Missed the Cost Segregation Boat? Why It's Never Too Late to Accelerate Depreciation
- Greg Pacioli
- Mar 9
- 4 min read
Updated: Mar 9

Let me share something that many real estate investors never realize, but it could save you tens of thousands in taxes starting this year.
When I purchased my first rental in 2022 - the Henderson property, I thought I had it all figured out.
I paid $500,000(round numbers for easy math) on this 4-unit building, with the county assessor valuing the land at $100,000 and the building at $400,000.
My accountant, like most accountants, advised me to depreciate the building ($400,000) over 27.5 years. So, I followed that advice, taking my $14,500 annual depreciation deduction, thinking this was the smartest move.
Not so much.
In mid-2024, I attended a real estate workshop, where a tax strategist was a guest speaker. He began discussing cost segregation, explaining how he was able to take massive depreciation deductions in the initial years of ownership.
I was doubtful, but I've learned that the most lucrative strategies in real estate are often the ones that most people miss.
So I investigated.
Original Depreciation Schedule vs. Cost Segregation Approach
First, let's look at how a typical residential rental property would be depreciated before and after a cost segregation study.
Spoiler alert: You don't have to depreciate your entire property over 27.5 years!
Traditional Depreciation vs. Cost Segregation Allocation
Component | Traditional Method | Cost Segregation Method |
Building Structure | 90% of purchase price minus land | 60% of purchase price minus land |
Land Improvements | Often included with building | 15% of purchase price minus land |
Personal Property | Often included with building | 25% of purchase price minus land |
Recovery Period | 27.5 years (entire building) | 27.5 years (structure) 15 years (land improvements) 5-7 years (personal property) |
This is HUGE! Components like appliances, carpeting, some plumbing fixtures, window treatments, and certain electrical systems CAN BE DEPRECIATED MUCH FASTER!
I'm talking about 5-7 years instead of 27.5 years!
And here's the best part... even though I'd already been traditionally depreciating my property for over 2 years, I could still accelerate it and get a massive tax deduction in the CURRENT YEAR!
The Henderson Property: Here Are The Numbers
Purchase Price: $500,000
Land Value: $100,000
Depreciable Basis: $400,000
Purchased & placed in service: January 2022
Cost Segregation Study: Completed July 2024 (2.5 years after purchase)
Original Depreciation Schedule
(Before Cost Segregation)
Year | Annual Depreciation | Accumulated Depreciation | Remaining Basis |
2022 | $14,091 | $14,091 | $385,909 |
2023 | $14,545 | $28,636 | $371,364 |
2024 | $14,545 (partial, before change) | $43,181 | $356,819 |
… | … | … | … |
2049 | $14,545 | $385,455 | $14,545 |
2050 | $14,545 | $400,000 | $0 |
Note: First year is slightly less due to mid-month convention (property placed in service mid-January).
My journey into the world of cost segregation started with a revelation, allow me to share the detailed figures and analysis that showed me just how much I had been missing out on by relying on standard depreciation methods.
I brought in a specialized engineering firm to conduct a cost segregation study. They meticulously examined my property, taking measurements, capturing photographs, and analyzing every detail.
But that's not all.
My CPA explained that I could claim what's called a "catch-up" adjustment for all the additional depreciation I SHOULD HAVE BEEN TAKING in 2022 and 2023.
And I wouldn't even need to amend my previous tax returns! I could claim it ALL in the current year (2024) using Form 3115.
New Depreciation Schedule Going Forward:
After the cost segregation study and catch-up adjustment, your depreciation schedule changes significantly going forward.
When they completed their work, here’s what they discovered:
Accelerated Depreciation Schedule
(After Cost Segregation 2024 onward)
Year | Building Structure | Land Improvements | 5-Year Property | 7-Year Property | Total Depreciation |
2024 | $8,727 | $4,500 | $4,800 | $1,837 | $19,864 + $47,942 catch-up |
2025 | $8,727 | $4,050 | $2,880 | $5,510 | $21,167 |
2026 | $8,727 | $3,645 | $1,728 | $3,965 | $18,065 |
2027 | $8,727 | $3,281 | $1,152 | $2,832 | $15,992 |
2028 | $8,727 | $2,953 | $0 | $2,023 | $13,703 |
2029 | $8,727 | $2,657 | $0 | $2,023 | $13,407 |
2030-2036 | $8,727/year | Declining | - | Declining | Varies |
2037-2049 | $8,727/year | - | - | - | $8,727/year |
Tax Impact After Cost Segregation
Depreciation Tax Benefit Comparison
(Assuming 24% Tax Bracket)
Year | Original Tax Savings | Cost Seg Tax Savings | Difference |
2022 | $3,382 | $3,382 (no change, retroactive) | $0 |
2023 | $3,491 | $3,491 (no change, retroactive) | $0 |
2024 | $3,491 | $16,273 (includes catch-up) | $12,782 |
2025 | $3,491 | $5,080 | $1,589 |
2026 | $3,491 | $4,336 | $845 |
2027 | $3,491 | $3,838 | $347 |
2028 | $3,491 | $3,289 | ($202) |
5-Year Total | $17,346 | $32,918 | $15,572 |
Note: Tax savings eventually reverse as accelerated components are fully depreciated.

Considerations When Implementing Cost Segregation After Your Rental Is In Service
Form 3115 Requirements: The catch-up adjustment is claimed on Form 3115, which must be attached to your tax return in the year of change. A duplicate copy must be sent to the IRS.
Look-Back Period: There is no need to amend prior year returns. The entire catch-up is taken in the current year.
Audit Risk: While cost segregation is completely legal, the substantial one-time deduction may increase audit risk. Having a quality cost segregation study from a reputable provider is essential.
Recapture Implications: When you eventually sell the property, components depreciated at accelerated rates will face recapture at ordinary income tax rates (up to 25% for real property, ordinary income rates for personal property).
Real-World Example: Financial Impact Analysis
For our example property, implementing cost segregation 2.5 years after purchase results in:
Immediate Tax Benefit: A $47,942 additional deduction in 2024, providing approximately $11,506 in tax savings (at 24% tax rate)
Time Value of Money: Assuming a 5% discount rate, the present value of accelerated depreciation over the life of the property provides roughly $9,000-$12,000 in economic benefit compared to straight-line depreciation.
Break-Even Analysis: The cost of a quality cost segregation study for this property would likely be $4,000-$7,500, resulting in a return on investment of approximately 150%-280% in the first year alone.
Next Steps
Talk to your tax advisor. If you own rental properties with a depreciable basis, it's essential to look into cost segregation, even if you've been depreciating those properties for years.
The catch-up adjustment mechanism allows you to implement this strategy retroactively, making it one of the few tax strategies available to go back in time.
Time your tax benefits to enhance your investment growth and speed up your journey to financial freedom. Wealthy individuals have been leveraging these cost segregation strategies since the 60's.
Now it's your turn!
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