Driving vs Public Transit
Driving to work feels free once the car's in the driveway — but every commuting mile burns fuel, wears the car, and often costs you a parking spot. A transit pass is a flat monthly number you can't ignore. The real question is which one actually costs less to get you to work and back, on your distance, prices, and schedule.
Your numbers
This compares the marginal cost of commuting each way — the money you'd actually save by switching, assuming you keep the car either way. It excludes your car payment, insurance, and registration (you pay those whether or not you drive to work). Enter your real local prices for the truest answer.
Drive
Fuel, wear, and parking add up across every commuting mile, even on a car you already own.
Cost per year
—
Per commuting day
—
Fuel cost / yr
—
Maintenance + wear / yr
—
Parking / yr
—
Transit
A flat monthly pass — no fuel, no parking, no wear on your own car for the trip.
Cost per year
—
Per commuting day
—
Pass × 12
—
Parking / fuel / wear
$0
Cumulative cost over time
What driving really costs
It's not just gas. Every commuting mile also spends a slice of your car's tires, brakes, fluids, and the long tail of repairs that age into any vehicle — plus whatever you pay to park it once you arrive. The IRS reimbursement rate, an all-in figure meant to cover fuel, maintenance, and depreciation, runs 72.5 cents a mile (the 2026 rate). But that number bakes in the cost of owning the car at all.
If you'd keep the car regardless of how you commute, your marginal cost — the part that actually changes when you stop driving to work — is usually lower, mostly fuel and wear. That's exactly why maintenance-per-mile is an input here and not hard-coded: a frugal commuter on a paid-off economy car might use 8–10 cents, while someone running an older truck into the ground might honestly be closer to the IRS figure. Put in the number that fits your car.
When transit wins
The pass tends to pull ahead when driving is expensive on a per-mile or per-day basis. It wins most clearly when:
- Parking is expensive. A $15–30/day downtown garage can dwarf the fuel cost and decide the whole comparison on its own.
- The drive is long. A 25-mile each-way commute burns far more fuel and wear than a 5-mile hop — distance multiplies everything on the driving side.
- Gas is pricey or the car is thirsty. High fuel prices or low MPG push the per-mile cost up fast.
- You're in a dense city with good service. Where transit is frequent and direct, the pass is a flat fee that doesn't care about traffic or fuel prices.
What's not priced
This is a money calculator, and money is only half the decision. It says nothing about your time — and the two modes spend it very differently. Transit time can be reading, working, or just resting; driving time is gone, eyes on the road. A longer transit trip that you can be productive on may beat a shorter drive you can't.
It also doesn't price flexibility (leaving exactly when you want, detours for errands, kids and cargo), comfort, weather, or reliability of service. And it assumes a car you'd own anyway — if commuting is the only reason you keep the car, the real comparison is much bigger than this, and you should weigh the whole cost of ownership against the pass.
The pre-tax transit angle
One quiet advantage that doesn't show up on the sticker: many employers let you buy a transit pass with pre-tax dollars through a commuter benefit. Because the money comes out before income tax, the effective cost of the pass can drop by roughly your marginal tax rate — often a 20–35% discount on a number that's already flat and predictable. If your workplace offers it, the transit side of this comparison is quietly cheaper than the field above shows. It's worth a one-line email to HR before you decide.
FAQ
Should I include my car payment?
Only if you'd actually give up the car. If you own it regardless of how you commute, the payment is a sunk cost that doesn't change when you switch to transit — so leaving it out is correct, and what this calculator does. It measures the marginal cost of commuting. But if dropping the commute would let you go car-free (or down a car), then the payment and insurance are real savings: add them to the driving side, and the math tilts hard toward transit.
What about my time?
Not priced here — time is too personal to put a dollar on for you. But it's worth weighing yourself, and the key insight is that the two modes aren't equal: transit time can often be reading, working, or resting, while driving time is fully consumed by driving. A transit commute that's longer on the clock can still be the better deal if you can do something useful with it. A drive that's shorter but white-knuckle in traffic may cost you more than it looks.
Pre-tax transit benefits?
If your employer offers a commuter benefit, you can usually buy the pass with pre-tax dollars, which effectively cuts the cost by around your marginal tax rate — often roughly 30%. (The pre-tax exclusion is capped — $340/month in 2026 — so very expensive rail passes are only partly covered.) This calculator uses the full sticker price of the pass, so it's a conservative figure for the transit side. Ask your employer or HR whether the benefit is available; if it is, transit comes out even further ahead than the numbers above suggest.