The most disorienting part is not the freeze. It is that your bank will not tell you why.
That is usually not obstruction. Where a freeze follows a suspicion report, explaining it to you would be a criminal offence for the bank. The offence is called tipping off, and it means the person on the phone may be genuinely unable to say anything useful.
The second thing nobody explains clearly: there are three different mechanisms that freeze a business account, and each runs on its own statutory clock. Knowing which one you are in tells you how long it can last and what actually moves it.
The three mechanisms
| Mechanism | Triggered by | Who decides | Maximum duration |
|---|---|---|---|
| Fraud check | The bank's own detection systems | The bank | Days, typically |
| AML suspicion report | A suspicion of money laundering | The bank, then the National Crime Agency | 7 working days, then up to 217 days |
| Account Freezing Order | An application to court | A magistrates' court | Up to 2 years |
They feel identical from the outside. They are not, and the response differs.
The ordinary case, and the fastest.
- Resolved by producing documentation
- Staff can discuss it with you
Silence is the signal, not rudeness.
- The bank cannot explain: tipping off is an offence
- 7 working days for the NCA to respond
- Then a 31-day moratorium, extendable to 217 days in total
A different route entirely.
- Only a magistrates' court can vary or discharge it
- The bank has no discretion here at all
Why the bank says nothing
Where a bank suspects criminal conduct, it must report it to the National Crime Agency before it can act on the funds.
Once that report is filed, the bank is legally prohibited from disclosing it to you. Tipping off is a criminal offence. The consequence is counter-intuitive and worth stating plainly: the more serious the reason for the freeze, the less the bank is allowed to say about it.
So the silence is information. A bank that talks freely about a hold on a specific payment is running a fraud check. A bank that will not engage at all, gives no timeline and escalates you nowhere is very likely in a reporting process it cannot describe.
What this means for you. Complaining to the branch will not produce an explanation, because the explanation is prohibited. Escalating to the complaints team will not either. What can move the situation is documentation, and where the amounts justify it, a solicitor who can correspond with the bank's legal function.
The statutory clocks
This is the section that matters most, and the one the SERP handles worst.
The seven working day notice period
When a bank needs a defence before dealing with funds it suspects, it submits a DAML SAR, a defence against money laundering suspicious activity report, to the NCA.
The NCA then has seven working days, counted from the first working day after the report is made.
If the NCA does not respond within that period, consent is deemed to have been given. The bank can proceed.
Most freezes end here. The report goes in, seven working days pass, nothing comes back, and the account reopens without anyone ever explaining what happened.
The 31 day moratorium
If the NCA refuses consent within those seven working days, a moratorium period of 31 calendar days begins, counted from the day of refusal.
At the end of the 31 days, consent is again deemed to have been given, under section 335 of the Proceeds of Crime Act 2002.
The 217 day ceiling
The moratorium can be extended by the Crown Court, more than once, up to a maximum of 217 days including the initial 31, under section 336A of the same Act.
That is the outer limit of the SAR route. Beyond it, a different mechanism is needed.
| Stage | Duration | Ends how |
|---|---|---|
| NCA notice period | 7 working days | No response, consent deemed given |
| Moratorium, if consent refused | 31 calendar days | Consent deemed given |
| Extended moratorium, by Crown Court order | Up to 217 days total | Court decides |
- Day 0The bank submits a DAML suspicious activity report.
- +7 working daysEnd of the NCA's response window. If it says nothing, consent is deemed given and the account can reopen.
- +31 calendar daysIf consent is refused, a moratorium runs under section 335 of the Proceeds of Crime Act. At its end, consent is deemed given.
- Up to 217 days in totalIf the Crown Court extends the moratorium under section 336A, this is the absolute ceiling of this route.
- Separate routeAn Account Freezing Order runs up to two years, and only a magistrates' court can grant, vary or discharge it.
Account Freezing Orders
A different route entirely. An Account Freezing Order under the Proceeds of Crime Act is granted by a magistrates' court, and only a magistrates' court can vary or discharge it.
They can last up to two years.
If you have received a court document, you are in this mechanism, and it is not one to handle without representation.
What actually gets an account reopened
In order of effectiveness.
One complete evidence pack, not a drip feed. The single most useful thing you can do is assemble a clear source-of-funds explanation with documents that match it: contracts, invoices, remittance advice, prior account statements showing the pattern. Send it once, complete. Answering questions one at a time restarts internal review cycles.
Consistency with what the bank already holds. Freezes are frequently triggered by activity inconsistent with the profile the bank has on file. If your business has changed, say so, and update the profile rather than defending a transaction in isolation.
A request for hardship access. If wages or essential payments are at risk, ask explicitly for limited access for those purposes. Banks can and do permit it, but generally only when asked.
Legal advice, early, if the amounts justify it. A banking litigation solicitor can correspond with the bank's legal team rather than its call centre, and can act if a court order is involved.
What not to do. Do not move the remaining balance elsewhere, do not open a parallel account and route payments through it, and do not ask a related company to receive funds on your behalf. Each of those turns a compliance question into a much worse one.
What triggers a freeze in the first place
Understanding the triggers is how you avoid the second one.
| Trigger | Why it fires |
|---|---|
| Activity inconsistent with the profile | A quiet account suddenly receiving large volumes |
| Large or irregular transfers | Amounts out of pattern for the business |
| Cross-border payments | Particularly to or from higher-risk jurisdictions |
| Rapid in-and-out movement | Funds arriving and leaving immediately |
| A counterparty flagged elsewhere | Your payer or payee, not you |
| Unpaid tax or a court judgment | A different mechanism, but the same practical effect |
| Suspected fraud on an inbound payment | Often a payment you received in good faith |
Two of those deserve emphasis for cross-border businesses.
A freeze can be about your counterparty, not you. If a customer paid you with funds that are under investigation, your account can be caught by a payment you had no reason to question.
Cross-border is a risk factor, not an accusation. A Hong Kong company invoicing European clients and banking in a third jurisdiction is entirely ordinary, and also matches the shape of arrangements banks are required to look at. Documentation is the difference.
How to reduce the odds
Not glamorous, and it works.
Tell the bank before the pattern changes. A large incoming payment that was flagged in advance is a non-event. The same payment unannounced is an alert.
Keep the profile current. Change of business activity, new markets, new counterparties, a change of directors: all of it should reach the bank before it appears in the transactions.
Invoice properly and keep the trail. The evidence pack you would need in a freeze is the same paperwork you should already hold. If assembling it would be hard today, that is the gap to close.
Do not bank exclusively in one place. A single account is a single point of failure. This is operational prudence rather than evasion: a second banking relationship, properly disclosed and documented, keeps payroll running while the first is resolved.
If the account is closed rather than frozen
Different outcome, different rights.
Banks can exit a customer relationship, generally with notice set by the contract, and are usually not obliged to explain the commercial decision. Where the closure follows a suspicion report, the same tipping off constraint applies.
The funds themselves are still yours. A closure without a court order is not a confiscation, and the balance should be returned or transferred, subject to any reporting process running in parallel.
If you believe a closure was unfair, the complaints route and, in the UK, the Financial Ombudsman Service exist for eligible complainants. That route is slow and does not unfreeze anything quickly, but it is the mechanism for the fairness question.
The summary
| You want to | Answer |
|---|---|
| Know why the bank will not explain | ✅ Tipping off is a criminal offence |
| Know how long a SAR-related freeze can last | ✅ 7 working days, then 31 days, up to 217 total |
| Know how long a court order can last | ✅ Up to 2 years |
| Get an account reopened faster | ✅ One complete source-of-funds pack, sent once |
| Keep paying wages meanwhile | ✅ Request hardship access explicitly |
| Move the money somewhere else | ❌ Never |
| Get an explanation by escalating a complaint | ❌ Not available where a report exists |
Frequently asked questions
Why has my business bank account been frozen?
Usually one of three things: an internal fraud check, a suspicion of money laundering that the bank has reported, or a court order. Common triggers include activity inconsistent with your profile, large or irregular transfers, cross-border payments, or a problem with a counterparty rather than with you.
Why will my bank not tell me why?
Because where the freeze follows a suspicion report, disclosing it would be the criminal offence of tipping off. The bank is legally prohibited from explaining, which is why escalating the complaint produces nothing.
How long can a bank freeze my account?
It depends on the mechanism. A fraud check is usually days. A money laundering report gives the National Crime Agency seven working days to respond, then a 31 calendar day moratorium if consent is refused, extendable by the Crown Court to a maximum of 217 days in total. An Account Freezing Order can last up to two years.
What is a DAML SAR?
A defence against money laundering suspicious activity report, submitted by a bank to the National Crime Agency when it needs a defence before dealing with funds it suspects. If the NCA does not respond within seven working days, consent is deemed to have been given.
What is an Account Freezing Order?
A court order under the Proceeds of Crime Act 2002, granted by a magistrates' court, which can freeze an account for up to two years. Only a magistrates' court can vary or discharge it.
What should I send the bank?
One complete pack: a clear source-of-funds explanation with matching documents such as contracts, invoices, remittance advice and prior statements. Sending it once and complete is far more effective than answering questions one at a time.
Can I still pay my staff?
Ask explicitly for hardship access for wages and essential payments. Banks can permit limited access, but generally only when it is requested.
Should I move my remaining money to another account?
No. Moving funds, opening a parallel account to route payments, or having a related company receive money on your behalf all make the situation substantially worse.
Can a freeze be caused by someone else?
Yes. If a customer paid you with funds under investigation, your account can be caught by a payment you received in good faith and had no reason to question.
Is a closed account the same as a frozen one?
No. A bank can end a relationship with contractual notice and is usually not obliged to explain a commercial decision. The balance remains yours and should be returned or transferred, subject to any reporting process running in parallel.
Do these timelines apply outside the UK?
No. The seven working day notice period, the 31 day moratorium and the 217 day ceiling are set by the UK Proceeds of Crime Act 2002. Other jurisdictions run different regimes with different clocks.
Sources
- National Crime Agency: UKFIU guidance on DAMLs and DATFs
- The Law Society: suspicious activity reports
Statutory timelines are those set by the Proceeds of Crime Act 2002: the seven working day notice period and the 31 calendar day moratorium under section 335, the extension to a maximum of 217 days under section 336A, and Account Freezing Orders. Descriptions reflect UK law and National Crime Agency guidance as published in August 2026. Other jurisdictions operate different regimes. This is informational and not legal advice; a frozen account is a situation for a qualified solicitor.