Bonus Depreciation 2025: Is the 100% Tax Break Dead?

From 2017 to 2022, real estate investors had the best tax deal in a generation. Buy a rental property, run a cost segregation study, and write off 100% of the accelerated depreciation in year one. A $300,000 property could generate $75,000 or more in paper losses — enough to wipe out your W-2 income and drop your tax bill to nearly zero.

That's over.

The Tax Cuts and Jobs Act set an expiration clock on bonus depreciation, and it's been ticking since 2023. In 2025, you're at 40%. In 2026, it drops to 20%. In 2027, it's gone. Zero. So the question every investor is asking me: is the tax break dead? Short answer — no. But you need to adjust your playbook. Here's how.

The Phase-Out Schedule

Let me clear this up, because I hear investors quoting the wrong numbers every week.

Every asset you place in service — meaning the property is ready and available for rent — gets the rate for that calendar year. Not the year you bought it. The year it's placed in service. That distinction matters if you're mid-rehab.

A property you bought in December 2024 but didn't finish rehabbing until February 2025? You get the 2025 rate: 40%. Not 60%. The clock starts when the property is rent-ready, not when you close.

Cost Segregation: Still the Best $5,000 You'll Spend

Here's what didn't change: the ability to reclassify building components into shorter depreciation schedules through a cost segregation study.

Standard residential depreciation spreads the building's value over 27.5 years. That's a slow trickle. A $250,000 depreciable basis gives you $9,091 per year in depreciation. Fine. But boring. And slow.

A cost segregation study takes that $250,000 building and identifies the components that qualify for 5-year, 7-year, and 15-year depreciation. Appliances, carpet, light fixtures — those are 5-year property. Cabinets and countertops? Seven-year. And the outdoor stuff — landscaping, parking lots, fencing — that's 15-year.

On a typical $300,000 rental (excluding land value), a cost seg study reclassifies $75,000 to $90,000 into these shorter categories. At 40% bonus depreciation in 2025, that $75,000 generates an immediate $30,000 deduction — plus normal depreciation on the remaining $45,000 over 5-15 years.

What does a study cost? Anywhere from $3,500 to $7,000 depending on property size. On a property worth $300,000+, the return on that investment is absurd. You spend $5,000 to unlock a $30,000 deduction that saves you $10,500 if you're in the 35% bracket.

Still worth it? At $10,500 in tax savings on a $5,000 study? Yeah. Still worth it.

Section 179: The Misunderstood Alternative

With bonus depreciation fading, investors are turning to Section 179 as a backup. And it works — but not the way most people think.

Section 179 lets you expense the full cost of qualifying property in the year it's placed in service. The 2025 limit is $1,220,000 with a phase-out starting at $3,050,000 in total property placed in service. Those are big numbers. But here's the catch: Section 179 applies to personal property, not real property.

Translation: appliances, fixtures, furniture, certain HVAC systems, some interior improvements — all fair game. The building itself, the roof, the foundation? Off limits. Section 179 covers the stuff inside the building, not the building itself.

For a rental property, Section 179 typically covers $15,000 to $40,000 in qualifying items. New appliances ($3,000-$5,000 per unit), flooring ($4,000-$8,000), light fixtures, window treatments, security systems. On a four-unit building, that adds up fast.

The real power of Section 179 comes when you pair it with a cost segregation study. The cost seg identifies everything that qualifies. Section 179 lets you deduct 100% of it in year one — no phase-out, no sunset. Unlike bonus depreciation, Section 179 isn't going away.

But there's one more rule: Section 179 can only reduce your business income to zero. It can't create a loss. If your rental NOI is $18,000 and you've got $30,000 in Section 179 deductions, you can use $18,000 this year. The remaining $12,000 carries forward. Bonus depreciation doesn't have this restriction — it can create losses. That's a real difference if you're using real estate losses to offset W-2 income.

The Real Math: What 40% Saves You Today

Let's make this concrete with a deal in Birmingham, Alabama.

You buy a duplex for $278,000. Land value: $28,000. Depreciable basis: $250,000. You close in March 2025 and have it rent-ready by April.

Without cost segregation: $250,000 ÷ 27.5 years = $9,091 in annual depreciation. At a 35% marginal tax rate, that saves you $3,182 per year. Predictable. Boring. Fine.

With cost segregation: the study identifies $80,000 in short-life components. At 40% bonus depreciation, $32,000 is deductible immediately. The remaining $48,000 depreciates over 5-15 years. Plus the $170,000 building balance keeps depreciating at $6,182/year over 27.5 years.

Year one total depreciation: $32,000 (bonus) + $6,182 (building) + roughly $7,000 (first-year normal depreciation on the non-bonus short-life assets) = $45,182.

At a 35% tax rate, that's $15,814 in tax savings in year one. Compare that to $3,182 without the cost seg. That's $12,632 in extra cash in your pocket. On a property that's already producing cash flow from rent.

$12,632 in extra cash. In your pocket. Year one. Use it as a down payment on the next property. Park it in reserves. Either way, it's the difference between scaling this year and waiting.

The Depreciation + 1031 Combo

This is the play that builds generational wealth. And it's simpler than you'd think.

You depreciate a property aggressively using cost segregation. You take $100,000+ in depreciation deductions over 5-7 years. Those deductions reduce your taxable income every year. Beautiful.

But when you sell, the IRS wants that back. It's called depreciation recapture, and it's taxed at 25%. On $100,000 in accumulated depreciation, that's a $25,000 recapture tax bill. On top of the capital gains tax on your profit. That's $25,000 you'll never see again.

Unless you do a 1031 exchange.

A 1031 exchange lets you sell an investment property and reinvest the proceeds into a like-kind property — and defer both the capital gains tax AND the depreciation recapture tax. Not eliminate. Defer. But defer for how long? As long as you keep exchanging. The tax bill rolls forward indefinitely.

Sell the Birmingham duplex for $347,000 after 5 years. Without a 1031, you'd owe roughly $17,250 in capital gains (on $69,000 profit at 25% combined federal/state) plus $25,000 in depreciation recapture. That's $42,250 in taxes.

With a 1031 exchange into a $500,000 fourplex in Memphis? You pay $0 in taxes today. The entire $347,000 rolls into the new property. You start a fresh cost segregation on the fourplex, take new depreciation deductions, and the cycle continues.

This is how investors build multimillion-dollar portfolios while paying minimal taxes — legally. Depreciation shelters the income. 1031 exchanges defer the reckoning. And when you die? The basis steps up — your heirs inherit at fair market value and the deferred tax bill vanishes. That's a whole other episode. For the full breakdown, check out our tax optimization guide.

What to Do Right Now

One — if you're buying in 2025, close and rehab fast. Every month you delay is a month closer to 20% bonus depreciation in 2026. Get the property placed in service this year to capture the 40% rate.

Two — get a cost segregation study on every rental property you own that you haven't studied yet. Even properties you bought years ago qualify for a "look-back" cost seg. Your CPA files a Form 3115 — a change in accounting method — and you take the catch-up depreciation in a single year. No amended returns needed.

Three — talk to your CPA about pairing Section 179 with the remaining bonus depreciation. The combination still produces serious year-one deductions. Most CPAs default to straight-line depreciation because it's simple. Push back. The money is in the details.

Bonus depreciation isn't dead. Not yet. But the 100% era is gone, and every year it gets smaller. The investors who act in 2025 get a benefit that's literally shrinking by 20 percentage points a year. Don't leave that money on the table.