ATF .EFT File Requirements
If you are using an .EFT File with your ATF eForm 1 or ATF eForm 4 applications, you will need to make sure that your .EFT File is formatted correctly and meets the requirements that are shown below. If your .EFT File doesn't meet these requirements, you won't be able to use the .EFT File with your ATF eForm tax stamp applications. Our .EFT File services are formatted correctly and meet the ATF's below requirements. You can view our .EFT File services here.
The uploaded EFT file must meet to the FBI Specification 8.1.0. Type of Transaction (TOT) must be "FAUF". The File extension must be "EFT" only. The Maximum file size is 12MB.
Other NFA Gun Trust and ATF Related Blog Posts
What is the Difference between Void and a Withdrawal request?
Per the ATF eForm's FAQ, "A 'VOID' is requested when the Form has already been approved, but no transfer, Making, or Manufacturing has occurred. A 'Withdrawal' is requested when the Form is still p...
ATF eForm 5320.20 Walk-Through Guide
How to guide and walk-through guide for the ATF Form e5320.20 – ATF e5320.20 Application to Transport Interstate or to Temporarily Export Certain National Firearms Act (NFA) Firearms Step By Step W...
ATF Form 4 December 2025 Typo Explained
The new ATF December 2025 version of the ATF Form 4 has been released with many changes. But it seems that new 2025 version has a typo that might be confusing. The typo that could cause confusio...