How Does a Suppressor Trust Work Under the NFA?

A suppressor trust works by making a revocable legal trust — rather than you personally — the registered owner of a suppressor in the federal NFA registry, so every person you name as a trustee can lawfully possess, transport, and use the suppressor without you standing next to them. The trust is created under your state’s trust law, submitted to the ATF with each application, and stays in place across your lifetime and after your death. A 2025 amendment to federal law dropped the transfer and making tax for suppressors from $200 to $0, but the registration process itself is unchanged: every suppressor must still be approved by the ATF before anyone takes possession.

The Trust as the Legal Owner

Federal law requires every NFA item to be registered in the National Firearms Registration and Transfer Record, and the registry ties each item to a specific “person.”¹ That definition of person includes trusts, not just individuals. When a suppressor is registered to a trust, the trust is the legal owner, and anyone named as a trustee within that trust can lawfully possess the item.

A suppressor trust has three roles. The grantor (also called the settlor) creates the trust and usually serves as the initial trustee. Trustees manage the trust’s property and are the people who can actually possess, transport, and use the NFA items. Beneficiaries are named to inherit the items but have limited rights while the trust is active. Most suppressor trusts are revocable, so the grantor can amend the terms, add or remove trustees, or dissolve the trust entirely.

A beneficiary who is not also a trustee cannot possess, transport, or store trust-owned NFA items on their own. They can use the items only while a trustee is present and supervising. If you want someone to have unsupervised access, name them as a co-trustee, not just a beneficiary.

Responsible Persons and Background Checks

The ATF uses the term “responsible person” to describe anyone with the power to direct the trust’s management or handle its firearms. That covers the grantor and all co-trustees. Beneficiaries are generally excluded unless they also hold trustee-level authority.² The label matters because every responsible person must pass a background check each time the trust acquires a new NFA item, using the Responsible Person Questionnaire (Form 5320.23) along with fingerprints and a passport-style photo.³

Why Use a Trust Instead of Individual Registration

Registering as an individual is simpler on paper. A trust exists to solve three specific problems that individual registration creates.

Shared Legal Possession

When an NFA item is registered to you personally, no one else can lawfully possess it. Possessing an NFA firearm that is not registered to you is a federal crime.⁴ Your spouse, your adult child, or a friend at the range cannot take the suppressor out of the safe and use it unless you are physically present. A trust changes the answer: the item is registered to the trust, and every named trustee has lawful possession rights.

This is where constructive possession becomes a real risk for individual owners. If your spouse knows the combination to the safe where your individually registered suppressor sits, a prosecutor could argue they have the power and intent to control it. Adding your spouse as a co-trustee eliminates that argument.

Estate Planning

NFA items held in a trust are nonprobate assets. They pass directly to the trust’s named beneficiaries rather than moving through probate court. When the grantor dies, the executor or successor trustee applies to transfer the items to the lawful heirs using ATF Form 5, which is a tax-exempt transfer.⁵ No additional transfer tax is owed regardless of the item type. The trust document itself spells out who gets what.

Without a trust, an individually registered NFA item becomes part of the deceased owner’s estate. The executor has to work through both probate and ATF paperwork, and while that is happening, no one in the household can legally possess the item. A trust keeps a successor trustee in place so possession never lapses.

Who Can Serve as a Trustee

Every responsible person on the trust must be legally eligible to possess firearms under federal law. The ATF screens each one against the same criteria that apply to any firearm purchase.⁶ A person is disqualified if they:

Have a felony conviction, meaning any conviction where the possible sentence exceeded one year in prison, even if the actual sentence was shorter.
Are under indictment for any crime punishable by more than one year of imprisonment.
Unlawfully use or are addicted to any controlled substance, including marijuana, which remains illegal under federal law regardless of state legalization.
Have a misdemeanor conviction for a crime of domestic violence.
Are subject to a court order related to harassing, stalking, or threatening an intimate partner or their child.
Have been involuntarily committed to a mental institution or found mentally incompetent by a court.
Received a dishonorable discharge from the U.S. Armed Forces.
Have renounced U.S. citizenship or are unlawfully present in the United States.

If a trustee becomes prohibited after the trust is created — through a new conviction, a restraining order, or any other disqualifying event — they must be removed immediately. A well-drafted suppressor trust includes an automatic removal clause that strips a trustee’s authority the moment they become prohibited, even before a formal amendment is executed. Without that clause, the trust could technically have a prohibited person with legal authority over NFA items, which is itself a federal violation.

Creating the Trust Document

A suppressor trust is a legal document drafted for the specific purpose of holding NFA items. Generic revocable living trusts from an estate attorney often lack the NFA-specific provisions that matter, including language addressing constructive possession, automatic removal of prohibited trustees, and ATF compliance. Several services offer NFA-specific templates, and a firearms attorney can draft a custom document. Either way, the trust must name the grantor, initial trustees, and beneficiaries, and it must include clear rules for adding or removing people.

Execution requirements vary by state. Most states require the grantor’s signature, many require notarization, and some require witnesses. The trust must be properly executed under your state’s law before you submit any ATF application. Once you have a valid trust, you don’t file it with any state agency, but you do submit a complete, unredacted copy to the ATF with each transfer or manufacturing application.⁷

Registering a Suppressor to the Trust

The Transfer Tax After 2025

Federal law historically required a $200 transfer tax for most NFA items. A 2025 amendment to 26 U.S.C. § 5811 changed that. The transfer tax is now $200 only for machine guns and destructive devices. For every other NFA item, including suppressors, short-barreled rifles, short-barreled shotguns, and any-other-weapons, the transfer tax is $0.⁸ The same split applies to the making tax under Form 1.² Acquiring a suppressor through your trust now costs nothing in federal tax. You still pay the retail price and whatever your dealer charges.

Form 4 Transfers From a Dealer

The most common path is buying a suppressor from a licensed dealer holding Special Occupational Tax status. The trust, acting through a trustee, submits ATF Form 4 (Application for Tax Paid Transfer and Registration of Firearm). The form lists the trust’s legal name as the transferee, not any individual trustee’s name. The address on the form is where the suppressor will be kept.⁷

Along with Form 4, each responsible person submits a completed Form 5320.23 with a passport-style photo, plus two sets of fingerprints on FBI FD-258 cards.³ A complete, unredacted copy of the trust document must accompany the application. If the trust has had an application approved within the prior 24 months and nothing in the trust has changed, you can submit a certification to that effect instead of resubmitting the full document.

Making an NFA Item on Form 1

If you are manufacturing an NFA item — assembling a short-barreled rifle from a pistol, for example — the trust submits Form 1 rather than Form 4. The same responsible-person paperwork applies. The making tax for items other than machine guns and destructive devices is $0.²

CLEO Notification

You send a copy of the application to the chief law enforcement officer in your area, and each responsible person sends a copy of their Form 5320.23 to the CLEO in their area of residence. The CLEO has no authority to approve or deny the application, only to be notified.³

Processing Times

ATF approval times move around. As of February 2026, the average wait for a trust-filed Form 4 is roughly 26 days through eForms and about 24 days for paper submissions.⁹ The dealer cannot release the item until the approved form comes back to the transferor. Expect these numbers to shift; processing times have run from weeks to over a year depending on ATF workload.

Moving an Item You Already Own Into the Trust

If you already own an NFA item registered to you individually and want to move it into a trust, you file a new Form 4 transfer. You are the transferor, the trust is the transferee. For suppressors, the transfer tax is $0 under the current rate schedule. All responsible persons on the trust must still submit the full fingerprint and photo package.⁷ The item stays registered to you individually until the ATF approves the transfer, so you keep possession during the wait.

Running the Trust Over Time

Adding and Removing Trustees

Adding a trustee requires a formal amendment to the trust document. The amendment identifies the new trustee by full legal name and spells out their powers. Most trust documents require the grantor’s signature and notarization, and some require the new trustee to sign as well.

The new trustee does not have to submit fingerprints and photos to the ATF just because they have been added. That paperwork is triggered only when the trust applies for a new NFA item. At that point, the new trustee, now a responsible person, completes a Form 5320.23, submits fingerprints, and goes through the background check with everyone else on the trust.³

Removing a trustee follows the same pattern: draft an amendment, sign and notarize it, notify the remaining parties. The removed trustee returns any trust property and must immediately stop possessing any trust-owned NFA items. Keep every amendment with the original trust document, because the ATF may require the full history when processing future applications.

Records

Keep copies of every approved ATF form, the trust document with all amendments, and documentation of each NFA item the trust owns. There is no centralized ATF portal where you can look up your trust’s items, so your own records are the only proof of lawful registration. Store copies in more than one location. If you ever need to show law enforcement that possession is lawful, the approved ATF form for that specific item is what matters.

Travel

Interstate transport of machine guns, short-barreled rifles, short-barreled shotguns, and destructive devices requires advance written approval from the ATF on Form 5320.20.¹⁰ Suppressors are the exception. Federal law does not require a Form 5320.20 to take a suppressor across state lines. You still have to confirm that suppressors are legal in both the origin and destination states, because possession in a state that bans them is a state criminal offense regardless of your federal registration.

When you permanently relocate to another state with trust-owned suppressors, filing a Form 5320.20 is recommended because it updates your address in the federal registry. For items that require the form, the move is illegal without prior ATF approval.

State-Level Bans

Suppressors are legal to own in most states, but eight states and the District of Columbia prohibit civilian possession entirely: California, Delaware, Hawaii, Illinois, Massachusetts, New Jersey, New York, and Rhode Island. A federal trust registration provides no protection in those jurisdictions. Several other states allow ownership but prohibit using suppressors while hunting. Confirm your state permits civilian ownership before creating a trust or buying a suppressor.

Federal Penalties

NFA violations are federal felonies. Possessing an unregistered NFA item, transferring one without ATF approval, or making a false statement on an ATF application can result in up to 10 years in prison and a fine of up to $250,000 for an individual.¹¹¹² The firearm involved is subject to seizure and forfeiture. These penalties apply equally to trust-owned and individually owned items. If a trustee lets someone who isn’t on the trust walk off with a suppressor, both the trustee and the unauthorized possessor face potential federal charges.⁴ For trust owners, the practical risk is allowing an unauthorized person to access the items. Store them so only current trustees can reach them.

1
Office of the Law Revision Counsel. 26 USC 5841 – Registration of Firearms
2
Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Make and Register a Firearm – ATF Form 5320.1
3
Bureau of Alcohol, Tobacco, Firearms and Explosives. Background Checks for Responsible Persons (Final Rule 41F)
4
Office of the Law Revision Counsel. 26 USC 5861 – Prohibited Acts
5
Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Transfer and Register NFA Firearm (Tax-Exempt)
6
Bureau of Alcohol, Tobacco, Firearms and Explosives. National Firearms Act (NFA) Responsible Person Questionnaire – ATF Form 5320.23
7
Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Transfer and Register NFA Firearm (Tax-Paid) – ATF Form 5320.4
8
Office of the Law Revision Counsel. 26 USC 5811 – Transfer Tax
9
Bureau of Alcohol, Tobacco, Firearms and Explosives. Current Processing Times
10
Bureau of Alcohol, Tobacco, Firearms and Explosives. Application to Transport Interstate or to Temporarily Export Certain NFA Firearms – ATF Form 5320.20
11
Office of the Law Revision Counsel. 26 USC 5871 – Penalties
12
Bureau of Alcohol, Tobacco, Firearms and Explosives. NFA Handbook – Chapter 15 – Penalties and Sanctions