ATF Form 4 – Everything You Need to Know

If you're looking into buying an NFA firearm, you've probably heard of the ATF Form 4, but you may not be sure exactly what it is, when to use it, or how it works.

And if you looked into it a year ago, a lot has changed. Here's the short version for 2026:

2026 Form 4 update

• The tax stamp is $0 for silencers, short-barreled rifles (SBRs), short-barreled shotguns (SBSs), and Any Other Weapons (AOWs), effective January 1, 2026. It's still $200 for machine guns and destructive devices.
• Form 4 is now optional for some items, federally. Under an October 9, 2026 enforcement policy, ATF says it will no longer require approval or registration for silencers, SBRs, SBSs, and AOWs. That's a policy that could be rescinded or changed, not a court ruling, and your state's law still applies. Details below.
• Wait times are days or weeks, not months. ATF's own numbers show individual eForm 4s averaging about 6 days (August 2026).
• Machine guns and destructive devices haven't changed. They still need an approved Form 4 and the $200 tax.

I'm a firearms attorney, but I'm not your attorney, so this isn't legal advice. It is what you need to know to get through a Form 4 without surprises.

First, what are NFA firearms?

NFA firearms are a special category of highly regulated firearms under the National Firearms Act of 1934. This category includes:

• Silencers (suppressors)
• Machine guns (yes, they're legal to own; see who can own a machine gun)
• Short-barreled rifles (SBRs)
• Short-barreled shotguns (SBSs)
• Any Other Weapons (AOWs)
• Destructive devices (DDs)

When one of these is transferred to someone who isn't a qualified FFL/SOT, the transfer has to be applied for and approved by ATF in advance. That application is the ATF Form 4. It's also how the transfer tax gets paid, which is now $0 for most NFA firearms and $200 for machine guns and destructive devices.

This guide covers everything you need to know about the ATF Form 4 process.

What is an ATF Form 4?

The ATF Form 4 is used to transfer an already-registered NFA firearm to someone who isn't a qualified FFL/SOT, like an individual, a trust, or a corporation.

ATF's "Form 4" is actually ATF Form 5320.4, the "Application to Transfer and Register NFA Firearm (Tax-Paid)." (Older versions called it the "Application for Tax Paid Transfer and Registration of Firearm.") The current version is Revised December 2025, and ATF says previous editions are obsolete, so don't use an old PDF you saved years ago.

It's used whenever you're acquiring an NFA firearm that already exists. If you want to make one yourself, that's an ATF Form 1 instead.

If you're not an FFL/SOT and you've bought an NFA firearm from a dealer or an individual, you need an approved Form 4 before you can take it home. You can buy it and pay for it now, but you can't take possession until ATF approves the Form 4. The firearm stays with the seller (the transferor) while your application is processed.

Some ATF forms are notifications. The Form 4 isn't. It's an application, which means you're asking ATF for permission and you have to wait for approval. Approval also registers the firearm to you in the National Firearms Registration and Transfer Record (NFRTR).

If you'd rather get NFA firearms in a day or two instead of waiting on Form 4s, look into getting an FFL and becoming an SOT.

When to Use an ATF Form 4

The Form 4 is used anytime a registered NFA firearm is transferred, tax-paid, to someone who isn't a qualified FFL/SOT. It's how the transfer tax gets paid (now $0 for most items) and how you apply for permission to receive and possess the NFA firearm. When it's approved, it comes back with a tax stamp. On eForms, that stamp can now be electronic.

Common Form 4 situations:

• Buying from a dealer. An SOT dealer sells you a silencer, SBR, or other NFA firearm.
• Buying from another individual. Private-party Form 4 transfers are allowed when the buyer and seller live in the same state. If the seller is in another state, the item has to go to an SOT dealer in your state first, and then that dealer transfers it to you on a Form 4.
• Moving an item you already own into your trust or corporation (or back out). That's a transfer to a different "person," so it takes a Form 4. With the $0 tax, this no longer costs $200 for silencers, SBRs, SBSs, and AOWs.
• Buying a machine gun. Only machine guns that were lawfully registered before May 19, 1986 can be transferred to individuals, and those still carry the $200 tax.

If you inherited an NFA firearm, the estate should generally use the tax-exempt ATF Form 5 to transfer it to you as a beneficiary. That used to save $200 in every case. Now it mainly matters for machine guns and destructive devices, since the Form 4 tax on everything else is $0 anyway. The Form 4 itself says that for estate transfers the executor should contact the NFA Division (244 Needy Road, Martinsburg, WV 25405, or IPB@ATF.GOV).

If you're applying through an NFA gun trust or a corporation, each "responsible person" must also submit an ATF Form 5320.23, NFA Responsible Person Questionnaire, with their own photo and fingerprints. More on that below.

Remember, because a Form 4 is an application for permission, it must be approved BEFORE the NFA firearm is transferred.

How Much Does a Form 4 Cost in 2026?

The One Big Beautiful Bill Act (Public Law 119-21, §70436), signed July 4, 2025, changed the NFA transfer tax in 26 U.S.C. §5811 effective January 1, 2026:

NFA firearm	Form 4 transfer tax before 2026	Form 4 transfer tax since Jan 1, 2026
Silencer	$200	$0
Short-barreled rifle (SBR)	$200	$0
Short-barreled shotgun (SBS)	$200	$0
Any Other Weapon (AOW)	$5	$0
Machine gun	$200	$200
Destructive device	$200	$200

ATF updated its regulations to match (final rule, 91 FR 25112, May 8, 2026, effective June 10, 2026) and released the December 2025 revision of the Form 4 with a $0/$200 checkbox.

What Congress did not change: the registration requirement, ATF's pre-approval, the background check, the photos and fingerprints, or the Special Occupational Tax (SOT) that NFA dealers pay. As ATF put it in the final rule, "all other regulatory provisions of the NFA application and registration process remain in full force and effect."

Of course, the tax was never the only cost. You'll still pay for the item itself, any dealer transfer fee, fingerprints, and a trust if you use one.

Do You Still Need a Form 4 in 2026?

For a machine gun or destructive device, yes. For a silencer, SBR, SBS, or AOW, ATF now says no, as a matter of federal enforcement policy. But that's not the whole answer, and your state may still require one.

Here's how we got here. On August 5, 2026, a federal judge in the Northern District of Texas ruled in Silencer Shop Foundation v. ATF that, because Congress had cut the tax on silencers, SBRs, SBSs, and AOWs to $0, the NFA's registration and transfer provisions were no longer an exercise of Congress's taxing power for those items. The court enjoined ATF from enforcing them, but that order covers only the plaintiffs and certain other specified persons.

Then, on October 9, 2026, ATF published an open letter and FAQ announcing that the Department of Justice will use its enforcement discretion to apply that result to everyone. In ATF's words, it "will no longer require individuals to seek ATF approval under the NFA before making or transferring short-barreled rifles, short-barreled shotguns, silencers, and 'any other weapon[s]'" and "will also no longer require such items to be registered." I break the whole thing down in my article on ATF's NFA non-enforcement letter.

Here's what that does and doesn't mean for a Form 4:

• It's an enforcement policy, not a court ruling. ATF itself says enforcement could resume if Congress imposes a new tax, the injunction is dissolved or overturned, or the Department rescinds the policy. Federal law doesn't generally allow later registration of unregistered NFA items, and there's no automatic grandfathering.
• Form 4 is voluntary for silencers, SBRs, SBSs, and AOWs. ATF says it will keep accepting and approving Forms 1, 3, and 4 and keep maintaining the registry for anyone who wants to register an item.
• Dealer transfers still go through the Gun Control Act. For silencers and AOWs, that means a Form 4473 and a NICS check (unless exempt), plus the usual in-state-resident limits. For SBRs and SBSs, ATF says it won't enforce 18 U.S.C. 922(b)(4) until it writes new regulations.
• Machine guns and destructive devices are unchanged. They still carry the $200 tax and still need an approved Form 4, and 18 U.S.C. 922(o) still limits machine guns.
• State law still applies. Most states require NFA items to comply with federal law or be registered under the NFA, and ATF says it "cannot opine" on whether an unregistered item counts as lawful under state law. Some states ban most or all NFA items outright. Check your state's law before skipping the Form 4.