ATF eForm 1 Step-by-Step Guide

An eForm 1 is what you file when you are the one making the NFA item. Converting an AR-15 pistol into an SBR, building a suppressor from a kit, registering a short-barreled shotgun - all Form 1 territory. The Form 4 is a dealer-led transfer; the Form 1 is entirely on the applicant. This guide walks through the ATF eForms portal stop by stop, flags the specific fields that produce most rejections, and covers the differences between filing as an individual and filing through a trust.

As of January 1, 2026, the making tax is $0 for suppressors, SBRs, SBSs, and AOWs. The $200 tax still applies to machine guns and destructive devices. On every other category, the tax-paid selection is simply $0 - the button still has to be clicked, but no money changes hands.

What you need before you start

Gather everything below before opening eforms.atf.gov. Starting a draft without the uploads in place is a frequent cause of abandoned applications: the portal clears drafts periodically, and returning to a half-finished form often means starting over.

An eForms account at eforms.atf.gov with a UserID and a 4-digit PIN. The PIN acts as your digital signature at the end of the form and cannot be reset without the security questions you set up at registration.
A passport-style digital photo taken in the last six months. JPG or JPEG, under 3 MB, solid light background, no hats or sunglasses.
An EFT fingerprint file. The paper route is technically allowed, but mailing two FD-258 cards adds at least ten days to processing and reintroduces failure modes the electronic file avoids. See: How to convert an FD-258 fingerprint card to an EFT file at home.
For a trust filing: the full notarized trust document, including Schedule A (property listed in the trust) and Schedule B (responsible persons). Scan to a single PDF under 30 MB.
For a trust filing: a completed Form 5320.23 Responsible Person Questionnaire (RPQ) for every responsible person. More on the signature rules below.
Firearm specifications that match the engravings on the receiver exactly: manufacturer, model, caliber, serial number, barrel length, and overall length. Go look at the receiver; do not work from memory.

A note on browsers

The eForms portal is a finicky web application. Firefox handles it most reliably. Edge is a close second and runs modern scripts well. Chrome occasionally drops characters in text fields and renders dropdowns unpredictably. Safari is unreliable at the final certification step, and the "Sign and Submit" modal sometimes fails to render entirely. Use a desktop Firefox or Edge session from start to finish.

Individual or trust - which to file as

This is the first real decision, and it shapes everything downstream. Both filings are $0-tax for qualifying items in 2026, but the administrative path diverges.

Individual. The simplest route. One applicant, one passport photo, one EFT file, one SSN. The registered item can only be possessed by the applicant. If anyone else - a spouse, an adult child, a co-worker on a range trip - holds the item outside the applicant's immediate presence, that is a federal crime.

Trust. More paperwork, more flexibility. Anyone listed as a responsible person in the trust can legally possess the item. Each responsible person files their own Form 5320.23, their own photo, and their own EFT file. At the applicant's death, trust-held NFA items pass through the trust rather than probate, which avoids an NFA-specific complication that otherwise falls on an executor.

A practical rule of thumb: if the item will only ever be handled by the applicant, file individually. If anyone else is going to touch it legally, file through a trust. The trust document is a one-time cost; the Form 1 tax is $0 either way.

The eForm 1 workflow, stop by stop

The portal uses a "train-stop" navigation pattern across the top of every page. Each stop is one page of the form. A red icon on a stop means the form will not submit until the error is resolved. A yellow icon is a warning that will not block submission but often triggers a later manual review. Drafts can be saved and returned to as long as the session is active.

Applicant type and application type

Select Form 1 (5320.1). Pick your applicant category: Individual, Trust, Corporation, or Government Agency.

Under application type, choose Tax Paid. For SBR, SBS, suppressor, or AOW, select the $0 sub-option. Selecting Machine Gun or Destructive Device locks the $0 selection and forces the $200 path. If the $0 option is not available on a filing it should be available for, the firearm type is set wrong - back up and change it.

Applicant information

Individuals: the system auto-populates name, address, and contact fields from the account profile. Verify every field against the applicant's government-issued ID. If the ID says "Street" and the profile says "St.", fix the profile before submitting - those mismatches are a documented cause of manual review and rejection.

Trust filers: enter the trust name exactly as written on the trust document. "The John Smith Revocable Trust" is not the same string as "John Smith Revocable Trust" to an eForms examiner. Copy and paste from the trust PDF rather than retyping.

Then answer the prohibited-person questions carefully. A wrong answer here is treated as a fraudulent statement and is grounds for automatic disapproval with no correction window. Read each question slowly.

Responsible persons

Individual filers upload the passport photo and the EFT file on this stop and move on.

Trust filers click Add Responsible Person for every individual listed on the trust with the power to direct the management of trust property or to possess firearms held by the trust. For most trusts that is the settlor and any co-trustees. Beneficiaries are not responsible persons unless the trust gives them management authority.

For each responsible person, upload:

The passport-style photo (JPG or JPEG, under 3 MB).
The EFT fingerprint file, or leave blank to submit paper FD-258 cards after the form is accepted.
A signed, scanned Form 5320.23 RPQ (PDF, under 3 MB).

The SSN field is labeled optional. Leaving it blank pushes the FBI background check onto name-based matching, and for common names that means the FBI cannot cleanly rule out prohibited persons with similar names. The application then sits in manual review until a human resolves it. Providing the SSN skips that entire branch. Fill it in.

NOTE

The instructions on the current revision of Form 5320.23 require an original signature. A typed name or an image of a signature dropped into a PDF is grounds for rejection. The reliable path is to print the form, sign it in wet ink, scan at 300 DPI or higher, and upload the scan as a PDF. Live-drawn signatures in a PDF editor are sometimes accepted but are not the safe route.

The firearm (Line Item)

This stop produces most of the rejections on the entire form. Every field must match the receiver.

Manufacturer. Start typing the name and wait for the dropdown to offer matches. Click Verify on the correct entry to unlock the country field. For an SBR or SBS built on a commercial lower, select the original manufacturer (Aero Precision, Anderson, Ruger, or whatever is engraved on the receiver). For a scratch build where no commercial manufacturer made the receiver - a Form 1 suppressor from raw materials, an 80% lower the applicant machined themselves - use the code FMI (Form 1 Registration).

Model. Match the engraving character for character. "AR15" on the lower means "AR15" in the field, not "AR-15".

Caliber. Use numeric values as shown on the receiver. "5.56 MM", "9 MM", ".30 CAL", ".300 AAC". "Multi" is not accepted. Slang like ".300 Blackout" as written should be entered as ".300 AAC" or ".300 BLK" depending on the marking.

Serial number. Type it exactly as engraved. If the engraving contains a character the UI will not accept (dashes and spaces are the usual offenders), omit the character and upload a close-up photo of the engraving in Stop 5 as documentation of the mismatch.

Barrel length. Measured from the closed bolt face to the muzzle, in inches. Enter "N/A" for a suppressor.

Overall length. Measured with the stock in its most extended position, in inches. For a suppressor, this field holds the length of the suppressor itself.

Reason for making. "Investment and all other lawful purposes" is the standard entry and is accepted universally. Getting creative here can trigger a manual review. Describing a specific use case or unusual justification will delay the application by weeks for no benefit.

Electronic documents (firearm-level)

Individuals: usually empty. Attach a photo of the receiver engravings if any character had to be omitted from the serial number at Stop 4.

Trusts: nothing goes here that is not about the firearm itself. The full trust PDF uploads at the next stop.

Electronic documents (entity-level) and CLEO

Two things happen on this stop.

For trusts, upload the entire notarized trust document as a single PDF: every page, including Schedule A and Schedule B. A trust submitted without its schedules is disapproved for "failure to establish entity validity." If the trust was already approved by the ATF on a prior application within the last 24 months with no changes to trust membership, the 24-Month Document Submission Exception replaces the full upload - select that option and the trust PDF is not required.

For everyone, enter the Chief Law Enforcement Officer (CLEO) for the applicant's city or county - usually the sheriff or the chief of police. The city and county fields auto-fill from the zip code. CLEO notification is not CLEO approval: the officer does not approve or deny the application. After submission, the applicant prints the CLEO copy generated by eForms and mails it to that officer. It is a federal requirement, not a formality to skip.

Verify

The portal lists every field on the form with a green check or a red X. Fix everything marked red. Review anything marked yellow: an unverified manufacturer entry, an unusual address format, a blank optional field that is triggering a warning. Resolving a yellow warning now costs less than resolving an administrative rejection later.

Certify and submit

Select the certification radio button acknowledging that the information is true under penalty of perjury. Click Pay. For $0 items the payment screen is a formality, but the button still has to be clicked and the pop-up allowed. Complete the reCAPTCHA, enter the UserID and PIN, and click Sign and Submit.

The submission confirmation appears as a modal. On Safari this modal sometimes fails to render, which leaves the applicant with no way to know whether the submission actually went through. Use desktop Firefox or Edge, as noted above.

After you submit

A confirmation email from eForms arrives with a control number. Save it. The application status tracks on the eForms dashboard under "Submitted."

If an EFT file was uploaded and the system accepts it, no further fingerprint action is required. If the EFT is rejected, the cover letter states so, and two FD-258 cards per responsible person must be mailed within ten days to the address in the cover letter.

Mail the CLEO copy of the Form 1, plus a copy of Form 5320.23 for each responsible person for trust filings, to the CLEO entered at Stop 6. A tracked mail service is worth the few extra dollars. Keep the receipt.

Then wait. The approved Form 1 arrives by email with a digital stamp. ATF emails routinely land in "Promotions" or "Spam" folders; check filters periodically. The approved PDF is the document that proves registration and is required to possess and use the finished item.

For a full breakdown of every status the portal displays between submission and approval, see: Understanding eForm statuses: what each stage means.

The rejection triggers, ranked

Most rejections are administrative and preventable. In rough order of frequency:

Biographic mismatches. Name or address on the form does not match government ID or trust documents. Abbreviations are the usual culprit.
Trust name mismatch. An added, omitted, or misspelled word in the trust name. Copy-paste from the trust document rather than retyping.
Missing trust schedules. Schedule A and Schedule B have to be inside the uploaded PDF. Uploading the trust body alone is treated as an incomplete document.
Line-item errors. Unverified manufacturer, model not matching engravings, barrel length measured incorrectly, caliber entered as slang rather than the engraved specification.
Invalid photos. Hats, sunglasses, busy backgrounds, photos older than six months.
Inserted signatures on Form 5320.23. Typed names or image-pasted signatures instead of a scanned wet-ink original.
Wrong answer on a prohibited-person question. Usually a typo, usually unrecoverable.

An administrative rejection can be re-filed, but each cycle costs weeks of queue time. Two quiet minutes rechecking Stop 4 and Stop 7 before submitting saves more time than any other step in the workflow.

What this costs in 2026

Item	Cost	Notes
Tax stamp	$0	SBR, SBS, suppressor, or AOW. $200 for machine gun or destructive device.
Trust document	$50–$300 one-time	If applicable. Template service or attorney. A trust is a long-term asset, not a per-filing cost.
EFT file via SLAP & ROLL	$20 (Pay-As-You-Go)	One file covers every Form 1 and Form 4 the applicant submits as long as biographic data stays current. Trusts with three or more responsible persons generating files together may find Pro ($50/mo) cheaper than stacking Pay-As-You-Go credits across all RPs.
Passport photo	$0–$5	$0 if taken at home against a white wall. A few dollars at a drugstore photo counter.
FD-258 cards and ink	Under $20	Only if rolling prints at home. Available from law-enforcement supply vendors.

Most individual filers spend $20 total on SLAP & ROLL and nothing else on the submission itself. A trust adds the one-time trust-document cost but adds nothing per form.

For the step-by-step process of converting your fingerprint card into an EFT file, see: How to convert an FD-258 fingerprint card to an EFT file at home.