A Class 2 SOT is a special occupational taxpayer registration that allows an FFL holder to manufacture certain NFA firearms and NFA devices under the National Firearms Act in the United States. It is a tax status added on top of the right federal firearms licensee type, and it renews on a yearly cycle.
What Is a Class 2 SOT
“SOT” refers to the special occupational tax paid by certain Federal Firearms Licensees who import, manufacture, or deal in NFA items. Bureau of Alcohol, Tobacco, Firearms, and Explosives ATF ties SOT registration to ATF Form 5630.7.
A Class 2 SOT is the class used for manufacturing NFA-regulated items as part of a licensed firearm business. It is not a separate firearms license.
Class 1 vs Class 2 vs Class 3, in Plain Terms
Use the SOT class that matches the activity:
- Class 1: Importer activity involving NFA items
- Class 2: Manufacturer activity involving NFA items
- Class 3: Dealer activity involving NFA items
Who Needs a Class 2 SOT
You typically need a Class 2 SOT if you will manufacture NFA-regulated items as part of your licensed operations. This often includes suppressors and short barrel rifles, and it can include categories with tighter controls, like a machine gun or a destructive device, depending on your licensing scope and the specific rules that apply.
Underlying FFL Type Requirements
A Class 2 SOT is generally paired with manufacturer license types, most commonly:
- Type 07 FFL: manufacturer of firearms other than a destructive device
- Type 10 FFL: manufacturer of a destructive device
This matters because the SOT does not expand you beyond what your FFL type supports.
Place of Business and Multiple Locations
If you engage in taxable activity at more than one place of business, ATF’s Form 5630.7 instructions describe attaching a sheet listing additional locations and related identifying information.
What a Class 2 SOT Lets You Do
A Class 2 SOT allows qualified manufacturers to manufacture NFA-regulated items within the boundaries of federal law and ATF regulations. Your permissions depend on:
- Your underlying firearms license and the types of FFL
- Your registered SOT class
- Your products and how they are classified under the National Firearms Act
Common NFA Categories a Class 2 Manufacturer Works With
The NFA item categories that show up most often include:
- Suppressors
- Short barrel rifles
- Short-barreled shotguns
- AOWs
Certain items that meet the definition of a destructive device - Certain machine gun activity, but only within strict federal rules
The manufacturing side still carries transfer and documentation obligations.
How to Apply for a Class 2 SOT
ATF registers SOT taxpayers through ATF Form 5630.7, “Special Tax Registration and Return.” ATF states the SOT tax period runs July 1 through June 30, and payment is due annually by July 1.
Step 1: Confirm Your Base License Structure
Before you register:
- Confirm you are an active federal firearms licensee
- Confirm your FFL type supports the manufacturing activity you plan to conduct
- Confirm your business name and address details match your licensing records
If you are applying as a sole proprietor, confirm the filing details match how the business is registered.
Step 2: File ATF Form 5630.7 and Pay the Special Occupational Tax
Your SOT registration generally involves:
- Completing ATF Form 5630.7
- Selecting the correct SOT class (Class 2 for manufacturing)
- Paying the special occupational tax for the tax period
- Submitting through the ATF-supported process (ATF also supports Pay.gov)
Note: items like fingerprint cards and the responsible person background check package are typically part of your FFL application process, not the SOT filing itself.
Class 2 SOT Cost and Tax Rates
For manufacturers, the special occupational tax rate is $1,000 per year for each place of business.
Reduced Class 2 Rate
ATF and federal law also provide a reduced rate structure for certain taxpayers based on the gross receipts threshold ATF publishes. For qualifying taxpayers, the reduced rate is $500 per year.
Renewal Timing
The SOT year is fixed. It runs from July 1 through June 30. Payment is due by July 1 each year. Plan the renewal process early, so your SOT status does not lapse.
Operational Compliance for Class 2 SOT Licensees
Class 2 manufacturing work is documentation-heavy. Your internal controls should be written and repeatable, especially if you manufacture NFA firearms or handle regulated inventory movement.
Recordkeeping and Inventory Controls
Build a workflow that covers:
- How each NFA item enters inventory
- How you track the movement of items through your manufacturing process
- Who can access the inventory and approve changes
- What documentation must exist before any transfer is initiated
Inspection Readiness and Daily Discipline
ATF inspections focus on whether your records match the facts on the ground. Your process should define:
- How do you audit your own inventory
- How do you correct discrepancies
- How do you train staff on the rules that apply to your operation
Common Class 2 SOT Mistakes to Avoid
These issues create delays and exposure:
- Missing the July 1 renewal deadline and operating while lapsed
- Selecting the wrong SOT class for the activity
- Treating NFA documentation like standard firearm paperwork
- Running a taxable activity at an additional location without reflecting that in your filing
- Taking on complex categories like a destructive device without a documented compliance path
How FFLGuard Helps Class 2 Manufacturers
FFLGuard supports SOT holders and NFA-focused businesses with legal protection and compliance guidance tied to National Firearms Act requirements and ATF expectations. For Class 2 manufacturers, that support can include help with NFA transfer and SOT workflow questions, recordkeeping habits, and inspection readiness planning.
FFLGuard’s NFA Yearly Service Plan is positioned as ongoing support for day-to-day compliance questions and access to NFA resources through an attorney-led team. It is built to help reduce legal exposure and keep SOT activity aligned with federal firearms rules.
FAQs
Yes. SOT registration is layered on top of being a federal firearms licensee.
ATF uses Form 5630.7 for Special Tax Registration and Return under the National Firearms Act.
The manufacturer rate is $1,000 per year per place of business. A reduced rate of $500 per year can apply for qualifying taxpayers based on gross receipts.
No. Your permissions depend on your underlying FFL type and how the item is classified under the National Firearms Act. This can matter for items like a machine gun, a destructive device, or certain firearm component scenarios.