Alabama vs Mississippi gas prices
Regular gas is $0.08 a gallon cheaper in Mississippi — $1.20 on a 15-gallon fill-up. The two share a border, so that gap is worth knowing before you cross it.
Alabama
Mississippi| Grade | AL | MS | Diff. | |
|---|---|---|---|---|
| Regular | $3.74 | $3.66 | $0.08MS | Mississippi |
| Midgrade | $4.21 | $4.10 | $0.11MS | Mississippi |
| Premium | $4.61 | $4.49 | $0.12MS | Mississippi |
| Diesel | $5.15 | $5.02 | $0.13MS | Mississippi |
Where the $0.08 gap actually comes from
All of it is tax, and then some. The fuel itself is dearer in Mississippi before tax — by $0.05 a gallon — yet it is still $0.08 cheaper at the pump, because Alabama levies $0.13 more per gallon. Policy is doing all of the work here and overcoming a product disadvantage on the way.
Fuel, refining, distribution and marginFederal and state taxes Local county and city fuel taxes are not included, and Alabama permit them. Pre-tax figures are estimates — see the note below.
What the gap is worth
Based on today’s $0.08 per-gallon difference, which moves week to week. Use the fuel cost calculator for your own mileage and vehicle.
Prices by metro area
State averages hide a lot. These are the cheapest metros AAA reports on each side.
Other comparisons
Frequently asked questions
Is gas cheaper in Alabama or Mississippi?
Regular gas is cheaper in Mississippi, at $3.66 a gallon against $3.74 in Alabama — a gap of $0.08, or 2.2%. On a 15-gallon fill-up that is $1.20. Figures are AAA daily state averages for 2026-08-02.
Why is gas more expensive in Alabama?
Entirely because of tax. Mississippi actually pays more for the fuel itself — $0.05 a gallon more before tax — but Alabama levies $0.13 more per gallon, which more than reverses the advantage.
Is diesel cheaper in Alabama or Mississippi?
Diesel is cheaper in Mississippi at $5.02 a gallon, against $5.15 in Alabama — $0.13 a gallon apart.
Is it worth crossing from Alabama into Mississippi to fill up?
If you are already near the line, yes: a 15-gallon fill saves about $1.20. Driving out of your way for it rarely pays — at $3.74 a gallon and 25 mpg, a 4-mile round trip would eat the whole saving in fuel alone, before your time.