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.
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