ATF Form 3 and Form 4 both transfer National Firearms Act items, but they sit on opposite sides of the counter. Form 3 is the tax-exempt application one licensed dealer uses to move an NFA firearm to another licensed dealer. Form 4 is the tax-paid application a dealer files to transfer that same item to you, the end buyer. If you’re purchasing a silencer, short-barreled rifle, or other NFA firearm for personal ownership, Form 4 is the one that matters; Form 3 happens behind the scenes when your dealer stocks the item.
What Form 3 Does
Form 3 is officially the “Application for Tax-Exempt Transfer of Firearm and Registration to Special (Occupational) Taxpayer.” Both parties to the transfer must hold a Federal Firearms License and have paid the Special Occupational Tax that authorizes them to deal in NFA firearms. Because the item stays inside the regulated commercial supply chain, no transfer tax is due.1eCFR. 27 CFR 479.88 – Special (Occupational) Taxpayers
The transferring dealer files Form 3 in duplicate, identifying both parties by name, address, FFL number, and SOT stamp, and describing the firearm by manufacturer, model, caliber, serial number, and barrel length where applicable. The ATF must approve the application before the item physically changes hands, at which point the registration in the National Firearms Registration and Transfer Record shifts from the transferor to the transferee.1eCFR. 27 CFR 479.88 – Special (Occupational) Taxpayers
Processing is quick. As of early 2026, the ATF reports a one-day turnaround for electronically filed Form 3 applications and roughly seven days for paper submissions.2Bureau of Alcohol, Tobacco, Firearms and Explosives. Current Processing Times
What Form 4 Does
Form 4 is the “Application for Tax Paid Transfer and Registration of Firearm.” It’s how an individual, trust, or other legal entity takes ownership of an NFA item from a dealer. Your dealer files this form on your behalf after you’ve selected and paid for the item, and the ATF must approve the application and register the firearm to you before you can take it home.3eCFR. 27 CFR 479.84 – Application to Transfer
The transfer tax depends on what you’re buying. Machineguns and destructive devices carry a $200 tax per transfer. Every other NFA firearm, including silencers, short-barreled rifles, short-barreled shotguns, and “any other weapons,” transfers at $0.4Office of the Law Revision Counsel. 26 USC 5811 – Transfer Tax When tax is due, it’s paid with the application and evidenced by a tax stamp affixed to the approved form.5Office of the Law Revision Counsel. 26 USC 5812 – Transfers
The Practical Differences Side by Side
Five things separate the two forms in practice.
Who files. Form 3 is filed by the transferring dealer, and both parties must be FFL/SOT holders. Form 4 is filed by your dealer, and the transferee is you or your entity.
Tax. Form 3 carries no transfer tax. Form 4 is either $200 or $0 depending on the item type.
Background check. Form 3 assumes both parties are already vetted licensees. Form 4 triggers a full background investigation of the transferee, and for trusts, of every responsible person.
Documentation. Form 3 is essentially a description of the item and the two licensed businesses. Form 4 pulls in photographs, fingerprints, and, for entities, formation documents and responsible person questionnaires.
Processing time. Reported averages as of February 2026:2Bureau of Alcohol, Tobacco, Firearms and Explosives. Current Processing Times
- Form 3 (eForms): 1 day
- Form 3 (paper): 7 days
- Form 4 Individual (eForms): 10 days
- Form 4 Individual (paper): 21 days
- Form 4 Trust (eForms): 26 days
- Form 4 Trust (paper): 24 days
These are averages and shift month to month. A background check hit, usually from a name match, will stretch the timeline further.
What You Supply for a Form 4
The paperwork changes depending on whether you’re buying as an individual or through an entity.
Individual Applicants
An individual applicant provides a 2 x 2-inch photograph showing a full front view of the face, head uncovered, taken within one year of the application date, along with two completed FBI Form FD-258 fingerprint cards with prints clear enough for classification. Both are mandatory, and an application missing either will be returned.6eCFR. 27 CFR 479.85 – Identification of Transferee Fingerprints can be done at a local police station or through a private livescan service, typically for $30 to $80.
Trust and Entity Applicants
When the buyer is a trust, corporation, LLC, or other legal entity, you submit complete, unredacted copies of the trust declaration, partnership agreement, articles of incorporation, or corporate registration, along with a completed ATF Form 5320.23 responsible person questionnaire for each responsible person. Each of those people also submits the same photograph and two FD-258 fingerprint cards required of an individual applicant.6eCFR. 27 CFR 479.85 – Identification of Transferee
A responsible person is anyone with authority to act on behalf of the entity in firearm transactions. For a typical gun trust, that means every named trustee. More trustees means more background checks, and more background checks tends to mean a longer wait.
Submitting the Form 4
You have two options: the ATF’s eForms portal or a paper application by mail. Most filers use eForms because the processing advantage is real and the workflow is simpler.
Through eForms, your dealer initiates the Form 4 and you receive a notification to log in and complete your portion.7Bureau of Alcohol, Tobacco, Firearms and Explosives. eForms Applications You upload your photograph and a digital fingerprint file in the .EFT format that livescan providers generate. On trust filings, confirm the right fingerprint file is attached to the right responsible person; mismatches are a common reason applications get returned. Tax payment, when required, runs by credit card through the portal.
Paper Form 4 applications go to the NFA Division at P.O. Box 5015, Portland, OR 97208-5015, and include the form in duplicate, physical fingerprint cards, photographs, and a check or money order for any tax due.8Bureau of Alcohol, Tobacco, Firearms and Explosives. New Mailing Addresses for Many ATF Registration Forms Verify that the serial number on the paperwork matches the actual firearm before mailing. A single wrong digit sends the packet back and costs you weeks.
After submission, you must also send a copy of the application and any responsible person questionnaires to the Chief Law Enforcement Officer in your area. This is notification only. The CLEO has no authority to approve or deny the transfer. The ATF has proposed removing this requirement, but as of early 2026 it remains in force.9Bureau of Alcohol, Tobacco, Firearms and Explosives. Reduce Burden
Once approved, eForms filers receive the stamped form as a PDF. Paper filers get a physical document. Keep a copy accessible whenever you transport the item; it’s your proof of lawful registration.
Who Cannot Receive an NFA Firearm
A Form 4 will be denied if the transfer would put the buyer in violation of federal law. Firearm possession is barred for anyone who:
- Has a felony conviction, meaning any crime punishable by more than one year of imprisonment
- Is a fugitive from justice
- Uses or is addicted to controlled substances
- Has been adjudicated mentally defective or committed to a mental institution
- Is unlawfully present in the United States, or admitted on a nonimmigrant visa with limited exceptions
- Was dishonorably discharged from the military
- Has renounced U.S. citizenship
- Is subject to a domestic restraining order
- Has a misdemeanor domestic violence conviction
Anyone under indictment for a felony is also barred from receiving firearms.10Office of the Law Revision Counsel. 18 USC 922 – Unlawful Acts A background check flagging any of these categories produces a denial. Sharing a name or physical description with someone who has a criminal record can trigger a delay rather than an outright denial while the FBI works it out.
Why the Distinction Matters
Possessing an unregistered NFA firearm, transferring one without ATF approval, or making a false statement on any NFA application form are federal crimes under 26 U.S.C. § 5861.11Office of the Law Revision Counsel. 26 USC 5861 – Prohibited Acts A conviction carries up to ten years in federal prison and a fine of up to $10,000.12Office of the Law Revision Counsel. 26 USC 5871 – Penalties Taking possession of an item before your Form 4 is approved is one way to trigger a violation; so is letting an unauthorized person access an item registered only to you. The form that puts your name on the registry is Form 4, and until it comes back approved, the item legally belongs to the dealer holding it under the last approved Form 3.