Get an EIN for Your Massachusetts LLC — Free at IRS.gov (2026)
After the $500 Certificate, savor this step: your EIN is completely free, takes 15 minutes, and no Massachusetts agency can charge you for it. Here's the sequence, the no-SSN path, and the MassTaxConnect 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 of Organization is approved so IRS records match your exact legal name and date — with same/next-day fax processing, that's typically within a day of filing. Then register with the Massachusetts DOR via MassTaxConnect for withholding and the 6.25% sales tax.
- 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
- MassTaxConnect (DOR)
What an EIN Is (and Why Every Massachusetts 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 stamped Certificate, and your operating agreement.
- Register with the Massachusetts DOR — your MassTaxConnect accounts (withholding, 6.25% sales tax, meals tax where applicable) key off the EIN.
- File federal and Massachusetts taxes — including the flat 5% 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. After Massachusetts' fees, third-party "EIN filing" sites charging $50–$300 may feel almost normal — they're not. They resell a free government form. The only site you need is IRS.gov, and this is the one step of your Massachusetts formation that costs exactly zero.
Which Application Method Should You Use?
EIN Path Picker — Massachusetts Edition
2 questions · your exact path, timeline, and Massachusetts 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. With Massachusetts' same/next-day fax processing, the wait is usually a day at most.
Go to the IRS EIN Assistant
IRS.gov → "Apply for an Employer ID Number." Choose "Limited Liability Company," then Massachusetts.
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 stamped Certificate in front of you.
Download the CP 575 immediately
Your confirmation letter displays once. Banks and MassTaxConnect will want 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 Massachusetts Sequence
- Open your business bank account — CP 575, stamped Certificate, operating agreement.
- Register with the Massachusetts DOR via MassTaxConnect — withholding if hiring, the 6.25% sales tax account if selling taxable goods, and the meals tax if you serve food.
- Check local requirements — city/town business certificates and permits in Step 7.
- Confirm your anniversary reminder exists — the $500 report clock is already running, and the state will never mention it.
Ahmad Adil's Take: Massachusetts founders develop a flinch — after the $500 Certificate and $520 quotes everywhere, they see "EIN filing service, $249" and assume that's just what things cost here. It isn't. The EIN is free in all fifty states, and Massachusetts can't touch it. My favorite way to frame this step: it's the day your Massachusetts LLC starts acting like a normal-priced business. Fifteen free minutes at IRS.gov, a free MassTaxConnect registration, a bank account — and from here on, the Commonwealth only bills you once a year.
- ✓Forms your Massachusetts LLC for $39 + the $500 state fee
- ✓Files with the Corporations Division — fast fax/online processing
- ✓Free Massachusetts resident agent the first year
- ✓No upsells · No data selling · Privacy by Default
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Massachusetts LLC — FAQ
Ahmad Adil is the founder and CEO of LLC School. The figures here — the $500 Certificate of Organization ($520 online/fax), the $500 anniversary-date annual report, and Massachusetts’ 5% flat income tax with the 4% surtax over roughly $1.08M — reflect current Secretary of the Commonwealth and Massachusetts DOR guidance. This is educational content, not legal or tax advice.
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