No, your .EFT File doesn't expire and you can use it for multiple tax stamp applications. Although, your .EFT File doesn't it expire, you may want to get a new .EFT File if the contents within the .EFT File changes, e.g. your name, address, significant changes to your weight, hair color, etc.
Source: “Bureau of Alcohol, Tobacco, Firearms and Explosives.” ATF Launches New Era of Reform | Bureau of Alcohol, Tobacco, Firearms and Explosives, www.atf.gov/rules-and-regulations/atf-launches-n...
The "Big, Beautiful [Suppressor] Bill" has officially passed the house in a 215-124 vote Thursday Morning. Their was one abstention, but after the vote did ultimately pass the House, their was a c...
Thanks to u/Smart_Slice_140 on Reddit for requesting and ultimately recieving the ATF Form 4 5320.4 Standard Operating Procedures from the National Firearms Act Division. His FOIA request of the S...