United States IRC sections
Statute section
IRC section 63
Taxable income defined
Country
United States
Section
63
Updated
2026-05-20
Operative text
Section 63 defines taxable income as gross income reduced by allowable deductions. Subsection (c) defines the standard deduction. The Tax Cuts and Jobs Act roughly doubled the standard deduction effective 2018 through 2025.
Amendment history
2017-12-22
Pub. L. 115-97
TCJA roughly doubled the standard deduction.
Cross-references
26 U.S.C. 126 U.S.C. 6126 U.S.C. 161
Related guides
Related citations
Computed from the cross-reference graph. Links open the related entity on this site.
Cited by
- TermTaxable Income
- StatuteIRC §1
Primary sources
- 26 U.S.C. section 63Verified 2026-05-20
Important disclaimer
This library is for general tax education only. Always verify filing obligations, due dates, and tax consequences against the cited primary source or with a qualified tax professional.