Premiums for people in Colorado who buy health insurance on their own will rise next year on average by an additional 6 percent above previously announced increases as a result of the Trump administration’s decision to end a key subsidy, the state Division of Insurance announced Friday.

The bump means that the average increase for premiums in the individual market next year in Colorado will now be nearly 33 percent over 2017 rates.

Gov. John Hickenlooper called the subsidy decision, “cruel and irresponsible.”

“(H)undreds of thousands of Coloradans will see their premiums increase even more,” Hickenlooper said in a statement. “It threatens coverage for Coloradans with chronic diseases or disabilities, potentially putting health care out of reach for those who need it the most.”

President Donald Trump announced late Thursday that he will discontinue the subsidies. The subsidies are a key component of the Affordable Care Act, the health law also known as Obamacare. They help low-income people who buy their health insurance on their own — instead of getting it through an employer or the government — to pay for deductibles and back-end costs of insurance.

The subsidies, known as cost-sharing reduction payments or CSRs, are separate from the more widely used tax credits that help people pay their up-front insurance premiums.

Hickenlooper said 45,000 people in Colorado currently benefit from the subsidies. Data from the Kaiser Family Foundation earlier this year put the number at about 33,000.

(For more on how the CSRs work, see our explainer.)

Insurers have said for months that ending the subsidies would cause premiums to increase significantly. Because of longstanding doubts that Trump would continue the payments, state insurance officials allowed carriers to file two sets of proposed 2018 rates for review earlier this year. When the Division of Insurance announced the approved 2018 rates last month — with an average increase of 27 percent — those rates assumed that the subsidies would be paid.

Now that Trump has announced he will not pay the subsidies, the Division of Insurance will switch to the alternate rates — which average an additional 6 percent for all carriers, though could be as high as an additional 14 percent for some, the division has previously announced. No insurers will leave the market for 2018 as a result of the subsidy decision.

“It doesn’t help people and will actually hurt consumers,” Colorado Insurance Commissioner Marguerite Salazar said in a statement Friday. “However we knew this could happen and we were prepared with a contingency plan.”

The federal tax credits will blunt some of the increase for those who receive them. But about 35 percent of people in the market in Colorado make too much money to qualify for a credit, meaning they would have to bear the full costs of the increase.

Overall, about 8 percent of Coloradans buy their health insurance on their own in the individual market.

In his statement, Hickenlooper said he has asked state officials to come up with ways to help continue coverage for people who might otherwise fall out of the market as a result of changes to the Affordable Care Act. He also called on Congress to step in and pass a bill to pay the subsidies, if the White House won’t.

“Governors are willing to work with Congress to stabilize our health insurance markets,” Hickenlooper said, “but to undermine the individual market is cruelty without benefit.”