Can you fax USCIS?

Generally no. USCIS forms are filed online or by mail with original signatures. Only fax USCIS if a USCIS notice or officer gives you a specific fax number to use for that request.

Check first: Don’t fax an application or petition to USCIS unless you were told to; it won’t be treated as filed.

Tips so it isn’t rejected

File online at my.uscis.gov when the form allows it, or mail it to the address in the form’s instructions.
If an attorney or a notice asks you to fax evidence, use exactly the number given and keep the delivery receipt.

Official guidance: USCIS: Forms and filing. Fax numbers change; always use the number printed on your form or letter. Last checked November 2026.

Faxing somewhere else?

How to fax a form to the IRSWhich IRS forms you can fax, where to find the right number, and how to send it online for $2.99.
How to fax the Social Security officeWhat SSA accepts by fax, how to find your local office’s fax number, and how to send it with proof of delivery.
How to fax medical records or a records requestSend medical records, referrals or a records request to a clinic, hospital or specialist without a fax machine.
How to fax your health or car insurance companySend claim forms, appeals and supporting documents to an insurer by fax and keep proof of the date you sent it.
How to fax documents to the unemployment officeSend ID verification, wage records or appeal documents to your state unemployment office by fax.
How to fax documents to the SNAP (food stamps) officeSend verification documents for SNAP, Medicaid or other benefits to your county or state office by fax.