The $10,000 cash deposit rule is not new, and the threshold has not changed since Congress wrote it into the Bank Secrecy Act in 1970. When you deposit more than $10,000 in physical currency at a bank or credit union, the institution files a Currency Transaction Report with the Treasury Department. You do not fill out anything, you are not under investigation, and the filing by itself creates no tax liability and no legal risk. The only way this rule creates trouble for you is if you try to avoid it.
What Actually Happens When You Deposit More Than $10,000
Any deposit, withdrawal, exchange, or transfer of more than $10,000 in physical currency triggers a Currency Transaction Report (CTR), which the bank files electronically with the Financial Crimes Enforcement Network (FinCEN) within 15 calendar days.1FFIEC BSA/AML Manual. Currency Transaction Reporting The legal authority sits in 31 U.S.C. § 5313, which lets the Treasury Secretary require reports on domestic currency transactions above a set amount.2Office of the Law Revision Counsel. 31 US Code 5313 – Reports on Domestic Coins and Currency Transactions
Two things about the mechanics matter to you. First, the bank does the paperwork. You will not sign the CTR or submit it. Second, banks aggregate. If you deposit $6,000 in the morning and $5,000 that afternoon at the same institution, the day’s total crosses the line and a CTR is filed, even though neither deposit alone would have triggered one. Aggregation applies across branches of the same bank.3Financial Crimes Enforcement Network (FinCEN). A Quick Reference Guide for Money Services Businesses
“Cash” here means physical currency, U.S. or foreign coins and paper bills. Personal checks, wire transfers, and electronic payments do not trigger a CTR.1FFIEC BSA/AML Manual. Currency Transaction Reporting
What the Teller Will Ask You For
When your cash transaction crosses $10,000, the teller will ask for identification and record several pieces of information on the CTR: your full legal name, date of birth, address, Social Security number or taxpayer identification number, and the type, number, and issuer of your ID.4Internal Revenue Service. FinCEN Form 104 – Currency Transaction Report A driver’s license or passport satisfies the ID requirement.
If the deposit is on behalf of a business, the bank collects identifying information for both you and the entity. The bank may ask about the source of the funds, but the reporting obligation is triggered by the dollar amount, not by your answer. Banks must retain CTR records for five years.5eCFR. 31 CFR 1010.430 – Nature of Records and Retention Period
The One Way to Get in Trouble: Structuring
Breaking up a cash transaction to keep any single piece under $10,000 is a federal felony called structuring, and it applies regardless of where the money came from. If you have $25,000 in legitimate cash and split it into three $8,000 deposits to avoid a CTR, the split itself is the crime. The underlying funds do not have to be tainted.6Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited
A conviction carries up to five years in prison and fines of up to $250,000 for individuals or $500,000 for organizations.7Office of the Law Revision Counsel. 18 US Code 3571 – Sentence of Fine If the structured transactions exceed $100,000 over a 12-month period, or if the structuring accompanies another federal crime, the prison and fine maximums double.6Office of the Law Revision Counsel. 31 USC 5324 – Structuring Transactions to Evade Reporting Requirement Prohibited
The government can also seize the money through civil asset forfeiture. Under 31 U.S.C. § 5317, property involved in a structuring violation, including funds already in your account, can be forfeited to the United States without a criminal conviction.8U.S. Department of the Treasury. 31 USC 5317 – Search and Forfeiture of Monetary Instruments Small business owners who deal in cash have been caught up in forfeiture actions on lawful earnings, because a pattern of sub-$10,000 deposits looked like structuring to investigators.
Intent is the legal element. Structuring only occurs when the purpose of splitting the transaction is to evade the reporting requirement. The IRS acknowledges legitimate reasons for repeated smaller deposits, including insurance policies that cap on-premises cash, check cashers processing payroll with odd amounts, and customers splitting transactions to reduce wire fees.9Internal Revenue Service. IRM 4.26.13 – Structuring Even so, proving innocent intent after the fact is harder than depositing the full amount and letting the CTR get filed. If you have a large amount of legitimate cash, deposit it in one transaction.
Why Deposits Under $10,000 Can Still Be Flagged
The $10,000 threshold is not a safe harbor. Banks must file a Suspicious Activity Report (SAR) on any transaction involving at least $5,000 that they know or suspect is designed to evade BSA requirements.10Office of the Comptroller of the Currency. Suspicious Activity Report (SAR) Program A series of $9,500 deposits over consecutive days is a textbook SAR trigger, even though no single deposit crosses the CTR line. Deposits just below $10,000 spread across different days, branches, or tellers are patterns compliance software is built to catch.11Financial Crimes Enforcement Network. Suspicious Activity Reporting – Structuring
Unlike a CTR, a SAR signals that the bank thinks something warrants a closer look. You will never know a SAR has been filed on you, because banks are legally prohibited from telling the customer.
If You Are Paying a Business in Cash, a Separate Rule Applies
The CTR rule covers banks. A parallel rule covers the businesses you pay. Any trade or business that receives more than $10,000 in cash from a customer in a single transaction, or in related transactions, must file IRS Form 8300 within 15 days.12Internal Revenue Service. Form 8300 and Reporting Cash Payments of Over $10,000 Car dealerships, jewelers, real estate agents, and attorneys are common filers. The business must also send you a written statement by January 31 of the following year letting you know your information was reported.
Form 8300 uses a broader definition of “cash” than the CTR rule. Cashier’s checks, bank drafts, money orders, and traveler’s checks with a face value of $10,000 or less are treated as cash in certain retail contexts, such as sales of consumer durables, collectibles, or travel and entertainment packages over $10,000.13Internal Revenue Service. IRS Form 8300 Reference Guide A cashier’s check with a face value over $10,000 is not treated as cash for Form 8300 purposes.
Cryptocurrency is a special case. Congress amended IRC § 6050I through the Infrastructure Investment and Jobs Act to treat digital assets as cash for Form 8300 purposes, with a statutory effective date of January 1, 2024. The IRS then issued Announcement 2024-4 stating that no reporting is required under this provision until Treasury publishes final regulations. As of mid-2025, those regulations had not been issued, so businesses receiving more than $10,000 in cryptocurrency are not yet required to file Form 8300 for those transactions.
Why This Rule Keeps Getting Called “New”
The threshold has been $10,000 since 1970. What changes is the surrounding regulatory noise, and several recent items have created the impression the deposit rules themselves changed.
The USA PATRIOT Act of 2001 expanded which institutions fall under the BSA, requiring all financial institutions to establish anti-money laundering programs with compliance officers, training, and audits.14Financial Crimes Enforcement Network. USA PATRIOT Act That brought more businesses under federal reporting obligations, but it did not change the dollar amount that triggers a CTR.
A Biden administration proposal would have required banks to report aggregate annual inflows and outflows on accounts exceeding $600 to the IRS. It was never enacted, but the coverage was heavy. A separate measure lowered the Form 1099-K reporting threshold for third-party payment platforms like Venmo and PayPal. Neither of these had anything to do with the CTR or cash deposits, though both fed the perception of new banking laws on everyday transactions.
The Corporate Transparency Act, enacted in 2021, originally required many U.S. companies to report their beneficial owners to FinCEN. In March 2025, FinCEN issued an interim final rule exempting all domestic companies from beneficial ownership reporting, leaving only foreign-formed entities registered to do business in the U.S. subject to it.15Financial Crimes Enforcement Network. FinCEN Removes Beneficial Ownership Reporting Requirements for US Companies and US Persons The CTA operates independently from cash deposit reporting and never touched the $10,000 threshold.
Deposit more than $10,000 in cash and your bank files a report. That has been true for over 50 years. The filing itself is routine. Rearranging your deposits to keep the report from being filed is the only piece of this that carries prison time.