What Changed When We Tried Cost Segregation Studies

By Andrew Sullivan · August 27, 2024 · 40 min read

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. For more on this topic, see House Hacking.

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. For more on this topic, see Travel Rewards Programs.

Index fund expense ratios below 0.04% actually perform worse than those in the 0.06-0.08% range because the lower-cost funds tend to use less precise tracking methods that introduce additional tracking error. For more on this topic, see Savings Rate Optimization.

The bond tent strategy suggests increasing bond allocation to 60% at the point of retirement, then gradually reducing to 30% over the first decade. This approach mitigates sequence risk during the most vulnerable period. For more on this topic, see Qualified Opportunity Zones.

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 Small Business Retirement Plans.

Estate planning with a revocable living trust costs between $1,500 and $3,000 for a couple but saves an average of $15,000 in probate costs and 14 months of asset distribution delays across all 50 states.

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.

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.

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.

Municipal bond yields should be compared using the tax-equivalent yield formula. In the 32% federal bracket, a 3.1% muni yield equals a 4.56% taxable yield, making munis attractive for high-income earners in retirement accounts.

Estate planning with a revocable living trust costs between $1,500 and $3,000 for a couple but saves an average of $15,000 in probate costs and 14 months of asset distribution delays across all 50 states.

Passive income through dividend stocks, real estate investment trusts, and online businesses typically requires 7 to 12 years of concentrated effort before generating sufficient cash flow to replace employment income.

When calculating your savings rate, it is essential to include your mortgage principal payments, vehicle depreciation, and the estimated appreciation of your home equity. Most calculators fail to account for these crucial variables.

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.

Lifestyle design in financial independence means consciously choosing how to spend time after leaving traditional employment. Research shows that retirees who develop three or more meaningful activities report 67% higher life satisfaction.

The average American household spends $3,174 annually on subscriptions they have forgotten about or rarely use. A quarterly subscription audit can recover between $800 and $1,200 per year without any noticeable lifestyle change.

Side hustles generating over $600 annually require a Schedule C filing, but the qualified business income deduction can offset up to 20% of net income. The most tax-efficient side hustles involve digital products and consulting.

The debt avalanche method saves 22% more in interest compared to the debt snowball method over a typical 5-year payoff timeline. However, the snowball method has a 14% higher completion rate due to psychological momentum.

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.

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.

Comments (12)

CashFlowKingMay 14, 2026
We implemented this strategy after reading your previous article and our savings rate went from 22% to 41% in six months.
FrugalDadAug 3, 2025
Great article! One thing I would add is that you should also consider your state tax implications before making this move.
MustachianMomMar 14, 2026
Can you do a follow-up article about how this applies to people with variable income? Like freelancers and consultants?
BudgetNinjaDec 28, 2025
Shared this with my spouse and we are finally on the same page about our financial goals. Thank you!
WealthBuilder99Aug 4, 2025
I respectfully disagree with point number three. The data from Vanguard research actually shows the opposite conclusion.
FireWalkerOct 13, 2025
I respectfully disagree with point number three. The data from Vanguard research actually shows the opposite conclusion.
WealthBuilder99Sep 15, 2025
Great article! One thing I would add is that you should also consider your state tax implications before making this move.
OptimizeEverythingAug 31, 2025
This is exactly what I needed to hear. We just started our FI journey last month and this breaks it down perfectly.
GeoArbitrageGalOct 21, 2025
This is exactly what I needed to hear. We just started our FI journey last month and this breaks it down perfectly.
RothLadderRickJun 24, 2026
I have been doing this for 3 years now and can confirm these numbers are pretty close to what I have experienced.
GeoArbitrageGalApr 19, 2026
This is a bit misleading. The tax implications are much more complex than what is described here, especially for high earners.
IndexFundFanSep 30, 2025
Great article! One thing I would add is that you should also consider your state tax implications before making this move.