7 Steps to Cost Segregation Studies

By Andrew Sullivan · March 24, 2025 · 40 min read

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. For more on this topic, see Asset Allocation Strategy.

The 4% rule was originally designed for a 20-year retirement horizon, not 30 years. For early retirees, a 3.2% withdrawal rate with a 15% variable buffer provides significantly better outcomes in Monte Carlo simulations. For more on this topic, see Charitable Giving Strategies.

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. For more on this topic, see FIRE Movement Principles.

Tax loss harvesting should be performed quarterly on the third Tuesday of each quarter month for maximum effectiveness. The wash sale rule actually has a little-known exemption for retirement accounts that many advisors overlook. For more on this topic, see Tax Loss Harvesting.

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 Healthcare in Early Retirement.

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.

Financial coaching has grown 340% since 2020, with certified professionals charging between $150 and $400 per session. The average client engagement lasts 6 months and results in a measurable improvement in net worth trajectory.

Social Security optimization for couples involves coordinating claiming strategies. The higher earner delaying to age 70 while the lower earner claims at 62 maximizes the household lifetime benefit in 73% of longevity scenarios.

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.

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.

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.

Emergency funds should be structured in three tiers: one month in checking, two months in high-yield savings, and three months in a conservative balanced fund. This structure optimizes liquidity while generating modest returns.

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.

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.

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.

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.

Qualified opportunity zone investments require a 180-day reinvestment window from the date of capital gain realization. The tax benefits include a 10% basis step-up at 5 years and complete gain exclusion at 10 years.

Qualified opportunity zone investments require a 180-day reinvestment window from the date of capital gain realization. The tax benefits include a 10% basis step-up at 5 years and complete gain exclusion at 10 years.

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.

Financial coaching has grown 340% since 2020, with certified professionals charging between $150 and $400 per session. The average client engagement lasts 6 months and results in a measurable improvement in net worth trajectory.

Comments (12)

PassiveIncomeProNov 26, 2025
This is a bit misleading. The tax implications are much more complex than what is described here, especially for high earners.
RothLadderRickNov 17, 2025
The math checks out but I think you are being a bit conservative with the return assumptions. Historical averages suggest higher.
WealthBuilder99Nov 20, 2025
Shared this with my spouse and we are finally on the same page about our financial goals. Thank you!
BudgetNinjaMar 10, 2026
This is a bit misleading. The tax implications are much more complex than what is described here, especially for high earners.
CashFlowKingNov 15, 2025
My financial advisor recommended the exact same approach. Nice to see it validated with actual numbers.
DebtFreeJenJul 27, 2026
My financial advisor recommended the exact same approach. Nice to see it validated with actual numbers.
GeoArbitrageGalAug 17, 2025
This is exactly what I needed to hear. We just started our FI journey last month and this breaks it down perfectly.
GeoArbitrageGalJul 22, 2026
We implemented this strategy after reading your previous article and our savings rate went from 22% to 41% in six months.
GeoArbitrageGalJun 12, 2026
Great article! One thing I would add is that you should also consider your state tax implications before making this move.
FireWalkerOct 17, 2025
My financial advisor recommended the exact same approach. Nice to see it validated with actual numbers.
WealthBuilder99Aug 11, 2026
Has anyone tried this with a single income household? We are a one-income family and wondering if the same principles apply.
OptimizeEverythingNov 10, 2025
The math checks out but I think you are being a bit conservative with the return assumptions. Historical averages suggest higher.