IRS EFIN Mastery

IRS EFIN Mastery is your step-by-step guide to becoming an IRS-authorized e-filer. Learn how to set up your IRS e-Services account, choose approved software, and maintain ongoing compliance with ease. This eBook walks you through every essential phase of securing and protecting your Electronic Filing Identification Number (EFIN). Whether you’re launching your tax business or refining your operations, you’ll gain clear instructions, compliance checklists, and security best practices to help you file electronically with confidence and credibility.