EFIN Guidebook

EFIN Guidebook

Getting your Electronic Filing Identification Number (EFIN) is one of the most important steps to becoming an IRS-authorized tax professional—but the application process can feel overwhelming.

The EFIN Guidebook walks you through the entire process from start to finish with simple, step-by-step instructions. Learn what you'll need before you apply, how to complete your application, avoid common mistakes that cause delays, and understand what happens after your EFIN is approved.

Whether you're starting your first tax business or expanding your services, this guide will help you complete your EFIN application with confidence and move one step closer to serving clients professionally.