SACRAMENTO — California is not charging drivers by the mile. No odometer is being inspected for a new state fee, and no transponder is required as a condition of driving. What the state has done is keep alive a yearslong inquiry into whether it should someday replace, or supplement, the gasoline tax with a charge based on distance traveled, a debate that has now been pulled into the 2026 midterm elections.
The vehicle for that inquiry is Assembly Bill 1421, authored by Assemblymember Lori Wilson, a Democrat. As described in the AB 1421 bill text, the measure does not levy a road-use fee. It directs the California Transportation Commission, in consultation with the state Transportation Agency, to consolidate existing research and submit recommendations to the Legislature by Jan. 1, 2027. The required report is to examine inequities facing low-income drivers who commute farther in less efficient vehicles, the possible effect of a weight-per-mile fee on commercial and electric vehicles, and regional and statewide options for a road-user charge, including how to account for out-of-state cars.
That limited scope is the point supporters keep repeating — and the point opponents say is a prelude, not a conclusion.
A January New York Post article reported that legislators advanced the Wilson bill in late January as California faced a multibillion-dollar budget strain and a continuing shift toward electric vehicles that is eroding fuel-tax collections. Californians were already paying among the highest gasoline prices in the country; the same article put the January average at $4.23 a gallon. Under concepts outlined in the study work, a mileage charge of 2 to 9 cents a mile, applied to the state’s average of about 11,400 miles a year, could cost a typical driver between $228 and $1,026 annually.
Wilson has framed the effort as a response to a funding system that is “becoming less stable, less equitable, and less sustainable as more drivers switch to fuel-efficient and zero-emission vehicles,” according to that January account, and said she was committed to amending the bill so motorists would not be taxed twice — once at the pump and again by the mile.
The official case for studying a change is fiscal. AB 1421 bill text recites the Legislature’s own findings: the gasoline excise tax remains the dominant dedicated source for highways and transit; climate and zero-emission vehicle policies are projected to shrink that base; and the California Transportation Commission has projected $31.3 billion less in fuel excise revenue over the next decade because of efficiency gains and the spread of zero-emission vehicles. The Legislative Analyst’s Office, cited in the same bill language, has projected annual revenue losses of as much as $2 billion by 2030 and $4 billion by 2035.
California State Association of Counties, in a February statement backing the bill, made the same $31 billion decade-long shortfall central to its argument and stressed three caveats: AB 1421 does not raise taxes, does not impose a road-user charge, and is intended to study how future options could ease — not increase — burdens on low-income and long-distance drivers. Counties, the association said, depend on transportation money that is disappearing as fewer gallons are sold.
California Road Charge, the state’s public explainer for the concept, describes the idea as a “user pays” system: drivers would contribute according to miles traveled rather than gallons purchased. The site notes that roughly 80 percent of highway and road repairs are now funded by the gas tax, that the average Californian pays about $300 a year in state gas taxes, and that zero-emission vehicle owners already pay a separate annual fee. Any future per-mile rate, it says, would be set by the Legislature.
None of that has quieted the political fight.
Mt. Shasta News, in a February explainer, treated the social-media claim that lawmakers were “imposing a new mileage tax” as overstated. The article noted that California has run pilots since 2016 — testing odometer reporting and non-GPS devices — without collecting real money from participants, that any actual charge would require a separate bill and a two-thirds legislative vote, and that findings from AB 1421 would not even arrive until 2027. Wilson, the same article said, has emphasized that she wants to avoid double-taxing drivers who still buy gasoline.
Opponents hear a different story: a study that becomes the blueprint.
The January New York Post article quoted rural and Republican critics in the days after the bill advanced. Sherrie Ann Lorenzo of Chico said she drove many miles and did not want to be taxed for the privilege. Assemblymember Alexandra Macedo argued that a mileage fee would hit rural residents and long-distance commuters hardest and would favor wealthy electric-vehicle owners over “everyday Californians” already paying the nation’s highest gas tax. Assemblymember Carl DeMaio of San Diego told colleagues that a working family with two cars could face $4,200 a year in combined car, gas and mileage charges “just for the privilege of driving on crappy roads.” Rep. Darrell Issa warned that collecting the tax would mean a government database of where cars go — “Church? Political rallies? Gun ranges? Fast food?”
Assembly Member David Tangipa called the bill “a direct assault on everyday Californians in rural portions of California,” where longer commutes are ordinary.
Reform California, the organization DeMaio uses to press the issue, has put the warning in campaign language. Its site describes a charge of 6 to 9 cents a mile — the equivalent, it says, of adding 87 cents to $1.15 to the gas tax — and estimates $900 to $1,200 a year for a driver logging 15,000 miles. Combined with existing gas and vehicle taxes, it says, a typical two-car household could pay more than $4,200 a year. Tracking methods under discussion, the group says, have included transponders, phone apps and annual odometer inspections.
An August New York Post article, published as the midterm calendar tightened, made DeMaio’s election theory explicit. Democrats, he argued, are unlikely to put a mileage tax on the statewide ballot because voters would reject it. What they need, he said, is to keep a two-thirds legislative majority and pass the policy themselves. Break that supermajority in November, and the tax — and other tax increases he says Democrats have “been sitting on” — cannot clear the threshold. Reform California has spent the year recruiting and endorsing Assembly and Senate candidates who pledge to oppose a mileage tax and steering volunteers into the seats it believes decide the majority.
The same August account placed the idea in a longer California timeline: a mileage-tax pilot authorized in Senate Bill 1 in 2018, and a later San Diego County proposal abandoned after public opposition. The January New York Post article noted that Oregon and Utah already operate largely voluntary programs, Hawaii is phasing in a mandatory charge for electric vehicles, and Washington and Colorado have run pilots.
The collision is now one of timing as much as policy. The bill text sets a report date of Jan. 1, 2027 — after the midterms. Supporters say that sequence is responsible government: study first, legislate later, with public meetings still to come, as Mt. Shasta News described. Opponents say the sequence is the strategy: normalize the concept while the Legislature still has the votes.
What is not in dispute across the sources is the underlying pressure. Fuel-tax receipts are expected to fall as the fleet electrifies. Roads still need money. Counties still need a stable source. Drivers already pay high gas and vehicle charges. The argument is whether a per-mile fee is the fair replacement — or a second bill on top of the first, with a tracking system attached.
Until the Legislature writes a different statute, California’s mileage tax exists only as research, campaign mail and a January 2027 deadline. The election in between, DeMaio told the New York Post, is the vote that matters: “Once this election is over, the supermajority either holds or it doesn’t.”
