Proposition 136: Income Tax Rate Cap
Colorado
My vote power
Above average
Election date
November 3, 2026
How do we calculate my vote power?
What determines the vote power rating for ballot measures: Representation: how much weight one vote carries here compared with a statewide vote — the smaller the district, the more each vote counts. You have more power in ballot measures because you vote directly on the policy.
Representation: Average · 50 out of 100
This district covers a large share of its state, so each vote carries about average weight — like a vote in a statewide race. About 5,862,189 people live here.
Show the representation math
score = 50 + 50 × ln(state population ÷ this district's) ÷ ln(50,000) = 50 + 50 × ln(5,862,189 ÷ 5,862,189) ÷ ln(50,000) = 50, measured against a statewide vote in CO (grades: 66+ high, 55+ above average, 33+ average, otherwise low; a statewide race is the 50 baseline)
Average representation + a direct vote on the policy → My vote power: Above average.
Ballot Measure
Colorado's income tax rate for people and companies could never go above the current 4.4% of federal taxable income, starting in 2027. Your tax bill would not change now, but any future rate above 4.4% would be blocked, including the graduated tax in Amendment 87.
A YES vote means
The income tax rate is capped at 4.4% by state law, so no future tax rate above that could take effect without changing this law.
A NO vote means
The rate stays 4.4% for now, but the legislature or voters could raise it in the future.
Campaign Finance Information
Campaign Finance Information
Largest donors supporting
- Common Sense America · VANational nonprofit; donors not public$250,000
- Advance ColoradoColorado conservative advocacy nonprofit$20,000
- Richard McCormickDenver retiree$5,000
Some of this money went to groups that also work on other measures.
Largest donors opposing
- The Bell Policy CenterDenver policy research nonprofit$132,824
- New Era Colorado Action FundYoung voter organizing group$131,127
- Colorado Statewide Parent CoalitionParent advocacy nonprofit$127,680
- Great Education Colorado ActionSchool funding advocacy group$111,130
- Colorado Fiscal InstituteTax policy research nonprofit$86,466
Some of this money went to groups that also work on other measures.
Filings as of September 17, 2026 · Sources: tracer.sos.colorado.gov23
Sources: coloradosos.gov · sos.state.co.us