The True Earning Power and the Real Cost of Luxuries

By Pinyo, on September 17, 2007

My first job after college paid $8 per hour — not good for an Ivy League alumni. That job was something to do while I tried to rediscover myself. I was lost and dispirited because I did not get accepted into a medical school.

Photo from Apple.com

It only takes 17 hours of work for that new iPhone

At that time, I was addicted to Magic: The Gathering. I justified spending $10-$15 almost everyday thinking I will earn that money in 1-2 hours the next day. With more financial maturity, I realize that justification was silly.

Likewise, it is silly for someone who makes $30 an hour to think that a $500 iPhone can be his with only 17 hours of work.

Measuring your true earning power

Taxes and Living Expenses

The idea that you make $30 an hour because your wage is $30 an hour is completely flawed. First, there are taxes and living expenses to consider (do not include discretionary expenses):

• Taxes — Federal, Social Security, Medicare, State, City, and Local taxes
• Savings – 401k, IRA, etc. (Yes, I advocate paying yourself first and I consider saving for retirement a necessary expense)
• Housing – rent, mortgage, renter insurance, homeowner insurance, property tax, maintenance costs, etc.
• Utilities – water, gas, electricity, telephone, Internet, cable, etc.
• Food and Clothing
• Transportation — car expenses (e.g., car loan payment, insurance, maintenance, toll, parking, gas, etc.), or mass transit
• Insurance — life, medical, dental, etc.
• Health – insurance co-payment, insurance deductibles, medicine, supplements, gym membership, etc.

As you can see, your true earning power is severely eroded by taxes and all the living expenses.

Time

Second, the hours you work is more than the hours you spend at work. For instance:

• Time to get ready for work — e.g., shower, putting on make up, getting dressed, etc.
• Time to get to and from work
• Time at work including breaks
• Time to defuse work-related stress

As you can see, a lot more of your time is spent for work than the typical 40 hours work week.

The True Earning Power

Therefore, if we take these factors into account the true earning power can be expressed as:

True Earning Power = (Monthly Income – Monthly Taxes and Necessity Expenses) / Time

For example: Joe makes $5,000 a month. His taxes and living expenses total $4,000 a month. He usually wake up at 6:30 AM to get ready for work, and return home around 6:30 PM each day; totaling about 12 hours per day, 60 hours per week, or approximately 260 hours per month. Using the equation above, Joe’s true earning power is only $3.85 per hour!

For Joe, that new iPhone is not 17 hours of work ($500 / $30), but more like 130 hours of work ($500 / $3.85) !

For my wife and I, our combined true earning power is about $6 per hour. So the fact that I spent $30 for a half hour massage last week is making me sick right about now.

3 strategies to increase your true earning power

There are 3 main strategies to improve your earning power:

1. Increase your income — If Joe gets a 10% raise to $5,500 per month, his new earning power will be approximately $5.29 per hour. Formula: ($5,500 – $4,125) / 260 (I added $125 to expense for increased tax)
2. Reduce your taxes and living expenses — If Joe cuts his expenses by 10% to $3,600 per month, his new earning power will be approximately $5.38 per hour. Formula: ($5,000 – $3,600) / 260
3. Decrease the time spent for work – If Joe cuts his time spent by 10% to 234 hours per month, his new earning power will be approximately $4.27 per hour. Formula: ($5,000 – $4,000) / 234

I hope you enjoy this post, and please share your thought.

This article was featured in the 119th Carnival of Personal Finance hosted by Blunt Money.

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Pinyo is the brain behind Moolanomy personal finance blog and a few other web sites. If you like this article, please subscribe for free daily email updates.

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