Suppressor tax stamp wait times currently average about 10 days for individuals filing an eForm 4 and 26 days for trusts, according to ATF data from February 2026. Paper filings and Form 1 applications run longer. Your own wait depends on how you file, how you register, and whether anything in your background check needs a closer look.
Current Average Wait Times
The ATF publishes monthly averages for finalized applications. As of February 2026, the numbers are a fraction of the year-plus waits common before the eForms system matured.1Bureau of Alcohol, Tobacco, Firearms and Explosives. Current Processing Times
Form 4 (transferring a suppressor from a dealer to you):
- eForm 4, individual: 10 days average, 12-day median
- eForm 4, trust: 26 days average
- Paper Form 4, individual: 21 days average
- Paper Form 4, trust: 24 days average
Form 1 (making your own suppressor):
- eForm 1: 36 days average
- Paper Form 1: 20 days average
These figures cover applications the ATF finalized during the month, whether approved, disapproved, withdrawn, or returned without action. Your individual wait can run shorter or longer. The gap between electronic and paper Form 4 has narrowed considerably, so paper is no longer the months-long penalty it once was.
One thing worth clearing up: people still say “tax stamp,” but the tax itself is now $0. P.L. 119-21, effective January 1, 2026, set the NFA transfer and manufacturing tax to $0 for every registered firearm except machineguns and destructive devices.2Congress.gov. The National Firearms Act and P.L. 119-21: Issues for Congress The updated statute reads $0 for any transferred firearm that is not a machinegun or destructive device.3Office of the Law Revision Counsel. 26 USC 5811 – Transfer Tax Every other NFA requirement stayed in place: application, background check, registration, and the wait.
Why Some Applications Take Longer
The averages hide a wide spread. Two things push individual waits above the mean: background check complications and preventable application errors.
The ATF runs every applicant through the FBI’s National Instant Criminal Background Check System. “Instant” holds up until something on the applicant’s record needs a second look. The FBI describes a delayed response as meaning additional research is needed to verify eligibility, which can involve contacting local, state, and federal courts to retrieve current records.4Federal Bureau of Investigation. About the National Instant Criminal Background Check System A common-name match, an incomplete court record, or a prior arrest without a clear disposition can add weeks. If you’ve had a NICS delay before, expect the same pattern.
Application errors are the other main cause of delays, and they’re avoidable. ATF data historically shows roughly 40 percent of applications come back with errors or missing information. On Form 4, the frequent problems are mismatched names between the form and trust documents, missing signatures, incorrect model numbers, blank law enforcement notification fields, and the wrong number of Responsible Person Questionnaires. When something is off, the ATF sends an error letter and gives you 30 days to respond before disapproving.5Office of the Law Revision Counsel. 26 USC 5812 – Transfers
Application volume also moves the averages. The NFA Division handles a fluctuating caseload with limited staff, and spikes, often after legislative changes or major product launches, push wait times up for everyone.
Individual vs. Trust: How Registration Type Affects the Wait
The February 2026 numbers show trust applications taking roughly two and a half times as long as individual filings on eForm 4. That is because a trust adds people to the background check.
An individual application submits one set of fingerprints, one photo, and one background check. A trust names multiple trustees, and every “responsible person” on the trust must submit fingerprints, a passport photo, and a completed Responsible Person Questionnaire (ATF Form 5320.23), and must notify their local chief law enforcement officer. “Responsible person” is defined broadly, covering settlors, trustees, and even beneficiaries with power to direct management of the trust or handle its firearms.6Bureau of Alcohol, Tobacco, Firearms and Explosives. Background Checks for Responsible Persons (Final Rule 41F) Each of those people is a separate background check that has to clear.
The tradeoff is worth understanding before you file. A trust lets any listed trustee legally possess the suppressor without the registered owner present, which matters if anyone else in your household might handle it. If you live alone and don’t plan to share it, individual registration is faster.
Expedited Processing
The ATF grants expedited processing in narrow circumstances. Military personnel with permanent change of station (PCS) orders, and their accompanied spouses, can request an expedite by emailing IPB@atf.gov with a current copy of the PCS orders.7Bureau of Alcohol, Tobacco, Firearms and Explosives. National Firearms Act Division Law enforcement officers can qualify with a signed letter from a commanding officer stating the item is needed for official duty. Dealers going out of business may request expedited processing with a discontinuance letter.
Temporary orders, including TDY, TAD, TCS, deployment orders, and command letters about upcoming sea duty, are generally not accepted. Before submitting a request, confirm that payment has cleared and have the item’s serial number ready.
Checking Your Status
If you filed electronically, log into your ATF eForms account. The application shows “Submitted/In Process” until the ATF makes a final determination, and you’ll get an email when the status changes to “Approved.” There is no back channel that reveals more than the portal.
For paper filings or specific questions, call the NFA Division at (304) 616-4500.7Bureau of Alcohol, Tobacco, Firearms and Explosives. National Firearms Act Division Have your application control number, the suppressor’s serial number, and the transferor and transferee names ready. Call volumes are high; mid-week, mid-morning tends to mean shorter holds.
When Approval Comes Through
For an eForm 4 approval, the stamp is emailed to you and your dealer. Paper approvals are mailed. You cannot take possession until the ATF has approved the transfer and registration.5Office of the Law Revision Counsel. 26 USC 5812 – Transfers When you pick it up, the dealer runs a final NICS check at the point of transfer, separate from the one the ATF already completed.8eCFR. 28 CFR 25.6 – Accessing Records in the System In rare cases that final check produces a delay or denial even after the stamp is approved, though it usually resolves within a few days.
A Form 1 approval authorizes you to begin manufacturing, not to skip any other step. You still have engraving requirements to satisfy before assembly.
If You’re Denied or Returned Without Action
A denial usually means something in your NICS background check disqualifies you. The ATF sends a letter explaining the denial and providing a NICS Transaction Number (NTN).9Bureau of Alcohol, Tobacco, Firearms and Explosives. ATF and FBI Formalize Appeals Process for Certain National Firearms Act Applicants
If the denial came from an FBI NICS “denied” recommendation, you can challenge it through the FBI’s Firearm Related Challenge process using the NTN from your letter. The FBI reviews your records using the same procedures it applies to denied point-of-sale checks, and may request additional fingerprints.9Bureau of Alcohol, Tobacco, Firearms and Explosives. ATF and FBI Formalize Appeals Process for Certain National Firearms Act Applicants The challenge addresses the NICS determination only, not the NFA application itself.
If the application was returned without action rather than formally denied, usually because of paperwork errors, you can correct and resubmit. Since the suppressor tax is now $0, resubmission doesn’t cost anything for the stamp itself, though your dealer may charge for administrative work.