Your IDES number is a unique identifier that connects you to your unemployment claim in Illinois's computer system

The IDES number (Illinois Department of Employment Security number) is a nine-digit code assigned to your unemployment claim when you file. It is not your Social Security number, driver's license number, or any other ID you already have — it is a separate reference number that IDES creates specifically for tracking your claim and weekly certifications.

When you certify weekly, you use this number to log into the IDES system, confirm your claim details, and report whether you worked that week. The number stays the same for the entire duration of your claim, even if you reopen it later or file again in a different year.

You will see your IDES number on your initial claim confirmation letter, on your debit card (if you receive benefits by card), and in any correspondence from IDES about your claim. If you cannot find it, you can look it up through your IDES account online or by calling the IDES customer service line.

Key Takeaways

  • Your IDES number is a nine-digit code created by Illinois when you file your claim, separate from your Social Security number or any other ID.
  • You need your IDES number to log into the IDES website and complete your weekly certification each week you claim benefits.
  • The number appears on your claim confirmation letter, debit card, and any official IDES mail about your claim.
  • If you lose track of your IDES number, you can retrieve it by logging into your IDES account online or calling customer service.

Where to find your IDES number

Your IDES number was sent to you in writing when your claim was approved. The most common places to locate it are your initial claim confirmation letter (the official notice IDES mailed after you filed) and your debit card (if you receive benefits by card rather than direct deposit). Both of these documents print the number clearly.

If you have access to your IDES online account, you can also log in and view your IDES number on your claim summary page. The account login uses your Social Security number and a password you created when you first registered.

If you have lost all copies of these documents and cannot access your online account, call the IDES customer service line. You will need to provide your name, Social Security number, and date of birth so they can look up your claim and give you the number over the phone.

How to use your IDES number for weekly certification

Each week you are claiming benefits, you must certify by logging into the IDES website at www2.illinois.gov/ides or through the IDES mobile app. When you log in, you will enter your Social Security number and password, not your IDES number — but your IDES number is what identifies which claim you are certifying for once you are logged in.

After you log in, the system will display your claim information and show you the week you need to certify. You will answer questions about whether you worked, earned money, or had any other changes that week. Your IDES number ties all of this information to your specific claim record in the state's system.

If you have multiple claims (for example, if you filed in different years), your IDES number tells the system which one you are certifying. This is why keeping track of it matters — it prevents confusion if you ever need to reference your claim or if IDES needs to contact you about a specific claim period.

What happens if you forget your IDES number

Forgetting your IDES number does not prevent you from certifying. You do not need to enter it to log into the IDES website — you log in with your Social Security number and password. Once you are logged in, the system knows which claim belongs to you and displays it automatically.

However, you may need your IDES number if you call IDES customer service to ask about your claim, if you need to provide it to an employer or third party, or if you are troubleshooting an issue with your account. In those situations, having it on hand saves time.

If you need it and cannot find it, call IDES customer service and provide your name, Social Security number, and date of birth. They can retrieve it in seconds and read it to you over the phone. You can also check any old mail from IDES or log into your online account to find it yourself.

IDES number versus claim number: what is the difference

Your IDES number and your claim number are the same thing — IDES uses these terms interchangeably. Both refer to the nine-digit identifier assigned to your specific unemployment claim. You may see it called either way in official documents or when you speak to customer service, but they point to the same number.

This is different from your Social Security number, which is what you use to log into the IDES website. It is also different from any case number or reference number IDES might assign if you file an appeal or dispute. Those are separate tracking numbers for specific issues, not your main claim identifier.

Keeping your IDES number safe

Your IDES number is not sensitive information in the way your Social Security number is — it is printed on mail IDES sends to your home and on your debit card, which are not find documents. However, you should still keep it in a safe place so you can find it quickly if you need it.

Store your claim confirmation letter in a folder with other important documents, or take a photo of it and save it to your phone. If you receive benefits by debit card, your IDES number is printed on the card itself, so you always have it with you. You do not need to memorize it, but knowing where to find it saves time if IDES or an employer asks for it.

When you might need to provide your IDES number

You may be asked for your IDES number in several situations. If you call IDES customer service to discuss your claim, providing the number helps the representative pull up your account faster. If you are appealing a decision or filing a dispute, IDES will ask for it to locate your claim in their system.

Some employers also ask for your IDES number when you report work or earnings during your claim period. This helps them verify that you are claiming benefits and allows them to report your work hours or wages directly to IDES if needed. If an employer asks for it, you can provide it — it is not confidential information.

You may also need it if you are working with a workforce development agency, a job training program, or a third-party organization that coordinates with IDES. These organizations sometimes request it to verify your claim status or to share information with IDES on your behalf.

Frequently Asked Questions

Is my IDES number the same as my Social Security number?

No. Your IDES number is a separate nine-digit code created by Illinois when you file your claim. Your Social Security number is what you use to log into the IDES website. You need both, but they are different numbers.

Can I change my IDES number?

No. Your IDES number is permanent for that claim. If you file a new claim in a later year, you will receive a new IDES number for the new claim, but the old number stays tied to the original claim.

What if I lost my debit card and cannot see my IDES number?

Check your claim confirmation letter from when you filed. If you do not have that either, log into your IDES account online using your Social Security number and password — your IDES number will be displayed there. You can also call IDES customer service and they will provide it over the phone.

Do I need my IDES number every time I certify?

No. You log into the IDES website using your Social Security number and password. Once you are logged in, the system automatically shows your claim and the week you need to certify. You only need your IDES number if you are calling IDES or if someone asks you to provide it.

What if the IDES number on my debit card does not match the one on my confirmation letter?

Contact IDES customer service right away. This is unusual and may indicate an error in your account. Provide both numbers and your Social Security number so they can investigate and correct the issue.