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name: ss4-ein-application language: en description: Drafts IRS Form SS-4 (EIN Application) by extracting entity details from formation documents. Use when forming a new business entity, applying for a federal tax ID, or preparing EIN applications for corporations, LLCs, partnerships, or sole proprietorships. tags:

• corporate
• drafting
• letter

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IRS Form SS-4 — EIN Application

Prepares a filing-ready Form SS-4 by extracting verified data from entity formation documents.

Prerequisites

• Formation documents — Articles of incorporation/organization, certificate of formation, or partnership agreement (filed and stamped)
• Governing documents — Operating agreement, bylaws, shareholder agreements
• Responsible party info — SSN/ITIN, full legal name, title, phone number
• Business details — Principal office address (physical, not P.O. Box), mailing address, planned activities, employee projections

Quick Start

1. Extract data from source documents per the extraction map below
2. Cross-reference legal name across all documents — flag any discrepancies before proceeding
3. Complete each SS-4 line group using verified data
4. Run consistency checks
5. Produce deliverables: completed SS-4, transmittal memo, preparation notes

Document Extraction Map

Source Document	Extract
Articles of incorporation/organization	Legal name (exact), formation date, entity type, registered agent
Operating agreement / bylaws	Management structure, ownership %, officer titles, fiscal year, signing authority
Partnership agreement	General partner(s), management authority, ownership interests
DBA/assumed name filings	Trade names (Line 2)
Board resolutions	S corp election (Form 2553), signing authority
Business plan / org chart	Employee projections, NAICS code, business activity description
Lease agreements	Physical location address

Line-by-Line Completion

Lines 1–3: Entity Identification

• Line 1 (Legal name) — Character-for-character match to formation docs. Exact suffix as filed: "Inc." / "Incorporated" / "LLC" / "L.L.C." etc.
• Line 2 (Trade name / DBA) — Only if registered with state/local authority; otherwise blank
• Line 3 (Mailing address) — Street/P.O. Box, suite, city, state, ZIP, county

Lines 4–7b: Location & Responsible Party

• Line 4a–4b (Physical location) — Street address only (no P.O. Box). Source from lease or formation docs.
• Lines 5a–5b (Responsible party) — Individual who owns/controls entity. Determine by entity type:

Entity Type	Responsible Party
Sole proprietorship	Owner
Corporation	Principal officer per bylaws (president, CEO, CFO, treasurer)
Partnership	General partner with management authority
LLC (member-managed)	Controlling member by ownership %
LLC (manager-managed)	Managing member or manager per operating agreement

• Line 6 (SSN/ITIN) — Of responsible party. Flag if foreign individual lacks U.S. TIN.
• Lines 7a–7b (Phone/Fax) — Business telephone of responsible party

Lines 8–9a: Entity Classification

• Line 8a — One checkbox matching formation docs: sole proprietor/single-member LLC, partnership, corporation (C corp default), personal service corporation, nonprofit, or other (specify)
• Line 8b — S corp election: check if Form 2553 filed or will be filed. Search board resolutions and shareholder consents.
• Line 8c — Nonprofits only: check if Form 1023/1023-EZ/1024 filed for tax-exempt status
• Line 9a — Formation date from state-stamped filing. Must match exactly.

Lines 9b–16: Purpose & Operations

• Line 9b (Reason) — Primary reason: started new business, hired employees, banking, changed org type, purchased business, trust, pension plan, other
• Line 10 (First wage date) — Date wages first/will be paid; "N/A" if no employees
• Line 11 (Fiscal year close) — Month from governing docs; default December
• Lines 12–13 (Employees) — Agricultural vs. non-agricultural projections from business plan
• Line 14 (Principal activity) — Specific description (e.g., "retail sale of organic groceries" not "retail")
• Line 15 (Products/services) — Detailed revenue-generating offerings
• Line 16 (NAICS code) — 6-digit code matching principal activity. Verify against current NAICS manual.

Lines 17–18: Authorization & Signature

• Third-party designee — If attorney/CPA authorized: name, phone, 5-digit PIN
• Signature — Must be signed by authorized individual per governing documents:

Entity Type	Authorized Signer
Sole proprietorship	Owner
Partnership	General partner
Corporation	Officer authorized by bylaws
LLC	Member or manager per operating agreement

Include: printed name, title, signature line, date, phone number.

Consistency Checks

Before finalizing, verify:

• Line 1 legal name matches formation documents character-for-character
• Entity type (Line 8a) aligns with formation structure
• Corporation → Line 8b addresses S corp election status
• "Hired employees" (Line 9b) → Line 10 has specific date (not N/A)
• Nonprofit → Line 8c addresses exempt status filing
• Responsible party title matches governing document role
• Fiscal year (Line 11) matches governing docs
• NAICS code corresponds to Lines 14–15 activity description
• All addresses verified against source documents
• SSN/ITIN provided for responsible party

Deliverables

1. Completed Form SS-4 — All lines filled or marked N/A, matching official IRS layout
2. Transmittal memo — Entity name, responsible party, submission method, special circumstances
3. Preparation notes — Sources per section, assumptions, discrepancies resolved, recommended follow-up

Pitfalls

• Never fabricate or assume entity details — extract only from verified source documents
• Flag conflicts between formation documents (e.g., differing entity names) and resolve before completing
• If S corp election status is unclear, flag for client confirmation
• NAICS codes change periodically — verify against current classification manual
• Form revision date and OMB number must reflect the most recent official IRS version
• The completed form is a certification under penalties of perjury — all information must be verifiable