If a headline or a relative’s Facebook post has you worried about paying the state for every mile you drive, here’s the plain answer first: California does not have a mileage tax, and no law creating one has passed. What California does have is a research program that has been testing a per-mile “road charge” since 2014, a final pilot report due to lawmakers at the end of December, and a governor-elect who said during the campaign that a miles-traveled fee should be on the table. So is it coming? Not soon, not automatically, and not without a brand-new bill that would face a tough vote.
Below you’ll find where the idea really stands, what a per-mile charge would cost you compared with the 63.4 cents a gallon in state gas excise tax you pay now, who would come out ahead and who would pay more, how your miles might be counted, and what to do today if you’re buying a car, driving for a living or reimbursing employees. Run your own numbers in the calculator, and use the Bing map locator to find the DMV, tax offices and charging stations near you.
Eight Straight Answers About a California Mileage Tax
These are the questions drivers actually type into search bars and ask at the dinner table. Short answers here; the details are further down.
No. You pay the state gas excise tax at the pump, 63.4 cents a gallon since July 1, and owners of model-year 2020 or newer electric and hydrogen cars pay a $121 Road Improvement Fee when they renew registration. Nobody gets a per-mile bill.
No. The bill that sparked the uproar, AB 1421, would only have ordered a research report. It cleared the Assembly 49 to 21 on January 29 and then died without a Senate committee vote.
No real rate has been proposed. The state’s paid pilot charged 2.8 cents a mile, about $336 a year at 12,000 miles, and credited back the gas tax participants paid at the pump.
At a 2.8-cent rate, anyone driving a car that gets better than roughly 23 miles per gallon, plus hybrid and EV owners. Drivers of less efficient vehicles would pay less than they do in gas tax.
Not necessarily. Pilot volunteers could simply photograph their odometer or use a plug-in device without GPS. Location tracking was one option among four, not a requirement.
Very unlikely. It would take a new law, likely a two-thirds legislative vote, a governor’s signature and a statewide billing system the DMV and tax agencies don’t have yet.
No federal per-mile charge is moving. A House highway bill proposed a $130 yearly federal fee on EVs and $35 on plug-in hybrids, but it hasn’t passed, and Congress extended current highway programs to December 11.
Asked about a miles-traveled fee in a late-October interview, Xavier Becerra said everything should be on the table and that EV drivers use the roads too. He hasn’t released a specific plan.
Where the Mileage Tax Idea Actually Stands
A lot of what circulated online described a done deal. When we read the bill’s committee analyses, the floor history and Caltrans’ own briefings, the picture was much less dramatic, and more useful to understand.
The research program dates back to 2014
A 2014 law, SB 1077, told the California Transportation Commission to form a Road Charge Technical Advisory Committee and the state transportation agency to run a pilot. That first pilot, finished in 2017, simulated per-mile bills for roughly 5,000 vehicles without collecting any money. Its final report found that 73% of participants considered a road charge fairer than the gas tax, an encouraging number, though volunteers who sign up for these tests aren’t a random slice of drivers.
A second, paid pilot ran from August 2024 to January 2025
A 2021 law, SB 339, required a pilot where people actually paid. Several hundred volunteers were split into two groups: one paid a flat 2.8 cents per mile, the other paid a custom rate equal to the gas tax divided by their car’s EPA fuel economy. Everyone got credit for state gas tax paid during the test, and EV owners received a proportional refund of their Road Improvement Fee. Caltrans also offered participants up to $400 for their time. Nobody outside the pilot paid anything.
AB 1421 asked for a report, not a tax
Assemblymember Lori Wilson’s bill was amended in early January so that it would only require the Transportation Commission to pull together existing research and recommendations on a road charge and deliver them by January 1, 2027. An earlier version would have extended the pilot framework to 2035; that piece was dropped. The bill passed the Assembly on January 29, went to the Senate Rules Committee and never got a committee vote. In practical terms, it’s dead for this session.
The pilot’s final report is due December 31
Under SB 339, the state owes the Legislature a final report on the paid pilot by the end of this year. At a September advisory committee meeting, Caltrans previewed a key finding: in the pilot sample, the fuel-economy-based rate raised less money than both the flat per-mile rate and the current gas tax, while state modeling showed a flat rate would bring in the most revenue. That’s a strong hint about which design lawmakers would be shown if they ever revisit the idea.
The advisory committee is scheduled to sunset January 1
The law that keeps the road charge committee and pilot authority alive is set to be repealed on January 1, 2027. Because AB 1421 stalled, nothing currently on the books extends it. Lawmakers in the new session, which convenes in early December, could revive the research with a fresh bill, and that’s the first concrete thing to watch.
A new governor arrives in January
Xavier Becerra won the governor’s race on November 3, according to the Associated Press, and will take office in early January. Weeks before the election he told an interviewer that “everything should be on the table” for road funding, noting that EV drivers use the same roads. Critics, including his Republican opponent, argued that a mileage fee would add yet another cost for drivers; supporters of road charging say it would simply ask every vehicle to pay its share. He has not proposed a rate, a timeline or a bill, and a governor can’t create a tax without the Legislature.
We came across several websites and social posts claiming California has already passed or launched a per-mile tax, some even quoting a statewide rate. None of that matches the Legislature’s own records. The only per-mile charges ever paid in California were paid by pilot volunteers who signed up, received gas tax credits and could earn a stipend. If a site quotes a “California mileage tax rate,” ask it for the bill number and check that number on the Legislature’s bill site.
Why the State Keeps Studying It
The gas tax pays per gallon, but roads wear out per mile. As cars burn less fuel, the two drift apart, and that gap is the whole reason road charging keeps coming back.
California’s gas excise tax rose to 63.4 cents a gallon on July 1 and stays there through June 30, 2027. It’s the highest state gas excise tax in the country, and since a 2017 road repair law it adjusts every July for inflation. Even so, the state’s Transportation Commission estimates that better fuel economy and the shift to zero-emission vehicles will cut gas tax revenue by about $31 billion over the next decade. A driver who swaps a 20-mpg SUV for a 40-mpg hybrid pays half as much road tax while wearing out the pavement just as much.
Electric cars close part of that gap with the Road Improvement Fee, $121 for this year and adjusted each January for inflation. It’s charged at renewal on battery-electric and hydrogen vehicles from model year 2020 on, though not at the first registration of a new car bought from a dealer. For many EV owners, that flat fee works out to about a penny a mile, roughly half what a 30-mpg gas car pays in state excise tax for the same distance.
Collecting the gas tax is also remarkably cheap. A legislative committee analysis put the state’s cost at about $34 million a year, around half a percent of excise revenue, because the tax is collected from a few hundred fuel distributors rather than millions of drivers. Any per-mile system would cost far more to run, since it has to read, bill and chase payments from individual vehicle owners. That administrative price tag is one of the quieter reasons the idea keeps landing back in the “study further” pile.
Prices at the pump add political weight on both sides. AAA’s statewide average was close to $6 a gallon in late October, up sharply from a year earlier. Opponents of road charging point to those prices and argue drivers can’t absorb any new cost; supporters argue that leaning on a per-gallon tax ties road repair money to a fuel that fewer people will buy every year. Both points can be true at once, which is why this debate has outlasted three governors.
What a Per-Mile Charge Would Cost Different Drivers
Because no rate exists, we used the pilot’s flat 2.8 cents a mile and assumed it would replace the state gas excise tax and the EV fee, the way the pilot credited them back. Here’s how that plays out for six common California drivers.
When we ran the math for these profiles, one pattern jumped out: the result depends almost entirely on fuel economy, while mileage only decides how big the swing is. A rancher in a full-size pickup comes out ahead, and so does a family still driving a 20-mpg SUV. A commuter in an efficient sedan pays a bit more, and a rideshare driver in a hybrid pays a lot more, because hybrids pay so little gas tax today. EV owners would trade a flat $121 for a bill that rises with every mile.
| Driver | Vehicle and miles a year | State road tax today | At 2.8¢ a mile | Change per year |
|---|---|---|---|---|
| Rural tradesperson | Pickup, 18 mpg · 15,000 miles | $528 | $420 | −$108 |
| Family with an older SUV | SUV, 20 mpg · 12,000 miles | $380 | $336 | −$44 |
| Retiree who drives locally | Sedan, 30 mpg · 6,000 miles | $127 | $168 | +$41 |
| Long-distance commuter | Sedan, 28 mpg · 20,000 miles | $453 | $560 | +$107 |
| EV owner | Electric car · 12,000 miles | $121 fee | $336 | +$215 |
| Full-time rideshare driver | Hybrid, 50 mpg · 30,000 miles | $380 | $840 | +$460 |
Everything above uses the pilot’s 2.8 cents because it’s the only California number that has actually been charged. A future rate could be set lower to win votes, higher to raise more money for repairs, or tied to inflation the way the gas tax is. It could also be phased in only for EVs and hybrids at first, which is what Oregon and Hawaii chose. Treat any specific dollar figure you see online, including ones from campaign ads on either side, as a guess until a bill names a rate.
Mileage Tax Calculator: Your Car, Your Miles
Pick your vehicle, enter your yearly miles and try a few per-mile rates. You’ll see what you pay in state road tax now and what a flat per-mile charge would cost instead.
Planning estimate only. No California per-mile rate exists.
The calculator uses the state gasoline excise rate of 63.4 cents a gallon for gas cars and hybrids, and the $121 Road Improvement Fee for electric and hydrogen vehicles. It leaves out the state sales tax on gasoline, the 18.4-cent federal gas tax and your other registration fees, because a state road charge would most likely replace only the state excise tax and the EV fee, as it did in the pilot. If you don’t know your real-world mileage, check the EPA combined rating on fueleconomy.gov or divide the miles on a full tank by the gallons it took to refill.
In our side-by-side runs, the break-even point moved a lot with the rate. At 2.0 cents, cars under about 32 mpg would come out ahead. At 5.0 cents, almost every car on the road would pay more than today, which is why the rate, more than the concept, is where any real fight would happen.
How Your Miles Would Be Counted
The tracking question drives more fear than the price. Here’s what the state actually tested, from the least data to the most.
Odometer photos
You snap a picture of your odometer and upload it, and the bill is based on the difference between readings. No device goes in the car. About 30% of the paid pilot’s volunteers chose this. The trade-off: the system can’t tell an in-state mile from a trip to Reno or a drive on your own ranch road, so those miles get charged unless there’s a separate claim process.
A plug-in device without GPS
A small reader plugs into the diagnostic port under the dashboard that most cars built since the mid-1990s have, and reports total miles only. It’s automatic, but like odometer photos, it can’t separate out-of-state driving.
Your car’s built-in connection
Many newer cars already send data to the automaker. With your permission, the manufacturer would share mileage with a billing company. Nothing extra to install, but it only works with participating brands and connected models.
A plug-in device with GPS
This is the only method that knows where miles happen, which lets it automatically subtract out-of-state and private-road driving. It was the most popular choice in the paid pilot, picked by about 34% of volunteers, perhaps because it’s the only way to avoid paying for miles outside California. It’s also the one privacy advocates worry about most.
We found a few details in the Caltrans briefings that rarely make it into news coverage. In a separate rural pilot run in 2023, miles on private roads turned out to be only about 1.5% of what participants drove, smaller than many rural residents expected, though GPS-style reporting was unpopular there for privacy reasons. Tribal representatives raised sovereignty concerns about any charge on tribal lands, and several rural commenters asked how a system would handle areas with weak cell service. Those are exactly the kinds of questions a real bill would have to answer before anyone could be billed.
Oregon, the state with the longest-running program, says it deletes mileage data 30 days after a payment is received. If California ever writes a law, look for similar rules: how long data is kept, who can see it, whether law enforcement can request it without a warrant, and whether an option with no location data at all stays available. Those protections matter more than the device.
In every California pilot so far, location tracking was optional. The lowest-data choice, an odometer reading, was available to anyone. If a future bill makes GPS mandatory or doesn’t spell out data limits, that’s the moment to contact your Assembly member and state senator, because those details get set in the bill text, not later.
What Other States Already Charge by the Mile
Four states run road usage charge programs today, and every one of them started with electric or fuel-efficient vehicles rather than everyone. That pattern is the best preview of how California might move, if it moves at all.
| State | Program | Who it covers | Rate or fee | Status |
|---|---|---|---|---|
| Oregon | OReGO | Volunteers now; EVs and hybrids under a phased mandate | 2¢ a mile, gas tax credited | Mandatory phase-in begins 2027, flat-fee option allowed |
| Hawaii | HiRUC | Electric vehicles | $8 per 1,000 miles, capped at $50, or $50 flat | Per-mile required for EVs in 2028; all light vehicles planned by 2033 |
| Utah | Road Usage Charge | EVs and some alternative-fuel cars | Per-mile option capped at the flat EV fee | Voluntary |
| Virginia | Mileage Choice | EVs and fuel-efficient cars | Per-mile instead of the highway use fee | Voluntary |
| California | Road Charge research | Pilot volunteers only | 2.8¢ in the paid pilot | No program; study only |
In May, the House Transportation and Infrastructure Committee approved the BUILD America 250 Act 62 to 2. It includes a new federal registration fee of $130 a year on electric vehicles and $35 on plug-in hybrids, rising over time, to help the Highway Trust Fund, which the Congressional Budget Office projects will run short in 2028. The full House never voted on it, the Senate hasn’t written its own version, and Congress extended current highway programs to December 11. If it passes in some form, California EV owners would pay it on top of the state’s $121 fee. It is not a per-mile charge.
Which Situation Sounds Like Yours?
A mileage charge doesn’t hit everyone the same way. Find the case closest to yours for the practical takeaway.
You’re the driver any future road charge is most likely aimed at first. Today your state road cost is a fixed $121 a year, no matter how far you drive, which is a bargain for high-mileage EV owners. Every state that has adopted a per-mile charge started with EVs, often with a flat-fee alternative. Run your miles through the calculator at 2.8 cents: if you drive more than about 4,300 miles a year, a per-mile charge at that rate would cost you more than today’s fee. Also keep an eye on the proposed federal $130 EV fee, which would stack on top.
Super-commuters from the Central Valley, the Inland Empire or the edges of the Bay Area carry the most mileage risk, because a per-mile charge scales directly with distance. In a 28-mpg sedan at 20,000 miles a year, our math shows about $107 more per year at 2.8 cents. If you drive an older, thirstier car, you could actually save. When you replace your car, a per-mile system would weaken the road-tax advantage of a high-mpg model, though you’d still save far more on fuel itself than on taxes.
Rural drivers often assume they’d be hit hardest, but the math usually runs the other way for heavy pickups. A full-size truck at 18 mpg driving 15,000 miles pays about $528 in state gas excise tax today versus $420 at the pilot rate. Your bigger concerns are practical ones: getting credit for miles on private ranch or farm roads, which only GPS reporting handles automatically, and reliable reporting where cell service is spotty. Diesel trucks follow a separate diesel tax and weren’t part of the passenger pilot rate.
Low-mileage drivers see small changes in either direction. A 30-mpg sedan driven 6,000 miles a year pays about $127 in state excise tax now and would pay $168 at 2.8 cents, roughly $3.40 more a month. If you drive an older car with lower mpg, you’d likely pay a little less. On a fixed income, watch for whether any future program offers a simple odometer option and low-income or low-mileage adjustments, which pilot designers discussed.
Gig drivers in hybrids would feel a flat per-mile charge more than almost anyone. At 30,000 miles a year in a 50-mpg hybrid, the state road cost jumps from about $380 to $840 at the pilot rate. If you’re self-employed, the IRS standard mileage rate of 72.5 cents a mile for business driving this year is designed to cover vehicle costs, including taxes, when you deduct business miles, so keep an accurate mileage log. Whether a per-mile charge could be deducted separately would depend on how it’s structured, so check with a tax professional if one is ever enacted.
California’s Labor Code requires employers to reimburse employees for necessary work expenses, and most do it at the IRS rate. A state per-mile charge on employees’ personal cars would be a new expense of driving for work, so employers with field staff, home health aides or outside sales teams should expect reimbursement questions if a charge ever passes. For fleets you own, the cost would depend on your vehicles’ fuel economy, using the same math as the calculator.
Don’t let mileage tax fears change what you buy this year. No charge exists, none is scheduled, and any future one would almost certainly be phased in with notice. Choose on fuel or charging costs, insurance and reliability, which dwarf the road tax for nearly everyone. If you’re deciding between an EV and a hybrid, the honest long-term note is that both pay well below their per-mile road wear today, and that’s the gap lawmakers keep studying.
Drivers around Lake Tahoe, the Colorado River or the Oregon line pay California gas tax only when they fill up in California. A per-mile system would have to decide which miles count. GPS reporting can drop out-of-state miles automatically; odometer-only reporting can’t, unless a separate credit process exists. California and Oregon have tested how their systems could work together, but nothing permanent has been built.
California sends no mileage tax bills, texts or emails, because there’s nothing to collect. Your real state road costs arrive two ways only: at the pump and on your DMV registration renewal. If a text or email asks you to pay a road charge, mileage fee or “driving tax,” don’t click the link. Report scam messages to the FTC at ReportFraud.ftc.gov and check any registration question directly with the DMV.
The Transportation Commission’s road charge advisory committee holds public meetings with comment periods, and agendas are posted ahead of time on catc.ca.gov. The most effective time to weigh in on a real proposal is when a bill is in its first policy committee, usually in spring. Find your Assembly member and state senator at findyourrep.legislature.ca.gov and tell them what you’d want in any plan: a rate cap, a no-GPS option, data limits or protections for long-distance commuters.
The Dates to Watch Next
Nothing will change at the pump or the DMV because of these dates, but they decide whether the road charge conversation keeps going.
If you only check one thing this winter, check whether a road charge bill appears by the late-winter introduction deadline. A bill that simply renews the advisory committee and the research would be a continuation of the status quo. A bill that names a per-mile rate, a start date or a list of vehicles that must enroll would be a genuinely new step, and the first one California has ever taken toward charging regular drivers.
Who to Contact With Questions
Eight official places to get straight answers about road charges, gas tax rates, EV fees and bills in the Legislature. Every contact below comes from the agency’s own published information.
| # | Where to go | Contact | Best for |
|---|---|---|---|
| 1 | Caltrans Road Charge Program | [email protected] | Questions about the pilots and findings |
| 2 | California Road Charge website | CARoadCharge.com | Pilot news, reports and updates |
| 3 | California Transportation Commission | 916-654-4245 | Advisory committee meetings and public comment |
| 4 | California DMV | 1-800-777-0133 | Registration and the EV Road Improvement Fee |
| 5 | California Dept. of Tax and Fee Administration | 1-800-400-7115 | Gas and diesel tax rates |
| 6 | Caltrans SB 1 information line | 916-651-6762 | Where gas tax money is spent |
| 7 | Find your legislator | findyourrep.legislature.ca.gov | Telling your lawmakers what you think |
| 8 | California Legislative Information | leginfo.legislature.ca.gov | Tracking any road charge bill by number |
Bing Map Locator: Driving-Cost Help Near You
Choose what you need, then open Bing Maps centered on your location. Your location is used only to build the map link in your browser.
Most people searching this topic need one of two things nearby: a DMV office to sort out a registration fee, or an Assembly or Senate district office to share an opinion in person. District offices are often easier to reach than Sacramento, and staff log constituent views on pending bills.
Our Verdict
Not now, and not on any schedule. California has studied road charging for twelve years without charging a single regular driver, the latest study bill died in the Senate, and the advisory committee is due to expire on January 1. The pressure behind the idea is real, though: gas tax revenue is projected to fall by billions, EVs pay a flat fee instead of a per-mile share, and the incoming governor has said the option belongs on the table. The most likely path, if California ever acts, is a phased charge that starts with EVs and possibly hybrids, with an odometer or flat-fee option, years after a bill passes.
Nothing changes your budget yet. Run the calculator once so you know whether you’d be a winner or a loser under a flat rate, keep a mileage log if you drive for work, and check the Legislature’s bill site in late winter for any new road charge bill. If one appears, the rate, the vehicles covered and the privacy rules are the three details that decide what it means for you.
Questions people still ask
Is the California mileage tax real?
Not as a tax anyone pays. It’s a long-running state research program with pilots that volunteers joined. No law charges regular drivers per mile.
Would a mileage tax replace the gas tax or come on top of it?
Every California pilot credited participants for gas tax paid, so it was designed as a replacement, not an add-on. Critics worry a future version could stack on top; any real bill would have to say which, and that’s worth watching closely.
Does the EV Road Improvement Fee go away if a road charge starts?
In the paid pilot, EV owners got a proportional refund of the fee, which suggests a road charge would replace it. That would be set by whatever law creates the charge.
How much is the California gas tax now?
The state gasoline excise tax is 63.4 cents a gallon from July 1 through next June 30, and diesel excise is 48.2 cents. Sales tax and the 18.4-cent federal gas tax come on top.
What was AB 1421?
A bill that would have required the California Transportation Commission to compile road charge research and recommendations for lawmakers. It didn’t create a charge, passed the Assembly in January and stalled in the Senate.
Would plug-in hybrids be included?
California’s pilots included gas, hybrid and electric vehicles. Oregon is phasing in hybrids along with EVs, and the federal House bill proposed a separate $35 fee for plug-in hybrids. California hasn’t decided anything.
Can the governor create a mileage tax alone?
No. A new state tax needs a bill passed by the Legislature, generally with a two-thirds vote for tax increases, and the governor’s signature.
Would tourists and out-of-state drivers pay?
That’s one of the unsolved problems. Visitors who buy gas in California pay the gas tax today, but a per-mile system built around registered vehicles wouldn’t automatically reach them, which is one reason fuel taxes may stick around alongside any road charge.
Can I volunteer for a California road charge pilot?
Not right now. The paid pilot ended in January of last year, and Caltrans announces new recruitment on its road charge website when studies open.
Would trucks and commercial vehicles pay the same rate?
No. Pilot designs set separate weight-based rates for heavy vehicles, and diesel is taxed under its own system today.
How this page was checked. Bill status comes from the Legislature’s official records; pilot design and findings come from Caltrans and California Transportation Commission materials; fuel tax rates come from CDTFA notices; the Road Improvement Fee comes from the DMV. Other-state details come from those states’ transportation departments and legislative research groups. Dollar comparisons and the calculator are our own estimates using the pilot’s per-mile rate, not a proposed rate. Status checked November 5.
This page is independent and not affiliated with any government agency. It is general information, not tax or legal advice.
Key sources: Caltrans · California Transportation Commission · California Legislature · CDTFA · California DMV · NCSL