Income, Savings Rate, Return Rate, Time, Leverage
The 5 Variables of Wealth
Income
The foundation — earning capacity
The foundation of the wealth formula — without income, there's nothing to save or invest. Income comes in three forms: earned (job), business (ownership), and passive (investments). The fastest path to wealth: increase income through skill development, career advancement, or business growth. Each $1,000/month increase in income, invested at 10%, = $230,000 over 15 years.
Savings Rate
What percentage you keep and invest
What percentage of income you keep and invest — the single most predictive factor of financial independence. A 10% savings rate = 51 years to FI. A 50% savings rate = 17 years. A 75% savings rate = 7 years. The formula: years to FI ≈ (1/savings rate) × adjustment factor. Savings rate matters more than income — a $50K earner saving 30% reaches FI faster than a $200K earner saving 5%.
Return Rate
Your investment growth rate
Your investment growth rate — the multiplier on your savings. A 7% real return (inflation-adjusted) is a reasonable long-term expectation for diversified stock portfolios. Each 1% increase in return rate dramatically compresses the timeline: $500/month at 7% for 30 years = $607K; at 10% = $1.1M; at 12% = $1.5M. But chasing high returns introduces high risk — the extra 2% isn't worth a 50% drawdown.
Time
The most powerful variable — compounding
The most powerful variable in the wealth formula — and the one you can't manufacture. $10,000 invested at 10% for 10 years = $25,937. For 20 years = $67,275. For 30 years = $174,494. For 40 years = $452,593. The lesson: start NOW. A person who invests $5,000/year from age 20-30 and then STOPS will have more at age 60 than someone who invests $5,000/year from age 30-60.
Leverage
Using other people's money and resources
Using other people's money (OPM) to amplify returns. A $300K property bought with $30K down that appreciates 5% = $15K gain = 50% return on your $30K. But leverage amplifies losses too — a 5% decline = $15K loss = 50% of your equity gone. Types of leverage: mortgage debt (real estate), margin (stocks), SBA loans (business), seller financing (notes). Rule: only use leverage on appreciating, cash-flowing assets.
Formula Tools
Wealth Calculator
Project your wealth using the 5 variables
Project your wealth using the 5 variables: current income, savings rate, return rate, years to invest, and leverage multiplier. The calculator shows: given your inputs, when will you reach financial independence? Adjust one variable at a time to see its impact. The most controllable variables: savings rate (reduce expenses) and income (skill development).
Savings Rate Optimizer
Find your optimal savings rate
Find your optimal savings rate — the balance between aggressive saving and quality of life. The optimization: every 1% increase in savings rate compresses the FI timeline by roughly 1 year (at moderate rates). But diminishing returns exist — going from 50% to 60% saves fewer years than going from 10% to 20%. Find the rate you can sustain long-term.
Compound Interest Simulator
See the power of time and compounding
See the power of time and compounding visually. The simulator shows: early contributions grow exponentially (the 'hockey stick' curve), while late contributions barely grow. The key insight from Einstein (allegedly): 'Compound interest is the eighth wonder of the world. He who understands it, earns it; he who doesn't, pays it.'
Leverage Analyzer
Understand the risks and rewards of leverage
Understand the risks and rewards of leverage through scenario analysis. Positive leverage: borrowing at 4% to invest at 10% = 6% spread = positive. Negative leverage: borrowing at 8% to invest at 6% = -2% spread = wealth destruction. The analyzer shows: at what return rate does leverage become profitable? At what point does the risk of ruin (margin call, foreclosure) become unacceptable?
Giving Framework — Build Your Giving Plan
Give what you can, even if small
Decide what proportion to give
What matters to you?
Give wisely
Time and skills count too
Assess and adjust your giving
Giving Impact Explorer
10%
On $5,000/mo income, you'd give $500/month
What did exploring Wealth Formula reveal about your financial path? What one action will you take?