My acquirer froze my funds: UK recovery runbook
Stripe, SumUp, Square and PayPal Zettle automated risk-scoring can freeze settlement without warning. UK route: confirm the freeze in writing, send the full evidence pack proactively, set up backup processing to keep trading, and escalate to the Financial Ombudsman Service after 8 weeks of unresolved complaint. Most freezes resolve in 5 to 30 days; FOS escalation unlocks longer ones.
Acquirer-specific freeze patterns (2026)
| Acquirer | Common trigger | Typical resolution |
|---|---|---|
| Stripe | Volume spike (3x normal), unusual transaction pattern, category mismatch | 5-14 days with proactive evidence; 30+ days without |
| SumUp | First high-value transaction (£500+), early-life freeze in first 60 days, category flag | 5-21 days; ID and bank-statement re-verification standard |
| Square | Multiple chargebacks in a short window, sudden category change | 7-30 days; risk review formal |
| PayPal Zettle | PayPal account-level flags, complaint volume, account-history flags | 10-30 days; PayPal Resolution Center process |
| Dojo | Less common; usually contract-level (chargebacks, MCC change) | Underwriter-led; account-manager involved |
| Adyen / Worldpay | Even less common; deep onboarding underwriting reduces post-launch freezes | Direct contact with acquirer relationship manager; no public dispute portal |
Pattern observations from UK SMB merchant reports, 2025-2026.
First 24 hours: what to do
- Email the acquirer's risk or compliance team. Subject: "Funds hold notification, account [your-account-id], request for written reason and timescale."
- Note the date and time of the freeze, the amount held, and the most recent transactions before the freeze.
- If your acquirer published a public timeline (Stripe, Square do), screenshot the dashboard message about the hold.
- Do not call repeatedly. Each call resets the queue. Send one written request and follow up daily by email.
- Set up a backup processor immediately. SumUp and Square activate within 1-3 business days; Tap to Pay on iPhone via SumUp can be live the same day.
The evidence pack (send all at once)
Acquirer risk-review teams resolve faster when documents arrive in one batch. Drip-feeding extends the review.
- Photo ID for all directors and beneficial owners (passport or driving licence)
- Proof of UK business address (utility bill or bank statement, less than 3 months old)
- Business bank statement (last 3 months) showing the same account name as on the acquirer record
- Companies House filing for the registered business (downloadable from find-and-update.company-information.service.gov.uk)
- Customer correspondence about the flagged transactions (emails, messages, support tickets)
- Invoices, receipts or order records for the flagged transactions
- Supplier invoices or stock evidence (for retail)
- Website terms-of-service URL or PDF
- Cover letter explaining the trading pattern, average ticket size, and any recent business changes
Set up backup processing (keep trading)
The held funds are with the acquirer that froze them. To keep trading, you need a second processor live. Most UK SMB merchants now run two acquirers in parallel exactly for this reason:
- If frozen by SumUp: activate Square or Tap to Pay on iPhone via Stripe. Same-day activation on Square; 1-2 days on Stripe.
- If frozen by Stripe: activate SumUp Solo. Same-day Tap to Pay or 2-3 day hardware delivery.
- If frozen by Square: activate Stripe or SumUp.
- If frozen by PayPal Zettle: activate any non-PayPal alternative.
- If frozen by Dojo or a tier-one: the contract usually permits parallel processing, but check the exclusivity clause first.
The 14-day formal complaint
If the hold is unresolved at 14 days, escalate by lodging a formal complaint. Under the Payment Services Regulations 2017 and the FCA's complaints rules, the acquirer must:
- Acknowledge the complaint within 5 business days
- Provide a final response or update within 15 business days
- Provide a final response within 35 business days at most
- Resolve the complaint within 8 weeks total
Email format: subject line "Formal Complaint, account [id], unresolved funds hold". Body: timeline, evidence sent, requests made, response received, financial impact. Cite PSR 2017 and FCA DISP rules. Request the acquirer's complaint reference number.
FOS escalation (after 8 weeks)
The Financial Ombudsman Service is free for UK consumers and microenterprises (turnover under £6.5m, headcount under 10). Card-payment-fund freezes are an accepted category. Process:
- Wait until the acquirer has either issued a final response, or 8 weeks have passed without resolution.
- Submit a complaint at financial-ombudsman.org.uk with the full timeline and evidence pack.
- FOS acknowledges within 5 business days.
- FOS investigator typically takes 8-16 weeks to issue an initial assessment.
- If you accept, the acquirer must comply (FOS decisions are binding on the acquirer if accepted by you).
- If either party rejects the assessment, the case goes to a full Ombudsman decision, adding 4-12 weeks.
FOS can order the acquirer to release funds plus interest plus distress / inconvenience compensation (typically £100-£750 in UK SMB cases).
When to consider legal advice
For sums above £5,000 still held at 12 weeks, or where the acquirer alleges fraud, consider speaking to a solicitor familiar with UK payment-services law. Pre-action letters under the Civil Procedure Rules often unlock acquirer responses where customer service has stalled. Free initial consultations are available from many City law firms specialising in financial services.
For criminal-side allegations (acquirer claims fraud), file an Action Fraud report and request the acquirer's evidence in writing. The criminal and contractual tracks run in parallel.
Pre-empt the next freeze
- Tell the acquirer when something changes. New product line, ticket-size jump, expected volume spike. Email the risk team in advance.
- Keep KYC fresh. Re-verify ID and address every 12 months. SumUp, Stripe and Square all prompt this; do not skip.
- Run two acquirers. Stripe plus SumUp, or Square plus Dojo. Cost is minimal; resilience is huge.
- Move higher-value or higher-risk transactions to the bigger acquirer. Tier-one acquirers underwrite more deeply at onboarding; freezes are rarer in steady state.
- Build a 4-week cash float. Most freezes resolve within 4 weeks. A float covers the gap.
Frequently asked questions
My acquirer just froze my settlement. Is this normal?
It is common with Stripe, SumUp, Square and PayPal Zettle. They run automated risk-scoring and can hold funds without warning. Mainstream-merchant freezes most often stem from a sudden volume spike, a large single transaction, a pattern flag (e.g. multiple chargebacks in a short window) or a category change. Funds are not lost, but recovery takes 5 to 30 days typically.
What is the legal status of an acquirer holding my money?
Acquirers are licensed payment institutions or e-money institutions under FCA regulation. Their terms-of-service give them broad rights to hold funds for risk review. The Payment Services Regulations 2017 require them to act fairly, give reasons, and resolve complaints within 8 weeks. After 8 weeks of unresolved complaint you can escalate to the Financial Ombudsman Service.
Can I get the money out faster?
Often yes. The acquirer is risk-scoring; they want documents that close the risk. Send the documents proactively before they ask: ID, address proof, business banking statement, customer correspondence about the flagged transaction, evidence of legitimate trading. Faster cooperation usually shortens the hold.
Is the FOS the right escalation route?
Yes if the acquirer is FCA-regulated (most UK acquirers are). The Financial Ombudsman Service handles disputes between consumers and microenterprises (under £6.5m turnover, under 10 staff) and FCA-regulated firms. Card-payment-fund freezes are an accepted category. FOS resolution typically takes 2 to 4 months but can order the acquirer to release funds plus pay compensation.
Can I switch acquirers while my funds are frozen?
Yes, but the held funds stay with the original acquirer until released. Switch the live processing to a new acquirer to keep trading; pursue the held funds separately. Many SMB merchants have a backup acquirer set up exactly for this scenario.
What documents does the acquirer typically want?
Photo ID of directors, proof of business address (utility bill, bank statement), business bank statements (3 months), ID for the named bank account holder, invoices or receipts for the flagged transactions, customer correspondence, supplier invoices or stock proof (for retail), website terms-of-service. Send all of these in one batch; do not drip-feed.
Can the acquirer keep my money permanently?
Only if they have evidence of fraud or scheme-rule breach that justifies forfeiture. Standard risk-review holds resolve and release. If the acquirer is keeping funds against an alleged fraud case, you should get a written explanation and (for sums above £5,000) consider legal advice. The Action Fraud route covers the criminal side; the FOS route covers the contractual side.
How do I avoid the next freeze?
Three preventatives: (1) keep your acquirer informed of any business change (new product line, average-ticket increase, expected volume spike), (2) keep your KYC documents fresh with the acquirer (re-verified once a year), (3) use an acquirer that fits your trade pattern. SumUp and Stripe are sensitive to category change; Dojo and tier-one acquirers underwrite more deeply at onboarding and freeze less in steady state.
Need a backup acquirer set up fast?
If your funds are frozen and you need a second processor live by tomorrow, our matcher surfaces UK acquirers that activate within 1-3 business days. No obligation, no upfront fees.
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Oliver leads AcceptCard's editorial and comparison research. With a background in UK commercial finance, he oversees provider analysis, rate verification, and industry reporting across all verticals.
Last reviewed: 10 May 2026