Getting an EIN for a Washington Corporation — A Practical Guide

An Employer Identification Number is a nine-digit federal tax identifier issued by the IRS. It's the business equivalent of a Social Security number — the number the federal government, banks, and payroll systems use to identify your corporation.

Why it's mandatory for a corporation

Unlike a single-member LLC, which can sometimes operate on the owner's Social Security number, a corporation always needs its own EIN. A corporation is a separate taxpayer that files its own federal return, so it can't borrow an individual's identity for tax purposes. From the day it exists, your corporation is a distinct entity in the IRS's eyes and needs its own number.

What you'll use it for

• Filing federal returns. A corporation files its own income tax return, and the EIN identifies it.
• Opening a corporate bank account. Banks require the EIN to open an account in the corporation's name.
• Hiring and payroll. You need the EIN to report wages, withhold taxes, and run payroll.
• Registering with Washington's Department of Revenue. You'll provide the EIN when you set up your B&O tax and business license accounts.
• Vendor and contract paperwork. Clients often need your EIN to issue tax forms to the corporation.

Timing matters. Apply for the EIN after your Articles of Incorporation are approved, not before. The IRS application asks for the legal name of an existing entity, and applying before the corporation officially exists can create a mismatch between the IRS record and the state record that's a nuisance to untangle.

The right sequence

1. File the Articles of Incorporation through CCFS and wait for approval and your UBI number.
2. Once the corporation is officially formed, apply for the EIN.
3. Use the EIN to open the corporate bank account, register with the Department of Revenue, and set up payroll if you have employees.

Getting the order right — form first, then EIN, then bank and tax accounts — keeps every record consistent and saves you from correcting mismatches later. The EIN application itself is quick, so waiting until formation is complete costs you almost no time.

The best part: getting an EIN from the IRS is completely free, and for most applicants it takes about ten minutes online.

The online application

Apply through the IRS EIN Assistant at IRS.gov. It's the fastest route: complete the interview, and the EIN is issued immediately at the end. You can download the confirmation letter and start using the number the same day. Key points:

• The online tool is available during posted IRS hours, and the session must be completed in one sitting — it times out if you leave it idle.
• The responsible party (typically an officer of the corporation) needs a valid US Social Security number or ITIN to apply online.
• You'll enter the corporation's legal name exactly as it appears on the Articles of Incorporation, the Washington address, and basic details about the entity.

If you can't apply online

If the responsible party doesn't have an SSN or ITIN — common for international founders — you can't use the online tool. Instead, apply by fax or mail using Form SS-4. Fax is faster than mail. There's no online-versus-paper difference in the number itself; it just takes longer to receive.

A note on "EIN services"

Getting the EIN is free. If a service charges a fee "for your EIN," you're paying for the convenience of them filing the SS-4 on your behalf, not for the number, which the IRS never charges for. It's a legitimate convenience if you'd rather not deal with the application, but know that you can always do it yourself at no cost.

The IRS application hinges on a concept called the responsible party — the individual who ultimately owns or controls the corporation and directs its funds and assets. For most small Washington corporations, that's the founder or a principal officer. Getting this field right matters, because the IRS ties the EIN to that person's tax identity.

What to know about the responsible party

• It must be a person, not an entity. Except for a few exceptions, the responsible party is a human being with a Social Security number or ITIN, not another company.
• Keep it current. If the responsible party changes — say, ownership transfers or a different officer takes control — the IRS expects you to update the record using Form 8822-B. Corporations are supposed to file this within 60 days of the change.
• One EIN per corporation. A single corporation needs only one EIN, and it keeps that number for its life. You don't get a new EIN when you move, rename the corporation, or change officers — only certain structural changes trigger a new number.

Pitfalls that cause rejections and delays

• Applying before the corporation is approved. The most common mistake is racing to get the EIN before the Articles of Incorporation are on file, which creates a name mismatch.
• Name inconsistencies. Enter the corporation's legal name exactly as it appears on the Articles — abbreviations or punctuation that don't match can cause problems down the line with banks and the DOR.
• Applying for a second EIN by accident. If you already have one and can't find it, retrieve the existing number rather than applying again; duplicate EINs create confusion.
• Timed-out online sessions. The online tool doesn't save partial progress, so gather your details before you start and complete it in one sitting.

The EIN unlocks the rest of your Washington setup. With it in hand, several steps that were blocked become straightforward.

What the EIN lets you do next

• Register with the Department of Revenue. Use the EIN to set up your B&O tax and business license accounts. Washington ties these to your UBI, and the EIN is part of that registration.
• Open the corporate bank account. Bring your filed Articles of Incorporation, the EIN confirmation, and a corporate resolution or bylaws authorizing the account. Keeping business money strictly separate from personal money is essential to preserving the corporation's liability protection.
• Set up payroll. If you'll have employees — including yourself, if the corporation pays you a salary — the EIN is the foundation for federal withholding and Washington's employment accounts.
• File your federal return. When tax time comes, the corporation files under its EIN.

Keep the confirmation safe

The IRS issues one confirmation (the CP 575 letter) when the EIN is first assigned, and getting a replacement is a hassle. Save the confirmation with your corporate records the moment you receive it. You'll reference the EIN constantly, so store it somewhere you can find it, and treat the confirmation letter as a document worth keeping permanently.