Disclaimer This article provides general information for educational purposes only. It is not legal advice, does not create an attorney-client relationship, and should not be relied upon as a substitute for consultation with a qualified attorney. Laws vary by state, and individualized guidance is recommended.

An Employer Identification Number (EIN) is one of the first things most Delaware LLC owners obtain after forming their business.

Issued by the Internal Revenue Service (IRS), an EIN serves as the business’s federal tax identification number and is commonly required for banking, tax reporting, hiring employees, and many commercial transactions.

This guide explains who needs an EIN, how to apply, processing times, and common issues business owners encounter after receiving one.

What Is an EIN?

An Employer Identification Number (EIN), sometimes called a Federal Tax Identification Number, is a unique nine-digit number assigned by the IRS.

An EIN is commonly used to:

• Open a business bank account.
• File federal tax returns.
• Hire employees.
• Register for certain business taxes.
• Apply for business financing.
• Establish business credit.

Many Delaware LLCs obtain an EIN even when they have no employees.

Do Delaware LLCs Need an EIN?

Many Delaware LLCs require an EIN.

Although certain single-member LLCs without employees may not always be legally required to obtain one for federal tax purposes, an EIN is commonly needed by:

• Banks.
• Payment processors.
• Lenders.
• Vendors.
• Government agencies.

As a practical matter, most Delaware LLCs obtain an EIN shortly after formation.

Before You Apply

Before submitting your EIN application, you should generally have:

• An approved Delaware Certificate of Formation.
• Your LLC’s legal name.
• The responsible party’s identifying information.
• Your business mailing address.
• Basic information regarding the LLC’s ownership and tax classification.

Many businesses also prepare their Operating Agreement before beginning operations.

Who Is the Responsible Party?

The IRS requires every EIN application to identify a responsible party.

Generally, this is the individual who ultimately owns or controls the business.

The responsible party generally cannot be another business entity.

The IRS also limits the number of EINs that may be issued to the same responsible party within a single day.

How to Apply for an EIN

There are three primary application methods.

Online Application

Businesses whose responsible party has a Social Security Number (SSN) or Individual Taxpayer Identification Number (ITIN) may qualify to use the IRS Online EIN application.

If eligible, the EIN is generally issued immediately upon successful completion of the application.

The IRS does not charge a fee for issuing an EIN.

Fax Application

Businesses that cannot use the online system may submit IRS Form SS-4 by fax.

This option is commonly used by international applicants and businesses whose responsible party does not qualify for the online application.

Processing times vary but are generally faster than mailed applications.

Mail Application

Applicants may also submit Form SS-4 by mail.

This is usually the slowest option, with processing often taking several weeks.

International Applicants

Non-U.S. residents can obtain an EIN even without a Social Security Number.

Many international applicants complete Form SS-4 and follow the IRS instructions applicable to foreign applicants.

Because international tax situations vary considerably, professional advice may be appropriate in complex cases.

When Can You Use Your EIN?

Although an EIN may be issued immediately through the online application, some financial institutions, payment processors, and government verification systems may require additional time before recognizing a newly issued EIN.

As a result, some businesses experience short delays when opening bank accounts or completing other registrations shortly after receiving their EIN.

These delays are generally temporary.

After Receiving Your EIN

Once your EIN has been issued, additional steps may include:

• Opening a business bank account.
• Completing your Operating Agreement.
• Registering for any required state taxes.
• Obtaining business licenses, where applicable.
• Setting up payroll, if hiring employees.

Businesses should also review any applicable federal and state reporting requirements.

Delaware LLC Tax and Registration

Although the EIN is issued by the IRS, Delaware LLC owners may also have state-level compliance obligations.

Depending on the business’s activities, this may include:

• Annual Delaware LLC tax.
• Delaware business licenses.
• State tax registrations.
• Employment-related registrations.

Businesses should review Delaware’s requirements based on their specific operations.

Delaware Series LLCs

Businesses using a Delaware Series LLC should note that EIN requirements may differ depending on how each series is treated for federal tax purposes.

Because the tax treatment of individual series can vary, owners should consult a qualified tax professional regarding whether separate EINs are appropriate.

Conclusion

Obtaining an EIN is an important step in establishing a Delaware LLC. While the application process is often straightforward, understanding the available application methods, eligibility requirements, and possible verification delays can help avoid unnecessary complications. By securing your EIN promptly and completing any required federal and state registrations, your Delaware LLC will be better positioned to begin operating efficiently.

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