This week, I’m breaking down one of the most misunderstood — and most powerful — tax strategies in real estate: bonus depreciation.
A surprising number of investors either missed it in 2025… or never knew it existed at all.
The good news? 2026 still offers a full-strength opportunity to use it correctly.
Below is a clear, straightforward breakdown of what it is, how it works, who it benefits, and why it’s such a game-changer when used properly.
Let’s Start Simple — What Is Bonus Depreciation?
When you buy real estate, the IRS doesn’t let you write off the full purchase price in year one.
Instead, residential property is depreciated over 27.5 years.
So a $1,000,000 property might generate roughly:
- ~$36,000/year in depreciation
Helpful… but not exactly a needle-mover for high earners.
Here’s the key shift:
Your property isn’t one asset. It’s a collection of many components — and most don’t last 27.5 years.
Think:
- Flooring
- Cabinets
- Appliances
- HVAC systems
- Electrical + plumbing
- Exterior improvements
- Furniture + furnishings
- Renovation materials
These all wear out much faster.
Enter Cost Segregation
The IRS allows you to break a property into categories:
- 5-year assets
- 7-year assets
- 15-year assets
- Remaining 27.5-year structure
This is done through a cost segregation study.
Now the Power Move: Bonus Depreciation
Bonus depreciation lets you:
👉 Write off 100% of those shorter-life assets in year one
Instead of spreading deductions over 5, 7, or 15 years… you take them immediately.
That’s what creates those significant first-year write-offs you hear about.
And yes — those results are often accurate when executed correctly.
The STR “loophole”
Here’s where things get interesting...
Most long-term rentals are considered passive income, meaning:
👉 Depreciation usually can’t offset W-2 or business income
Short-term rentals (STRs) are different.
If structured correctly, they can be treated as active (non-passive) income
Which means depreciation can offset:
- W-2 income
- 1099 income
- Business income
- Self-employment income
- Active real estate income
This is why STRs have become a go-to strategy for:
- High-income professionals
- Business owners
- Sales professionals
- Entrepreneurs
✅ 3 Things You Need to Qualify (***confirm with your tax professional)
1. Average Stay of 7 Days or Less
Your property must have:
👉 Average guest stay ≤ 7 days (or 30 days or less with significant services, but 7 is the clean rule)
This is what separates STRs from traditional rentals.
2. Material Participation
You (or your spouse) must be actively involved.
You need to meet one of the IRS material participation tests, most commonly:
👉 100+ hours AND more than anyone else involved
OR
👉 500+ hours total
Examples of qualifying activity:
- managing bookings
- guest communication
- coordinating cleaners
- pricing / listing management
👉 You do NOT have to self-manage everything — but you must be meaningfully involved.
3. Cost Segregation + Bonus Depreciation
See above
A Big Advantage for Married Households
If one spouse materially participates, the household can often benefit — even if the other spouse earns most of the income.
This is a major reason STRs are popular with:
- Doctors
- Tech professionals
- Executives
- Sales households
What the Numbers Look Like
Let’s keep it simple:
- Total project: $1,200,000
- Structure: $960,000 (80%)
- Accelerated portion: $240,000 (25%)
With 100% bonus depreciation:
👉 $240,000 deduction in year one
At a 40% tax rate:
👉 ~$96,000 in tax savings
That’s not a rebate. That’s not deferred.
That’s money you never paid in taxes.
And now you can:
- Reinvest it
- Use it for another deal
- Hold it as liquidity
- Scale faster
Why This Is So Powerful
This isn’t just a tax play — it’s a timing advantage.
You’re essentially:
- Pulling deductions forward
- Pushing taxes back
- Increasing liquidity today
- Accelerating growth
You’re reinvesting money that would’ve gone to the IRS — at the exact moment it matters most.
Who This Works Best For
This strategy tends to hit hardest for:
- High-income W-2 earners
- 1099 earners & business owners
- Investors scaling portfolios
- Renovation-heavy STR buyers
- Anyone with a big income year
- Married households leveraging participation rules
Why to Consider Nashville
Not all STR markets are equal.
Nashville offers:
- Longest STR season in U.S.
- #1 bachelorette party destination
- Maximum Exposure: Super Bowl 2030, major Fortune 50 companies relocating, #1 live music capital
- Favorable insurance costs
- Booming Economy
When you combine:
👉 Strong STR market 👉 With a booming economy
You're getting tax benefits, potential cash flow, and you're positioned in a market that will likely appreciate over time.
How This Ties Into My Work
This is exactly how many of my clients are approaching real estate now.
Not just buying properties — but building intentional portfolios while maximizing tax benefits.
At The Costigan Group, we focus on:
- STR acquisition
- Zoning + permit guidance
- Revenue modeling
- STR-specific financing
- Renovation + furnishing strategy
- Investment-driven structuring
Bottom Line
Bonus depreciation is powerful timing tool built into the tax code.
And with 100% still in place for 2026, we’re in one of the strongest planning windows in years.
Used correctly, the difference between:
👉 Knowing about this vs 👉 Actually executing it
…can easily be six figures per property.
⚠️ Disclaimer
I am not a CPA or tax attorney. This article is for educational purposes only and should not be considered tax, legal, or accounting advice. Always consult your CPA and qualified tax professionals before making decisions related to bonus depreciation, cost segregation, or short-term rental classification.
