Buying a Firearm

What Is the National Firearms Act (NFA)?

If you have spent any time looking at suppressors or short-barreled rifles, you have run into the phrase “NFA item” and probably the words “tax stamp.” Both come from a piece of federal law that is almost a century old: the National Firearms Act. It is the reason some firearms and accessories involve federal paperwork and an approval wait while a standard rifle takes an afternoon. The NFA is not as mysterious as it sounds once you see what it covers and how the process works. Here is the plain-language version, current as of July 2026, including the tax change that took effect at the start of this year.

A quick history and what the NFA does

The National Firearms Act became law in 1934. It was passed in an era of high-profile organized crime, and its approach was not to ban the firearms it targeted but to regulate and tax them heavily. Rather than make certain items illegal, the law required that they be registered with the federal government and that a tax be paid to make or transfer them.

That basic structure still defines how NFA items work today. An NFA item is not contraband for an ordinary, eligible person to own in most of the country. Instead, it is tightly tracked. Each item is registered in a federal registry, every transfer is approved in advance by the government, and a federal tax is paid on the transfer. The agency that administers all of this is the Bureau of Alcohol, Tobacco, Firearms and Explosives, usually called the ATF. When people say a purchase is “going through the ATF,” an NFA item is often what they mean.

What the NFA actually regulates

The NFA does not touch most of the firearms a typical owner buys. Your standard handgun, shotgun, or rifle is regulated under different federal law and transfers the ordinary way. The NFA applies to a specific set of categories:

  • Suppressors, also called silencers, the devices that reduce the sound of a shot.
  • Short-barreled rifles (SBRs), rifles with a barrel under 16 inches, or an overall length under 26 inches.
  • Short-barreled shotguns (SBSs), shotguns with a barrel under 18 inches, or an overall length under 26 inches.
  • Machine guns, defined by statute as weapons that shoot, are designed to shoot, or can be readily restored to shoot more than one shot by a single function of the trigger without manual reloading. These carry additional federal restrictions on top of the NFA that sharply limit civilian ownership, which is why the transferable ones are so expensive.
  • Destructive devices, which covers explosive ordnance and firearms with a bore larger than one half inch, with an exception for shotguns recognized as suitable for sporting purposes.
  • “Any other weapons” (AOW), a catch-all for certain concealable or unconventional firearms that do not fit the other boxes.

The two categories an everyday enthusiast is most likely to encounter are suppressors and short-barreled rifles. Both are legal to own in much of the country for eligible buyers, and both are firmly inside the NFA process, which is why they cannot be bought across the counter and walked out the same day.

One point worth clearing up, because it causes more confusion than anything else in this area: pistol stabilizing braces. In 2023 the ATF issued a rule that would have reclassified many brace-equipped pistols as short-barreled rifles. That rule was struck down in federal court, and the government dropped its appeal in July 2025, so it is not in force. A braced pistol is not currently treated as an SBR under federal law. Configuration still decides how a firearm is classified, and state law can be stricter, so if you are putting together something unusual it is worth confirming where it lands before you build it.

The tax stamp and registration

The famous “tax stamp” is the heart of the NFA process. To make or transfer an NFA item, you file an application with the ATF, pay the federal tax if one applies to that category, and wait for approval. You file a Form 1 to make an item yourself and a Form 4 to transfer one from a dealer or another person. When the application is approved, the approved form is your proof that the item is registered to you.

The tax amount changed recently, and this is the part most older guides get wrong. For most of the law’s history the making and transfer tax was $200 on the common items, a figure unchanged in dollar terms since 1934, which made it far less of a barrier over time than it was in 1934. Federal legislation signed on July 4, 2025 rewrote that schedule. As of January 1, 2026, the federal making and transfer tax is:

  • $0 for suppressors, short-barreled rifles, short-barreled shotguns, and any other weapons
  • $200 for machine guns and destructive devices

That is the current law, not a proposal. The old $5 transfer rate that applied to any other weapons is gone as well, folded into the $0 tier.

What did not change is just as important. The tax went to zero for those categories, but the rest of the NFA still applies in full. The item is still registered, you still file the form, the ATF still has to approve the application before you can take possession, and the background check and identifying information the application requires, which typically includes fingerprints and a photograph, are all still part of the process. A $0 tax is not the same thing as deregulation, and bills that would remove suppressors from the NFA entirely have been introduced but have not become law. If someone tells you a suppressor is now an over-the-counter purchase, they are wrong.

Registration is the other half. Every NFA item is tied to a registry entry, and you should keep your approved paperwork with the item or somewhere secure. That paperwork is worth protecting as carefully as the item itself, because replacing it is a slow process.

How an NFA transfer differs from a normal purchase

Buying a regular firearm is fast. You go to a dealer, fill out the 4473, pass an instant background check, and in many cases you are done in under an hour. An NFA transfer is a different animal in three big ways.

First, it is not instant. Rather than a check that clears at the counter, the ATF reviews and approves the application before the transfer can complete. Electronic filing has cut approval times a great deal compared with the paper era, and waits that once routinely ran many months are now often far shorter. Times still vary by filing method and by application, and paper filings run considerably longer than electronic ones, so treat any specific number you see quoted as a snapshot rather than a promise. Ask your dealer what they are actually seeing.

Second, there is more paperwork, and there may be a tax depending on the category. You are filing a formal application and providing identifying information as part of the process. A licensed dealer who handles NFA items, sometimes called an NFA or Class 3 dealer, walks buyers through it, because the steps are more involved than a standard sale.

Third, possession rules are stricter. Because the item is registered to a specific person or legal entity, who may lawfully possess it and how it must be handled are more tightly controlled than for an ordinary firearm. Many buyers use a legal entity such as a trust to hold NFA items, partly to manage who is allowed to possess them. That is a planning decision worth getting right with proper guidance.

State law still has the final say

Even though the NFA is federal, it does not override your state. States vary widely on NFA items, and some prohibit private ownership of certain categories outright, regardless of what federal law would allow. A suppressor or short-barreled rifle that is straightforward to own in one state may be banned in another. Before you spend time and money on an NFA purchase, confirm that the specific category is legal to own where you live. The federal stamp does you no good if your state does not permit the item in the first place.

The NFA can feel intimidating, but it comes down to a simple idea: a defined set of firearms and accessories are legal to own but registered and closely regulated, with every transfer approved in advance by the ATF. If you are eyeing a suppressor or an SBR, expect paperwork and a wait even though the tax on those categories is now zero, and lean on a dealer who handles these items regularly. If a particular item is on your wish list, the best first step is to confirm it is legal in your state and then talk to a dealer who can run the process for you.

The National Firearms Act is federal law administered by the ATF, and the items it covers, the applicable taxes, and the transfer process are subject to change through legislation, regulation, and litigation. The federal tax figures in this article reflect the schedule in effect as of July 2026 following the changes that took effect on January 1, 2026, and they can change again. State laws vary widely and may prohibit categories of NFA items entirely, including suppressors, regardless of what federal law allows. Confirm current federal rules and the laws of your state before pursuing any NFA purchase. This article is general information, not legal advice.

Frequently asked questions

Are suppressors and short-barreled rifles legal to own? In much of the country, yes, eligible buyers can own them through the NFA process, but several states prohibit one or more categories outright. Always confirm that the specific item is legal in your state before starting, because the federal process does not override a state ban.

What is a tax stamp? It is the document showing that the ATF approved and registered your NFA application. It is your proof that the item is registered to you, and you should keep it with the item or somewhere secure. The name comes from the tax that was historically paid on the transfer, and people still use it even for the categories that now carry no tax.

Do I still have to pay $200 for a suppressor? No. As of January 1, 2026 the federal making and transfer tax is $0 for suppressors, short-barreled rifles, short-barreled shotguns, and any other weapons. It remains $200 for machine guns and destructive devices. The tax going to zero did not remove those items from the NFA, so the registration, the form, the background check, and the wait for ATF approval all still apply.

How long does an NFA transfer take? Longer than a normal gun purchase, because the ATF has to approve the application before you can take possession. Electronic filing has shortened waits considerably compared with the paper era, but times vary by filing method and by application, and paper filings take longer. Ask the dealer handling your transfer what they are currently seeing rather than relying on a number from an article.

Why do people use a trust for NFA items? A legal entity such as a trust can hold NFA items and help manage who is lawfully allowed to possess them, which is useful when more than one person may handle the item. Setting one up correctly is worth doing with proper legal guidance.

Is a normal AR-15 an NFA item? No. A standard rifle with a legal barrel and overall length is regulated under ordinary federal firearms law, not the NFA, and transfers the normal way. It only becomes an NFA matter if it is configured as a short-barreled rifle or otherwise falls into an NFA category. The article on AR-15 vs AR-10 covers standard rifle platforms.