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Colorado Amendment 87: Graduated Income Tax (2026)
The official text, Blue Book analysis, fiscal impact statement and TABOR fiscal information for Colorado's 2026 graduated income tax measure, plus the competing Proposition 136 and the full 2026 ballot information booklet.
Selected findings
Amendment 87 would cut the income tax rate to 3.70% on income up to $25,000 and raise it on income over $500,000, with 97% of taxpayers projected to see a tax cut.
The measure is projected to raise state revenue by $963.2 million in FY 2026-27, rising to $1,981.1 million in FY 2027-28, with a maximum increase of $2.7 billion.
Taxpayers earning $1 million or more in federal adjusted gross income (about 46,328 people) would see an average tax increase of $26,085, totaling over $1.2 billion.
Amendment 87 Blue Bo · p.6
New revenue must be spent only on K-12 education, health care, and early childhood care and education, and must supplement rather than replace existing funding.
Amendment 87 Blue Bo · p.4, lines 89-93 +1
The competing Proposition 136 would instead cap individual and corporate income tax rates at 4.4% of federal taxable income starting January 1, 2027.
Proposition 136 Text · Proposition 136 Text of Measure.pdf, p.1
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Files8 files · 4.0 MB
PDFAmendment 87 Blue Book Analysis.pdf406 KBDownloadPDFAmendment 87 Final Draft Ballot Analysis Packet.pdf600 KBDownloadPDFAmendment 87 Text of Measure.pdf241 KBDownloadPDFProposition 136 Text of Measure.pdf149 KBDownloadPDFInitiative 195 TABOR Fiscal Information for Blue Book.pdf221 KBDownloadPDF2026 Colorado Ballot Information Booklet.pdf2.2 MBDownloadPDFInitiative 195 Fiscal Impact Statement.pdf103 KBDownloadPDFProposition 136 Blue Book Analysis.pdf166 KBDownload
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