Yes, you can deposit $350,000 in a checking account, but your bank will file a report and ask questions about where it came from.
Banks are required by federal law to report cash deposits of $10,000 or more to the Financial Crimes Enforcement Network (FinCEN), a division of the U.S. Treasury. This report is called a Currency Transaction Report (CTR), and it is routine—not a sign of wrongdoing. The bank files it automatically; you do not need to do anything. However, your bank will also ask you to explain the source of the money before processing the deposit, because they need to document that they are not helping move money for illegal purposes.
The deposit itself will not be frozen or rejected if the source is legitimate. But the process will take longer than a normal deposit, and you may need to provide documents proving where the money came from.
Key Takeaways
- Deposits of $10,000 or more trigger a Currency Transaction Report that your bank must file with the federal government—this is automatic and legal.
- Your bank will ask you to explain the source of the money in writing before the deposit clears, so have documentation ready.
- Legitimate sources include business income, inheritance, sale of property, loan proceeds, or savings you are consolidating from another account.
- The deposit will not be rejected if the source is lawful, but processing may take three to five business days instead of one.
- Splitting a large deposit into smaller ones to avoid the $10,000 threshold is illegal and will trigger additional scrutiny, not avoid it.
What your bank will ask and what documents to bring
When you walk in to deposit $350,000, the teller will direct you to a bank officer or compliance specialist rather than processing it at the window. That person will ask you directly: where did this money come from? You will need to answer clearly and have documents to back it up.
Common sources and the documents banks typically ask for are shown below. Bring originals or certified copies, not photos.
| Source of Money | Documents to Bring |
|---|---|
| Business income or sales | Recent business tax returns, profit-and-loss statements, invoices, or bank statements from your business account showing deposits over time |
| Inheritance or estate settlement | Copy of the will, probate court order, or letter from the estate executor showing the amount and date of distribution |
| Sale of property, vehicle, or valuable item | Closing statement (for real estate), bill of sale, or receipt showing the sale price and date |
| Loan from a bank or lender | Loan agreement, promissory note, or bank statement showing the deposit into your account |
| Savings from another bank account | Bank statements from the account you are transferring from, showing the balance and your name on the account |
| Settlement or lawsuit proceeds | Settlement agreement, court order, or letter from your attorney's trust account showing the amount and date |
| Gift from a family member | Written statement from the giver (signed and dated), their bank statement showing the transfer, and proof of your relationship |
If you cannot produce documentation—for example, if the money came from years of cash savings kept at home—tell the bank officer that directly. They may ask follow-up questions or request a written statement from you explaining the history. This is not a refusal; it is part of their legal obligation to understand the source.
Why banks ask and what happens after you explain
Banks are required under the Bank Secrecy Act to know their customers and to report suspicious activity. A $350,000 deposit is not suspicious by itself—people inherit money, sell homes, and close business accounts every day. But the bank needs to confirm that you are the rightful owner and that the money is not proceeds from crime, money laundering, or sanctions violations.
Once you provide the explanation and documents, the bank will verify them (by checking dates against public records, calling the other bank, or reviewing the paperwork). If everything checks out, the deposit will be processed. The CTR will be filed with FinCEN within 15 days, but that does not affect you—it is a government record, not a flag on your account.
Your account will not be frozen, and you will be able to use the money once the deposit clears, which typically takes three to five business days for a large deposit. Some banks may place a hold on part of the funds while they verify the source, but they must notify you in writing of the hold period.
What not to do: splitting deposits and structuring
Do not break the $350,000 into ten deposits of $35,000 each to avoid the $10,000 reporting threshold. This is called structuring, and it is a federal crime under the Bank Secrecy Act, separate from whatever the money is actually for. Banks are trained to spot patterns of deposits just under $10,000, and they report structuring to law enforcement.
Structuring carries criminal penalties including fines up to $250,000 and up to five years in prison. It also triggers when ready investigation, asset freezes, and civil forfeiture—meaning the government can seize the money. The irony is that structuring turns a legal deposit into a crime, even if the money itself is completely legitimate.
Make one deposit. Bring your documents. Answer the questions. This is the legal and fastest path.
If your bank refuses the deposit or closes your account
Banks have the right to refuse deposits or close accounts if they believe the source is suspicious or if the customer will not provide an explanation. This is rare with legitimate sources and good documentation, but it does happen.
If your bank refuses the deposit, ask for the reason in writing. If they cite suspicious activity or structuring, you can provide additional documentation or a written statement explaining the source. If they still refuse, you have the right to move your account to another bank. A second bank may be more willing to process the deposit if you come prepared with full documentation from the start.
If a bank closes your account after you deposit the money, they must give you notice and a reasonable time to withdraw your funds (usually 10 to 30 days, depending on state law). The money is yours; the bank is straightforward ending the relationship. You can deposit it at another institution.
Frequently Asked Questions
Will the bank report me to the IRS or police?
The bank reports the deposit amount and your information to FinCEN, a financial intelligence unit. This is not a report to police or the IRS unless the bank also suspects illegal activity. A CTR is routine and does not trigger an investigation on its own. The IRS may see the report, but that does not mean they will audit you—they audit based on tax returns and other factors.
Do I have to pay taxes on a large deposit?
Not on the deposit itself. If the money is from a legitimate source—inheritance, loan, sale of property, or savings—it is not taxable income. However, if it is business income or investment gains, you owe taxes on it. The bank's report does not determine your tax liability; your tax return does. Consult a tax professional about your specific situation.
What if the money is a gift?
Gifts are not taxable to the recipient, and there is no limit on how much someone can give you. However, the giver may owe federal gift tax if they give more than $18,000 in a single year (the 2024 limit; it changes yearly). The bank will ask for proof that it is a gift—a signed letter from the giver and their bank statement showing the transfer. The giver's tax situation is their responsibility, not yours.
Can I deposit the money in cash, or does it have to be a check?
You can deposit cash, but the bank will count it in front of you and may ask more detailed questions about where the cash came from, since cash is harder to trace than a check or wire transfer. If you have the option, a cashier's check or wire transfer from the source (another bank, a business, an attorney's trust account) will speed up the process because the bank can verify it directly with the other institution.
How long will the deposit take to clear?
For a large cash deposit, expect three to five business days. If it is a check or wire transfer, it may clear faster once the bank verifies the source. The bank must notify you in writing if they place a hold on any part of the funds, and they must tell you when the hold will be lifted.