With the September 30th deadline looming, a government shutdown on October 1 is at stake as the two sides negotiate. tax credits will expire and nearly 24 million people will see their premiums skyrocket by 93% on average. tax credits will expire and nearly 24 million people will see their premiums skyrocket by 93% on average. Right now they can afford their health care barely. Credits expire, their bill jumps more than $17,000 a year.