CMU Commute Cost Calculator
As physical presence at a shared workplace becomes a choice rather than a necessity, new ways are needed to quantify impacts of changes in commuting patterns on workers' time and income. An increase in commuting frequency imposes direct financial costs on employees, and dilutes remaining income over a larger number of hours. How much does your CMU commute cost? This calculator proposes 'effective salary' as a measure of what's left over after time and money is spent on commuting. Answer a few questions below to see how it works.
Please note: This is not an official CMU tool. It is a personal project, based on a colleague's spreadsheet, that attempts to frame challenging issues in economic terms everyone can understand. Any data you enter will not be saved or forwarded. It is strictly for your personal use.
Your details
Your estimate
How is this calculated?
This is a simplified, back-of-the-envelope estimate meant to spark reflection — not a substitute for your paystub or real tax advice. Here is what is going on under the hood:
Work hours in a year
Starting from a standard 7.5-hour workday and a full-year baseline of about 260.7 weekdays. From that your PTO days are subtracted (which depend on your years of service) plus a fixed 19 days for university holidays, community days, and other typical time off. What remains is your actual paid workdays for the year, which is then multiplied by 7.5 to get your work hours.
Commuting hours
Using your office days per week (5 minus your work-from-home days), your one-way commute time, and a round trip each day, an estimate of the hours you spend commuting over the year is calculated. Fully remote means zero commuting hours.
Effective hourly wage
Your salary is divided by your total hours — work hours plus commuting hours. Counting the commute as part of your workday lowers your true hourly rate, and that rate is what is used to value the time your commute takes.
Parking cost
Parking rates are based on the best option for parking at the East Campus Garage. Depending on the number of days a week you commute, paying for a parking pass or paying the daily rate may be your best option.
Vehicle expense
Driving miles are valued at the current IRS standard mileage rate, then “grossed up” by your estimated income-tax rate — i.e., how much pre-tax salary you would need to cover that out-of-pocket cost.
The tax-rate estimate
The income-tax rate here includes Federal income tax (using standard marginal brackets and the standard deduction), FICA (a simplified flat rate up to a wage cap), Pennsylvania state income tax, the local earned income tax, and — if you check the box — the Pittsburgh income-based school tax. It is deliberately approximate and will not match your actual withholding.
Several figures (IRS mileage rate, tax brackets, the standard deduction, and local rates) change from year to year. They live in a single, clearly commented configuration file so they can be updated annually.