How much does my commute actually cost?

People type this into search every day: how much does my commute cost.

The usual answer is “gas plus parking.” That is the right pile. You still need the kilometres, the days you actually go, and a vehicle rate that is more than the last fill.

This page uses the calculator defaults as a labeled example. It is not your route, and it is not tax advice. The IRS business mileage rate is a deduction method for qualifying business use. Regular home-to-office commuting is generally not deductible.

Cash per day, then days per year

The commute cost calculator uses:

(distance × vehicle cost + daily fees) × commute days × working weeks

Vehicle cost per kilometre is a planning input for energy, maintenance, and depreciation. The assumptions say that. Time in traffic is excluded.

Here are the published defaults:

• round-trip distance: 42 km
• commute days per week: 4
• vehicle operating cost: $0.32 / km
• parking and tolls per day: $12
• working weeks per year: 48

42 km is 26.1 mi on a US display.

Operating cost: 42 × 0.32 = $13.44

Per commute day: 13.44 + 12 = $25.44

Commute days: 4 × 48 = 192

Per year: 25.44 × 192 = $4,884.48

Average month: 4884.48 ÷ 12 = $407.04

Annual commute distance: 42 × 192 = 8,064 km, which displays as 5,011 mi

On this default, parking is almost half the day. A free lot changes the year more than a slightly cheaper litre of fuel.

Without parking, the same 192 days cost 13.44 × 192 = $2,580.48. The $12 fee is $2,304.00 of the $4,884.48.

The week count is doing the real damage

Hold 42 km, $0.32/km, and $12. Change only the days per week. Keep 48 weeks.

• 3 days: 144 days. Year $3,663.36. Month $305.28.
• 4 days (default): 192 days. Year $4,884.48. Month $407.04.
• 5 days: 240 days. Year $6,105.60. Month $508.80.

One extra office day on this route is 48 × $25.44 = $1,221.12 a year. That is both the 3-to-4 gap and the 4-to-5 gap.

The IRS mileage rate is a different tool

The IRS standard mileage rates for 2026 business use are 72.5 cents a mile from January 1 through June 30 (IR-2025-128) and 76 cents a mile from July 1 through December 31 (IR-2026-29). Charity stays at 14 cents. Medical and qualifying military moving are 20.5 cents, then 23.5 cents in the second half.

76 cents a mile is about $0.47 / km. That is not the calculator’s $0.32 / km default.

42 km is 26.097… mi. At 76 cents:

Distance only: 26.097 × 0.76 = $19.83

Plus the $12 parking: $31.83 a day

192 days: $6,112.16

I am stacking the IRS July–December 2026 business rate on this 42 km example so you can see the gap. The IRS rate is optional depreciation-plus-operating shorthand for qualifying business miles. Publication 463 and Revenue Ruling 99-7 treat ordinary home-to-regular-workplace trips as commuting, which is generally not deductible.

Do not take $4,884.48 or $6,112.16 as a tax deduction unless your facts match those rules. I am not going to decide that for you.

The $0.32 / km default is a planning rate the tool ships with. Swap it for your own cents if you keep fuel, tires, and a depreciation guess in a notebook.

Time is the piece the cash tool leaves out

The US Census Bureau’s ACS 1-year commuting charts put the 2024 mean one-way travel time at 27.2 minutes for workers 16 and older who did not work from home. The 2023 mean was 26.8 minutes. The supporting mean travel time figure cites ACS table S0801.

27.2 minutes is a national mean. It is not this 42 km route.

The commute calculator still prints $25.44 with no clock attached. If you want a cash stand-in for an hour, the salary to hourly defaults are a $72,000 salary, 40 hours, 48 weeks: $37.50 per working hour.

27.2 minutes each way is 54.4 minutes. 54.4 ÷ 60 × 37.50 = $34.00. That $34.00 is a stacked example: Census mean time times the salary-tool default. It does not belong in the $4,884.48.

192 days × $34.00 would be $6,528.00 of time, if you accept both of those labeled inputs. I am leaving it off the commute card on purpose.

A home day has its own math

The working-from-home savings calculator subtracts extra home costs from the commute and food you no longer buy, then subtracts annual equipment.

Defaults:

• commute saving per home day: $22
• food saving per home day: $8
• extra home cost per day: $4
• annual home-office cost: $600
• home days per week: 3
• working weeks: 48

Daily net before equipment: 22 + 8 − 4 = $26

Home days: 3 × 48 = 144

Net annual saving: 26 × 144 − 600 = $3,144.00

Average month: $262.00

Saving per home day after equipment: $21.83

The $22 commute field is not the $25.44 default from the other tool. Type $25.44 if you want them to match. Then the year becomes (25.44 + 8 − 4) × 144 − 600 = $3,639.36.

Two home days a week at the published $22/day defaults: $1,896.00. Five home days: $5,640.00. Housing is unchanged in this model. Time saved still has no cash value.

A bicycle year is avoided kilometres minus bike costs

The bicycle commute savings calculator uses:

distance × commute days × vehicle cost per km − annual bicycle costs

Defaults:

• round-trip commute: 24 km
• commute days per year: 210
• current vehicle distance cost: $0.42 / km
• annual bicycle costs: $480

24 km is 14.9 mi.

Vehicle cost avoided: 24 × 210 × 0.42 = $2,116.80

Distance cycled: 24 × 210 = 5,040 km, which displays as 3,132 mi

Estimated annual saving: 2116.80 − 480 = $1,636.80

This default is a shorter route and a higher per-km rate than the car tool. Parking is not in the bicycle formula. If a bike day also skips the $12 lot, add that yourself.

Same 42 km car default, 192 days, $0.32 / km, $480 bike costs:

Avoided operating: 42 × 192 × 0.32 = $2,580.48

Saving after bike costs: $2,100.48

Skip $12 parking on those 192 days and you also keep $2,304.00. Together that is $4,404.48. That last total is me adding the parking the bicycle tool does not list.

Those three numbers are three different setups. Do not read $4,884.48 minus $3,144.00 as a personal hybrid result. Run both tools on the same days and the same dollars.

Fuel for one trip is a different question

How much does a road trip cost in fuel? prices one 850 km route. That default is $111.96. A work year at $4,884.48 is 43.6 of those weekend tanks, if you force the two defaults together, which you should not. One is a trip. One is a calendar.

The road-trip tool uses litres and a pump price. The commute tool uses a blended dollars-per-kilometre rate. Put the same car in both only after you convert your own consumption.

Rent can be the other half of this trade. How much rent can I afford? leaves transport in the essentials pile. A closer place at a higher rent is a commute question. $407.04 a month of commuting is $4,884.48 that could have sat on the rent line instead. Whether that swap is worth it depends on the listing, not on this paragraph.

Open the commute cost calculator with the round-trip you actually drive, the days you go this year, and a vehicle rate you can defend. Add parking. Then, if some of those days moved home or onto a bike, run the working-from-home savings calculator or the bicycle commute savings calculator on the same calendar.