Form SS-4, Application for Employer Identification Number (EIN)
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JustFill helps prepare an SS-4 PDF. It does not apply for you, submit the form, or issue an EIN; the IRS is the only issuer, and eligible applicants can use its online EIN assistant free of charge.JustFill is not affiliated with Internal Revenue Service (IRS). This is an independent third-party tool to help you complete Form SS-4. Always download the current blank form from the official source and verify your completed copy before signing or submitting. Official Form SS-4 from Internal Revenue Service (IRS)
Form SS-4, Application for Employer Identification Number (EIN), is the IRS form a business or other entity uses to request a nine-digit federal EIN for tax filing and reporting. The owner or responsible party completes it. JustFill helps prepare the PDF and includes the first clean completed download; it does not submit the application or issue an EIN. Eligible US applicants can instead apply directly through the free IRS online EIN assistant.
Stop re-typing Name, SSN/EIN, and Street Address across separate forms. Launch a pre-built JustFill B2B Packet to enter shared fields once and download a ZIP or merged PDF.
Enter contractor and payer details once to fill the W-9 and the 1099-NEC copy for the recipient.
Shared fields: Contractor Name, Address, TIN, Payer Details, Box 1a Compensation
IRS Form W-4 + USCIS Form I-9
IRS Form W-9 + IRS Form 1099-NEC (Copy B)
IRS Form 2848 (POA) + Form 8821 + Form 4506-T Transcript
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Combine Form SS-4 with companion documents (e.g. W-9 + Direct Deposit Authorization + NDA, or I-9 + W-4 + State Withholding, or 2848 + 8821 + Tax Organizer) or batch-generate hundreds of copies from Excel/CSV.
Form SS-4 (often searched as the ss 4 irs form or irs form ss 4 pdf) is the IRS Application for Employer Identification Number (EIN), the document used to request the nine-digit number (formatted like 12-3456789) that the IRS assigns to businesses and other entities for tax filing and reporting. Whether you are preparing an online ss4 worksheet before using the IRS ss4 online application or completing the paper form ss 4 apply online PDF to submit by fax or mail, sole proprietors, LLCs, corporations, partnerships, estates, trusts, churches, and nonprofits answer the same Lines 1–18 questions. JustFill detects every line and checkbox on the IRS Form SS-4 PDF so you can prepare and review the entity name, responsible party, entity type, and reason for applying — or batch-fill SS-4, Form 2553, Form 2848, and W-9 formation packets from Excel/CSV.
When founders, CPAs, and entity-formation teams search for an online ss4 or ss4 online application, they are choosing between two ways to submit the exact same 18 lines of entity data on the ss 4 irs form. If the responsible party has a valid U.S. Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN) and the business is formed in the United States or U.S. territories, you can form ss 4 apply online through the IRS online EIN assistant during operating hours and receive an EIN confirmation letter (CP 575) immediately.
However, completing the official irs form ss 4 pdf as an online ss4 worksheet in JustFill first — before starting the ss4 online application session — prevents the 15-minute IRS portal timeout, creates a signed archival PDF for your corporate minute book or bank onboarding packet, and is mandatory when the responsible party is a foreign individual without an SSN/ITIN who must fax or mail the signed ss 4 irs form to the IRS EIN International Operation.
Related Internal Revenue Service (IRS) & B2B Compliance Forms
Open the irs form ss 4 pdf (Form SS-4, Rev. December 2025) directly in JustFill using the button above, or download the blank ss 4 irs form PDF and separate instructions from the IRS. Then upload that PDF to JustFill to prepare and print a completed online ss4 copy in your browser without Adobe Acrobat (or bulk-fill multiple entities from Excel/CSV). JustFill does not submit the form to the IRS; eligible US applicants can also use the free IRS ss4 online application (online EIN assistant) to form ss 4 apply online.
What each section of Form SS-4 asks for. JustFill’s AI will detect these fields automatically when you upload the PDF — review the breakdown below so you know what to enter.
The exact legal name of the business, estate, trust, or individual for whom the EIN is being requested.
Line 2 is a doing-business-as (DBA) name if different from line 1; line 3 names the executor, administrator, trustee, or 'care of' contact for estates and trusts.
Line 4a–4b is the mailing address (a P.O. box is allowed); line 5a–5b is the physical street address if different (no P.O. box permitted here).
The individual who ultimately owns or controls the entity, plus that person's SSN, ITIN, or EIN. Nominees are not allowed as the responsible party.
Whether the application is for an LLC (or foreign equivalent), the number of LLC members (8b), and whether the LLC was organized in the United States (8c).
Identifies the entity type: sole proprietor, partnership, corporation, S corporation/personal service corporation, estate, trust, church, nonprofit, government, and others.
Why you need the EIN: started a new business, hired employees, banking purpose, changed type of organization, purchased a going business, created a trust, or created a pension plan.
Date business started (11), accounting year closing month (12), highest number of employees expected (13), Form 944 election (14), first wages paid (15), principal business activity (16), line of merchandise/services (17), and whether the entity previously received an EIN (18). The Third Party Designee and signature sections close the form.
A fictional sole proprietor is preparing an SS-4 after starting a design business. The example gathers the answers but does not contain a usable taxpayer number and is not an IRS submission.
ALEX EXAMPLE
A sole proprietor uses the individual's legal name here.
EXAMPLE DESIGN STUDIO
The fictional business operates under a different trade name.
100 SAMPLE STREET — AUSTIN, TX 78701
ALEX EXAMPLE — XXX-XX-6789
The real application requires the responsible party's actual identifying number; it is masked here.
Sole proprietor
Started new business — graphic design services
Select only the single reason that actually applies.
August 2026 — December — 0 / 0 / 0
This fictional business has no employees; the real filer uses its actual dates and expected employee counts.
These values are made up. They are here to show what belongs on each line, not to be copied — every name, number, and address on your own Form SS-4 has to be your own. LLCs, corporations, partnerships, estates, trusts, nonprofits, and applicants hiring employees complete several lines differently. Use the current IRS instructions rather than copying this sole-proprietor example.
Use the destination that matches where the entity has its legal residence, principal place of business, or principal office or agency. The IRS recommends applying online when the applicant is eligible.
Use this if the address is in: Entities with a legal residence, principal place of business, or principal office or agency in one of the 50 states or the District of Columbia
Use this if the address is in: Entities without a legal residence, principal place of business, or principal office or agency in any state or the District of Columbia
JustFill prepares the PDF only. Submit it through the IRS method appropriate to you and re-check these destinations immediately before sending because the IRS can change them without notice.
Checked against the official Internal Revenue Service (IRS) instructions on 2026-08-31. Destinations change — confirm on the Internal Revenue Service (IRS) page before you send anything.
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PDF, Word (.docx), JPG, PNG, WebP, HEIC, GIF and BMP. Instant field preview in browser, no credit card required.
First hand-filled PDF (up to 1 page) is free with no watermark. Need more or AI Auto-Fill? Grab the $7 7-Day Pass (25 clean PDF downloads + 25 AI credits, $7 credited toward $19/mo Starter).
By uploading, you confirm you have the legal right to use this document.
Form W-9: Request for Taxpayer Identification Number and Certification
Form 2553: Election by a Small Business Corporation
Form 8832: Entity Classification Election
Form 1065: U.S. Return of Partnership Income
Form 1120: U.S. Corporation Income Tax Return
Form 1120-S: U.S. Income Tax Return for an S Corporation
Form 990-EZ: Short Form Return of Organization Exempt From Income Tax
Form 2848: Power of Attorney and Declaration of Representative
Form 8821: Tax Information Authorization
Form 8879: IRS e-file Signature Authorization
Form 843: Claim for Refund and Request for Abatement
Form 1095-C: Employer-Provided Health Insurance Offer and Coverage
Schedule C (Form 1040), Profit or Loss From Business (Sole Proprietorship)
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Official source: Form SS-4 on Internal Revenue Service (IRS)’s website
Edition checked: Rev. December 2025. Verified against the official source on · Verified in our Government Forms Fillability Study.
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