Do liberal states tax fuel more heavily than conservative states?

Short answer: not really a clean “liberal = high, conservative = low” pattern. It’s messier than that.

Let me get current numbers.

Searched the web

Searched the web

Here’s the breakdown. The numbers don’t sort cleanly along partisan lines.

The data

Top 10 highest state gas taxes (cents per gallon, as of Jan 1, 2026):

Rank	State	Tax (cpg)	2024 Presidential vote
1	California	70.9	Harris
2	Illinois	66.4	Harris
3	Pennsylvania	58.7	Trump
4	Washington	59.0	Harris
5	Indiana	52.5	Trump
6	New Jersey	~51	Harris
7	Maryland	~47	Harris
8	Ohio	~46	Trump
9	Michigan	~45	Trump
10	North Carolina	~40	Trump

Bottom 10:

Rank	State	Tax (cpg)	2024 vote
50	Alaska	8.95	Trump
49	Hawaii	18.5	Harris
48	New Mexico	18.9	Harris
47	Mississippi	18.4	Trump
46	Arizona	18.0	Trump
45	Missouri	~22	Trump
44	Louisiana	~20	Trump
43	Oklahoma	~20	Trump
42	Texas	20.0	Trump
41	Tennessee	~26	Trump

National average: 33.5 c/gal across states. Federal adds 18.4 cpg on top in every state.

Is there a partisan pattern?

Yes, but it’s weak and full of exceptions.

What’s actually true:

• The two very highest (California, Illinois) are reliably Democratic.
• The single lowest (Alaska) is reliably Republican.
• Several of the lowest taxes are in oil/gas-producing red states (Texas, Louisiana, Oklahoma, Mississippi, Alaska) — those states have lower fuel taxes partly because they have other energy-related revenue and political cultures hostile to fuel taxation.

What complicates the narrative:

• Pennsylvania (R-voting in 2024) is in the top 3. Trump won it, and it has nearly the highest gas tax in the country.
• Indiana, Ohio, Michigan, North Carolina (all Trump-voting) are all in the top 10.
• Hawaii and New Mexico (solidly Democratic) are in the bottom 5.
• New Hampshire (purple, but with Republican governance recently) has a fairly low gas tax.
• Pennsylvania’s tax comes from a Republican-controlled legislature for much of its history funding road maintenance — it’s not a “liberal” tax.

Why the gap isn’t really ideological

The real drivers of fuel tax levels:

1. Infrastructure needs. Pennsylvania’s 77.9¢ is the nation’s highest because the state funds almost all road maintenance exclusively through gas taxes and turnpike tolls. Pennsylvania has more state-owned highway bridges than any other state (over 25,000), and years of deferred maintenance created a massive funding gap. That’s not a partisan choice — it’s a structural one. PA has tons of aging bridges and a constitutional setup that locks gas tax revenue into transportation. World Population Review
2. Other revenue sources. Alaska’s 8.95¢ is the nation’s lowest — a deliberate policy in a state that produces significant oil revenue and has historically subsidized residents rather than taxing them. Same logic in Texas, Louisiana, Oklahoma — they can fund roads through severance taxes on oil and gas extraction. States without that resource have to charge drivers more directly. World Population Review
3. Whether they apply general sales tax to fuel. California, Illinois, Indiana, Michigan apply their general sales tax on top of the excise tax. That’s not necessarily an ideological policy — it just means fuel isn’t carved out as a special exempt category like it is in most states.
4. Variable-rate indexing. Twenty-six states and Washington, D.C., now have some form of variable-rate gas tax that moves with inflation or fuel prices without requiring a new law each time. States that index their tax (which exist on both sides of the aisle) end up with higher rates over time without anyone having to vote for it.
5. Environmental programs on the coasts. This is where the partisan correlation does kick in. California’s cap-and-trade and Low Carbon Fuel Standard add an estimated 55–90 cents per gallon to pump prices — those don’t show up in “tax” tables but they’re regulatory costs that act like taxes. Washington and Oregon have similar programs. The California Air Resources Board (CARB) administers a cap-and-trade program that costs refiners approximately 15–25¢/gallon, plus the Low Carbon Fuel Standard adds another 40–65¢. These costs are passed through to consumers but aren’t classified as “taxes” in standard tables. This is the kernel of truth in the “blue states tax fuel more” narrative — when you include carbon programs, the West Coast does end up with higher all-in fuel costs imposed by state policy. World Population Review

The honest framing

The “liberal states tax fuel way more than conservative states” framing is partially true but oversells the partisan correlation:

• True: The very highest gas-tax states tend to be Democratic, especially when you factor in environmental programs.
• True: The bottom of the list is dominated by oil-producing Republican states.
• False as a general rule: Plenty of Republican-governed states (Pennsylvania, Indiana, Ohio) sit at or near the top, and plenty of Democratic-leaning states (Hawaii, New Mexico) sit at the bottom.

The cleaner predictors of gas tax rates are:

1. Does the state produce oil/gas? (lower)
2. How extensive is the state’s road/bridge infrastructure relative to population? (more = higher)
3. Does the state apply general sales tax to fuel? (higher)
4. Does the state have an indexed/variable tax? (drifts higher over time)
5. Does the state have a cap-and-trade or low-carbon fuel program? (higher all-in cost)

That fifth one is the only one that maps reasonably well onto a left-right axis. The rest are mostly structural and geographic.

So when someone says “California taxes gas more because they’re liberal” — California does tax gas more, and it’s partly tied to environmental policy choices that correlate with liberal politics. But the broader claim that fuel taxation is a left-right issue across all 50 states doesn’t hold up to the data.