Getting Started April 8, 2026 8 min read

IRS E-File Setup Guide for New Tax Preparers

Electronic filing is mandatory for any preparer who files 11 or more returns. Even if you're below that threshold, e-filing is faster, more accurate, and preferred by clients. Here's how to get set up.

Prerequisites

Before you can e-file, you need:

Step 1: Create an IRS e-Services Account

Go to the IRS e-Services portal and create an account. You'll need to verify your identity through ID.me, which may require uploading a government-issued ID and taking a selfie. Allow 24-48 hours for account activation.

Step 2: Apply for Your EFIN

Once your e-Services account is active, apply for an Electronic Filing Identification Number (EFIN). This is a six-digit number assigned to your firm. Key steps:

  1. Complete the online EFIN application
  2. Submit to a fingerprint-based background check via an approved vendor
  3. Pass the IRS suitability check
  4. Receive your EFIN (typically 45-60 days from application)
Start your EFIN application well before tax season. The 45-60 day processing time means applying in January may not give you enough time. Apply by November of the prior year.

Step 3: Choose E-File Software

Your EFIN alone doesn't let you e-file — you need IRS-approved software. Options include:

Most software providers need your EFIN during setup to connect to the IRS e-file system.

Step 4: Test Your Setup

Before filing live returns, submit a test return through the IRS Assurance Testing System (ATS). This verifies your software is properly configured and communicating with IRS systems. Most tax software handles this automatically during initial setup.

Step 5: Understand Your Obligations

As an ERO (Electronic Return Originator), you have specific obligations:

Common E-File Rejections and How to Fix Them

Duplicate SSN

Someone else already filed using the client's SSN. Usually means a dependent was claimed on another return. The client may need to paper-file and the IRS will sort it out.

AGI Mismatch

The prior-year AGI used for identity verification doesn't match IRS records. Solution: use the IP PIN if the client has one, or enter $0 for AGI if they didn't file the prior year.

Name/SSN Mismatch

The name on the return doesn't match SSA records. Common after marriage or legal name change. Client needs to update their name with the Social Security Administration.

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