Which Form SS-4 Lines Decide an LLC’s Tax Classification?
Four lines decide it: line 8a marks the entity as an LLC, line 8b gives the member count, line 8c asks whether the LLC elects corporate taxation, and line 9a names the classification the IRS records.
| SS-4 line | What it asks | What it controls |
|---|---|---|
| Line 7a | Name of the responsible party | The one human being the IRS holds accountable for the LLC |
| Line 7b | SSN, ITIN, or the entry Foreign | Whether the online tool is available, not the classification |
| Line 8a | Is this application for an LLC? | Opens the 3 LLC-only fields that follow |
| Line 8b | Number of LLC members | The default: 1 member disregarded, 2 or more partnership |
| Line 8c | Is the LLC electing corporate taxation? | Whether Form 8832 or Form 2553 governs instead of the default |
| Line 9a | Type of entity | The filing account the IRS opens and the return it expects |
| Line 9b | State or country of incorporation | Where the LLC was organized, matched against the Articles |
| Line 11 | Date the business started | The formation date the state recorded, not the signing date |
Source: IRS Form SS-4 and its instructions, verified July 2026.
Line 8b carries more weight than any other field on the form. It is a single digit, and it decides whether the LLC files nothing separately or files Form 1065 with a Schedule K-1 for every member, every year. Deeper reading sits on LLC Tax Classification and what is a disregarded entity.
What Tax Classification Does the IRS Assign an LLC by Default?
The IRS assigns a 1-member LLC disregarded-entity status and a 2-or-more-member LLC partnership status. No form is filed to get the default. It applies automatically under Treasury Regulation 301.7701-3.
| Your situation | Classification | Annual federal return | Who pays the tax |
|---|---|---|---|
| 1 member, individual owner | Disregarded entity | Schedule C with Form 1040 | The member |
| 1 member, company owner | Disregarded entity | None separately | The parent company |
| 1 member, non-US owner | Disregarded entity | Form 5472 + pro-forma Form 1120 | The member |
| 2 spouses, community-property state | Disregarded entity | Schedule C with Form 1040 | The couple |
| 2 spouses, other 41 states | Partnership | Form 1065 + Schedule K-1 | Each spouse |
| 2 or more members | Partnership | Form 1065 + Schedule K-1 | Each member |
| Form 8832 filed | C corporation | Form 1120 | The LLC, at 21% |
| Form 2553 filed | S corporation | Form 1120-S + Schedule K-1 | Each member |
Source: Treasury Regulation 301.7701-3 and IRS Form SS-4 instructions, verified July 2026.
Notice what is absent from this table: revenue, industry, and state of formation. None of them touch federal classification. Two LLCs with the same member count get identical treatment no matter what either one earns. Only the count of members, the identity of those members, and an election change the answer.
The default costs nothing and requires no filing, which is why most LLCs keep it. An LLC that wants a default classification writes it on line 9a of Form SS-4 and stops there. Form 8832 and Form 2553 exist only to move an LLC off the default, and neither is needed to stay on it.
Member count is measured on the day the question is asked, not at formation. An LLC that starts with 1 member and admits a 2nd becomes a partnership from that date, and the reverse move back to 1 member makes it disregarded again. Those 2 transitions are governed by Rev. Rul. 99-5 and Rev. Rul. 99-6.
What Do You Write on Form SS-4 Line 9a?
A single-member LLC checks Other and writes Disregarded entity. A multi-member LLC checks Partnership. An LLC electing corporate treatment checks Corporation and enters form number 1120 or 1120-S.
| LLC type | Line 8c | Exact line 9a entry |
|---|---|---|
| Single-member, individual owner | No | Other: “Disregarded entity - sole proprietorship” |
| Single-member, company owner | No | Other: “Disregarded entity” |
| Multi-member | No | Partnership |
| Electing C corporation | Yes | Corporation: form number 1120 |
| Electing S corporation | Yes | Corporation: form number 1120-S |
Source: IRS Instructions for Form SS-4, line 9a guidance, verified July 2026.
The trap here is the word Corporation. An LLC is never a corporation under state law, so checking that box without filing Form 8832 or Form 2553 opens a Form 1120 filing account the LLC never intended. The IRS then expects a corporate return, and it mails notices when none arrives.
Line 9a works together with 2 fields above it. Line 8a asks whether the entity is an LLC, and the answer is Yes. Line 8b asks the member count, and that number drives the default. An LLC that enters 1 on line 8b and Partnership on line 9a has contradicted itself, and the IRS resolves the conflict by reading 8b.
Line 9a sets the filing account, not the tax outcome on its own. Whatever is written there tells the IRS which annual return to expect, and the LLC receives notices when the return that arrives does not match. Correcting the entry after the fact means Form 8832, which then locks the classification for 60 months.
How Is an LLC Owned by a Married Couple Classified?
In the 9 community-property states, an LLC owned only by 2 spouses can be treated as a disregarded entity under Revenue Procedure 2002-69. In the other 41 states it defaults to a partnership.
The 9 community-property states are Arizona, California, Idaho, Louisiana, Nevada, New Mexico, Texas, Washington, and Wisconsin. Two spouses in Texas can run their LLC as one disregarded entity and report it on a single Schedule C. Two spouses in Wyoming or Delaware own a 2-member LLC, which is a partnership that owes Form 1065 and 2 Schedule K-1s every year.
The choice is consistent, not annual. Once the couple treats the LLC one way, both spouses report it that way, and switching later is a classification change that follows the same rules as any other. The quiz asks this question only when you answer that the members are 2 spouses.
Revenue Procedure 2002-69 sets 3 conditions. The LLC is owned solely by the 2 spouses as community property, no other person holds an interest, and the entity is not treated as a corporation. An LLC that admits a 3rd member, even a child, fails the test and files Form 1065 from that year.
The practical difference is 1 return against 2 filings plus 2 K-1s. Disregarded treatment puts the result on a single Schedule C inside the couple's joint Form 1040. Partnership treatment adds a separate Form 1065 due March 15, a month before the personal deadline, and a per-partner late penalty that runs twice over for a 2-member LLC.
How Is a Foreign-Owned LLC Classified?
Identically to a US-owned LLC. A 1-member foreign-owned LLC is a disregarded entity, and a multi-member one is a partnership. The owner’s nationality changes the reporting, never the classification.
| Structure | Extra federal filing | Penalty for missing it |
|---|---|---|
| Foreign-owned single-member LLC | Form 5472 with a pro-forma Form 1120, due April 15 | $25,000 per year, IRC 6038A |
| Partnership with a foreign member | Withholding on effectively connected income, IRC 1446 | Interest and penalties on unwithheld tax |
| 25%-foreign-owned electing corporation | Form 5472 attached to the Form 1120 | $25,000 per year, IRC 6038A |
| LLC with a non-US member filing Form 2553 | Election terminated under IRC 1361(b)(1)(C) | Taxed as a C corporation on Form 1120 |
Source: Internal Revenue Code sections 6038A, 1446, and 1361, plus Treasury Regulation 301.7701-2(c)(2)(vi), verified July 2026.
The Form 5472 obligation is the one most foreign owners meet late. It attaches from year one, it is due even with $0 of revenue and $0 of profit, and the $25,000 penalty applies per year for each year the form is missing. The EIN is the number that return is filed under, which is why the EIN comes before any bank account. Full detail sits on Form 5472 and EIN for a Foreign-Owned LLC.
No SSN. No passport upload.
How Do You Change an LLC’s Tax Classification?
File Form 8832 for corporate treatment or Form 2553 for S corporation treatment. Both are filed after the EIN issues, both keep the same 9-digit EIN, and both carry a hard deadline.
| Election | Form | Deadline | Resulting annual return |
|---|---|---|---|
| Taxed as a C corporation | Form 8832 | Effective 75 days before to 12 months after filing | Form 1120 |
| Taxed as an S corporation | Form 2553 | 2 months and 15 days after the tax year starts | Form 1120-S |
| Back to the default | Form 8832 | Locked for 60 months after a prior election | Schedule C or Form 1065 |
Source: IRS Instructions for Form 8832 and Form 2553, verified July 2026.
Neither election requires a new EIN. That is the single most misunderstood point in this whole area: an LLC that elects S corporation status on Form 2553 keeps the exact number printed on its CP-575 letter. A new EIN is required only when the structure itself changes, which the how to file Form 8832 page works through line by line.
The 2 forms are not alternatives so much as 2 steps that sometimes combine. Form 2553 alone carries an LLC to S corporation treatment, because the IRS reads a valid Form 2553 as electing corporate status and S status together. Form 8832 is needed on its own only when the target is a C corporation.
Deadlines are the part that bites. Form 2553 is due within 75 days of the start of the tax year the election takes effect, and a late filing pushes S status to the following year unless the LLC qualifies for relief under Rev. Proc. 2013-30. Form 8832 reaches back 75 days and forward 12 months from its filing date.
What Happens If Line 9a Is Wrong on the SS-4?
The IRS opens the wrong filing account and expects a return the LLC never owed. Correction takes a written letter, and the paper round trip runs 4 to 8 weeks with no tracking number.
Partnership marked on a 1-member LLC. The IRS expects Form 1065 every year. The LLC receives late-filing notices for a return it never owed.
Corporation marked with no election on file. A Form 1120 account opens without Form 8832 backing it, so the LLC owes a corporate return it never elected.
Member count entered as 1 on a 2-member LLC. Disregarded treatment applies to an LLC that legally owes Form 1065 and 2 Schedule K-1s.
A company named as the responsible party on line 7a. The IRS requires a human being on line 7a. A parent LLC or a filing agent there triggers rejection.
The LLC name off by one character. LLC against L.L.C. fails the match with state records, and the application is rejected by mail.
None of these errors surface on the day of filing. They surface months later, in the mail, at the address on line 4. Running the quiz before the form goes in is 4 questions; unwinding a wrong line 9a is a letter and a 4-to-8-week wait.
Who Should Pay to Have the SS-4 Filed?
Almost nobody with a Social Security Number. The IRS charges $0 and issues the EIN in 15 minutes online. Paying makes sense when the online tool is closed to you and the classification is unclear.
| Have an SSN? | Go to irs.gov. Free, 15 minutes, Monday to Friday, 7 a.m. to 10 p.m. Eastern. Do not pay anyone, including us. |
| No SSN? | Line 7b takes the entry Foreign. Fax Form SS-4 to 855-641-6935 from a US-based entity or 855-215-1627 from abroad, and wait 4 to 8 weeks. Or we fax it within 7 business days for $97, with the EIN in 16–19 business days, or file within 24 hours for $127 with the IRS call included and 6 to 8 business days in total. |
The routing question is not about money so much as access. The IRS online assistant closes to anyone without an SSN or ITIN, and that single restriction decides the route for most foreign owners. An applicant who holds an SSN and a clear structure has no reason to pay anyone, and this page says so.
Still deciding whether the EIN is required at all? Start with Does My LLC Need an EIN, or get started with the filing team. Term definitions live in the llc ein terms glossary.
What Does Each LLC EIN Filing Route Cost and Include?
The IRS charges $0 on every route and reviews no classification. Paid services run $59.99 to $200, and only einforllc.co checks lines 8a, 8b and 9a and states a filing deadline in writing.
| Route | Price | Time to EIN | Classification reviewed |
|---|---|---|---|
| IRS online, with an SSN or ITIN | $0 | 15 minutes | You decide |
| IRS fax, Form SS-4, no SSN | $0 | 4 to 8 weeks | You decide |
| einforllc.co Standard | $97 | 16–19 business days, faxed within 7 in writing | Yes, lines 8a, 8b, 9a on every order |
| einforllc.co Fast | $127 | 6 to 8 business days, filed within 24 hours | Yes, lines 8a, 8b, 9a on every order |
| Northwest | $200 | No written deadline | No |
| ZenBusiness | $99 | No written deadline | No |
| Rocket Lawyer | $59.99 | No written deadline | No |
Competitor prices verified July 2026. IRS fee verified July 2026.
What the $97 buys.The Articles reviewed character by character against the name on the form, lines 8a, 8b, and 9a checked against your real structure, Form SS-4 prepared and filed by fax within 7 business days, or that fee is refunded, and the 9-digit EIN plus the official CP-575 letter in 16–19 business days. The $127 Fast tier files and makes the IRS call within 24 hours, guaranteed, or that fee is refunded, for 6 to 8 business days in total. Business days are Monday to Friday excluding US federal holidays. Year 2 and every year after costs $0 for the EIN, because an EIN never renews. The EIN is priced on its own: if your LLC already exists, that is the whole invoice, and we will tell you to skip the optional $197 formation add-on rather than sell it to you. That add-on covers the state filing, the first-year registered agent, and the operating agreement, with state fees passed through at cost and the agent renewing at $99 a year.
No SSN. No passport upload.
This tool states federal tax rules current as of July 2026. It is not legal or tax advice. Confirm your LLC’s position with a licensed CPA or attorney before filing.