a business in the United States, and the registration must be completed before or within 180 days of beginning operations.
The registration is completed through FinCEN’s BSA E-Filing System using FinCEN Form 107 (Registration of Money Services Business). The registration costs nothing in federal fees, but it triggers a full set of ongoing compliance obligations. Once registered, an MSB must maintain a written anti-money laundering (AML) program, file Currency Transaction Reports (CTRs) for transactions over $10,000, file Suspicious Activity Reports (SARs) when warranted, and keep specific records of transactions and customer identification.
FinCEN defines a currency dealer or exchanger at 31 C.F.R. Section 1010.100(ff)(1) as a person who exchanges currency for others as a business. The threshold that distinguishes a regulated business from a casual exchanger is more than $1,000 in currency exchange transactions per person per day.
FinCEN MSB registration requirements for currency exchangers:
- Register via FinCEN Form 107 within 180 days of starting
- Renew registration every two years
- Designate a compliance officer
- Implement a written AML program
- Train employees on AML procedures
- File CTRs for cash transactions over $10,000
- File SARs for suspicious transactions over $5,000
- Maintain transaction records for five years
- Verify customer identity for transactions over $3,000
Failure to register carries civil penalties up to $5,000 per day of non-registration and criminal penalties of up to five years in federal prison under 31 U.S.C. Section 5330.
State Money Transmitter License Requirements
Most US states require a separate money transmitter license to legally operate a currency exchange business, and these state requirements exist entirely apart from the federal FinCEN registration.
The state licensing landscape is fragmented. Each state sets its own requirements, fees, net worth minimums, and surety bond amounts. Some states, like Montana and South Carolina, have minimal money transmitter licensing requirements. Others, like New York and California, impose some of the most demanding financial services licensing regimes in the country.
New York’s BitLicense and money transmitter framework, administered by the New York Department of Financial Services (NYDFS), requires applicants to demonstrate significant financial resources, pass extensive background checks, and submit to ongoing regulatory examination. California’s money transmission license, administered by the Department of Financial Protection and Innovation (DFPI), requires a surety bond, minimum net worth, and detailed business plan submission.
| State | Licensing Body | Minimum Net Worth | Surety Bond | Exam Required |
|---|---|---|---|---|
| New York | NYDFS | Substantial; case-by-case | Required | Yes |
| California | DFPI | $500,000 minimum | $250,000+ | Yes |
| Texas | Texas DOB | $500,000 minimum | Required | Yes |
| Florida | OFR | $100,000 minimum | $50,000 minimum | Yes |
| Montana | State Banking | Minimal requirements | Small bond | No |
Operating in a state without the required money transmitter license while conducting currency exchange for profit is a state criminal offense in most states, often charged as a felony alongside the federal charge.
Key Takeaway: Currency exchange businesses face a dual licensing burden: federal FinCEN MSB registration and individual state money transmitter licenses for each state of operation, with New York and California being among the most demanding jurisdictions.
Unlicensed Money Transmission Laws and Penalties
Operating an unlicensed money transmission business, including an unlicensed currency exchange operation, is a federal felony under 18 U.S.C. Section 1960.
Section 1960 of Title 18 of the US Code makes it a federal crime to knowingly conduct, control, manage, supervise, direct, or own an unlicensed money transmitting business. The law applies to businesses that fail to comply with federal or state licensing requirements. It does not require the government to prove that the money was connected to any other crime. Operating without a license is itself the crime.
The law covers three situations: businesses that fail to register with FinCEN as required, businesses that operate without required state licenses, and businesses that transmit funds they know were derived from criminal activity. The first two categories are pure licensing violations that carry serious federal penalties regardless of whether any other illegal activity is involved.
Elements of an 18 U.S.C. Section 1960 violation:
- Conducting, controlling, managing, or owning a money transmitting business
- Without complying with federal or state registration or licensing requirements
- Knowingly (awareness of the licensing requirement is not required; operating the business is sufficient)
Federal courts have consistently held that ignorance of the licensing requirement is not a defense to Section 1960 charges. Running the unlicensed operation is enough.
Penalty for Unlicensed Currency Exchange
The federal penalty for unlicensed currency exchange under 18 U.S.C. Section 1960 is up to five years in federal prison per count, plus forfeiture of all funds involved in the unlicensed operation.
This is not a fine and a slap on the wrist. Federal prosecutors treat unlicensed money transmission seriously, particularly when the operation involves large volumes of transactions. The five-year maximum applies per count, and prosecutors can charge multiple counts for a course of conduct, potentially stacking years of exposure.
Civil penalties from FinCEN for failure to register as an MSB reach up to $5,000 per day of non-compliance under 31 U.S.C. Section 5330. For violations of the Bank Secrecy Act, including failure to file required CTRs or SARs, civil penalties can reach $25,000 per day per violation or the amount of the transaction, whichever is greater.
| Violation | Statute | Maximum Criminal Penalty | Civil Penalty |
|---|---|---|---|
| Operating unlicensed money transmission business | 18 U.S.C. Section 1960 | 5 years federal prison per count | Not applicable |
| Failure to register as MSB | 31 U.S.C. Section 5330 | 5 years federal prison | Up to $5,000 per day |
| Failure to file CTR | 31 U.S.C. Section 5322 | 5 years federal prison | Up to $25,000 per violation |
| Willful failure to file CTR | 31 U.S.C. Section 5322(b) | 10 years federal prison | Higher civil penalties |
| Structuring to avoid CTR | 31 U.S.C. Section 5324 | 5 years federal prison | Forfeiture of funds |
Forfeiture is a particularly damaging consequence. All funds connected to the unlicensed operation can be seized and forfeited to the federal government, regardless of whether the money was earned illegally in any other sense.
Criminal Penalty for Illegal Currency Exchange
The criminal penalties for illegal currency exchange extend beyond the unlicensed transmission charge to include money laundering, tax evasion, and structuring charges, each carrying their own substantial federal prison exposure.
Money laundering under 18 U.S.C. Section 1956 carries a maximum of 20 years in federal prison and applies when a person knows that money being transmitted represents proceeds of unlawful activity. An unlicensed currency exchanger who handles money connected to drug trafficking, fraud, or other crimes can face money laundering charges on top of the Section 1960 unlicensed transmission charge.
Structuring, covered under 31 U.S.C. Section 5324, is the practice of breaking transactions into amounts below $10,000 to avoid triggering CTR filing requirements. Structuring carries up to five years in federal prison and mandatory forfeiture of the structured funds. Federal prosecutors regularly add structuring charges to currency exchange cases.
Criminal charges commonly paired with illegal currency exchange:
- 18 U.S.C. Section 1960: Unlicensed money transmission (5 years per count)
- 18 U.S.C. Section 1956: Money laundering (up to 20 years)
- 31 U.S.C. Section 5324: Structuring (up to 5 years)
- 26 U.S.C. Section 7201: Tax evasion (up to 5 years)
- 18 U.S.C. Section 1343: Wire fraud, if applicable (up to 20 years)
A single enforcement action targeting an illegal currency exchange operation can result in multiple charges, exponentially stacking potential prison time.
Key Takeaway: Illegal currency exchange is not a victimless paperwork violation. Federal prosecutors routinely combine unlicensed transmission, money laundering, structuring, and tax evasion charges into a single case, creating prison exposure that can reach decades.
Do You Pay Taxes on Currency Exchange Profits
Yes, profits from currency exchange are taxable in the United States, and the tax treatment depends on whether the exchange is a personal transaction, forex trading, or a business activity.
The IRS treats currency exchange gains as taxable income. The specific tax rate and reporting method depend on the nature of the transaction. For individual forex traders operating through regulated brokers, IRC Section 988 typically governs spot forex transactions and treats gains as ordinary income, taxed at the trader’s marginal rate. However, traders can elect out of Section 988 treatment to use Section 1256, which provides a more favorable 60% long-term, 40% short-term capital gains split on qualifying contracts.
For business operators running a currency exchange service, profits from the business are ordinary income subject to both income tax and self-employment tax. The business can deduct legitimate operating expenses, but all revenue from exchange fees and spreads must be reported.
| Activity Type | Tax Treatment | IRS Form |
|---|---|---|
| Forex trading, spot transactions | Ordinary income under IRC Section 988 | Form 1040, Schedule 1 |
| Forex trading, futures/options (Section 1256) | 60/40 capital gains split | Form 6781 |
| Personal foreign currency gain over $200 | Taxable capital gain | Schedule D |
| Currency exchange business income | Ordinary income plus self-employment tax | Schedule C |
| Currency exchange business, S-corp or LLC | Pass-through income | K-1 and Schedule E |
Personal currency gains under $200 from a single transaction are technically exempt from tax reporting under a de minimis rule. Above that threshold, even a traveler who gains money on a currency fluctuation technically owes tax on it.
How to Report Currency Exchange Income to the IRS
Currency exchange income is reported to the IRS through different forms depending on the type of activity, but all currency exchange profits must be reported on a federal tax return.
Individual forex traders using US-registered brokers typically receive a Form 1099-B from their broker summarizing their gains and losses. Those figures flow to Schedule D (capital gains) or Form 6781 (for Section 1256 contracts), depending on which election the trader made. Section 988 ordinary income goes on Schedule 1 of Form 1040.
Business operators running currency exchange services report all revenue and expenses on Schedule C of Form 1040 if operating as a sole proprietor. Corporations and LLCs taxed as corporations file on Form 1120. Partnerships and S-corporations report on Form 1065 and Form 1120-S respectively, with income flowing to owners on Schedule K-1.
IRS reporting forms for currency exchange income:
- Form 1040, Schedule 1: Section 988 forex trading gains (ordinary income)
- Form 6781: Section 1256 contract gains and losses (60/40 treatment)
- Schedule D: Capital gains from currency positions
- Schedule C: Business income from operating a currency exchange service
- FinCEN Form 114 (FBAR): Foreign financial accounts exceeding $10,000 at any point in the year
- Form 8938 (FATCA): Foreign financial assets exceeding $50,000 (single filer) or $100,000 (married filing jointly)
Failure to report currency exchange income is tax evasion. The IRS treats currency exchange the same as any other income-generating activity, and the penalties for unreported income include back taxes, substantial interest, civil fraud penalties of 75% of the underpayment, and potential criminal prosecution.
FBAR and Form 8938 Currency Exchange Reporting
Any US person who holds foreign currency in a foreign financial account exceeding $10,000 at any point during the year must file a FinCEN Form 114, commonly called the FBAR.
The FBAR (Foreign Bank Account Report) is filed separately from the federal tax return, directly with FinCEN through its online system. The deadline is April 15, with an automatic extension to October 15. The threshold is $10,000 in aggregate across all foreign accounts at any single point during the year, not just at year-end. This means a person who held $15,000 in a foreign currency account in February but withdrew it in March still has a filing obligation.
Form 8938 is a separate but related requirement filed with the IRS as part of the federal tax return. Form 8938 applies to specified foreign financial assets above $50,000 for single filers or $100,000 for married filing jointly at year-end, or above $75,000 or $150,000 at any point during the year. Both the FBAR and Form 8938 can apply simultaneously to the same accounts.
| Requirement | Form | Threshold | Filed With | Deadline |
|---|---|---|---|---|
| FBAR | FinCEN Form 114 | $10,000 aggregate in foreign accounts | FinCEN (online) | April 15; auto extension to Oct 15 |
| FATCA | IRS Form 8938 | $50,000 year-end ($75,000 during year) for single filers | IRS with Form 1040 | Tax return deadline |
The civil penalty for willful failure to file an FBAR is the greater of $100,000 or 50% of the account balance per violation. Criminal penalties for willful failure include up to 10 years in federal prison under 31 U.S.C. Section 5322(b).
Currency Transaction Report $10,000 Threshold
Banks and currency exchange businesses must file a Currency Transaction Report with FinCEN for every cash transaction that exceeds $10,000 in a single business day.
The CTR requirement under 31 U.S.C. Section 5313 applies to financial institutions and MSBs. This includes licensed currency exchange businesses. When a customer comes in and exchanges more than $10,000 in cash in a single day, the business is required to file a CTR with FinCEN within 15 days of the transaction. The report includes the customer’s identifying information, the amount of currency involved, and the nature of the transaction.
The $10,000 threshold applies to cash, meaning physical currency. It does not apply to wire transfers or electronic transactions in the same direct way, though those are covered under other reporting frameworks including SAR requirements.
CTR rules for currency exchange operations:
- Threshold: Over $10,000 in cash in a single business day per customer
- Filing deadline: Within 15 days of the transaction
- Form: FinCEN Form 112
- Customer ID required: Government-issued photo ID; name, address, taxpayer ID
- Aggregation rule: Multiple transactions in a day by the same customer are added together
Structuring transactions to stay just below $10,000, which is called structuring or “smurfing,” is itself a separate federal crime under 31 U.S.C. Section 5324. The law makes it illegal to break up transactions specifically to avoid triggering the CTR requirement.
Is Exchanging Currency on the Black Market Illegal
Yes, exchanging currency on the black market is illegal in the United States and can result in federal charges for unlicensed money transmission, money laundering, tax evasion, and potentially additional charges depending on the source of the funds.
Black market currency exchange typically refers to informal, off-the-books currency exchange conducted outside of licensed channels, often at rates more favorable than official rates. In some countries, black market currency exchange exists because of government-controlled exchange rates. In the US, where exchange rates are market-determined, the “black market” for currency is more often associated with avoiding the AML and reporting requirements that licensed exchanges must follow.
The illegal nature of black market currency exchange in the US stems from three issues: the exchange operator lacks required licenses, transactions are not reported as required, and the customers avoiding formal channels are often doing so to conceal funds from the IRS, law enforcement, or both.
What makes black market currency exchange illegal in the US:
- Operating without FinCEN MSB registration: Felony under 18 U.S.C. Section 1960
- No CTR filing: Felony under 31 U.S.C. Section 5322
- Handling funds from illegal sources: Money laundering under 18 U.S.C. Section 1956
- No IRS reporting of profits: Tax evasion under 26 U.S.C. Section 7201
- Structuring transactions below $10,000: Felony under 31 U.S.C. Section 5324
Federal agencies including FinCEN, the IRS Criminal Investigation division, and the FBI actively investigate and prosecute black market currency exchange operations. These networks are a primary target of anti-money laundering enforcement in 2026.
Frequently Asked Questions
Is it legal to exchange currency for profit in the United States?
Yes, exchanging currency for profit is legal in the US when done with proper licensing and tax compliance.
Anyone doing it as a business must register with FinCEN as a Money Services Business and obtain required state money transmitter licenses.
Individual forex traders using CFTC-registered brokers can legally trade currencies for profit without a separate MSB license.
Operating without required registrations and licenses is a federal felony under 18 U.S.C. Section 1960.
Do you need a license to exchange currency for profit?
Yes, anyone exchanging currency for profit as a business needs to register with FinCEN and obtain a money transmitter license in each state where they operate.
The federal registration is done through FinCEN Form 107 under 31 U.S.C. Section 5330.
State licenses are separate requirements administered by each state’s banking or financial regulation department.
Individual forex traders using licensed brokers do not typically need their own MSB registration.
What is the penalty for exchanging currency without a license?
The federal penalty for operating an unlicensed currency exchange business is up to five years in federal prison per count under 18 U.S.C. Section 1960.
FinCEN civil penalties for failure to register as an MSB reach up to $5,000 per day of non-compliance.
All funds involved in the unlicensed operation are subject to mandatory federal forfeiture.
Additional charges for money laundering and tax evasion frequently accompany unlicensed currency exchange prosecutions.
Do you have to pay taxes on currency exchange profits?
Yes, all currency exchange profits are taxable income under US federal law.
Forex traders using spot transactions are typically taxed under IRC Section 988 as ordinary income.
Business operators running currency exchange services report profits as business income on Schedule C.
Personal foreign currency gains over $200 per transaction must be reported as capital gains on Schedule D.
What triggers a currency transaction report with the IRS?
A Currency Transaction Report is triggered when a customer exchanges more than $10,000 in cash in a single business day.
The CTR is filed by the bank or licensed currency exchange business with FinCEN, not directly with the IRS.
The filing deadline is within 15 days of the transaction under 31 U.S.C. Section 5313.
Breaking transactions into smaller amounts specifically to avoid the $10,000 threshold is the separate federal crime of structuring under 31 U.S.C. Section 5324.
Currency exchange for profit is legal in the US when you follow the rules, and those rules are specific, enforceable, and carry serious consequences for anyone who ignores them. The federal licensing, reporting, and tax framework is not designed to stop currency exchange; it is designed to make sure it happens transparently.
Bookmark this page for reference before starting any currency exchange activity, and share it with anyone who assumes that small-scale or informal currency exchange falls outside the law. In 2026, federal enforcement of MSB and money transmission requirements is active and well-funded.
