Get an EIN for Your Mississippi LLC — Free at IRS.gov (2026)
Your EIN is your LLC's federal tax ID — required for banking, hiring, and registering with the Mississippi Department of Revenue. It's 100% free at IRS.gov and takes about 15 minutes. Here's the Mississippi sequence, including the no-SSN path and the state tax registration that follows.
Apply for your EIN free at IRS.gov — never pay a third party. With an SSN or ITIN, the online application takes about 15 minutes and issues your EIN immediately. Without one, file Form SS-4 by fax (≈4+ business days) or mail (≈4+ weeks). Apply after your Certificate is approved so IRS records match your exact legal name and formation date. Then register with the Mississippi Department of Revenue through the Taxpayer Access Point (TAP) for withholding and the 7% sales tax as applicable.
- Cost
- $0 — always free
- Where
- IRS.gov only
- Online time
- ~15 minutes
- Online issuance
- Immediate
- No SSN? (SS-4 fax)
- ~4+ business days
- After EIN
- MS Dept. of Revenue (TAP)
What an EIN Is (and Why Every Mississippi LLC Needs One)
An EIN (Employer Identification Number) is the nine-digit federal tax ID the IRS assigns your business. You need one even with zero employees:
- Open a business bank account — every bank wants the EIN letter, your confirmed Certificate, and your operating agreement.
- Register with the Mississippi Department of Revenue — your state tax accounts key off the EIN through the Taxpayer Access Point (TAP).
- File federal and Mississippi taxes — including the flat 4.0% state income tax on pass-through profits.
- Protect your SSN — put your EIN on W-9s instead of your personal number.
Never pay for an EIN. The IRS charges nothing. Sites charging $50–$300 for "EIN filing" resell a free government form, often styled to look official. The only site you need is IRS.gov.
Which Application Method Should You Use?
EIN Path Picker — Mississippi Edition
2 questions · your exact path, timeline, and Mississippi next step
The IRS online assistant runs Mon–Fri during posted hours and issues one EIN per responsible party per day. All methods are free.
The Online Application, Step by Step
Wait for approval first
Your EIN must match your final legal name and formation date. File through the Secretary of State's portal and you'll typically have approval within about a week or less.
Go to the IRS EIN Assistant
IRS.gov → "Apply for an Employer ID Number." Choose "Limited Liability Company," then Mississippi.
Enter members and responsible party
Member count sets your default classification — disregarded entity for one member, partnership for two-plus — and the responsible party provides their SSN/ITIN.
Complete in one session
The application times out after 15 idle minutes with no save. Keep your confirmed Certificate in front of you.
Download the CP 575 immediately
Your confirmation letter displays once. Banks and TAP will ask for it; a replacement means calling the IRS for Letter 147C.
No SSN? You Can Still Get an EIN
Non-US founders complete Form SS-4, write "Foreign" on line 7b, and submit by fax (~4+ business days) or mail (~4+ weeks). Line-by-line help in our guides to EINs without an SSN and foreign-owned LLCs. Foreign-owned single-member LLCs: remember Form 5472 — a $25,000 penalty applies even at zero income.
After You Get Your EIN — the Mississippi Sequence
- Open your business bank account — CP 575, confirmed Certificate, operating agreement.
- Register with the Mississippi Department of Revenue via TAP — withholding if hiring, and a Sales Tax Permit if you sell taxable goods.
- Calendar April 15 for your free annual report.
Ahmad Adil's Take: the EIN is the one step where "cheap" and "right" are the same thing — free, from the source, in fifteen minutes. If any site or upsell asks you to pay for it, that tells you exactly how they make money. The Mississippi-specific move comes right after: register with the Department of Revenue through TAP in the same sitting, while your EIN letter is already open. Mississippi's state tax setup is genuinely simple compared to some states — don't let a strong start on the EIN turn into a delayed follow-through on the TAP registration.
- ✓Forms your Mississippi LLC for $39 + the $50 state fee
- ✓Files online with the Secretary of State
- ✓Free Mississippi registered agent the first year
- ✓No upsells · No data selling · Privacy by Default
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Mississippi LLC — FAQ
Ahmad Adil is the founder and CEO of LLC School. The figures here — the $50 Certificate of Formation, the free annual report due April 15, and Mississippi’s flat 4.0% income tax on earnings above $10,000 — reflect current Mississippi Secretary of State and Department of Revenue guidance. This is educational content, not legal or tax advice.
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