The Colorado Sun
06/11/2026 12:18

Colorado voters approve Amendment 87, imposing higher income taxes on top earners

In a major win for progressive Democrats, Colorado voters this week approved a $2 billion tax hike on the highest earning households and corporations in order to expand social services and prevent further cuts to the state budget.

The decision brings a graduated income tax system back to Colorado for the first time since 1986, repealing a provision in the state constitution that required everyone to pay the same income tax rate, no matter how much money they make.

Amendment 87 was leading with 51.4% of the vote in favor and 48.6% opposed as of 7:45 a.m. Friday, when opponents conceded. The Associated Press had not yet called the race.

The measure, backed by a coalition of progressive advocacy groups, imposes six new tax brackets that will raise taxes on households and businesses making more than about $500,000, while cutting them on the first $100,000 people earn a year.

It will generate an estimated $2 billion annually that the legislature can spend on healthcare, public schools and childcare — an amount that could immediately reverse the state’s dismal budget outlook, with money left over to expand those services.

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Answers to your questions about Amendment 87, Colorado’s graduated income tax ballot measure

As a result, the legislature’s Joint Budget Committee will return to work next week on a spending plan that won’t require another $1.6 billion in budget cuts, as state fiscal analysts had feared. On Tuesday, voters also approved a separate measure, Proposition NN, which will allow the state to spend more money on education.

On their own, either measure would have been the largest infusion of new tax dollars for public services in Colorado since 2005’s Referendum C. Taken together, they represent a new era in Colorado politics, as Democrats look to expand spending on public services beyond the strict limits imposed by the Taxpayer’s Bill of Rights, or TABOR.

To overcome the state’s decades-long streak of opposing higher taxes, the progressive groups behind the measure tapped into simmering anger at the rich at a time when billionaires are accumulating wealth faster than ever and the middle class is struggling to afford the essentials.

Supporters declared victory on Thursday afternoon at a rally at La Raza Park in Denver.

“This campaign is historic,” said state Rep. Lorena Garcia, an Adams County Democrat. “We are finally demonstrating that Colorado voters aren’t happy with Tabor, but that Colorado voters want to invest in our future, in our kids, in our health, in our communities.”

“What is today? It’s tax the rich day,” she said to cheers from the crowd. 

For a household with $75,000 in taxable income, taxes will go down by $275 a year. For a family making $550,000, taxes will go up $1,175 a year, while someone making $10 million annually will owe an additional $376,000 in taxes. The same changes will also apply to business profits.

Colorado Graduated Income Tax Calculator

Colorado · Proposed for tax years 2027+

See what you’d owe under Amendment 87’s proposed six-bracket structure versus Colorado’s current 4.4% flat rate. Enter your federal taxable income.

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The measure’s passage was a major defeat for conservatives and business groups, who said it would drive up consumer prices and increase financial pressure on businesses at an already difficult economic time.

 “We are incredibly disappointed that Amendment 87 has passed,” Colorado Chamber of Commerce president and CEO Loren Furman said in a statement Friday. “Small business owners work their entire lives to achieve the American dream, but this measure will penalize them for achieving that dream.

“Many of these employers are already struggling with rising costs to make payroll and support their employees,” she said. “These tax increases will force businesses to make difficult decisions about wages, hiring and future investments.”

Conservative groups and businesses spent heavily to defeat the measure, blanketing the airwaves with inaccurate ads that claimed the measure would have raised taxes on Social Security and veterans’ benefits. It will not.

Some top Democrats also came out against the measure, including Gov. Jared Polis, who said Amendment 87 would harm the economy, and his successor, Attorney General Phil Weiser, who said the measure didn’t give voters a clear enough description of how the state would spend the money.

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Phil Weiser announces opposition to Amendment 87, Colorado’s graduated income tax ballot question

But overwhelmingly, Democratic officials — and their voters — backed the measure and the economic philosophy it represented, favoring more public services and higher taxes on the rich over the conservative, low-tax ideology that has dominated Colorado for decades.

For Karen Vidana, a 22-year-old who works in retail, Amendment 87 was an easy sell.

“I just heard something about taxes helping people and I’m like, yes, yes, yes,” Vidana said Tuesday after casting her ballot in the Denver suburbs.

Jeff Wallace, a 67-year-old physician, said his “only reservation” in voting for it was whether state officials would spend the money where they promised.

“But I still (think) that a progressive income tax is fair for the average person,” he said after voting in Pagosa Springs. “The very wealthy can afford more.”

Others said they were deterred by the higher taxes.

Mackinzie Washington, a 32-year old landscape construction foreman, was on the fence, but ultimately voted no. “I’m for more taxes on corporations, but not the people, and they kind of bundled it together,” Washington, who is politically unaffiliated, said after casting his ballot in Westminster. “So you’re kind of stuck between a rock and a hard place there.”

In a separate vote, Coloradans were on track to defeat Proposition 136, a conservative ballot measure that sought to thwart Amendment 87’s higher tax brackets by setting a maximum state income tax rate of 4.4%.

Opponents of Amendment 87 far outspent supporters

The Protect Colorado’s Future Coalition was the main issue committee working to pass Amendment 87. It raised about $2.7 million in support of the measure. 

The committee’s major donors included Stand for Children, a liberal political nonprofit that doesn’t reveal its donors; Merle Chambers, a Denver philanthropist and Democratic megadonor; and the New Era Colorado Action Fund, another liberal political nonprofit that doesn’t reveal its donors.

Colorado WINS, the union for state employees, was also a major donor to the group alongside the Bell Policy Center and Colorado Fiscal Institute, two liberal nonprofit think tanks.

Far more money was spent in opposition to 87 by a list of issue committees. 

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Colorado voters pass Proposition NN, sending TABOR refunds to K-12 schools

Don’t Price Us Out the most well funded committee opposing 87. It raised more than $4 million to fight the initiative, including $1.7 million from the American Prosperity Coalition, a conservative group that’s registered to a shipping store near Dallas; $775,000 from the Leadership for America Fund, another conservative group, that is registered to a shipping store in Oklahoma City; and $600,000 from the Denver Metro Chamber of Commerce. 

Keep Colorado Affordable, another issue committee, raised about $3 million to oppose Amendment 87 and support Proposition 136 — a proposal that aimed to thwart the amendment’s tax hikes by limiting income taxes to their current level. The committee received $1.85 million from the GOPAC Election Fund, a federal super PAC that gives to Republican candidates and causes; $550,000 from the Denver Metro Chamber of Commerce; and $500,00 from the Colorado Chamber of Commerce’s campaign arm.

The Denver Metro Chamber of Commerce also spent $925,000 in opposition to Amendment 87 through the issue committee Let’s Go Colorado, while Americans for Prosperity, a national conservative political nonprofit that doesn’t disclose its donors, spent about $450,000 to fight 87 through an issue committee of its own.

In all, The Colorado Sun found about $2 million in donations from the Denver Chamber to groups opposing Amendment 87.

Finally, Brighter Colorado, an issue committee that backed several conservative ballot measures this year and opposed Amendment 87, raised about $6.1 million, most of it from conservative political nonprofits that don’t disclose their donors.

This is a developing story that will be updated.

Colorado Sun staff writers Jesse Paul, Parker Yamasaki and Shannon Mullane contributed to this report.

Type of Story: News

Based on facts, either observed and verified directly by the reporter, or reported and verified from knowledgeable sources.

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