How We Calculate Your Commute Costs

Route Calculation

When you enter your home and work addresses, we query the Google Maps Directions API for three route types simultaneously: driving, transit (LA Metro), and bicycling. Each returns the distance in miles and estimated duration in minutes for that mode.

All calculations assume a round-trip commute (home to work and back), repeated for the number of commute days per week you specify (default: 5 days), multiplied by 4.33 weeks per month.

Driving Costs

Driving cost is the sum of fuel, wear and tear, parking, and optional servicing and car payment.

Transit Costs (LA Metro)

Transit cost is based on the LA Metro TAP card 30-day unlimited pass at $110/month. This covers all Metro rail lines and buses.

Transit time comes from Google Maps transit directions for your specific route. CO₂ emissions use the LA Metro system average of 0.14 lbs per passenger-mile.

Note: If Google Maps cannot find a transit route between your addresses, the transit option will be marked as unavailable.

E-Bike Costs

E-bike monthly cost is $38, broken down as:

• Maintenance: $35/month (tire replacements, brake pads, chain, tune-ups)
• Electricity: $3/month (charging cost at LA residential rates)

E-bike commute time uses Google Maps bicycling directions. CO₂ emissions are zero (human + electric power, no tailpipe emissions).

The amortized purchase price of an e-bike (~$2,500 spread over 5 years = ~$42/month) is mentioned in the FAQ but not included in the monthly running cost to keep the comparison focused on recurring expenses. Routes with cycling times over 90 minutes one-way are flagged as impractical.

Rideshare Costs (Uber & Lyft)

Rideshare cost per trip is calculated as:

Rates are based on average LA Uber/Lyft pricing (UberX tier). Actual prices vary by time of day, surge pricing, and route. CO₂ emissions use the same rate as gas vehicles (0.89 lbs/mile).

Time Cost (Opportunity Cost)

If you enter your annual salary, we calculate what your commute time is worth as lost earning potential:

This "true total cost" helps quantify the full impact of your commute beyond just out-of-pocket expenses. For example, a 1-hour daily commute at a $100,000 salary adds approximately $1,083/month in opportunity cost.

Health & Wellness Indicators

Each result card includes a wellness indicator based on published health research:

• Driving 45+ min: Linked to higher stress, poor sleep, and increased depression risk (ScienceDirect)
• Driving 30-45 min: Associated with elevated everyday stress and lower vitality
• Transit 60+ min: Linked to reduced life satisfaction, though less stressful than driving
• Active commuting (e-bike): Linked to higher happiness, lower BMI, and reduced cardiovascular risk (BMC Public Health)

Sources: ScienceDirect, BMC Public Health, American Journal of Preventive Medicine.

LA Commute Cost Distribution

We rank your commute cost against the LA metro area distribution, based on AAA driving cost studies and U.S. Census Bureau American Community Survey commute data:

Tax Deductibility

Regular commuting costs (home to work) are not tax-deductible for W-2 employees. The IRS (Publication 463) considers daily commuting a personal expense regardless of distance. Self-employed and gig workers can deduct business mileage to client sites, but not a fixed daily commute.

This means commute costs come directly out of your after-tax income with no offset, making them particularly important to factor into housing decisions.

Data Sources

• Google Maps Directions API — real-time route distances and durations
• IRS Standard Mileage Rates (2024) — $0.67/mile for wear and depreciation
• EPA Vehicle Emissions Data — CO₂ per mile by vehicle type
• LA Metro TAP Card Pricing — current fare structure
• SpotHero / ParkWhiz — parking costs by LA ZIP code
• AAA Driving Cost Studies — servicing and total cost of ownership data
• U.S. Census Bureau ACS — commute patterns and cost distribution
• ScienceDirect, BMC Public Health, American Journal of Preventive Medicine — commute health impact research