EIN Guide for a Maryland LLP

An Employer Identification Number is the nine-digit federal tax ID the IRS assigns. Think of it as a Social Security number for your business. For a limited liability partnership, an EIN isn't optional — it's a practical necessity, and here's why.

A partnership files its own return

Unlike a single-member LLC, which can sometimes run on the owner's Social Security number, a partnership is by definition two or more people carrying on a business together. The IRS treats it as its own filer: the LLP files a partnership return (Form 1065) and issues Schedule K-1s to the partners. That return requires an EIN. There's no version of an LLP that operates on one partner's personal Social Security number, so the EIN is required from the start.

What you'll use the EIN for

• Filing the partnership's federal return and issuing K-1s to the partners.
• Opening a business bank account — banks require an EIN for a partnership account, and separate banking is essential to keeping the firm's finances distinct.
• Hiring employees and handling payroll withholding.
• Registering with Maryland tax authorities where the firm's activities require it.
• Establishing the firm's identity with vendors, clients, and licensing bodies.

Timing matters. You want the EIN available when you need it, but there's a logical order to the formation steps.

After registering, before banking

A sensible sequence is to file your Statement of Qualification with SDAT first, so the partnership legally exists as a registered LLP, then obtain the EIN, then open the business bank account. Banks generally want to see both your filed formation document and your EIN when you open the account, so having the EIN in hand keeps that step from stalling.

That said, the IRS will issue an EIN before your state registration is complete if you apply as a partnership that's being formed. Many firms apply for the EIN right around registration so it's ready the moment they need to open accounts. The key point is not to leave it to the last minute — a missing EIN can hold up your bank account and your ability to start operating.

One EIN per entity

Your LLP gets one EIN and keeps it. You don't get a new one each year, and you generally don't need a new one just because partners come and go, as long as the partnership itself continues. Certain structural changes can require a new EIN — a question worth confirming with your CPA if the firm undergoes a major reorganization.

The single most important thing to know: the EIN is free. The IRS issues it at no cost. Any service that charges you specifically to "get an EIN" is charging for the convenience of filling in the form, not for the number, which the government provides for free.

Applying online

The fastest route is the IRS EIN Assistant at IRS.gov. The online application:

• Takes roughly ten minutes to complete.
• Issues the EIN immediately upon completion, so you can print the confirmation and use the number the same day.
• Is available during the IRS's posted online hours.

To apply online, you need a "responsible party" — typically one of the partners — who has a U.S. Social Security number or ITIN. The responsible party is the individual who controls or manages the LLP.

Applying by fax or mail

If no responsible party has an SSN or ITIN, you apply using Form SS-4 by fax or mail instead of online. Fax responses generally come back within a few business days; mail takes longer. International applicants without a U.S. taxpayer ID commonly use this route.

The application goes smoothly when you gather a few details first. Having these on hand prevents the online session from timing out or forcing a restart.

Information the application asks for

• The LLP's legal name exactly as registered with SDAT, plus any trade name if applicable.
• The entity type — you'll indicate that it's a partnership.
• The responsible party's name and SSN or ITIN.
• The LLP's mailing address and the Maryland principal office address.
• The reason for applying — for example, starting a new business.
• The number of partners and expected employees, if any.
• The date the business started or will start.

After you receive it

Store the EIN confirmation with your partnership's key documents alongside your filed Statement of Qualification. You'll reference it repeatedly — at the bank, on tax filings, and when registering with Maryland tax authorities. Treat it as sensitive; it identifies your firm to the IRS and to financial institutions.

The EIN is one link in the chain that turns a group of partners into a fully operational Maryland firm. On its own it does nothing; combined with your SDAT registration, your partnership agreement, and a dedicated bank account, it lets the LLP function as a real, separate business.

When you register your LLP with us, we handle the SDAT-facing filing and serve as your Maryland resident agent. Obtaining the EIN is a separate step you can complete directly with the IRS at no cost in a few minutes, and we'll point you to it as part of getting your firm operational. Because the number is free and quick to get, there's rarely a reason to pay a premium for it — the value we add is in the state registration and ongoing resident agent service, not in charging you for something the IRS gives away.