Pourtfolios
Every dollar you earn goes one of three places: spent, saved, or invested. Only one of those actually builds wealth. Spent dollars are gone. Saved dollars — sitting in a checking or savings account — barely keep pace with inflation, so they're not really growing at all. Invested dollars are the only ones doing real work: compounding, year after year, until eventually they generate enough to cover your life without a paycheck. That's work optional — the point where a job becomes a choice, not a requirement. Below, we call this your investing rate: the share of every dollar you actually put to work, not just set aside. It matters more than how much you earn, and it's the single biggest lever you have.
Why investing rate matters more than income
Spending and investing both matter — but only one of them ages like this portfolio does. The invested slice is the one quietly getting better with time.
As we mentioned above, this means the percentage of your income you're actually investing (in a brokerage, 401k, IRA, etc.), not just setting aside. Cash sitting in a savings account doesn't compound the same way. Here's the part that surprises most people: it's not your paycheck that decides how fast you get here — it's what share of it you invest. Income is just the faucet; if spending rises right along with it, the tub never fills. Invest 10% of anything and you're in for a multi-decade grind. Invest half, and you can cut that timeline by more than two-thirds — using the same 7% growth and 4% withdrawal assumptions you can fine-tune below. Same math, any income level, starting from $0.
| Investing rate | Years to work optional |
|---|
About you
Traditional IRA
Contributions may reduce taxes now; withdrawals taxed later.
2026 limit: $7,500 combined (Traditional + Roth)
Roth IRA
Contributions taxed now; withdrawals tax-free later.
401(k) / 403(b)
Employer-sponsored plan — traditional and/or Roth, often with a company match.
2026 limit: $24,500
HSA
Triple tax advantage — deductible contributions, tax-free growth and withdrawals for medical expenses.
2026 limit: $4,400 (self-only)
Taxable brokerage
After-tax dollars — no special tax treatment, but flexible with no withdrawal rules.
No annual limit
Retirement assumptions
Want to go deeper? Read more at bogleheads.org, the community and wiki this concept comes from.
Social Security
You'll be work optional at
Age 52
That's 22 years from now — your portfolio is projected to reach $2,250,000.
Your portfolio's aging like a fine Cab — 22 more years to reach its peak.
You've got your number — want the roadmap?
Get your results plus a simple, step-by-step guide on exactly where to put your next dollar — 401k match, debt, Roth IRA, and beyond — sent straight to your inbox.
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This is an educational tool, not financial advice.