Numbers & Documents
USCIS Receipt Number: How to Read It and Use It to Track Your Case
After you mail or e-file an application, USCIS sends back a receipt notice—and on it is a 13-character receipt number that becomes your lifeline for the months ahead. It's how you check your case online, how you reference your filing on the phone, and how USCIS itself locates the specific application you submitted.
Unlike your A-Number, which identifies you as a person, a receipt number identifies one filing. File three forms and you'll have three receipt numbers. Understanding how to read them takes the mystery out of case tracking.
Here's what each part of the number means, where to find it, and how to put it to work.
Key takeaways
- ✓A receipt number identifies one filing; you get a separate one for each application.
- ✓Format is three letters + ten digits (e.g., IOE0123456789).
- ✓The leading letters indicate the processing center or electronic system.
- ✓Find it on Form I-797C, Notice of Action, or in your myUSCIS account.
- ✓Use it in the Case Status Online tool and whenever you contact USCIS.
Anatomy of a receipt number
A USCIS receipt number is three letters followed by ten digits—for example, IOE0123456789. The three letters at the start tell you where or how your case is being processed. "IOE" generally indicates an electronically processed case (USCIS Electronic Immigration System), while letter codes like EAC, WAC, LIN, SRC, MSC, and YSC historically pointed to specific service centers.
The digits that follow encode the fiscal year, the workday the case was entered, and a sequence number for that day. You don't need to decode the digits yourself—the value of the number is that it uniquely points to your filing.
Every receipt number is unique. Even members of the same family who filed together each receive their own.
Where to find your receipt number
The primary place is Form I-797C, Notice of Action—the receipt notice USCIS mails after accepting your filing. The receipt number is printed prominently near the top, often labeled "Receipt Number."
If you filed online through a myUSCIS account, the receipt number also appears in your account dashboard and in the confirmation USCIS sends. Keep a photo or scan of the notice; it is the single most useful piece of paper in your case file.
If you paid by check, the receipt number sometimes appears on the back of your cashed check as well.
Using the number to track your case
Enter the 13-character number into the USCIS "Case Status Online" tool to see your case's current status and the date of the latest action. You can also create or sign in to a myUSCIS account to attach the case and receive updates.
If you ever call USCIS, having the receipt number ready lets the representative pull up your exact filing immediately. Without it, they may not be able to help.
A note of realism: the online status text is brief and sometimes lags behind reality. For how long your case type is taking overall, use the processing-times tool rather than reading too much into a single status line.
Verify the official details
Government fees, processing times, form editions, and rules change regularly. Before you rely on any figure, confirm the current information on the official government page.
Track your case with the USCIS Case Status toolFrequently asked questions
What does the IOE prefix on my receipt number mean?+
IOE generally indicates a case handled through the USCIS electronic processing system rather than a single physical service center. It is common on cases filed or transferred online.
Is my receipt number the same as my A-Number?+
No. The receipt number (three letters + ten digits) identifies one specific filing. The A-Number is your permanent nine-digit personal identifier. You can have many receipt numbers but only one A-Number.
Where do I find my receipt number?+
On Form I-797C, Notice of Action—the receipt USCIS mails after accepting your application—near the top labeled "Receipt Number." It also appears in a myUSCIS online account.
My online case status hasn't changed in months. Is something wrong?+
Not necessarily. Many cases sit in the same status for long stretches while in the queue. Check the processing-times tool for your form type to see whether your wait is within the normal range before worrying.
Can two people have the same receipt number?+
No. Each receipt number is unique to a single filing. Family members who file together each receive their own distinct numbers.
I lost my receipt notice. Can I get my number back?+
If you have a myUSCIS account linked to the case, the number is there. Otherwise you can contact USCIS to request help; having your A-Number and personal details ready will make that easier.
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Asal Immigration Services is a document preparation service operated by Asal Multi-Services LLC. We are not attorneys and are not authorized to practice law. We do not provide legal advice, explanations, opinions, or recommendations about legal rights, remedies, defenses, options, or strategies. We assist with the preparation of immigration forms based on information you provide. For legal advice, consult a licensed immigration attorney.