If payment security checks delay transactions in the United States, the transaction may remain pending or temporarily blocked while the bank or payment system verifies the activity. During this time, the payment may not go through immediately.
Security checks are triggered to prevent fraud, including situations where your bank suspects fraud while traveling, and are usually automated.
What happens
When a transaction is flagged:
- The payment may not be approved instantly.
- The transaction may show as pending or declined, especially in cases where payment authorization fails repeatedly due to security checks.
- The bank may pause processing for review.
You may receive:
- A verification request (SMS, app, or email).
- A request to confirm the transaction.
Until verification is completed:
- The payment may not be finalized.
- The merchant may not receive funds.
What determines what happens next
The outcome depends on:
- Whether you respond to verification requests.
- Bank fraud detection systems.
- Transaction amount and location, including situations where your bank blocks a transaction abroad, may affect how security checks are applied.
- Merchant risk profile.
If verified:
- The transaction may be approved.
If not verified:
- The transaction may be declined or canceled.
What it may lead to
Common outcome:
- Short delay followed by approval or decline.
Possible escalation:
- Temporary card restriction may escalate to cases where your card is temporarily frozen until verification is completed.
- Repeated verification requests for future transactions.
Worst realistic outcome:
- Payment blocked entirely until resolved with the bank.
- Failed bookings or canceled services due to delay.
- Multiple pending transactions affecting available balance.
Security delays can interrupt time-sensitive payments.
Common escalation triggers
- Unusual spending patterns.
- Transactions in a new country.
- High-value purchases.
- Rapid repeated transactions.
What this depends on
Outcomes vary based on:
- Bank security systems.
- Card network policies.
- Merchant processing systems.
- Whether the transaction is domestic or international.
Most decisions are automated and occur in real time.
Who controls the process
Transaction approval and security checks are controlled by:
- The issuing bank.
- Card networks.
Merchants do not control fraud verification decisions.
Last reviewed: March 2026
This page describes typical operational outcomes. Individual cases vary.