How Do Gas Stations Make Money on Gas?

You're standing at the pump, watching the number climb past $50, thinking somebody is getting rich off this. Somebody is. It isn't the station behind you. When that number climbs, they usually make less on your tank, not more. That sounds backwards, and it stays backwards until you know what happened on a Wednesday in June 1964, in a store outside Denver. John Roscoe flipped a switch on a box that an inventor named Herb Timms had built and carried into his shop and let his customers pump Toronto Gasoline. The first time in America anyone could do that without an attendant standing there to reset the pump. Later that year, he offered to get up at the industry's annual meeting and explain what he'd found. He shared the panel with a man who ran a meat market in Portland, Oregon. When the talks ended, every question from the floor went to the meat market guy. Nobody wanted to hear about gasoline. Sixty years later, nearly everything about the corner you're standing on, the canopy, the sign, the doors, the smell of coffee when they open, comes out of what Roscoe worked out that morning. And the markup on the fuel has almost nothing to do with it. Start with the obvious answer, because it's the one everybody gives. Stations buy gasoline wholesale, market up, sell it, and pocket the difference. Ask American drivers what that difference is worth, and plenty of them will tell you $2 a gallon. That's not a made-up figure. It's what a NASConsumer survey found, huge numbers of people, believing the station clears at least $2 in profit on every gallon it pumps. The markup is real. It's just not theirs to keep. Before the fuel reaches you, someone has to truck it from the storage terminal to the store. The tanks under your feet have to be monitored, insured, and eventually dug up. The canopy needs lighting. The pumps need replacing, since a certain amount of gasoline simply evaporates, spills, or drives away without paying. It's a surprisingly long list of costs for a product nobody stands around browsing. By the industry's own arithmetic, this is NASC running the numbers on its own members. The average station keeps something in the range of $0.13 a gallon before tax. Drivers guess $2 a gallon. The truth is closer to $2 a tank, which raises the obvious follow-up. Why not just charge more, because of the sign? Gasoline is one of the only things in America whose price is posted in letters big enough to read from a moving car. And when drivers are asked what decides where they stop, they say price, ahead of everything else. So the number on that sign isn't really set by what the fuel cost, it's set by what the station on the opposite corner did with its own sign that morning. Nudge yours up, and you can watch the traffic turn left instead. It's a business where the pricing decision gets made in public, several times a week, by whoever blinks last. And the biggest single bite out of that markup isn't the trucking, or the tanks, or the person mopping the forecourt. It's the swipe. In 2023, credit card fees cost stations $0.084 on every gallon sold. Sit with that for a second. The station buys the fuel, stores it, insures it, pumps it, and cleans up after it, and ends up with about $0.13. The payment network never touches the gasoline, and it takes $0.084. Worse, the fee is a percentage of the sale, so it climbs automatically every time the pump price climbs. While the station, scrapping for drivers whose choose entirely on price, is usually squeezing its own margin at exactly the same moment. That's what you were sensing at the pump. An expensive week is often a worse week for the station than a cheap one. So why does anyone stay in this business? Because of where the money actually lands. In 2025, fuel was most of the money that went through America's convenience stores. And under $0.39 of every dollar of gross profit, every dollar of gasoline works far less hard than every dollar spent inside the building. And part of the answer is what happened to that building while you weren't looking. Twenty years ago, the inside of a gas station was a cashier, a wall of cigarettes, a lottery machine, and a pot of coffee that had been sitting since morning. Now it's a kitchen. Prepared food and dispensed drinks, the pizza, the fried chicken, the fountain machine, the cold brew are the largest category inside and their share of everything sold in there has more than doubled in 20 years to nearly $3 in every 10. Somewhere along the way, the repair bay became a beverage cooler and nobody announced it. Which is not what Roscoe was building. He wasn't a gas man who added snacks. He was a grocer who added gasoline. And he said later that the whole thing worked because he already had the facility, the building, the staff, the parking lot. Gasoline in those days carried a margin like anything else on his shelves, so the pumps were supposed to roughly double what the store was already making on a site you've already paid for. Business took off fast enough that he put the same setup into more of his stores. Sixty years later, the logic runs backwards. Roscoe added pumps so his store would earn more. Today a station keeps its pumps so the store gets somebody to walk into. Now cross the road to the other kind of forecourt, the one with a line of cars wrapped around it. Warehouse clubs sell the same gasoline out of the same kind of tank and they sell it cheaper. Between April 2025 and March 2020 26, Costco's pump prices ran about 24 cents a gallon under the state averages, according to a study by the research firm Gordon Haskett using GasBuddy data. That discount is about two-thirds of everything the corner station marks a gallon up by before it has paid a single one of its own costs. That gap is far too wide to be explained by clever buying. It's being paid for from somewhere else, the membership card. Costco's chief financial officer, Gary Millerchip, has said members who buy gasoline visit more often, spend more, and renew at higher rates. The cheap gas isn't a product, it's an argument for the card. So here are two forecourts a few hundred feet apart selling fuel that may have come off the same truck. One is paid for by breakfast sandwiches and fountain drinks. The other is paid for by an annual fee. Neither of them is making a living on gasoline, and the corner station has to post a number that survives being compared at 40 miles an hour with a company that genuinely does not care what gasoline earns. Which brings you back to where you started, hand on the nozzle, watching the number go up. The sign out front isn't a price, it's a bid. And the gasoline is the admission fee, priced as close to nothing as the owner can survive. Because the whole point is to get your car onto that concrete and your feet pointed at the door. A modern gas station is a snack shop that happens to keep a few thousand gallons of flammable liquid buried in the yard. Here's my opinion, and you're welcome to disagree with it. That giant lit price sign is the worst thing that ever happened to the people who sell gasoline and they built it themselves. By putting one number where you can read it from a moving car, the industry taught an entire country to choose a station on that number and nothing else. Once you compete on a single visible figure, the figure only goes one way. Every other retailer on that road gets to compete on selection or service or the atmosphere inside. Gas stations gave all of that up for a sign and then had to install a kitchen to stay alive. It's the only business I can think of that advertises its thinnest margin product in numbers three feet tall. The nozzle clicks off. You put the cap back on and you look at the doors because it's cold and there's coffee in there. Those twelve steps were the point the whole time.