Bonus Depreciation for Property Investors: What You Need to Know

Bonus depreciation allows you to deduct a percentage of an asset's cost in the year it is placed in service, rather than spreading the deduction over its normal recovery period. For property investors, it has historically been one of the most powerful tools available, and it still provides meaningful benefits even as the rules have changed.

How Bonus Depreciation Works

When you place a qualifying asset in service, bonus depreciation lets you deduct a fixed percentage of that asset's cost immediately. The original TCJA phase-down schedule reduced the rate each year from 2023 through 2027. However, recent legislation restored 100% bonus depreciation for qualifying property acquired after January 19, 2025.

The applicable bonus rate is based on when the property was acquired or placed in service. Confirm current rules with your CPA.

The Connection to Cost Segregation

Here is where cost segregation becomes especially valuable. Bonus depreciation only applies to assets with a recovery period of 20 years or less. The 27.5-year residential structure itself does not qualify.

But the components identified in a cost segregation study, the 5-year, 7-year, and 15-year assets, do qualify. By separating those components out, you unlock bonus depreciation on the portion of your property that is eligible.

Even at 2026's 20% bonus rate, if a cost segregation study identifies $100,000 in 5- and 15-year property, you can take an immediate 20% deduction ($20,000) on top of the regular MACRS depreciation on those assets. That is additional first-year deduction that would otherwise be spread over years.

A Practical Example

Consider a $500,000 rental with a $60,000 land value, giving a $440,000 depreciable basis. A cost segregation study identifies $110,000 in 5- and 7-year personal property and $25,000 in 15-year land improvements.

In 2026 at a 20% bonus rate:

• Bonus depreciation on $135,000 in eligible assets: $27,000
• Regular MACRS depreciation on remaining $135,000 over their normal schedules
• Standard 27.5-year depreciation on remaining $305,000 basis

Total first-year depreciation is significantly higher than the baseline $16,000 annual 27.5-year deduction alone.

Short-Term Rentals and the Passive Activity Rules

For short-term rental investors, cost segregation combined with bonus depreciation can be especially powerful. If your average guest stay is 7 days or less and you materially participate in the rental activity (typically 100+ hours per year of management, communication, maintenance oversight), the IRS treats the activity as non-passive.

This means the accelerated depreciation losses can offset your W-2 or business income — not just passive rental income. For high-income earners, this is often the single largest tax benefit of STR ownership. A cost segregation study is the piece that generates the loss; material participation is what determines where you can apply it.

Long-term rental investors benefit from cost segregation too. The accelerated depreciation offsets passive rental income and can create losses that carry forward or offset gains from other rental properties. And investors with Real Estate Professional Status (REPS) can apply those passive losses against ordinary income regardless of whether the rental is short-term or long-term.

Is It Still Worth It With Lower Bonus Rates?

Yes, for most investors. Even at reduced rates, cost segregation delivers two benefits: the bonus depreciation deduction on eligible components, and the regular MACRS accelerated deduction on the same components over 5, 7, or 15 years instead of 27.5. Both accelerate deductions relative to the standard approach.

The break-even math still works strongly in favor of a study for most residential rentals. Use the free calculator to run the numbers on your property, or read how much a study can realistically save you.