The rule for SS-4 lines 1 and 2The IRS says to enter the applicant’s legal name on line 1 exactly as it appears on the applicable legal document. Line 2 is for the trade or “doing business as” (DBA) name, if different. For an existing LLC, begin with the entity’s legal documents and identify which name each document actually shows.

Build one chain of names across four records

This review is for a U.S. LLC that already exists. It helps you prepare an EIN application and later compare its records. It does not register a DBA, amend the LLC’s legal name, or decide how the LLC is taxed.

  1. Start with the current legal document

    Find the applicable formation document and any effective name amendment. Copy the entity name exactly, including its legal suffix. Do not silently shorten it to fit a logo or substitute the owner’s personal name.

    Keep: document title, issuing state, date and private file location.

  2. Separate the two SS-4 entries

    Use the verified legal name for line 1. If the business has a different trade name, identify that separately for line 2. A website address or product slogan alone is not evidence that the LLC uses a DBA; resolve that fact from the business’s own records before entering it.

    Keep: proposed line 1, proposed line 2 and the document supporting each.

  3. Compare the IRS record when it arrives

    Retain your submitted SS-4 copy. When the EIN assignment notice arrives, compare the name shown with the application and legal documents. If something differs, record the exact difference and resolve it through the applicable IRS process; do not rewrite the notice or assume that sending a second application is the correction.

    Keep: notice type, date and private file location. See CP 575 and Letter 147C for the distinction between assignment and later verification.

  4. Check the next institution’s field labels

    A bank or service provider may ask separately for a legal business name and a DBA. Compare each requested field with the corresponding document. Preserve its exact request and any unresolved mismatch. This record organizes your evidence; each institution determines its own documentation requirements.

    Keep: requested field, name supplied, evidence requested and unresolved question.

A fictional LLC with two different names

Example Harbor LLC / Harbor Studio

Assume the LLC’s current state document says Example Harbor LLC, and its business records establish that it trades as Harbor Studio. Both names are fictional. DBA registration requirements are outside this example.

Legal document
Example Harbor LLC
SS-4 line 1
Example Harbor LLC
SS-4 line 2
Harbor Studio
Later comparison
Check the actual IRS notice, then compare the bank’s “legal business name” field with the legal name and its separate DBA field with the trade name.

If a draft application instead puts Harbor Studio on line 1, the review has identified a specific mismatch to correct before submission. It has not established whether any later application or bank account will be accepted.

Three situations to keep separate

  • No different trade name: do not invent a DBA merely to fill a second name field. The IRS line 2 instruction applies when the trade name differs from the legal name; review the current form’s general instructions for lines that do not apply.
  • A genuine legal name change: gather the effective amendment and the existing IRS record. That is an update to an existing business record, not the same question as preparing the two name fields for a first application.
  • Several brands or inconsistent spellings: list the variants in your private record and identify their sources. Resolve which name belongs to the applicant and which trade name, if any, belongs on the application before signing.

Keep a reusable name reconciliation record

The record below is an organizational aid from EINForeigner. It contains no tax identifiers and is not an IRS form. Download the blank text file and complete it in your own editor; nothing you type there is sent to this website.

LLC name reconciliation record

Seven sections: legal source, legal name, trade-name source, proposed SS-4 entries, IRS notice, institution request and unresolved differences.

Download blank record (.txt)

No account, email address or upload is required.

Sources and scope

The line 1 and line 2 rules come from the IRS Instructions for Form SS-4, checked October 30, 2026, and the corresponding fields in the official Form SS-4 (December 2025 revision). The four-record comparison, blank record and fictional example are our suggestions for organizing documents. They are not additional IRS filing requirements and do not establish a bank’s acceptance policy.