Tier 1 official source
IRS.gov
The official federal tax site for forms, instructions, filing guidance, notices, and taxpayer services.
Source metadata
- Domain
- irs.gov
- Owner
- Internal Revenue Service
- Level
- federal
- Category
- Identity and tax
- Last checked
- 2026-09-07
What you can do there
Find tax forms and instructions
Read filing guidance
Review notices and taxpayer services
Understand employer and business reporting
Related questions
What is IRS.gov?
Where do I find Form W-9?
Where do I find Form 1040?