NEW YORK (CNNMoney.com) -- Holiday shoppers will need to bump up their budget for one purchase this year, and they can't even put it under the tree: gasoline.
The price of fuel is up 13.6% from last December and 76% higher from December 2008, according to a new study from the Oil Price Information Service.
Nationwide, drivers are estimated to spend $305 on gasoline in December.
Who's hardest hit? People in Montana.
Montana households are estimated to spend over $449 on gas in December, representing a 12.74% slice of their overall household budget.
Residents of New York are getting off relatively easy. Households there are estimated to spend around $214 on gas in December, just 4.71% of their household income. Other low-cost states include Maryland, Massachusetts, Nevada and Illinois.
It's common that people in rural states spend a higher percent of their salary on gas, as incomes tend to be lower. They also often have further to drive for work, and tend to buy larger vehicles.
The study's authors noted high fuel prices are likely to have a big effect on other things people purchase.
"Rising gas prices are more relevant to household budgets than a cursory glance at numbers might indicate," said the report, pointing to a forthcoming study. "Higher fuel prices motivate stunning behavioral changes in shopping patterns, and influence choices for premium versus discount merchandise."
And don't expect much relief going forward.
Based on the current high price of crude oil and historical trends, the authors say gasoline prices in the $3.75 range could be a reality by spring.
More than 5% of DACA recipients have started their own businesses since enrolling the program, according to a recent survey. More
A year ago, Trump promised to repeal Obamacare during his first year in office. That didn't happen, but the Trump administration has been successful at chipping away at the Affordable Care Act in other ways. Here's how. More
Amazon has announced its list of 20 cities that are finalists to host its second headquarters. But who will -- and who should -- win? More
In 1998, Ntsiki Biyela won a scholarship to study wine making. Now she's about to launch her own brand. More
Amazon has announced a list of 20 cities as potential locations for its second headquarters. The winner is likely to see a significant boost to its real estate market. More