Ohio's gas tax was never a separate charge at the pump
From October 4, Ohio cuts its gasoline tax from 38.5 cents a gallon to one hundredth of a cent for 90 days, until January 2, 2027. The diesel tax, 47 cents, is cut as well. The law also requires licensed fuel dealers to pass the savings on to customers. Most drivers would expect the pump price to fall by 38.5 cents the morning the holiday starts.
That expectation misses where the tax actually sits. A state gas tax is not added at the register the way a sales tax is. It is collected when fuel is bought wholesale, and its cost is built into the price that stations then post. So a cut has to travel the same route : through suppliers, and through stations that are still selling fuel they bought with the tax already paid. In an ordinary holiday, how much of the cut reaches the pump is decided along that chain, not set by the law that cut the tax. Ohio's rule that dealers must pass the savings on is an attempt to change that.
Several states have tried this before, and economists have measured what happened each time. Those measurements show why a full 38.5-cent drop overnight is not assured. They cannot say exactly what Ohio drivers will save, because none of them measured a rule like Ohio's.

- The Post (Athens) : DeWine signs gas tax holiday
- Ohio gas tax holiday explained
- Cleveland 19 : Relief at the gas pump coming after Gov. DeWine signs gas tax holiday bill
- Ohio General Assembly : HB 519 status
- Ohio Society of CPAs : Ohio's gas tax holiday enacted into law
- Federal Reserve Bank of Dallas working paper 2624 (PDF)
What past gas tax holidays actually delivered
The studies cover different states, years, kinds of tax and methods, and they mostly agree. Drivers got most of the cut and rarely all of it.
Illinois and Indiana, 2000 : when both states suspended their 5 percent sales tax on gasoline, about 70 percent of the cut showed up in lower pump prices. The authors estimate that in the short run somewhere between 60 and 80 percent of the cut reached drivers (Doyle and Samphantharak, Journal of Public Economics, 2008).
Maryland, Connecticut and Georgia, 2022 : the Penn Wharton Budget Model compared actual prices with an estimate of what they would have been without the holiday. By that measure, 72 percent of the savings reached drivers in Maryland, 71 to 87 percent in Connecticut and 58 to 65 percent in Georgia. The ranges come from using two methods, and the Connecticut and Georgia figures cover only the weeks up to mid-May, not the whole holiday.
The East Coast, 2022 : across 108 cities in 15 states, one study estimated an average of 79 percent, with large differences from place to place (Tsvetanov, Energy Economics, 2024).
Georgia and Indiana, 2026 : using prices from about 13,200 stations, economists found that Georgia's holiday this spring cut gasoline prices by 63.9 percent of the tax. When Indiana suspended its per-gallon excise on top of its sales tax, the combined share that reached the pump was 76 percent (Bradt and Taylor, Federal Reserve Bank of Dallas working paper 2624, August 2026, a preliminary paper not yet peer reviewed).
Each of these figures is an average for one state in one episode, measured in its own way. Together they say that drivers got a majority of the cut, not that any fixed share is a rule. None of them predicts what a particular station will charge or what a particular driver will save.

- Doyle and Samphantharak, Journal of Public Economics (2008)
- Doyle and Samphantharak, NBER working paper 12266
- Penn Wharton Budget Model : Effects of a state gasoline tax holiday
- Tsvetanov, Energy Economics (2024)
- Federal Reserve Bank of Dallas working paper 2624
- Federal Reserve Bank of Dallas working paper 2624 (PDF)
Why part of a gas tax cut stays with suppliers
Drivers keep buying roughly the same amount of fuel whatever it costs. The Penn Wharton Budget Model notes that when demand barely moves, suppliers can keep part of the benefit. That is one part of the explanation, not all of it : how much reaches the pump also depends on how suppliers and competing stations respond.
Location matters too. The study of 2022 East Coast holidays traced the differences from city to city to supply constraints, to how isolated a local market is, and to spillover across state lines, where stations compete with neighbors whose tax did not change.
The savings also shift over the course of a holiday. In 2022, Maryland's estimated price cut grew from about 12 cents just after the start to between 25 and 30 cents a gallon, then shrank before the holiday ended. Connecticut's price cut also shrank while the tax was still suspended. Georgia's went the other way, rising from about 7 cents in the first week to about 30 cents by mid-May. A single average hides all of this.

When the gas tax comes back, prices do not simply reverse
One common assumption is that prices rise faster when a tax returns than they fell when it was cut. The 2000 study supports that : in the authors' published estimates, about 70 percent of the suspension reached drivers, while 80 to 100 percent of the reinstatement did.
Georgia in 2026 went the other way. When the tax returned on June 3, gasoline prices rose by only 50.3 percent of the tax, compared with the 63.9 percent drop at the start. About four weeks later, when the data end, gasoline was still below its level before the holiday by roughly 14 percent of the tax. The authors point to how the tax is collected. Stations still selling fuel bought during the holiday paid no tax on it, and that put pressure on nearby stations to hold their prices. They also warn that four weeks may not be long enough to see where prices finally settle.
Maryland in 2022 offers a weaker hint. After its holiday ended, Penn Wharton's estimate put prices above where they would otherwise have been, but the difference was not statistically significant.
Different studies, different directions. The end of a holiday is not a mirror image of its start, and the evidence does not yet say which way it usually tilts.

Ohio's rule that the savings must reach drivers, and who pays for the roads
Ohio's law requires licensed dealers to pass the tax break on. As reported in local coverage, a dealer that fails to do so could face a licensing inquiry by the state Tax Commissioner and a referral to the Attorney General, and the state warns that keeping the savings may be treated as an unfair or deceptive act. Reports differ on exactly who holds which enforcement power. None of the studies above measured whether a rule like this changes how much reaches the pump. It may make past holidays a weaker guide to Ohio's, and how much it changes is a question this holiday will answer, not one the evidence answers yet.
The money has to come from somewhere. Ohio's gas tax pays for roads and bridges, and according to news reports the law sets aside about $725 million from the state's General Revenue Fund to cover the lost revenue, with another $250,000 for administration. Some coverage describes the money as coming from state reserve accounts instead. Either way, the relief at the pump is paid for out of general state money rather than road funds, which means taxpayers as a whole, including those who drive little or not at all.
The 2026 Federal Reserve Bank of Dallas study adds one more detail. Georgia's holiday offset about the same share, roughly 28 percent, of the per-gallon price shock for households at every income level, judged by the median income of the neighborhood around each station rather than the income of each buyer. It lowered the burden without changing who carried the most of it.
Drivers get most of a gas tax cut, but rarely all of it
A state gas tax is paid upstream, by the businesses that sell fuel wholesale, and its cost is built into the pump price. Cutting it gives drivers only what the supply chain passes down. In the holidays studied here, that was a majority of the tax and rarely all of it, mostly somewhere between about 60 and 80 percent, with wide differences between places, methods and weeks. What happens when the tax returns has varied from one holiday to the next.
Ohio's 90 days are one more test of that pattern, this time with a rule that says the full savings must reach the pump, and past holidays cannot say how much that rule will change. Whatever the price board shows in your town this month, the tax was never a separate line on it. It was folded into the price, and so is any cut.







