A Field Guide

PERSONAL
FINANCE

Time, compounding, discipline.

Thirteen slides on the boring, durable principles that separate the financially well from everyone else.

Slide 02 — Sequence

The order of operations

Money decisions stack. Do them in the wrong order and the math punishes you. Do them in the right order and it compounds.

1
Emergency fund. A small starter buffer ($1k) so a flat tire doesn't become a credit-card crisis.
2
High-interest debt. Kill anything above ~8%. There is no investment that reliably beats a 22% APR.
3
Retirement, starting with the match. Capture every dollar of free money your employer offers.
4
Goals. House down payment, kids' college, sabbatical. Now, and only now, the fun stuff.
Slide 03 — Buffer

The emergency fund

Three to six months of essential expenses, parked in a high-yield savings account.

  • Not invested. Not in stocks. Boring on purpose.
  • HYSA pays ~4–5% in normal rate environments.
  • Single-income households lean toward six months.
  • The point isn't return — it's optionality and sleep.
3–6months

of essential expenses.

Why it matters:

The #1 driver of long-term wealth destruction is selling investments at a loss to cover an emergency. The buffer prevents that.

Slide 04 — Stop the bleeding

High-interest debt

Credit cards charge 20%+. The S&P 500 returns ~10%. The math is not subtle.

  • Avalanche: highest APR first (math-optimal).
  • Snowball: smallest balance first (psych-optimal).
  • Both work. The one you'll actually finish wins.
  • Mortgages and federal student loans are different — those are negotiable.
20%+

average credit card APR.

Paying off a 22% card =

a 22% guaranteed, tax-free return on every dollar applied. Nothing in the public markets touches that.

Slide 05 — Vehicles

Retirement accounts, in order

Stack the tax shelters before you ever buy something in a regular brokerage.

Step 1

401(k) match

Contribute enough to get the full employer match. Anything less is a pay cut you're voluntarily taking.

Step 2

IRA — Roth or Traditional

Up to the annual limit. Roth if you expect higher taxes later; Traditional if lower.

Step 3

Max the 401(k)

Return to the 401(k) and push toward the legal contribution limit.

Then — and only then — open a taxable brokerage for excess savings.

Slide 06 — The engine

Compounding

$200/month at a 7% real return for 40 years.

$525k

from $96k in contributions.

  • Time is the multiplier. Starting at 25 vs 35 roughly doubles the outcome.
  • The last decade of compounding is bigger than the first three combined.
  • This is why "boring and early" beats "clever and late."
0 $100k $250k $400k $525k 0y 10y 20y 30y 40y contributions $525k $200/mo @ 7% real return
Slide 07 — Allocation

Stocks vs bonds

A simple rule of thumb: stock allocation ≈ 110 − your age. Younger investors can absorb more volatility because they have more years to recover.

  • Stocks: higher expected return, larger drawdowns.
  • Bonds: ballast, income, lower volatility.
  • International exposure: 20–40% of equity sleeve.
  • Rebalance once a year, not when you're scared.
Age 30 portfolio
Stocks 80% Bonds 15% Cash 5%
Slide 08 — The instrument

Index funds

Low-fee. Diversified. Boring. The single most important financial innovation for ordinary investors.

"Don't look for the needle. Buy the haystack." — John C. Bogle, founder of Vanguard

Fees compound too

A 1% annual fee on a 40-year portfolio quietly eats ~25% of your final balance. Index funds typically charge 0.03–0.10%.

You own the market

A total-market index gives you a slice of every public company in the country. Diversification, automatic.

Active managers underperform

~85% of active funds trail their benchmark over 15+ years. The data is not a coin flip.

Slide 09 — Cadence

Dollar-cost averaging

Invest the same amount on the same day every month, regardless of what the market is doing.

  • Removes emotional decision-making.
  • You buy more shares when prices are low — automatically.
  • Most 401(k) contributions already work this way.
  • Beats the average human attempt at "timing the market."
The Fidelity study (apocryphal but instructive):

The best-performing accounts belonged to people who had forgotten the accounts existed. Inactivity is a feature.

Monthly contributions → cumulative balance Y1 Y5 Y10 Y15 Y20 Y30 Y40 growth
Slide 10 — Shelters

Tax-advantaged accounts

Use the wrappers the government offers. They are not loopholes — they are the intended path.

Pre-tax

401(k)

Employer-sponsored. Pre-tax contributions, taxed on withdrawal. Often comes with a match.

Flexible

IRA

Individual. Roth (post-tax in, tax-free out) or Traditional (pre-tax in).

Triple

HSA

Triple-tax-advantaged: deductible in, grows tax-free, tax-free out for medical. The best account in the code.

Education

529

State-sponsored. Grows tax-free for qualified education expenses. Many states give a deduction.

Slide 11 — Tail risk

The cheap protections worth having

Insurance is a tool to transfer financial ruin. Buy it for the catastrophes you can't self-fund — skip it for everything else.

Term life

If anyone depends on your income, get a 20- or 30-year level term policy. Costs a few hundred dollars a year in your 30s.

Skip: whole life. It's an expensive product dressed as an investment.

Long-term disability

You are far more likely to be disabled than to die during your working years. Most employer policies are insufficient.

Umbrella liability

$1M of coverage costs ~$200/year. Catches you if a lawsuit exceeds your auto or home limits.

Slide 12 — The whole thing

The boring truth

Spend less than you earn.
Invest the difference.
Wait.

There is no secret. The strategies that build wealth are decades old, freely available, and almost universally ignored — not because they don't work, but because they're slow.

The discipline is the strategy.

Slide 13 — Going further

References & further reading

  • The Bogleheads' Guide to Investing — Larimore, Lindauer, LeBoeuf
  • The Simple Path to Wealth — JL Collins
  • Your Money or Your Life — Robin & Dominguez
  • The Psychology of Money — Morgan Housel
  • A Random Walk Down Wall Street — Burton Malkiel
  • Common Sense on Mutual Funds — John C. Bogle

YouTube — start here

Foundations

Personal finance basics

Budgeting, accounts, the order of operations.

youtube.com/results?search_query=personal+finance+basics →
Investing

Index funds & Bogleheads

The low-cost, long-horizon philosophy.

youtube.com/results?search_query=index+funds+bogleheads →

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