By PHILIP ELLIOTT (WASHINGTON, AP) — College students taking out new loans for the fall term will see interest rates twice what they were in the spring — unless Congress fulfills its pledge to restore lower rates when it returns after the July 4 holiday.

Subsidized Stafford loans, which account for roughly a quarter of all direct federal borrowing, went from 3.4 percent interest to 6.8 percent interest on Monday. Congress’ Joint Economic Committee estimated the cost passed to students would be about $2,600.

“It’s kind of surprising; that’s a big jump,” said Rebecca Ehlers, an Iowa State University senior majoring in math.

A $1,000 subsidized Stafford loan is part of her financial aid package and she said she’s reconsidering how she pays for school.

“I may work more or ask my parents for money rather than going through all that,” said Ehlers, 21.

She — and millions of others who use federal student loans to pay for their education — has some time before she has to make that decision. But not much.

“The only silver lining is that relatively few borrowers take out student loans in July and early August. You really can’t take out student loans more than 10 days before the term starts,” said Terry Hartle, a top official with colleges’ lobbying operation at the American Council on Education.

But that is little consolation for students looking at unexpected costs waiting for them on graduation day if Congress doesn’t take action before it breaks again for the month of August.

“I’m upset by it,” said Kolton Gustafson, a George Washington University political science major heading into his senior year. “I wish there was a larger reaction to it.”

“Many students are saying and thinking, ‘I’ll pay it later,'” the Grand Junction, Colo., native added. “That’s why you don’t see more people fighting back.”

Students only borrow money for one year at a time. Loans taken before Monday are not affected by the rate hike.

Both political parties tried to blame the other for the hike and student groups complained the increase in interest rates would add to student loan debt that already surpasses credit card debt in this country.

“The federal loan program is burying them in debt. With the doubling of the interest rate, Congress is pushing student borrowers to their limit,” said Michael Russo, federal program director with consumer advocate U.S. PIRG.

Lawmakers knew for a full year the July 1 deadline was coming but were unable to strike a deal to dodge that increase. During last year’s presidential race, both parties pledged to extend the 3.4 percent interest rates for another year to avoid angering young voters.

But the looming hike lacked sufficient urgency this year and Congress last week left town for the holiday without an agreement. Instead, the Democratic-led Senate pledged to revisit the issue as soon as July 10 and retroactively restore the rates for another year — into 2014, when a third of Senate seats and all House seats are up for election.

Even when lawmakers return, there’s no guarantee there will be the votes to restore the lower rates.

“When we pass a deadline and there are not immediate effects, the sense of urgency that accompanies a deadline evaporates and that is what I’m afraid will happen here,” Hartle said.

For months, the student loan issue was the subject of partisan sniping — sometimes within the same party.

Obama’s budget proposal included a measure that would have linked student loan interest rates with the financial markets. Fellow Democrats called that unacceptable because there were no guarantees interest rates would not skyrocket if the economy improves.

The Republican-led House, meanwhile, co-opted the president’s proposal and passed a bill in May that linked interest rates to the financial markets but with a cap on how high rates could climb.

The Democratic-led Senate, meanwhile, tried for a two-year extension that failed to overcome a procedural hurdle. A Republican measure, similarly, came up short.

Top White House officials told allies to find any deal that could win enough votes and avert the politically and fiscally costly doubling.

An attempt at a bipartisan agreement fizzled last week when the Democratic chairman of the Senate education panel, Sen. Tom Harkin of Iowa, declared it a non-starter and urged lawmakers to extend the rates for one more year — when they get back next week.

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Associated Press writer Stacy A. Anderson contributed to this report.