Yes, you can deposit cash into someone else's account, but the bank needs to know who the money is from

You can walk into a bank and deposit cash into another person's checking account if you have their account number and the bank's routing number. The deposit goes through. What matters is what happens after: the bank will record your name as the depositor, and depending on the amount and how often you do it, the account holder may need to explain where the money came from.

Banks are required to watch for patterns that look like money laundering — that is, deliberately breaking up large cash deposits into smaller ones to avoid reporting thresholds, or depositing cash on behalf of someone else without a clear reason. If a teller sees you depositing $9,500 in cash into an account that isn't yours, they will ask questions. If you do it repeatedly, the bank flags it.

The safest approach is to be direct: tell the teller the money is a gift, a loan repayment, or whatever it actually is. The account holder should also be present or have authorized the deposit in writing. If you're depositing for a business reason — payroll, vendor payment, customer refund — say that too.

Key Takeaways

  • You can deposit cash into someone else's account at their bank branch if you have their account number, but the bank records your name as the source.
  • Banks report cash deposits over $10,000 to the federal government, and they also watch for patterns of smaller deposits that appear designed to avoid that threshold.
  • The account holder should know about the deposit and ideally be present, or the bank may freeze the account while they investigate.
  • If the deposit is a gift, loan, or business payment, tell the teller what it is — banks expect an explanation for cash moving between accounts.
  • Some banks allow third-party deposits through their mobile app or ATM, which creates a clearer record than a cash deposit at the counter.

What the bank records and reports

When you deposit cash into someone else's account, the bank creates a record showing your name, the amount, the date, and the account number where the money landed. That record stays in the bank's system. If the deposit is $10,000 or more, the bank files a Currency Transaction Report (CTR) with the Financial Crimes Enforcement Network (FinCEN), a federal agency. The CTR includes your name and the account holder's name.

The $10,000 threshold applies to the total of all deposits in a single day. If you deposit $6,000 on Monday and $5,000 on Wednesday into the same account, that triggers a CTR because the total in one calendar day is $10,000 or more. The threshold resets each day.

Banks also watch for structuring — the practice of making multiple deposits just under $10,000 to avoid reporting. If a teller or the bank's monitoring system notices you depositing $9,500 repeatedly, they can file a Suspicious Activity Report (SAR) even if no single deposit hits $10,000. A SAR alerts law enforcement that the pattern looks intentional.

When the account holder needs to be involved

If you walk in and deposit cash into an account without the owner's knowledge, the bank may contact them to confirm the deposit is legitimate. Some banks freeze the account temporarily while they verify. This is especially true for large deposits or if the account has been flagged for other reasons.

The safest route is to have the account holder present when you make the deposit, or to get written authorization from them beforehand. If you're depositing on their behalf — for example, you collected rent from tenants and are depositing it into the landlord's account — bring documentation that shows the relationship and the reason for the deposit.

If the account holder is unavailable, you can also ask them to add you as an authorized user on the account, which gives you the legal right to make deposits and withdrawals. This requires a trip to the bank with both of you present and a signature card.

Mobile and ATM deposits as an alternative

Many banks now allow you to deposit cash through an ATM or mobile app without going to a teller. ATM cash deposits are faster and create a clear electronic record. You insert the cash, the machine counts it, and the deposit posts to the account immediately or within one business day.

Mobile app deposits typically work for checks, not cash, so that option is less useful here. But if the bank offers an ATM cash deposit service, that's often the cleanest way to deposit cash into someone else's account because there's no conversation with a teller and no room for misunderstanding.

Not all banks offer ATM cash deposits, and some limit the amount per transaction or per day. Check with the bank before you go — call their customer service line or ask at a branch.

What to tell the teller

Be straightforward about why the money is moving. Common reasons include: a gift to a family member, repayment of a loan, payment for goods or services, payroll for an employee, or a refund to a customer. The teller isn't interrogating you; they're filling out a form. A clear answer takes 10 seconds and prevents delays.

If the account holder is present, introduce them and explain the relationship. If they're not present, have their written authorization or be prepared to explain why they've asked you to make the deposit. If you're depositing on behalf of a business, bring a business card or invoice that shows the connection.

Avoid vague answers like "it's just money" or "they asked me to." Those trigger more questions. "This is a gift to my sister" or "I'm depositing payroll for my employees" or "This is a customer refund" all work fine.

Deposits over $10,000 and what happens next

If you deposit $10,000 or more in cash, the bank files a CTR with FinCEN within 15 days. This is routine and legal — it doesn't mean you've done anything wrong. The government uses CTRs to track large cash movements and spot patterns that might indicate crime. Most CTRs are filed without any follow-up.

However, if the bank suspects the deposit is connected to illegal activity — for example, you're depositing cash on behalf of someone who is known to be involved in drug trafficking — they can file a SAR and may refuse the deposit or close the account. Banks have the right to reject cash deposits if they believe the money is connected to crime.

If you're depositing a large amount of cash that is legitimate — inheritance, sale of a vehicle, business income — be ready to explain it. Bring documentation if you have it: a bill of sale, a letter from an estate attorney, or business records. This speeds up the process and shows the bank the money has a clear source.

Frequently Asked Questions

Can I deposit cash into someone else's account without them knowing?

Technically yes, but the bank may contact the account holder to verify the deposit is legitimate, especially if it's large or unusual. If the account is flagged, the bank may freeze it while they investigate. It's better to have the account holder's knowledge and permission.

Do I need the account holder's permission to make a cash deposit?

You don't need legal permission to walk up to a teller and deposit cash into an account number, but the account holder should know about it. If they don't, the bank may contact them, and they may dispute the deposit or ask the bank to reverse it.

What happens if I deposit $9,500 multiple times to avoid the $10,000 report?

Banks monitor for this pattern, called structuring. If a teller or the bank's system notices repeated deposits just under $10,000, they file a Suspicious Activity Report with law enforcement. Structuring is illegal even if the money itself is legitimate.

Can I deposit cash into someone else's account at an ATM?

Some banks offer ATM cash deposits, but the ATM must be set up to accept cash and the account number must be linked to that ATM. Not all banks offer this service. Call the bank or check their website to see if cash deposits are available at ATMs.

What if the bank refuses my cash deposit?

Banks can refuse deposits if they suspect illegal activity or if the deposit violates their policies. If a bank refuses, ask why. If it's a reporting concern, they should explain. If it's a policy issue, you can try a different branch or a different bank, but the reason for refusal will likely follow the account.