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安裝中文字典英文字典辭典工具!
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- Sigma Support – Welcome
Sigma Tax Pro guarantees prompt and professional responses to our clients’ inquiries If you have basic questions about any of our software products or just have a general inquiry you can reach us via support@sigmataxpro com or give us a call at (866) 386-4769
- Tax Prep Support – Sigma Support
Tax Prep Support NEW TO THE BUSINESS? Sigma Tax Pro is committed to their clients no matter how long they have been in the industry If you have questions on tax guidelines, how to complete a tax return, avoiding errors and omissions or how to ensure your clients’ satisfaction then we can provide the answers you need
- Knowledge Base – Sigma Support
TAX PREPARATION SUPPORT Our staff has many years of experience using our software and preparing tax returns They are able to answer any questions you may have when the pressure is on during tax season…
- Video Library – Sigma Support
Copyright 2025 All Rights Reserved By Sigma Tax Pro LLC
- Training – Sigma Support
Knowledge Base Video Library Wiki Support Tax Tools Software Training Tax Research
- Sigma 1040-SR Training – Sigma Support
Desktop New User Orientation Part 2 Working with Returns and Program Features - YouTube
- IRS Forms and Publications – Sigma Support
Application for Recognition of Exemption Under Section 501 (c) (3) of the Internal Revenue Code
- IRS Requirements For Tax Pros – Sigma Support
The Internal Revenue Service requires all tax professionals who want to electronically file tax returns to register as an Electronic Return Originator (ERO) Upon acceptance as an ERO, the IRS assigns the practitioner an Electronic Filing Identification Number (EFIN) To register as an ERO a tax professional must obtain, complete, and submit Form 8633, “Application to Participate in the IRS
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