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
- 2026-10-24
What you can do there
Find tax forms and instructions
Read filing guidance
Review notices and taxpayer services
Understand employer and business reporting
Questions this answers
Related questions
What is IRS.gov?
Where do I find Form W-9?
Where do I find Form 1040?
Sources
- Internal Revenue Service · checked 2026-10-24