Getting an EIN for Your New York Corporation

An Employer Identification Number is the IRS-issued, nine-digit federal tax ID. Think of it as the corporation's Social Security number — the identifier it uses on tax filings, bank accounts, payroll, and countless business forms.

Corporations always need one

Here's a key difference from an LLC: a single-member LLC with no employees can sometimes operate on the owner's Social Security number. A corporation cannot. Because a corporation is a separate taxpayer that files its own federal return, it must have its own EIN from the start. This isn't a maybe — it's a requirement the moment you incorporate.

What you'll use it for

• Filing the corporation's federal tax returns. A corporation files its own return, and the EIN identifies it.
• Opening a business bank account. No bank will open a corporate account without the EIN.
• Hiring employees and running payroll. Federal and state employment tax accounts key off the EIN.
• Making an S-corporation election. IRS Form 2553, if you elect S-corp treatment, requires the EIN.
• Business credit, licenses, and vendor accounts. These commonly ask for the number.

The EIN is one of the first things you get after your Certificate of Incorporation is filed, because so much else — the bank account, payroll, tax elections — waits on it.

The IRS issues EINs directly and for free. Be wary of any site that charges you for "getting an EIN" — the number itself costs nothing from the government.

Applying online (the fast path)

The quickest route is the IRS EIN Assistant. The online application:

• Takes roughly ten minutes to complete.
• Issues the EIN immediately upon completion — you can download the confirmation letter and use the number the same day.
• Is available during the IRS's stated online hours.

To apply online, the responsible party — generally an individual who controls the corporation, such as a principal officer — needs a valid US Social Security number or ITIN. The responsible party must be a real person, not another entity.

Applying without an SSN or ITIN

If your responsible party doesn't have an SSN or ITIN — common for foreign founders — you can't use the online tool. Instead, you complete Form SS-4 and submit it to the IRS by fax or mail. This route takes longer, but it's how international owners obtain an EIN for a US corporation.

Have your details ready

Before you start, have your filed Certificate of Incorporation, the corporation's exact legal name and New York address, and the responsible party's information on hand. Small mismatches between the name on the EIN application and the name on your state filing can cause headaches later, so keep them consistent.

The EIN is federal, but it's also the thread that ties your federal identity to your New York state tax registrations. Getting the EIN is step one; it's not the end of your tax setup.

New York tax registrations

Depending on what your corporation does, you may need to register with the New York Department of Taxation and Finance for one or more accounts:

• Corporate franchise tax. New York corporations are subject to franchise tax; your corporation is on the tax department's radar as a New York corporation.
• Sales tax. If you sell taxable goods or certain services, you register for a Certificate of Authority to collect and remit sales tax.
• Withholding tax. If you have employees working in New York, you register for withholding.

Each of these ties back to your EIN. The EIN is the federal anchor; the New York registrations layer state obligations on top of it.

Don't conflate the two

A frequent point of confusion: the EIN does not register you for New York taxes, and your New York registrations don't get you an EIN. They're separate steps with separate agencies — the IRS federally and the Department of Taxation and Finance at the state level. Handle both.

The EIN process is simple, but a few avoidable errors cause real friction down the line.

Paying for something that's free

The most common mistake is paying a third-party site that presents itself as "the EIN office." The IRS issues EINs at no charge. If you get an EIN as part of a formation package, that's fine — you're paying for the service of handling it — but the underlying number is always free from the government.

Applying before you're formed

Get your Certificate of Incorporation filed and accepted before applying, so the corporation legally exists and its name is settled. Applying for an EIN under a name that then changes or doesn't clear at the state creates a mismatch you'll have to untangle.

Name and responsible-party inconsistencies

Use the corporation's exact legal name as filed, and name a real individual as the responsible party. Inconsistencies between your EIN records and your state filing can complicate bank onboarding and future filings.

Losing the confirmation

Save the IRS confirmation letter (the CP 575) somewhere permanent. Banks and agencies ask for it, and while you can request a replacement, it's far easier to keep the original. Store it with your Certificate of Incorporation and bylaws in your corporate records.

When we form your New York corporation, we can obtain the EIN as part of the process, so the corporation comes out of formation ready to open a bank account and set up payroll without you separately navigating the IRS application. You provide the responsible party's information; we handle the request and deliver the number and confirmation.

For corporations with a US responsible party, the online path issues the EIN immediately. For foreign founders without an SSN or ITIN, the SS-4 route takes longer, and we'll set expectations accordingly rather than promise a same-day number that the IRS process can't deliver.

What stays separate

The EIN is federal. Your New York state tax registrations — franchise tax, sales tax, withholding — and your actual tax returns are matters for the Department of Taxation and Finance and your CPA. We make sure the corporation has its federal identifier in hand; the ongoing tax relationship with New York is coordinated through your accountant.