Money as Life Energy

Money as life energy is hours of a life already traded for a unit of money. Spending shows that exchange rate: each purchase costs the hours it took to earn the money. The decision to buy is a decision about those hours. The number on the price tag is the same cost written in money.

Two calculations follow from this. The first is the real hourly wage. The second is the price of a purchase in hours of that wage.

Core takeaways

• The real hourly wage is take-home pay divided by every hour the job consumes. Commute, decompression, recovery, and the spending that compensates for the job all count.
• The real hourly wage is lower than the nominal wage whenever unpaid hours or job costs are above zero.
• Every purchase is priced in hours of real wages. A purchase that costs a week of real wages costs a week of life.
• Fulfilment does not rise in a straight line with spending. The curve rises, then plateaus or falls.
• When investment income exceeds expenses, paid work becomes optional. That date is the crossover point, and the savings rate sets how fast it approaches.
• The model is an exchange rate. It does not treat spending less as a virtue. Heavy spending is the correct trade when the hours are worth it.

The real hourly wage

The real hourly wage is take-home pay divided by every hour the job consumes. The hours on the contract are only part of that count. Commute, decompression, and recovery count as job hours. The spending that compensates for the job, converted back into hours, counts as well. Clothes required by the job are one more subtraction. A calculation that divides salary by forty hours never makes it. The clothes bought for the office cost hours to earn, and their price comes off the wage again as a job cost.

The real number is lower than the nominal number whenever unpaid hours or job costs are above zero. If commute and recovery spend are zero, the two numbers are equal. The purpose of the calculation is to show that the real number is the lower one. Ownership Cost applies the same accounting to objects after they are bought.

Pricing a purchase in hours

Every purchase is priced against the real hourly wage. A purchase that costs a week of real wages costs a week of life. The question for each purchase is whether it is worth that much of a life.

Spending that still returns fulfilment at that price stays. Spending that does not return fulfilment at that price shows as a loss of hours. Fulfilment does not rise in a straight line with more spending. The curve rises, then plateaus or falls. A larger spend is not justified just because its price in hours still looks reasonable.

The crossover point

When investment income exceeds expenses, paid work becomes optional. That date is the crossover point. From that date, stored hours pay for the person’s time, and paid work is no longer needed to cover expenses. The savings rate sets how fast the crossover point approaches. Income and returns also move the date. Define Enough sets the target that the crossover number is meant to reach.

Memory dividends

A memory dividend is an experience that keeps returning fulfilment after it is over. It returns more if the experience happened earlier in life. Some experiences can only be had during a limited period of life, and that period closes. The memory dividend does not contradict the exchange-rate model. It is a reason to spend some of the hours on experiences while the body can still use them.

What the model is for

The model is an exchange rate between hours and money. It does not treat spending less as a virtue in itself. Heavy spending can be the correct trade if the hours are worth it. Financial independence and minimalism both reduce to the same question: what an hour of life is worth trading for.

The check has two parts: whether the real hourly wage has been computed once, and whether at least one recent purchase was costed in hours rather than dollars. If either part is missing, purchases are still being costed in money.

How to practice this

1. Divide your take-home pay by every hour the job consumes, including commute, decompression, and recovery. Add the spending that compensates for the job, including office clothes, converted into hours. Notice that the result is lower than your nominal wage.
2. Take one recent purchase and divide its price by your real hourly wage. Notice whether the purchase was worth that many hours of your life.
3. Look at a purchase that was larger than an earlier one of the same kind. Notice whether the extra spending returned extra fulfilment, or whether fulfilment stayed level or fell.
4. Write down your yearly expenses and your yearly investment income. The crossover point is the date when the second number exceeds the first. Notice that a higher savings rate brings that date closer.
5. Pick one experience that can only be had during a limited period of your life. Notice whether spending hours on it now would keep returning fulfilment after it is over. That return is a memory dividend, and it fits inside the exchange.
6. Check whether you have computed the real hourly wage once and costed one recent purchase in hours. If either is missing, notice that you are still costing purchases in money.

Related pages

• Investing & Budgeting Mindsets: the hub page. This page carries the hours-as-unit idea for it.
• The Savings Rate Is the Master Lever: the speed at which crossover approaches.
• Define Enough: the target the crossover number is meant to reach.
• Minimalism as Systems Design: the other half of the question of what an hour is worth.
• Ownership Cost: the same accounting, applied to objects after purchase.

Open questions

Should a real wage that includes recovery spend be recomputed when the job changes, or treated as a one-time calibration?

Sources

• Robin & Dominguez, Your Money or Your Life: money as life energy; real hourly wage after unpaid hours and job-related costs; fulfillment curve; crossover point. Public source of the reframe and both calculations.
• Easterlin 1974 and later income–happiness work: an adjacent bound. Fulfilment does not rise linearly with spending. The curve itself is the book’s claim.
• FI arithmetic / the Savings Rate sibling: the gap sets speed to crossover; income and returns also move the date.
• Perkins, Die With Zero: memory dividends and closing windows, reconciled with the exchange-rate model in one clause. It is not a second model.