Secure operations first, then work the process the bank will actually run. In my experience the costly mistake is spending the notice period demanding a reason. If the bank filed a suspicious activity report, federal law forbids it from telling you, so the explanation you are escalating for is one that nobody at the institution is permitted to give.
Part of our guide: Family Office.
The short version
- A bank that has filed a SAR may not say so, and 31 CFR 1020.320(e) makes that a legal bar rather than a customer-service failure.
- Three different events get called a freeze: a hold on one transaction, a closure with the balance returned, and a legal hold. The notice tells you which.
- Closure with the balance returned is the common outcome, and it is survivable when payroll and tax payments are not routed through that one account.
- Ask only the questions a bank is allowed to answer: effective date, how the balance comes back, which pending items get honored, which agency supervises the bank.
- Never reopen under a second entity and never split deposits. Both read as evasion, and structuring is separately a federal crime under 31 U.S.C. 5324.
Why nobody will tell you why
A bank must report transactions of at least $5,000 that it “knows, suspects, or has reason to suspect” involve illicit funds, are designed to evade a Bank Secrecy Act requirement, or have “no business or apparent lawful purpose.” The third branch is the one crypto businesses trip, because it also reaches a transaction that is “not the sort in which the particular customer would normally be expected to engage, and the bank knows of no reasonable explanation for the transaction after examining the available facts.” That last clause leaves the bank an exit when a reasonable explanation is already on file, which is why a documented, boring account profile does regulatory work long before anything goes wrong. Filing is due within 30 calendar days of initial detection.
Then the silence begins, and it is written into the rule:
No bank, and no director, officer, employee, or agent of any bank, shall disclose a SAR or any information that would reveal the existence of a SAR. Any bank, and any director, officer, employee, or agent of any bank that is subpoenaed or otherwise requested to disclose a SAR or any information that would reveal the existence of a SAR, shall decline to produce the SAR or such information, citing this section and 31 U.S.C. 5318(g)(2)(A)(i), and shall notify FinCEN of any such request and the response thereto.
The statute behind it, 31 U.S.C. 5318(g), reaches current and former officers, employees and contractors alike. So the relationship manager who has been apologetic and vague for three weeks may be doing exactly what the law requires, and my view is that this deserves reading as risk management under legal constraint. The same rule makes the bank keep the report and its supporting documents for five years and hand them to examiners on request, so a detailed file about your business exists and is closed to you.
The supervisory weather has shifted, which confuses people. The FDIC rescinded its 2022 prior-notification regime for crypto activity in FIL-7-2025, so supervised institutions may now engage in permissible crypto activity without prior approval if they manage the risks. A looser regulatory floor does not change one bank’s own appetite.
Three events wearing the same word
A hold on a specific transaction. One incoming wire or ACH sits unposted or goes back to the originator while the account itself still functions. This version resolves most often, on documents about that one transaction: the invoice, the counterparty, the contract. Send those and nothing else.
A closure with notice. A letter names an effective date and says the remaining balance will be returned. Banks generally may end a deposit relationship at their discretion under the account agreement, and the OCC’s consumer guidance is blunt that closing an account without prior notice can be lawful. Painful, survivable, and the case I see most.
A legal hold. A levy, a garnishment, a seizure warrant, or a court order. These carry their own notice machinery, so the bank will usually name the process even when it can say nothing else. This one goes to counsel the same day.
Diagnosing which you have takes one careful reading: an instrument means the first, a date the second, a named process the third.
The questions a bank will answer
The confidentiality rule has a boundary worth knowing. It bars the report and anything revealing that a report exists. It does not seal off “the underlying facts, transactions, and documents upon which a SAR is based.” So the transaction records, the deposit agreement and the mechanics of the closure stay ordinary business conversation. Aim there.
Ask for the effective date and the last day items will post. Ask how the balance comes back, in what instrument, and to which address of record. Ask which pending debits get honored, and which section of the deposit agreement the bank relies on. Ask which agency supervises the bank, because a written complaint goes to that regulator, and for national banks that is the OCC.
One question is worth asking yourself. If the business moves customer funds rather than trading its own, the bank’s real concern may be that it is facing an unregistered money services business. FinCEN registration is a fact you can produce, and producing it early beats any appeal.
What I actually see
The first pattern is a founder who spends the entire notice period fighting for a reason. Day 28 arrives, nothing has moved, and the balance leaves as a cashier’s check mailed to the address of record, a registered agent that forwards mail monthly. Working capital sits in an envelope in another state for six weeks.
The second is the single-threaded operating account. Payroll, the payroll-tax debits, the card-processing settlement and four vendor ACHs all pull from one routing number. When the account dies, the debits keep arriving and keep bouncing, and that return history follows the business into its next account-opening review. The LLC is fine, the custody arrangement is fine, and the company still cannot make payroll.
The third converts a survivable exit into a real problem: opening a fresh account at the same bank under a similar entity name, or breaking the next deposit into smaller pieces to draw less attention. Both are visible instantly, structuring is its own federal offense, and evading a reporting requirement is itself grounds for a filing.
Run this drill before you need it. List every dollar that leaves the operating account in the next 30 days by date and amount. Beside each one, write which second institution could execute it tomorrow without a phone call. Anything you cannot answer is the exposure, and none of it is about crypto.
Where this goes wrong
The damage is almost always operational, and it lands while the founder is arguing.
The specific failures: treating an unexplained closure as an error to be reversed instead of a deadline to be met. Letting the address of record go stale, so the returned balance is undeliverable. Running tax payments from a single routing number with no second setup. Assuming a returned wire has vanished, when it usually sits with the originating institution. And the corrosive one: reading legally compelled silence as personal hostility, then behaving accordingly toward the institution still holding the money.
The decision rule
- Read the notice for its type. Instrument, date, or legal process, then respond to that type only.
- Confirm the address of record before anything else, since the returned balance goes there.
- Open the second relationship immediately, at an unrelated institution, before the closure date.
- Re-point payroll, payroll taxes and recurring debits to the new account, and confirm each one posted.
- Answer only the transaction question asked, with documents, and stop there.
- Export statements, images and payee data while online access is live, because it ends with the account.
- Escalate to counsel on any levy, garnishment, seizure warrant or court order, the same day.
- File a written complaint with the bank’s regulator if you believe the closure breached the account agreement.
Where this sits
The exchange version behaves differently and has its own answer: what to do if a crypto exchange freezes your account. On the banking side the durable fixes are structural. Custody arrangements for an LLC decide whether the entity can reach assets when its cash account is gone, holding stablecoins in the entity changes which rails it depends on, and the discipline behind a data room checklist makes the next account-opening review short.
These questions cross professional boundaries, and the join is where they fail. Your attorney drafted the operating agreement and its banking authority. Your CPA set up the tax-payment method. The custodian holds the assets. Each is competent inside its own scope, and none is asked what happens when the account in the middle closes on 30 days’ notice. Bring that question to all three at once, in writing, before a bank raises it for you.
Sources
- 31 CFR 1020.320, Reports by banks of suspicious transactions (Cornell LII)
- 31 U.S.C. 5318(g), Reporting of suspicious transactions (Cornell LII)
- 31 U.S.C. 5324, Structuring transactions to evade reporting requirements (Cornell LII)
- OCC, HelpWithMyBank: the bank closed my account and did not notify me
- FDIC, FIL-7-2025: FDIC Clarifies Process for Banks to Engage in Crypto-Related Activities
- FFIEC BSA/AML Examination Manual, Suspicious Activity Reporting
- FinCEN, Money Services Business (MSB) Registration
Related
- Crypto custody for LLCs
- Can an LLC hold stablecoins?
- Can a Wyoming LLC own a crypto wallet?
- Crypto estate data room checklist
- Common crypto tax record mistakes
- Crypto banking and exchange
Last updated: 3 August 2026.
This article is general education, not legal, tax, or investment advice. Nothing here describes how to avoid or delay a financial institution’s reporting obligations, and closure rules turn on your deposit agreement and the bank’s regulator. Talk to a qualified attorney about your own situation.
