IRS Information / Preparer Information
Due Diligence Requirements
Information From the IRS
- IRS Guidance on E-Filing Returns Rejected for a Duplicate Dependent
- Valid Range for ITINs
- FinCen Beneficial Ownership Information (BOI) Report
- Internal Revenue Service Number (IRSN)
- Section 179 Deduction: How It Works and Annual Limitations
- What is a CAF number?
IRS Notices
IRS Tax Topics
Prior Year IRS Articles
IRS Tax Tips
IRS Tax Relief for Federal Disaster Areas
- Hurricanes Helene and Milton Disaster Relief
- IRS Tax Relief for Flooding Victims in Vermont
- IRS Tax Relief for Disaster Victims in Tennessee
- IRS Tax Relief for Disaster Victims in Indiana
- IRS 2023 Tax Relief for Disaster Victims in Arkansas
- IRS Tax Relief for Disaster Victims in Mississippi
Office Security
Information for Tax Return Preparers
- IRS Reject Code R0000-225 During Filing Season 2025
- Can I mask the PTIN on a tax return?
- 2022 - 2024 Year Over Year Tax Provisions Comparison
- 2021 - 2023 Year Over Year Tax Provisions Comparison
- IRS Form 1139 - Corporation Application for Tentative Refund
- Verifying Your EFIN e-File Application Information