WASHINGTON (AP) -- U.S. mortgage rates have suddenly jumped from near-record lows and are adding thousands of dollars to the cost of buying a home.
The average rate on the 30-year fixed loan soared this week to 4.46 percent, according to a report Thursday from mortgage buyer Freddie Mac. That's the highest average in two years and a full point more than a month ago.
The surge in mortgage rates follows the Federal Reserve's signal that it could slow its bond purchases later this year. A pullback by the Fed would likely send long-term interest rates even higher.
In the short run, the spike in mortgage rates might be causing more people to consider buying a home soon. Rates are still low by historical standards, and would-be buyers would want to lock them in before they rise further.
But eventually, more expensive home loans could price some people out and slow the housing market's momentum, which has helped drive the U.S. economy over the past year.
"People are getting off the fence a little bit more or choosing to buy now instead of choosing to buy three months from now," said Anthony Geraci, a Cleveland real estate broker-owner who says he's seeing more sales activity lately in his market.
Mortgage rates are rising because they tend to track the yield on the 10-year Treasury note, a benchmark for most long-term interest rates.
In early May, the average rate on a 30-year mortgage was 3.35 percent, just above the record low of 3.31 percent. The rate on 30-year loan soared from 3.93 percent last week to 4.46 percent this week -- the biggest one-week jump in 26 years.
The effect on buyers' wallets in just the past two months is striking.
A buyer who locked in a 3.35 percent rate in early May on a $200,000 mortgage would pay $881 a month, according to Bankrate.com. The same mortgage at a 4.46 percent rate would run $1,008 a month.
The difference: $127 more a month, or $45,720 over the lifetime of the loan. Those figures don't include taxes, insurance or initial down payments.