Gas prices change daily, vary by hundreds of miles within the same state, and can swing by a dollar or more per gallon in a matter of weeks. Understanding what drives those numbers helps you make sense of the pump price and anticipate when it might go up or down.
The Four Components of a Gas Price
Every dollar you pay at the pump is made up of four distinct costs. Their proportions shift over time, but the breakdown looks roughly like this at a national average price of $3.50/gallon:
Crude oil
~55% (~$1.93)The raw material. Set by global commodity markets.
Refining
~15% (~$0.52)Converting crude oil into usable gasoline.
Distribution & marketing
~15% (~$0.52)Pipelines, tanker trucks, station overhead, and profit margins.
Taxes
~15% (~$0.53)Federal (18.4¢/gal) plus state taxes that range from 9¢ to 68¢.
The crude oil component is why gas prices react so sharply to global events. When oil moves $10 per barrel, gas prices move roughly $0.24 per gallon within days.
Why Crude Oil Prices Move
Crude oil trades on global commodity markets, and its price is set by supply and demand at a worldwide scale. The key forces:
OPEC+ production decisions
The Organization of Petroleum Exporting Countries and allied producers control roughly 40% of global oil supply. When they cut production quotas, supply tightens and prices rise. Their meetings are closely watched by energy markets.
U.S. production levels
The United States is now the world's largest oil producer. American shale output can partially offset OPEC cuts, which is why U.S. production data (released weekly by the EIA) moves markets.
Global demand signals
Strong economic growth in China or the U.S. pushes demand higher. Recessions or slowdowns reduce demand. COVID-19 caused the most dramatic demand collapse in modern history. Prices briefly went negative in April 2020.
Geopolitical disruptions
Wars, sanctions, and political instability in major oil-producing regions (Middle East, Russia, Venezuela) create supply uncertainty. Traders price in that risk immediately, before any actual supply is disrupted.
Why Prices Differ by State and City
California drivers regularly pay $1.00–$1.50 more per gallon than drivers in Mississippi. That gap comes from three compounding factors:
- 1State taxes: California's gas tax is among the highest in the country at $0.68/gallon. Mississippi's is $0.18/gallon.
- 2Reformulated fuel requirements: California requires a special cleaner-burning blend that costs more to produce and can only be made at a handful of refineries. Any refinery outage causes immediate shortages and price spikes.
- 3Distance from supply: States close to Gulf Coast refineries (Texas, Louisiana) have lower distribution costs. West Coast and Northeast states pay more to get fuel delivered.
Why Prices Rise Faster Than They Fall
You've probably noticed that gas prices jump overnight when oil prices rise, but take weeks to come back down when oil falls. This asymmetry is well-documented and economists call it "rockets and feathers" pricing.
Station owners raise prices quickly when wholesale costs rise because they need to replace inventory at the new higher price. But when wholesale costs fall, they're sitting on inventory they already paid for at higher prices, and they have little competitive pressure to cut prices until their neighbors do first.
Urban areas with many competing stations tend to see prices fall faster than rural areas where drivers have fewer alternatives.
Seasonal Patterns
Gas prices follow a predictable seasonal pattern in most years:
What You Can Control
You can't control crude oil markets or state tax policy, but you can control where you buy gas, when you fill up, and how efficiently you drive. Even small changes compound significantly over a year.
Use our gas prices by state tracker to see current prices across the country, or our gas price history tool to see how prices have moved over time.