Getting an EIN for a New Hampshire LLP

An Employer Identification Number is a nine-digit federal tax ID the IRS assigns to a business. Think of it as a Social Security number for the partnership — it's how the IRS, banks, and other institutions identify your firm on tax filings and financial paperwork.

Why an LLP always needs one

A single-member LLC can sometimes get by on the owner's Social Security number, but a limited liability partnership can't. Two things make the EIN mandatory for an LLP:

• It files a partnership return. A limited liability partnership files IRS Form 1065, the partnership information return, and that return requires an EIN.
• It has more than one owner. The IRS requires an EIN for any business with multiple owners, which every LLP has by definition.

On top of those, you'll need the EIN to open a partnership bank account, hire employees and run payroll, and keep the partners' personal Social Security numbers off business documents. There's really no scenario where a New Hampshire LLP operates without one.

It's free

The IRS issues EINs at no cost. If a website offers to "get your EIN" for a fee, they're charging you to fill out a free federal form. You can do it yourself in about ten minutes, or your formation service can obtain it for you as part of setting up the firm.

The online application moves fast once you start, and it doesn't let you save and resume, so it pays to gather everything first. A little preparation avoids a stalled application.

Information you'll need

• The partnership's legal name exactly as it appears on your Statement of Qualification, plus any trade name you use
• The New Hampshire principal office address for the partnership
• The responsible party's name and taxpayer ID. The IRS requires a "responsible party" — a person who controls or manages the partnership — along with that person's Social Security number or ITIN. For an LLP, this is typically one of the partners.
• The formation date and state — New Hampshire, and the date your LLP registered
• The reason you're applying (starting a new business) and basic details about what the firm does and whether you expect employees

A note on timing with your state filing

It's cleanest to apply for the EIN after your Statement of Qualification is filed and your partnership name is confirmed, so the name on your EIN matches the name on the state record exactly. Applying first with a name that later gets rejected or changed creates a mismatch you'd have to untangle.

The fastest route is the IRS online application, available on business days during the IRS's posted hours. Here's how it goes.

The online application

1. Go to the IRS EIN Assistant at IRS.gov and select that you're applying for a partnership.
2. Enter the responsible party's information — the partner's name and Social Security number or ITIN.
3. Provide the partnership's details — legal name, New Hampshire address, formation date, and a short description of the business.
4. Answer the questions about employees and activities so the IRS can set up your account correctly.
5. Submit and receive your EIN immediately. The number is issued on the spot. Download and save the confirmation notice (the CP 575) as soon as it appears — it's your official proof of the EIN, and you'll want it for the bank.

The whole thing typically takes about ten minutes, and you can use the number the same day.

If you can't apply online

The online tool requires the responsible party to have a U.S. Social Security number or ITIN. A responsible party without one can still get an EIN by submitting Form SS-4 to the IRS by fax or mail. This route takes longer — days to weeks depending on the method — so plan ahead if it applies to your firm.

Once you have the EIN, it stays with the partnership for its lifetime. Knowing where you'll use it — and how to keep it straight — rounds out the picture.

Where the EIN shows up

• On your partnership's Form 1065 and the K-1s issued to partners
• When you open the partnership's bank account (banks require the EIN and the confirmation notice)
• On payroll filings if you hire employees
• On applications for business licenses, permits, and financing
• On vendor and client paperwork, such as a W-9 you provide to clients

Keep it and safeguard it

Store the CP 575 confirmation somewhere safe — reissuing proof of an EIN is a hassle. Treat the number as sensitive; while it's less secret than a Social Security number, it's still used to identify your firm on financial documents, so share it only where it's genuinely needed.

When you'd need a new EIN

Generally, the LLP keeps the same EIN throughout its life, even as partners come and go. You'd typically only need a new one if the entity's structure fundamentally changes — for example, if the partnership incorporates or reorganizes into a different type of entity. If your firm eventually dissolves, you don't reuse the EIN; instead you close the associated IRS account after filing final returns.

How Mainstay Filing helps

If you'd rather not deal with the IRS application yourself, we can obtain the EIN for your New Hampshire LLP as part of setting up the firm, so the number is ready when you go to open your bank account. Coordinating the EIN with your Statement of Qualification means the name on your federal ID matches your state registration from the start.