IRS filing guides

Step-by-step, IRS-sourced answers to the questions that come up when you file by fax — the exact forms, fax numbers, and deadlines.

How to get an EIN without an SSN or ITIN

No SSN or ITIN? The IRS online EIN tool won't work. File Form SS-4 by fax and the IRS faxes the EIN back in about 4 business days. Step-by-step, with the correct fax numbers and what to put on line 7b.

How to respond to an IRS collection notice: appeals and payment forms

Got an IRS lien or levy notice? Form 12153 (CDP) has a 30-day deadline, Form 9423 (CAP) runs on business days, and Form 433-D sets up a payment plan. Where each one goes — and why the fax number is the one on your notice.

Form 2553 vs Form 8832: which election does your LLC file?

Form 2553 elects S corporation status; Form 8832 chooses how your entity is taxed. For an S corp you file 2553 alone — no separate 8832. Deadlines, where each goes, and the mistake to avoid.

Lost your EIN confirmation letter — how to get proof of your EIN

The IRS will not reissue your CP 575 — it cannot be recreated. Three ways to get written proof of your EIN instead: the digital CP 575 in Business Tax Account, Letter 147C by phone, or an entity transcript.

How to get an EIN — every route, and which one applies to you

An EIN is free from the IRS. Online is instant but only works if the responsible party has an SSN or ITIN and the business is in the US. Here is every route, how long each takes, and which one you can use.