2025 Instruction 1040 - Internal Revenue Service
...What is the Taxpayer Advocate Service? The Taxpayer Advocate Service (TAS) is an independent organization within the Internal Revenue Service (IRS) that helps taxpayers and protects taxpayer rights. TAS strives to ensure that every taxpayer is treated fairly and that you know and understand your rights under the Taxpayer Bill of Rights....
https://www.irs.gov/pub/irs-prior/i1040gi--2025.pdf