Plain-English Definition
IAT stands for International ACH Transaction. IAT designates cross-border ACH payments that involve a financial institution outside the territorial jurisdiction of the United States.
Important: What this code is NOT
IAT is not an international roaming fee, foreign exchange surcharge, or bank penalty. It is an indicator that the initiating or receiving party's bank is located overseas.
Understanding IAT (International ACH Transaction)
IAT (International ACH Transaction) was established by Nacha in cooperation with the U.S. Department of the Treasury's Office of Foreign Assets Control (OFAC) to identify inbound and outbound international funds transfers.
Whenever money enters or leaves the U.S. ACH network involving a foreign bank, the transaction must carry the IAT SEC code along with specialized remittance and originator identification fields.
Financial institutions are legally required to perform enhanced OFAC sanctions screening and AML compliance verification on all IAT entries prior to posting.
How to Locate the Actual Merchant
Because IAT specifies the underlying payment rail or transaction type, you must examine the accompanying text on your statement to identify where you actually shopped or paid:
- Step 1 Check the originator name and foreign location listed in the extended description lines of the IAT transaction.
- Step 2 Verify foreign vendor purchases, overseas family remittances, cross-border freelance income (e.g., from Upwork, Deel, or foreign payroll), or international subscription services.
- Step 3 Ask your bank's wire/ACH operations department for the full IAT addenda record, which contains the originator's full street address and foreign banking details.
Common Statement Line Formats
Financial institutions typically format IAT entries like this:
DEEL INC IAT PAYROLL UKWISE PAYMENTS IAT REMITAIRBNB PAYMENTS IAT IRELANDPAYONEER INC IAT XFER
Verified Primary Sources
Every technical definition on this page is checked against official banking and regulatory rules:
- Nacha: International ACH Transactions (IAT) Executive Summary https://achdevguide.nacha.org/ach-file-details
- U.S. Department of the Treasury: OFAC Sanctions Compliance & IAT https://ofac.treasury.gov/faqs/topic/1506