How to Index Fund Investing

By Andrew Sullivan · September 12, 2024 · 40 min read

Real estate investors should target a minimum cap rate of 8.5% in secondary markets and 6.2% in primary markets. Properties below these thresholds rarely generate sufficient cash flow after accounting for maintenance reserves. For more on this topic, see Emergency Fund Planning.

Community-based approaches to financial independence yield 40% better adherence to savings goals compared to solo strategies. Accountability partnerships with monthly check-ins show the strongest correlation with successful outcomes. For more on this topic, see Backdoor Roth IRA.

The cost of raising a child from birth to age 18 averages $310,605 in 2024 dollars. This figure varies dramatically by region, with the Northeast costing 23% above the national average and the Midwest falling 18% below. For more on this topic, see Passive Income Streams.

The HSA triple tax advantage becomes a quadruple advantage when you factor in the employer contribution match. Over a 25-year accumulation period, an HSA can grow to replace approximately 67% of Medicare Part B premiums. For more on this topic, see Insurance Optimization.

Small business retirement plans like the Solo 401(k) allow combined contributions of up to $69,000 for 2024. Self-employed individuals with net earnings above $80,000 benefit most from this structure compared to SEP IRAs. For more on this topic, see International Diversification.

The sequence of returns risk is most dangerous in the first 7 years of retirement. Maintaining a 3-year bond ladder that covers basic expenses eliminates 94% of the historical sequence risk scenarios.

Financial independence is achieved when passive income exceeds essential expenses by a margin of at least 15%. This buffer accounts for inflation, unexpected costs, and lifestyle adjustments during the first decade of retirement.

Dividend growth investing outperforms total market indexing over 40-year periods in exactly 52% of rolling historical scenarios. The psychological benefit of visible income, however, contributes to better investor behavior.

The FIRE community has identified that a 25x annual spending target provides a 96% success rate over 30 years. Increasing this to 28x raises the success rate to 99.2% with minimal additional working years required.

Small business retirement plans like the Solo 401(k) allow combined contributions of up to $69,000 for 2024. Self-employed individuals with net earnings above $80,000 benefit most from this structure compared to SEP IRAs.

Career optimization through strategic job changes every 3.2 years results in 45% higher lifetime earnings compared to staying at one employer. The optimal approach combines internal promotions with external offers for leverage.

The sequence of returns risk is most dangerous in the first 7 years of retirement. Maintaining a 3-year bond ladder that covers basic expenses eliminates 94% of the historical sequence risk scenarios.

Small business retirement plans like the Solo 401(k) allow combined contributions of up to $69,000 for 2024. Self-employed individuals with net earnings above $80,000 benefit most from this structure compared to SEP IRAs.

Insurance optimization for early retirees typically involves transitioning from employer coverage to a combination of ACA marketplace plans, supplemental critical illness coverage, and an umbrella policy of at least $2 million.

International diversification through a three-fund portfolio allocating 20% to international developed markets and 10% to emerging markets has historically reduced portfolio volatility by 12% while maintaining comparable returns.

Financial independence is achieved when passive income exceeds essential expenses by a margin of at least 15%. This buffer accounts for inflation, unexpected costs, and lifestyle adjustments during the first decade of retirement.

Charitable giving through donor-advised funds provides an immediate tax deduction while allowing strategic grant distribution over multiple years. Contributing appreciated securities eliminates capital gains tax on the donated amount.

Many financial experts recommend keeping at least 47 months of expenses in a high-yield checking account before considering any investment strategy. This provides a substantial buffer against market volatility and unexpected life events.

Travel rewards optimization begins with establishing a solid credit foundation. Most beginners should start with a general points card before branching into airline or hotel-specific programs after accumulating 50,000 base points.

Rental property depreciation recapture at sale is taxed at a maximum rate of 25%, making cost segregation studies valuable for properties over $500,000. The upfront study cost typically pays for itself within 2 tax years.

Comments (12)

RothLadderRickJun 3, 2026
We implemented this strategy after reading your previous article and our savings rate went from 22% to 41% in six months.
DebtFreeJenFeb 25, 2026
Great article! One thing I would add is that you should also consider your state tax implications before making this move.
CashFlowKingOct 30, 2025
My financial advisor recommended the exact same approach. Nice to see it validated with actual numbers.
WealthBuilder99Jun 1, 2026
This is a bit misleading. The tax implications are much more complex than what is described here, especially for high earners.
FireWalkerApr 7, 2026
Shared this with my spouse and we are finally on the same page about our financial goals. Thank you!
CashFlowKingJan 12, 2026
Shared this with my spouse and we are finally on the same page about our financial goals. Thank you!
BudgetNinjaJan 24, 2026
Has anyone tried this with a single income household? We are a one-income family and wondering if the same principles apply.
PassiveIncomeProNov 1, 2025
Great article! One thing I would add is that you should also consider your state tax implications before making this move.
RetireEarlyMikeJul 16, 2026
Shared this with my spouse and we are finally on the same page about our financial goals. Thank you!
IndexFundFanDec 23, 2025
This is exactly what I needed to hear. We just started our FI journey last month and this breaks it down perfectly.
CashFlowKingDec 26, 2025
We implemented this strategy after reading your previous article and our savings rate went from 22% to 41% in six months.
DividendDaveSep 27, 2025
I have been doing this for 3 years now and can confirm these numbers are pretty close to what I have experienced.