A disregarded entity name is the legal name of a business the IRS treats as inseparable from its owner for federal income tax purposes, most often a single-member LLC. The IRS ignores the entity when it comes to income tax, so the owner reports the business activity on a personal return. The name itself is not ignored. It’s the identity the business carries on contracts, bank accounts, W-9s, payroll filings, and state registrations, and using it correctly in each of those places is what keeps your records clean and your liability shield intact.
Which Businesses Have a Disregarded Entity Name
“Disregarded entity” is a federal tax classification, not a business type. Three structures fall under it:
- A single-member LLC, by default. Form an LLC with one owner and don’t file Form 8832 to elect corporate treatment, and the IRS automatically classifies it as disregarded. Nothing to apply for.1Internal Revenue Service. Limited Liability Company (LLC)
- A Qualified Subchapter S Subsidiary (QSub), which is a domestic corporation wholly owned by an S corporation parent that has elected QSub treatment. The subsidiary’s assets, liabilities, and income roll up into the parent.2Office of the Law Revision Counsel. 26 U.S. Code 1361 – S Corporation Defined
- A qualified joint venture, which is a business co-owned by spouses who both materially participate and file jointly. Each spouse reports a share on a separate Schedule C. This one cannot be structured as an LLC or partnership under state law, so it doesn’t have an “entity name” in the same sense.
The rest of this article focuses on the single-member LLC, because that’s where the naming questions actually come up.
The legal name is whatever you registered when you filed your articles of organization with the state. It typically ends in “LLC” or “Limited Liability Company.” That’s the name the IRS knows the entity by, even while it disregards the entity for income tax.
Where the Disregarded Entity Name Goes on Form W-9
Form W-9 is where the naming rule confuses the most people. Clients and vendors use it to collect your taxpayer identification information, and the IRS instructions are specific: Line 1 gets the owner’s name, and Line 2 gets the disregarded entity’s name.3Internal Revenue Service. Instructions for the Requester of Form W-9
The logic tracks the classification. For income tax purposes, you are the taxpayer, so your name goes first and is paired with your SSN or EIN. The LLC name goes on Line 2 so the requester knows which business they’re paying. Reversing the two lines is a frequent error that produces IRS name/TIN mismatches and can delay payments or trigger backup withholding.
Where the Name Goes on Payroll and Excise Filings
Employment and excise taxes are the one area where “disregarded” stops applying. For those filings, the LLC is treated as a separate employer or taxpayer, and everything is filed under the LLC’s own name and EIN, not the owner’s.4Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide
That means:
- Form 941 quarterly payroll returns go under the LLC’s name and EIN.
- W-2s issued to employees show the LLC as the employer, and W-3 transmittals to the Social Security Administration follow the same name.
- Form 720 and other federal excise tax returns use the LLC’s EIN.5Internal Revenue Service. Instructions for Form SS-4 Application for Employer Identification Number
Filing any of these under the owner’s name instead of the LLC’s creates mismatched records at the IRS and Social Security Administration, and the fix is not quick. Get the entity’s name and EIN on the forms from the start.
The Name on Contracts, Bank Accounts, and DBAs
Contracts, leases, permits, business licenses, and bank accounts should all carry the LLC’s registered legal name. That’s what tells the world you are transacting as the entity, not personally, and that separation is the reason you formed the LLC in the first place.
When you open a business bank account, expect the bank to ask for the entity’s legal name, its EIN or your SSN, your articles of organization, and personal identification for anyone with 25 percent or more ownership. A disregarded entity without employees or excise tax obligations can technically use the owner’s SSN, but many banks prefer an EIN.6Internal Revenue Service. Single Member Limited Liability Companies If the LLC operates under a trade name, the bank will usually want a DBA certificate too.
That trade name is a separate thing from the entity name, and the two get confused constantly. A DBA (also called a fictitious or assumed name) is just a public-facing alias. If Greenfield Consulting LLC markets itself as “Greenfield Digital,” “Greenfield Digital” is a DBA. The legal name on the contract, the lease, and the bank signature card is still Greenfield Consulting LLC. A DBA on its own, held by an individual with no LLC behind it, creates no separate entity and no liability protection.
When the Entity Needs Its Own EIN
A single-member LLC with no employees and no excise tax obligations can use the owner’s SSN or existing EIN for federal income tax reporting.6Internal Revenue Service. Single Member Limited Liability Companies The LLC must have its own EIN, though, if any of the following apply:
- It has employees. Payroll filings must be under the LLC’s name and EIN.4Internal Revenue Service. Publication 15 (2026), (Circular E), Employer’s Tax Guide
- It has federal excise tax obligations.5Internal Revenue Service. Instructions for Form SS-4 Application for Employer Identification Number
- A foreign person owns it (see below).
- State law requires one, regardless of the federal rule.
Plenty of owners get an EIN even when it isn’t required, just to avoid handing their SSN to every client who sends a W-9. Applying is free through IRS.gov.
Keeping the Name Consistent Protects the Liability Shield
The liability protection you get from an LLC comes from state law, not from federal tax classification, so disregarded entity status doesn’t weaken it. What weakens it is treating the entity as though it were you. Courts can pierce the veil when an owner mixes personal and business funds in one account, fails to keep separate records, has no operating agreement, or leaves the entity too undercapitalized to pay its own debts. Single-member LLCs draw more scrutiny on these formalities than multi-member ones, because there’s no co-owner keeping the books honest.
The most basic formality is naming. Sign contracts and issue invoices in the LLC’s legal name, keep a dedicated bank account in that name, and document major decisions in writing. Every time you sign personally for something the LLC should be signing for, you hand a future plaintiff another piece of evidence that you and the entity are the same person.
Foreign-Owned Entities and State Taxes
Two boundaries worth knowing.
A U.S. disregarded entity owned by a foreign person has to obtain its own EIN and file Form 5472 attached to a pro forma Form 1120 each year, reporting transactions with the foreign owner or other related parties. This applies even though the entity is disregarded for income tax. The penalty for failing to file on time is $25,000, with an additional $25,000 for each 30-day period the failure continues past a 90-day IRS notice. A substantially incomplete form counts as not filed.7Internal Revenue Service. Instructions for Form 5472
And federal disregarded status doesn’t carry over to every state. Several states impose their own annual franchise tax, minimum tax, privilege tax, or revenue-based fee on LLCs regardless of federal classification. Check your state’s department of revenue or franchise tax board before assuming the entity has no separate state filings.