CLEARFILE TAX PRO Software : Level 4 is designed to help tax professionals establish a successful service bureau business and build a team of over 1,000 tax professionals. Learn how to create a strong brand, attract new tax professionals and service bureaus, develop a high-performing team, and master effective marketing and training strategies. Please note that a PTIN (Preparer Tax Identification Number) and EFIN (Electronic Filing Identification Number) are required for this package.