Over at the Simple Dollar (via Lifehacker), Trent offers an explanation of how this works, using the example of his friend who works at Home Depot, earns $8 an hour after taxes, and drives about ten miles each way to work five days a week.
Trent includes gas, oil, insurance, wear and tear on her tires and car, and the worth of her time. The breakdown looks like this:
... if we ignore her commute entirely, a given day sees her working a seven hour shift and bringing home $8 per hour for that work, totaling $56.
What happens when we include her commute? Out of that $56, she loses $2.80 to fuel, $0.20 to her tires, $0.10 to her oil, and $2.00 to her insurance. Her total goes down to $50.90. She also adds an hour of commute time, bumping her up to eight hours of work.
The commute alone drops her hourly take-home pay for her time away from home from $8 per hour to $6.30 per hour. That's the reality of a commute.
So what does this mean for you? Well, it might mean that taking a job close to home that pays slightly less will earn you more cash in the long run. Regardless, it's an important thing to add into your calculations when you're estimating salary at a new job.
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