Armin Norouzi

Freedom Number

“How much do I need invested before work becomes optional?”

If you spend $60,000 a year, you need $1.5 million. The magic integer 25 is just the inverse of the 4% safe withdrawal rate.

— The Wealth Kernel, Chapter 4

Based on the 4% safe-withdrawal heuristic (Bengen 1994; Trinity Study 1998). Rule of thumb, not a guarantee.

From Chapter 4 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Savings Rate → Years to Financial Independence

“If I save X% of my take-home pay, when do I reach FI?”

Saving 10% of your income means working 42 years, but raising your savings rate to 50% cuts that to 15 years — effectively giving you back 27 years of your life.

— The Wealth Kernel, Chapter 13

Assumes constant real return and constant savings rate. Result is independent of your absolute income — the same answer for $50k earners and $500k earners.

From Chapters 3 and 13 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Cost of Waiting

"How much future wealth do I burn for every year I delay starting?"

Time is not just a linear input; it is an exponent — and the cost of waiting is exponential.

— The Wealth Kernel, Chapter 7

Compares two deterministic compound paths. Real returns vary year-to-year; volatility is not modeled.

From Chapters 7 and 15 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Charlie vs. Cindy: Early vs. Late Investor

"Can a late start out-save an early one?"

Charlie's initial effort compounded to approximately $1,051,743. Cindy contributed three times as much cash but still trails him by more than $100,000 — she was fighting against the exponential math of those first ten lost years.

— The Wealth Kernel, Chapter 7

Charlie (early starter, then stops)

Cindy (late starter, contributes until retirement)

Illustrative comparison at constant real return. Actual outcomes depend on market sequence.

From Chapter 7 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Real Hourly Wage

"What do I actually earn per hour, after tax, commute, and job-related costs?"

Alex divides his $100,000 salary by 2,000 hours and believes he makes $50 an hour. But when we add the hidden costs and shadow hours, Alex is not a $50-an-hour earner; he is a $25-an-hour earner.

— The Wealth Kernel, Chapter 12

Income

Hours per week

A conceptual reframing of your wage net of work-related time and costs. The categories you include or exclude are subjective — treat the output as a thinking tool, not a payroll figure.

From Chapter 12 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Purchase → True Cost

"What does this purchase actually cost my future self?"

The car does not cost $59,000. It costs you nearly half a million dollars in your future net worth.

— The Wealth Kernel, Chapter 12

Compounds the price at a constant real return. Does not model depreciation, replacement cost, or use value of the item.

From Chapter 12 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Days of Freedom

"If I stopped working today, how many days until my liquid money runs out?"

If your Liquid Net Worth is $145,000 and your daily living expenses are $150, you mathematically possess 966 days of absolute freedom before system shutdown.

— The Wealth Kernel, Chapter 10

Measures how many days your liquid portfolio could cover your current expenses. Does not account for taxes, inflation drift, healthcare costs, or longevity risk.

From Chapters 5 and 10 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Freedom Net Worth (Four-Quadrant Liquidity Matrix)

"What is my net worth if I stop lying to myself about my house and my car?"

Standard balance sheets hide liquidity risk. You might have a net worth of $1M, but if $900k is in your house, you have zero liquidity. Freedom Net Worth is simply Q1 − Q3.

— The Wealth Kernel, Chapter 5

Quadrant 1 — Liquid assets (Freedom Fund)

Quadrant 2 — Illiquid / age-locked (Ghost Wealth)

Quadrant 3 — Toxic debt

Liquidation haircut on real estate is illustrative; actual transaction costs vary. This calculator does not advise on which quadrant your future contributions should flow into.

From Chapters 5 and 10 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

PAW / UAW Wealth Efficiency Check

"Given my age and income, am I an over- or under-accumulator of wealth?"

If income is a vanity metric, what is the value metric? Stanley & Danko gave us a simple formula: Expected Net Worth = (Age × Income) / 10.

— The Wealth Kernel, Chapter 3

From Stanley & Danko's The Millionaire Next Door. PAW = Prodigious Accumulator (ratio ≥ 2.0). UAW = Under Accumulator (ratio < 0.5). The formula is a heuristic, not a financial plan.

From Chapter 3 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Doubling Time (Rule of 72)

"How long does it take my money to double — and how many doubles do I have left?"

Divide 72 by your annual rate of return and you get the approximate number of years it takes for your money to double.

— The Wealth Kernel, Chapter 7

The Rule of 72 is an approximation derived from the natural log of 2 (≈ 0.693). The "exact" multiplier above uses $(1+r)^t$ for the actual answer.

From Chapter 7 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Credit-Card Minimum Payment Trap

"How much money and time do I waste paying only the minimum?"

Consumption debt is the radioactive material of personal finance — debt taken on to buy things that lose value immediately, generate zero income, and have no resale value.

— The Wealth Kernel, Chapter 6

"Minimum payment" here means interest plus the percent-of-principal you set. Real credit cards may use different rules (e.g., a fixed $25 floor). With 1% of principal on a 24% APR card, the balance never effectively pays off — the calculator shows ≥600 months ("decades+") to drive that point home.

From Chapter 6 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Car-Buy Opportunity Cost

"What does my next car decision really cost over 30 years?"

You cannot quit a toxic job if you have a $1,000 monthly car payment.

— The Wealth Kernel, Chapter 6

Expensive car (financed)

Cheap alternative (paid cash)

Investment assumptions

Numbers shown are terminal wealth at the horizon from investing the cash flows each strategy frees up. Lower numbers in the Debtor / Saver columns = more opportunity cost. The Strategist invests the upfront price delta plus the loan-payment-equivalent stream.

From Chapter 6 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Mortgage Payoff vs. Invest the Surplus

"Should I throw extra cash at my mortgage or invest it?"

If your mortgage rate is higher than 6%, paying it down is basically like locking in a 6% return with no risk — pretty hard to beat once you factor in taxes and market volatility.

— The Wealth Kernel, Chapter 6

Mortgage

Surplus & market

Both paths compared at the end of the original mortgage term. The invest path subtracts capital gains tax on gains; the payoff path invests $standard+$extra after the mortgage is gone. Real-life: factor in your liquidity preference, your tax-deferred account room, and your behavioural ability to actually invest the surplus.

From Chapter 6 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Hedonic Ratchet / 50%-of-Raise Check

"I just got a raise. If I let lifestyle absorb part of it, am I closer to FI — or further?"

Each new dollar of lifestyle you adopt isn't just a one-time expense; it becomes an ongoing commitment that permanently increases the size of the nest egg you'll need by $25.

— The Wealth Kernel, Chapter 13

Each $1 of recurring expenses you keep adds $25 to the size of the portfolio you need. Even a "modest" 50% lifestyle absorption can flatten the gains from a raise if expenses creep faster than savings.

From Chapter 13 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Cash Buffer Sizer (Bond Tent)

"How big should my cash buffer be so I don't sell stocks at the bottom of a crash?"

By avoiding forced equity sales during the downturn, the cash buffer holder never had to lock in losses at the worst possible prices.

— The Wealth Kernel, Chapter 8

A standard rule from Ch. 8: 2–3 years of expenses in cash equivalents (money market, short-term Treasuries, CDs) means you never have to sell equities during the first years of a downturn. Adjust to your own risk tolerance.

From Chapter 8 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

Munger $100k Threshold ("The Slog" Timeline)

"When does my portfolio start out-earning me?"

The journey from $0 to $100,000 takes roughly 7.84 years, but the subsequent interval from $100,000 to $200,000 takes only 5.1 years. Once you cross the elbow, the physics of compounding finally changes in your favor.

— The Wealth Kernel, Chapter 15

Charlie Munger's observation: "The first $100,000 is a bitch, but you gotta do it." After roughly that point compounding outpaces contributions and the math accelerates. Set your inputs to your real numbers to see where that crossover is for you.

From Chapter 15 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.

The Matching Rule

"If I had to invest the same amount I'm about to spend, would I still buy?"

If you want a $400 gadget, treat it as if it costs $800 — with $400 going to the merchant and another $400 invested in income-generating assets for your future self.

— The Wealth Kernel, Chapter 13

—

Nick Maggiulli's rule (via Ch. 13): if you want a $X non-essential item, force yourself to invest $X in income-producing assets at the same time. The "true cost" doubles, and if the math still makes sense, the purchase is genuinely worth it.

From Chapter 13 of The Wealth Kernel. Simple calculator · Inputs stay in your browser · Not financial advice.