Form hub • IRS • Updated 2026
IRS SS-4: EIN Application (Phone & Fax Routes for Foreign Founders)
Free EIN application. Online needs an SSN/ITIN; foreign founders call the IRS international line (EIN issued on the call) or fax the SS-4 (about 4 business days).
Quick answers
- What is IRS SS-4 and when is it due?
- Free EIN application. Online needs an SSN/ITIN; foreign founders call the IRS international line (EIN issued on the call) or fax the SS-4 (about 4 business days). Due: Before banking/hiring.
Key facts
- Responsible party: A real individual (founder); foreign address allowed.
- Cost: $0. Paid “expedited EIN” sellers control no queue.
- Timing: Start the day you form; banks and Stripe wait on it.
Deadline
Before banking/hiring (IRS). Extensions extend filing where offered — never payment.
Full walkthrough
IRS SS-4 is covered step by step, with worked examples, in EIN without an SSN. For every deadline in the year, see the 2026 compliance calendar.
Other forms
FTB 3522 — due April 15FTB 3536 — due June 15FTB 568 — due Mar 15 (MMLLC) / Apr 15 (SMLLC)IRS 2553 — due 2 months 15 days into tax yearIRS 1120 — due April 15 (extendable to Oct 15)IRS 1065 — due March 15 (extendable to Sep 15)IRS 5472 — due April 15 with pro-forma 1120NY CT-3 — due April 15IRS W-9 — due Before first client paymentIRS 941 — due Quarterly (Apr/Jul/Oct/Jan)IRS 1120-S — due March 15 (extendable to Sep 15)
Sources
- IRS form instructions; related guide on this site