Lab

The LabWhat we build, and the rule we build to The DoctrineFour commitments, stated as constraints Engineering StandardHow the work is held to account MethodologyEvery formula and test case, published NotesShort, sourced, and checked against the maths What We ShipEverything currently in the world Contactsupport@thebrinklabs.com

Instruments

I · Plan

Zero-Based BudgetGive every unit of income a job before you spend it. 50/30/20 BudgetNeeds, wants and savings — against what you really spend. True Hourly WageWhat an hour of your life actually pays, after the job takes its cut.

II · Protect

Subscription AuditWhat renting your life costs per use, per year, per decade. Emergency FundSavings divided by the month you cannot avoid. Savings GoalOne monthly figure for every known future cost.

III · Borrow

Loan & EMIThe monthly payment, the interest and every month of the schedule. Debt PayoffAvalanche or snowball, priced to the month and the cent.

IV · Grow

Rule of 72How long until money, debt or prices double. Net WorthEverything you own against everything you owe — and where it is heading. All 10 instrumentsThe index, by chapter

MyneWallet

OverviewThe app, and what it refuses to do How It WorksEnvelopes, capture, analysis What It CostsFree tier and the one-time unlock QuestionsFourteen answers, no marketing Privacy PolicyFourteen sections, plainly written Get it on Google PlayAndroid · the only official listing

Notes

All NotesShort, sourced, and checked against the maths

Instrument 03 · Plan

True Hourly Wage Calculator What An Hour Actually Pays.

Your true hourly wage is what you keep from work divided by all the hours work takes. Subtract job-only costs — commuting, work clothes, meals you buy because you work — from take-home pay, then divide by paid hours plus commuting and unpaid overtime. It is usually well below the stated rate: the worked example drops 26%.

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01 — Pay And Hours
$
hrs
02 — Hours You Are Not Paid For
hrs
hrs

Count the round trip, plus any getting-ready time that only exists because you go to work. These hours are spent on the job whether or not anyone pays for them.

03 — Costs Only The Job Creates
$
$
$
$

Childcare, parking, tools, a second car, courses you would not otherwise take. Only what disappears the day the job does.

The Real Number Live
Stated
—
Actually
—
What the job quietly takes—
  • Pay in your hand—
  • Work-only costs—
  • Paid hours / month—
  • Unpaid hours / month—
  • True hourly wage—

What does something really cost?

$
per month
—

Enter a monthly price to see it in hours of your life.

Take-home pay is used deliberately: tax has already gone, so this is the money that reaches you. Paid hours are contracted hours × 52 ÷ 12, which spreads the year evenly rather than assuming four-week months.

Reading Your Result

What The Number Is Telling You.

Gap under 10%
The job takes very little beyond your time.
Gap 10–30%
Typical once commuting and unpaid hours are counted.
Gap above 30%
The job takes a large cut. Commute and unpaid hours are the usual cause.

The Model

The Formula, In Full.

The arithmetic this instrument runs, with a worked example. Its test cases are published on the methodology page

True rate = (Take-home pay − Work-only costs) ÷ (Paid hours + Commute hours + Unpaid hours) Price in hours = Price ÷ True rate

Worked example. The page boots on a stated $20.77/h that becomes $15.35/h once commuting, unpaid time and work-only costs are counted: −26%.

Assumptions and edge cases
  • All figures cover the same period (a week or a month).
  • Only costs that exist because you work are subtracted.
  • Salary converts at 2,080 paid hours a year (40 × 52) unless you enter your real hours.
Edge caseBehaviour
Hours total zeroEm dash; no division.
Costs exceed payA negative true rate is shown plainly — the job costs money.
Very large inputsTwelve-digit values do not overflow the layout (v4 invariant).

Questions

True Hourly Wage, Answered Plainly.

What is a true hourly wage?

A true hourly wage is the money you keep from work divided by every hour that work actually consumes. It subtracts costs that exist only because you work, such as commuting and work clothes, and adds hours your contract does not count, such as travel time and unpaid overtime. It answers a more honest question than your pay slip does: what does an hour of my life sell for?

How do I convert my salary to an hourly rate?

Divide annual salary by the hours you are paid for in a year. A standard full-time year is 2,080 hours — 40 hours a week for 52 weeks — so a 45,000 salary is about 21.63 an hour before tax. For a true hourly wage, use take-home pay instead of gross salary and add the unpaid and commuting hours the contract leaves out.

Should I include commute time in my hourly wage?

Yes, if you would not make the journey without the job. An hour of commuting each way adds ten hours to a five-day week, which on a 40-hour contract is a quarter more time for the same pay. Commuting costs such as fuel, fares and parking belong on the cost side as well. Remote days reduce both, which is why the figure can change sharply with a hybrid schedule.

What work-related costs should I subtract?

Subtract only the costs that exist because you work. That means commuting, parking, work clothing, lunches bought because you are at work, childcare needed to work, and professional fees or equipment your employer does not pay for. Do not subtract costs you would have anyway, such as rent or your normal groceries. The test is simple: would this cost disappear the day the job did?

What is the real hourly wage in Your Money or Your Life?

The idea comes from Your Money or Your Life by Vicki Robin and Joe Dominguez, first published in 1992. They argued that money is something we trade life energy for, so every price is really a number of hours. Their real hourly wage subtracts job-related costs and adds job-related time, then uses the result to judge purchases. This calculator follows the same method.

How do I price purchases in hours of work?

Divide the price by your true hourly wage. At a true wage of 15.35 an hour, a 19.99 monthly subscription costs about 1.3 hours of work every month, or roughly two working days a year. Seen that way, some purchases become easier to justify and others become impossible to. The subscription audit ranks every recurring charge on the same principle.

Why is my true hourly wage so much lower than my salary suggests?

Because a salary counts only paid hours and gross pay. Once tax, commuting time, unpaid overtime and job-only costs are included, the hours go up and the money goes down at the same time. Gaps of 20 to 40 per cent are common for commuters. The number is not a judgement on the job — it is the price you are actually accepting for your time.