Kalshi Gas Prices: How Gas Price Contracts Settle (And Who AAA Is)
If you have looked up Kalshi gas prices, what you have actually found is a monthly contract that pays out based on one number from one organization most Americans know for towing cars. Every Kalshi market lives or dies on this principle: the contract settles on the referee's number, not your number, and the rules name the referee in advance. In the gas markets, that referee is AAA. Not the government's energy agency, not a price-tracking app, and definitely not the sign at the station down the road.
That sounds simple, and mechanically it is. But the resolution rule contains a handful of words that quietly decide who gets paid, and traders who skim past them are pricing a different contract than the one they bought. By the end of this piece you will know exactly which words those are, and why one of them turns an exact tie into a loss.
The Quick Answer
Kalshi gas price markets settle against AAA's national average price for a gallon of regular gasoline, measured on the last day of the month: if that average is strictly greater than the market's strike, the market resolves Yes, and an exact match on the strike resolves No. It is a monthly series with a publicly visible input, which makes it one of the most watchable settlement processes on the exchange. The full rule, the referee behind it, and the two traps in the wording are all below.
The Rule, Verbatim
A gas price prediction market is only as good as its referee, so start where the money starts. Here is the resolution rule from one of the national monthly markets, exactly as the rulebook states it:
"If average regular gas prices for United States are strictly greater than $5.00 on Aug 31, 2026 according to AAA, then the market resolves to Yes."
One sentence, and every phrase in it is doing work. "Average regular" names the grade and the aggregation. "For United States" names the geography. "Strictly greater than" sets the inequality. The date names the measurement day, which for this series is the last day of the month. And "according to AAA" names the Source Agency, the single authority whose number grades the contract.
Readers of our explainer on how prediction markets work will know the structure already: yes/no contracts that settle to $1 or $0, with the price in cents readable as a probability. What makes each market family distinct is only ever the referee and the clock. So let's meet this one's referee.
Who AAA Is (And Who It Is Not)
AAA is the American Automobile Association, the federation of motor clubs best known for roadside assistance and travel maps. It is also, less famously, the publisher of a daily national average price for a gallon of gasoline, compiled from station-level price data across the country and posted publicly on AAA's own gas prices site, the exact source the market's rulebook points to. That daily national average for regular grade is the settlement number.
The distinction matters because AAA is not the only organization that publishes a US gas price, and none of the others settles this contract:
- The EIA (the US Energy Information Administration) runs its own retail gasoline price survey, published weekly. It is a government statistic, it is widely quoted, and it is irrelevant to this contract.
- GasBuddy aggregates crowd-reported prices from its app. Useful for finding a cheap fill-up, irrelevant to settlement.
- The Sign Down The Road is one station, one day, one town. It is an anecdote, not the average.
These sources can disagree by meaningful amounts on the same day, because they measure different station sets on different schedules with different methods. The phrase I keep coming back to is "according to AAA," because it dissolves every argument in advance: when the measurement day arrives, exactly one number grades the market, and the rules told you months earlier whose it would be. If you think a settlement was graded against the wrong figure, there is a formal process for that, which we cover in what happens when a Kalshi market is disputed. But "my app said something different" is not a dispute. It is a different referee.
"Strictly Greater Than": A Worked Example At The Strike
The second load-bearing phrase is the inequality. "Strictly greater than" means the Yes side needs the settlement number to clear the strike, not touch it. Here is how three possible AAA prints grade against the $5.00 strike in the rule quoted above:
| AAA National Average On The Measurement Day | Is it strictly greater than $5.00? | Market resolves |
|---|---|---|
| $5.01 | Yes | Yes |
| $5.00 Exactly | No | No |
| $4.99 | No | No |
How the strict inequality grades three possible settlement prints against the $5.00 strike named in the market rules quoted above.
The middle row is the one that costs people money. A print that lands exactly on the strike feels like a push, and a sportsbook would grade it as one and refund the bet. An event contract has no push. Every market resolves Yes or No, so the boundary case has to belong to one side, and in this wording it belongs to No. A Yes holder who watched the average climb all month to land precisely on the number did not almost win. He lost, at full contract value, by zero cents.
That is not a quirk of the gas series. It is how strike-based contracts work across the exchange, and it is why reading the inequality is as important as reading the strike.
One Grade, One Country
The third phrase, "average regular gas prices for United States," defines what is actually being averaged, and it excludes more than it includes.
One grade. The number is for regular gasoline. Midgrade, premium, and diesel all have their own AAA averages, and all of them are typically well above regular. Drivers whose cars take premium are paying a number that is not even the right grade, let alone the right geography.
One country. The number is a national average, and a national average is a number almost nobody actually pays. A state or a city can sit a dollar away from the figure that settles the contract, and California routinely is: its state average runs far above the national number as a matter of course, thanks to taxes, fuel formulation requirements, and refining logistics. A trader in Los Angeles who prices the national contract off his own windshield view is systematically wrong in one direction, every month.
This is the same lesson our weather markets hub teaches with thermometers: temperature contracts settle on one named station, not "the city," and the traders who lose are the ones grading the market against their own backyard. The gas version of the settlement-station trap is grading a national average against your local pump.
A Monthly Clock With A Public Input
The US gas price series is monthly. Kalshi lists the series at a monthly frequency, and each market measures AAA's number on the last day of its month. This is not a daily market, and the cadence changes the whole experience of trading it.
Compare it to the two clocks we have covered elsewhere in this cluster. Kalshi's economic data markets settle on embargoed releases: nothing is knowable until a scheduled instant, and then everything is. Daily weather markets drift toward their answer over hours as observations arrive. The gas markets are a third animal: the settlement input is published every single day, in public, for the entire life of the contract. Anyone can watch AAA's national average walk toward or away from the strike all month long.
That transparency has a consequence worth understanding before you trade: a slow-moving, publicly visible average rarely produces a settlement shock. By the final week of the month, the market usually knows roughly where the number is going to land, because the number itself is telling everyone daily, and prices converge accordingly. The uncertainty that remains near month-end lives almost entirely in the strikes close to the current average. Which is exactly where the boundary row of that table above, the exact-tie-loses row, stops being a curiosity and becomes the whole trade. Late entries near the strike are also where Kalshi's per-contract fees matter most, since the fee is largest relative to edge when a contract trades near the middle of the board.
The State And Yearly Series Are Different Instruments
Kalshi does not list just one gas price series. Alongside the national monthly markets there are state-level series, and yearly high/low series such as markets on the lowest gas price of the year in Florida or New York. They look similar on a category page. They are not interchangeable.
A Florida series settles on AAA's Florida average, not the national one. A yearly-low series asks whether the average ever dips below a level at any point in the year, which is a completely different question from where the number sits on one measurement day. Every one of these has its own rulebook naming its own geography, its own window, and its own inequality. A few series in the wider gas category even name a different referee entirely; Kalshi lists yearly-range markets settled on the EIA's survey rather than AAA's average, which is one more reason the rulebook, not the category page, tells you what you are holding. The ticker and the rules page tell you which instrument you are holding; the category page does not. Treating a state series as the national one, or a yearly-range market as a month-end snapshot, is an unforced error that the rules were written to prevent.
The Risk Shape Never Changes
However well you read the rules, the payoff arithmetic of selling long shots is the same here as everywhere else on the exchange. Selling an unlikely outcome collects a small premium and risks most of a dollar, and roughly speaking, one loss erases the premiums from about 19 wins. That arithmetic, not the hit rate, is what makes position sizing the whole game. A red month that wipes out a green stretch is the shape of that trade working as designed, not a malfunction.
The gas series adds its own flavor of this trap. Because the input is public and slow, deep out-of-the-money strikes look free almost all month, and selling them feels like collecting rent on a foregone conclusion. The months that break that pattern (a hurricane hitting refining capacity, a sudden crude spike) are precisely the months when every seller of the same tail loses together. Whether market prices in general earn their confident look is a question we take up in whether prediction markets are actually accurate; the sizing math is what protects you while the sample builds.
No Forecast Here
We are not predicting gas prices. Nothing on this page is a pick, a lean, or a recommendation, and that is a standing rule across our prediction-market coverage: we publish how the market works, never a position to copy. Stokastic trades event markets and holds positions in them, which is exactly why the line matters. If you want probability-first analysis in markets where our analysts do publish selections, the free expert picks page is the honest version of that, in sports markets we actually cover.
What we hope you take instead of a forecast is the reading discipline, and it travels well beyond the gas board. A sportsbook price is the same object as a Kalshi contract: a probability with a toll attached. A standard -110 line at DraftKings or FanDuel carries the book's margin inside the odds, and stripping it out, de-vigging the market into a no-vig fair price, is the same find-the-real-number habit this whole article has been teaching. That is the job OddsShopper's odds screen and EV Calculator do in the sports markets we cover: line shopping a price across 100+ books, de-vigging it into a fair number, and the tool surfaces the prices that beat it. Gas contracts are not on that screen, and we will not pretend they are. The discipline transfers; the coverage does not.
So hold the three things the rulebook actually cares about. One referee: AAA's national average for regular, and no other number on earth. One inequality: strictly greater than, where the tie goes to No. One clock: monthly, measured on the last day, with the input published daily in plain sight. Hold those, and the sign down the road becomes what it always was, an anecdote about one station, while the contract quietly settles on the only number the rules ever named.
FAQ: Kalshi Gas Price Markets
What do Kalshi gas price contracts settle on? AAA's published national average price for a gallon of regular gasoline, measured on the date named in each market's rules. For the US monthly series that is the last day of the month. No other source, including the EIA's weekly survey or app-based trackers, has any role in settling these national monthly markets.
What happens if the AAA average lands exactly on the strike? The market resolves No. The rules require the average to be strictly greater than the strike for a Yes, so an exact match fails the inequality. There are no pushes or refunds in event contracts; every market resolves to one side.
Does the gas price in my city affect the contract? Only through its small weight in the national average. The contract grades one nationwide number for one grade of fuel, and a state or city can sit a dollar away from it. California's average, for example, routinely runs far above the national figure, so local prices there are an especially poor proxy for the settlement number.
Are there Kalshi gas markets for individual states? Yes. Kalshi lists state-level series and yearly high/low series, such as markets on the lowest gas price of the year in Florida or New York, alongside the national monthly markets. Each settles on its own AAA series under its own rules, so always confirm the geography and window in the rulebook, and remember a contract's price in cents reads as a probability for that specific question, not the national one.
Disclosure and fine print. Stokastic trades event markets on Kalshi and holds positions in them; where a settled position is described in this series, we were the seller. We have no affiliate or commercial relationship with Kalshi, though we do carry sign-up offers for some other prediction-market and betting platforms. Kalshi event contracts are CFTC-regulated derivatives traded on a designated contract market, not sportsbook wagers, and a position can lose its full value. 18+, available where Kalshi operates; the risk of loss is real and, on the side we trade, individually large. This is an open research log of a strategy we have not yet proven. Nothing here is trading advice, a forecast of gas prices or any other figure, or a pick.
