If the end-of-year expiration date is not extended, enhanced ACA marketplace participants will see premiums rise anywhere between $300 and $1000. Six in 10 of the respondents to a KFF poll said a $300 increase would put an unsustainable strain on their budget.

WASHINGTON — Americans who purchase their health insurance through the Affordable Care Act marketplace are bracing for a steep rise in costs next year that many say they will not be able to afford, according to a poll released Thursday by the nonpartisan health organization KFF.

Nearly 60% of enrollees surveyed could not cover the costs of a $300 annual increase in their premiums, while an additional 20% said they couldn’t afford a $1,000 jump in prices per year.

About 90% of those polled said it would be somewhat or very difficul

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