Michigan vs Ohio Gas Tax: Is It Worth Crossing the Border?

Michigan's state tax on gasoline is higher than Ohio's, and neither state charges sales tax on fuel. In 2026 Michigan charges 52.4¢ per gallon plus a 1¢ environmental fee (53.4¢ in total), while Ohio's standard rate is 38.5¢ for gasoline and 47¢ for diesel. Ohio's tax is temporarily cut to almost zero from October 4, 2026 through January 2, 2027, so for now the gap is about 53¢ a gallon. Whether a trip to Ohio pays off depends on how far out of your way you drive and how many gallons you buy.

An earlier version of this page said Ohio adds 5.75% sales tax to gas, making it pricier than Michigan. That was wrong: Ohio exempts taxed motor fuel from sales tax, so Ohio's per-gallon tax advantage is real.

How do Michigan and Ohio fuel taxes compare?

The federal tax is the same on both sides of the line, so it cancels out of any comparison.

Michigan: higher per-gallon tax, no sales tax

Michigan's road funding package (Public Acts 17–20 of 2025) changed fuel taxes on January 1, 2026:

• Per-gallon tax: a 51.0¢ base rate, adjusted for inflation, produced 52.4¢ per gallon for 2026 on both gasoline and diesel, according to Treasury's November 25, 2025 rate notice. The rate before was 31.0¢.
• Sales tax: gasoline and diesel are exempt from Michigan's 6% sales and use tax on and after January 1, 2026, and the prepaid sales tax collected at the wholesale level ended with December 2025, per Treasury's notice on Public Acts 17–20 of 2025.
• Environmental fee: the separate 1¢ per gallon environmental protection regulatory fee still applies, which is why national tables such as the Tax Foundation's gas tax table list Michigan at 53.4¢.

For the full breakdown of the 2026 change, see our Michigan gas tax guide.

Ohio: lower per-gallon tax, no sales tax, and a temporary holiday

• Standard rates: 38.5¢ per gallon of gasoline and 47¢ per gallon of diesel, unchanged since the 2019 transportation budget.
• Sales tax: Ohio's sales tax statute, R.C. 5739.02(B)(6), exempts motor fuel on which Ohio's motor fuel tax is imposed. The Ohio Department of Taxation's 2019 information release notes the exception: fuel whose motor fuel tax is refundable (for example, fuel used off-road) is not covered.
• Fuel tax holiday: House Bill 519, signed October 1, 2026, cuts Ohio's motor fuel tax to 0.0001¢ per gallon from 12:01 a.m. October 4, 2026 through 11:59 p.m. January 2, 2027, for both gasoline and diesel. The Department of Taxation's October 2, 2026 bulletin says retailers must pass the full savings to customers and that failing to do so may be referred to the Ohio Attorney General.

Standard Ohio rates return on January 3, 2027 unless the legislature extends the holiday. Michigan's rate is recalculated for inflation each January, so check the 2027 figure when Treasury publishes it.

What does that mean at the pump?

Because neither state applies sales tax, the tax difference passes straight through to the pump price, as long as everything else is equal. Hypothetical example with $3.00 per gallon before state taxes (wholesale cost, station margin, and the 18.4¢ federal tax) on both sides:

In practice the price before state taxes is not equal. Wholesale costs, supply contracts, local competition, and brand all move prices by more than a few cents, and in the first days of a tax holiday some stations are still selling fuel they bought with the tax included. Treat the tax gap as the maximum structural difference and check live prices before you drive.

Break-even math for a trip to Ohio

The question is whether the tax you save on the fill-up is more than the fuel you burn getting there.

• Savings per fill-up = gallons bought × tax gap per gallon
• Detour fuel cost = round-trip extra miles ÷ your mpg × price per gallon
• Break-even round-trip miles = gallons × tax gap × mpg ÷ price per gallon

Assumptions for the table: 25 mpg, $3.50 a gallon, and no difference in pre-tax price.

Example for the 15-gallon standard row: 15 × $0.149 = $2.235 saved; break-even = 15 × 0.149 × 25 ÷ 3.50 = 16.0 miles.

These break-even distances cover fuel only. They ignore your time and the wear on your car, which push the real break-even shorter.

Worked example: a 20-mile round trip from the Monroe area

A driver with a 15-gallon fill-up, 25 mpg, and $3.50 gas adds 20 miles round trip to reach an Ohio station.

• Detour fuel: 20 ÷ 25 = 0.8 gallons × $3.50 = $2.80
• At standard rates: 15 × $0.149 = $2.24 saved → net loss of $0.56
• During the holiday: 15 × $0.534 = $8.01 saved → net gain of $5.21

At standard rates, a dedicated trip only pays if the Ohio station is barely out of your way. During the holiday, a modest detour pays off if Ohio pump prices actually reflect the tax cut.

When it makes sense

• You already drive into Ohio for work, shopping, or family. Fill up on the Ohio side and the detour cost is zero, so you keep the full gap: about $2.24 on 15 gallons at standard rates, or $8.01 during the holiday.
• You live near the line (Lambertville, Bedford Township, Erie Township, and other southern Monroe and Lenawee County communities) and the nearest Ohio station is only a few miles further than your usual one.
• You fill a large tank. A 26-gallon pickup tank saves 26 × $0.149 = $3.87 at standard rates and 26 × $0.534 = $13.88 during the holiday.

When it does not

• A dedicated trip of more than about 15–20 miles round trip at standard rates.
• Ohio stations near the border that price close to Michigan stations anyway. Check the actual posted prices rather than assuming the full tax gap shows up.
• Small fill-ups. Topping off 8 gallons saves $1.19 at standard rates.

Diesel and commercial fuel

For diesel, the standard-rate gap is only 6.4¢ per gallon (53.4¢ in Michigan vs 47¢ in Ohio). A 100-gallon fill saves $6.40 before any detour. During the holiday the gap is the same 53.4¢ as for gasoline, so the same 100 gallons would save about $53.40 at the pump.

Interstate carriers that file under the International Fuel Tax Agreement do not keep that saving. IFTA carriers owe each member jurisdiction's tax on the miles they drive there and receive credit for tax paid at the pump, so buying cheaper-tax fuel in Ohio lowers the pump bill but raises the amount owed on the quarterly IFTA return for Michigan miles. Michigan's 2026 package also ended the separate use tax on fuel used by IFTA carriers (Public Act 18). To estimate a quarterly return, use the IFTA tax calculator.

Fuel stations and distributors also had to deal with Michigan's one-time inventory tax on fuel held at the end of 2025; see the Michigan fuel inventory tax calculator.

Annual state fuel tax for a typical driver

For a driver who covers 14,000 miles a year at 25 mpg (560 gallons):

Neither total includes sales tax because neither state charges it on fuel. Before 2026 the comparison was closer: Michigan charged 31¢ per gallon plus 6% sales tax on the pump price, and the 2026 swap was designed to move revenue from the sales tax into the per-gallon tax that funds roads. The Michigan gas tax calculator shows the change for your own mileage and vehicle.

How Michigan compares with its other neighbors

Using the Tax Foundation's July 2026 table, which counts each state's per-gallon taxes and fees (and, for Indiana and Illinois, sales taxes applied to fuel):

Along the Indiana line the incentive runs the other way: Indiana's total state tax is higher than Michigan's. Upper Peninsula drivers near Wisconsin face a bigger gap than Toledo-area drivers do at Ohio's standard rates.

Is it legal to buy gas in Ohio and bring it back?

Yes. Fuel tax is collected when fuel is distributed and sold, so the Ohio tax built into the pump price is the only state fuel tax on what goes into your tank, and you owe nothing more to Michigan when you drive home. If you fill portable containers, use containers approved for fuel and follow the station's rules; some stations restrict container fills.

Cheaper ways to cut fuel spending

The tax gap is not the only lever, and most of the others need no extra driving:

• Compare posted prices on a price-tracking app or map before filling. Price differences between stations in the same town often exceed the standard-rate tax gap.
• Use grocery or station loyalty discounts you already qualify for. Stack them with an Ohio fill-up if you are crossing anyway.
• Keep tires at the pressure on the door placard and combine errands into one trip; both cut gallons without changing where you buy.

Bottom line

At Ohio's standard rates, the state tax on gasoline is 14.9¢ a gallon lower than Michigan's, worth about $2 to $3 per fill-up, which a dedicated trip of more than 15–20 miles round trip wipes out. During Ohio's fuel tax holiday (through January 2, 2027), the gap is about 53¢ a gallon, and filling up in Ohio makes sense for anyone already crossing the line and for border-area drivers with a short detour, provided local pump prices actually reflect the cut.

Fuel prices change daily and this comparison uses hypothetical prices to isolate the tax effect. Check current posted prices before you drive.