You can generally deposit very large checks at a bank, even millions, as there's usually no upper limit on standard checking/savings accounts, but amounts over $10,000 trigger mandatory IRS reporting (Currency Transaction Report - CTR) and larger amounts (over $6,725) can face holds for verification, while smaller, multiple deposits to avoid reporting ("structuring") are illegal. Banks might set limits for mobile/ATM deposits or specific accounts like CDs, and you should always expect holds for large deposits to ensure legitimacy, requiring communication with your bank.
While you can deposit checks over $10,000 at any bank or ATM, cashing this requires the bank to report it to the Internal Revenue Service (IRS), a rule for all cash transactions over $10,000. If you need a substantial check, you may also want to consider cashier's checks that the bank guarantees.
If deposited by check, the bank generally must make the first $6,725 available consistent with the bank's normal availability schedule. The bank may place a hold on the amount deposited over $6,725. For check deposits over $6,725, banking laws and regulations allow for exceptions to the rules on availability of funds.
Any cash or check transactions exceeding $10,000, or a series of smaller transactions designed to avoid reporting thresholds (“structuring”), will be reported to the IRS by banks as required by the Bank Secrecy Act.
The "$10,000 bank rule" refers to federal laws requiring financial institutions and businesses to report large cash transactions (deposits, withdrawals, payments) of over $10,000 in currency to the government to combat money laundering and financial crimes. Banks file Currency Transaction Reports (CTRs) for cash activity over $10,000, while businesses file Form 8300 for similar payments, both sending info to FinCEN and the IRS to track illicit funds.
That's because the IRS requires banks and businesses to file Form 8300 and a Currency Transaction Report, if they receive cash payments over $10,000. Depositing more than $10,000 will not result in immediate questioning from authorities, however. The report is done simply to help prevent fraud and money laundering.
Generally, it takes two to five business days to get all the funds from a check into your account. However, some factors might hold up the check-clearing process, like the status of your account or the place where you deposited the check. Find out exactly how long it takes a check to clear.
The majority of banks don't limit how much cash you can deposit, but all institutions have to report deposits of $10,000 or more to the federal government. It's safest to deposit large sums in person, but you could opt for an armored transport for sums greater than $50,000.
Banks are required to report cash into deposit accounts equal to or in excess of $10,000 within 15 days of acquiring it. The IRS requires banks to do this to prevent illegal activity, like money laundering, and to curtail funds from supporting things like terrorism and drug trafficking.
Bottom line. In most cases, a check should clear within one or two business days. There are a few cases in which a check might be held for longer, such as if it's a large deposit amount or an international check. Make sure to review your bank's policies for what to expect in terms of check hold times.
Financial institutions have to report large deposits and suspicious transactions to the IRS. Your bank will usually inform you in advance of submitting Form 8300 or filing a report with the IRS. The Currency and Foreign Transactions Reporting Act helps prevent money laundering and tax evasion.
Did you know that you can get in trouble if you deposit too much money? That's because any deposit over ten thousand dollars gets flagged by banks and they will have to report it to the federal government.
When you deposit $10,000 or more in cash, your bank or credit union will report it to the federal government. The $10,000 threshold was created as part of the Bank Secrecy Act, passed by Congress in 1970, and adjusted with the Patriot Act in 2002.
Banks Must Report Large Deposits
Banks must file CTRs to the Financial Crimes Enforcement Network (FinCEN), which is part of the U.S. Department of the Treasury. Some banks will do this manually, while others will automate the process.
The types of checks that clear immediately or very quickly are cashier's checks, certified checks, and government checks, because they are guaranteed by a financial institution or the government, with funds already set aside or provided directly from the institution. A cashier's check, in particular, draws from the bank's funds, while a certified check uses funds already verified and held from the personal account. U.S. Treasury checks, money orders, and checks from your own bank also fall into this category.
If your deposits are for the same transaction, they cannot exceed $10,000 per year without reporting. Although the IRS does not regulate how often you can deposit $9,000, separate $9,000 deposits may still be flagged as suspicious transactions and may be reported by your bank.
Do I have to pay taxes on a $20,000 gift? You do not need to file a gift tax return or pay gift taxes if your gift is under the annual gift tax exclusion amount per person ($19,000 in 2025). If you do exceed that amount, you don't necessarily need to pay the gift tax.
How far back can the IRS go to audit my return? Generally, the IRS can include returns filed within the last three years in an audit. If we identify a substantial error, we may add additional years. We usually don't go back more than the last six years.