Getting an EIN for Your Apartment LLC: The Free IRS Steps and Deadlines

An apartment syndication LLC needs its own employer identification number (EIN) before it can open a bank account in its name, file a partnership return or send tax forms to investors. The IRS issues an EIN free of charge. Many websites charge for the same number, and the IRS warns about them. This post sets out the official steps, what the online form needs and the first tax deadline that follows.

On DoorRaise, the platform handles the EIN application for the deal's LLC behind the scenes, so the sponsor only confirms the details. The steps below are the ones the IRS publishes, so you can check the process and know what is being filed in your name.

The IRS steps

1. Go to IRS.gov/EIN. The IRS page is the official route. Be wary of any site that charges a fee or asks for money to get a number.
2. Check that the LLC qualifies for the online form. The entity must have a principal place of business in the United States or a U.S. territory. Without one, use a paper or phone route.
3. Name the responsible party. The IRS requires a responsible party with a valid taxpayer identification number, such as a Social Security number or an ITIN. The online form can't be used when the applicant applies with an EIN (unless it is a government entity); use the phone, fax or mail route instead. The responsible party is the person in control of the entity or its authorized representative.
4. Choose the entity type. The form asks for the entity type first and then shows only the questions that apply to it.
5. Finish in one sitting. The application cannot be saved. It expires after 15 minutes of inactivity, and you must start over. Save the EIN assignment notice at the end, because you can view, print and save it in that session.

The IRS says a number issued online can be used at once to file a return or make a payment, as long as the entity has a U.S. principal place of business. Paper Form SS-4, sent by mail, takes about four weeks.

Use one method for each entity, so you do not get two numbers for one LLC.

What the IRS form asks for

The IRS instructions for Form SS-4 (revised December 2025) list the entity details the form needs. Have these ready before you start:

• The LLC's legal name, as filed with the state
• The address of the principal place of business
• The responsible party's name and taxpayer identification number
• The entity type, and for a partnership, the number of members
• The reason for applying, and the date the business started

Keep the state filing and the operating agreement next to the form, so the name and dates match.

The first tax deadline

A multi-member LLC that is taxed as a partnership files Form 1065, the U.S. Return of Partnership Income. The IRS says a domestic partnership files it by the 15th day of the third month after its tax year ends. For a calendar-year partnership, that is March 15. If March 15 falls on a weekend or holiday, the next business day counts. Form 7004 gives an automatic extension, and it must be filed by the regular due date.

The partners' Schedule K-1s are due on the same date. IRS Publication 509 says so. For the instructions for the K-1, see the IRS instructions for Schedule K-1 (Form 1065). Our post on K-1s for a real estate syndication explains what an investor receives, and K-1 timing for late syndication investors covers what happens when the deadline slips.

How DoorRaise fits

On DoorRaise, the platform applies for the deal's EIN and forms the LLC, so the sponsor is not asked to fill in the IRS form. The sponsor sees the status. The return and the K-1s are prepared by the deal's accountant, not by DoorRaise. Read the tech stack for your apartment deal for who prepares what.

Sources

• IRS: Get an employer identification number
• IRS: Instructions for Form SS-4 (12/2025)
• IRS: Taxpayer Advocate, getting an EIN
• IRS: 2025 instructions for Form 1065
• IRS: Publication 509, tax calendars
• IRS: instructions for Schedule K-1 (Form 1065)

This article is general information, not legal, tax or investment advice. Ask a CPA about your entity's tax treatment and filing dates. The IRS instructions cited are as published when this post was written; check the current year's forms before you file. DoorRaise is not a tax preparer.