DSCR Bonus Depreciation 2026: 100% Is Back

The One Big Beautiful Bill Act (OBBBA), signed into law on July 4, 2025, permanently restored 100% bonus depreciation for qualified property acquired after January 19, 2025. Under the previous Tax Cuts and Jobs Act phase-down schedule, the 2026 bonus rate would have been just 20%. Under the OBBBA, it is 100% — and permanent. For DSCR investors who combine DSCR financing with a cost segregation study, this is the most powerful depreciation environment since 2022.

The Updated Schedule

Bonus depreciation under IRC § 168(k), as amended by the OBBBA, applies the following rates:

IRS Notice 2026-11 provides interim guidance on the OBBBA bonus depreciation rules. Taxpayers can rely on this notice pending final regulations.

What qualifies: Short-life components (5-year, 7-year, and 15-year MACRS property) identified through a cost segregation study — things like appliances, flooring, fixtures, landscaping, driveways, and fencing. The 27.5-year residential building structure does not qualify. Bonus depreciation is applied to the reclassified short-life components, not to the building as a whole.

The 40% election: For the first taxable year ending after January 19, 2025, taxpayers may elect to take only 40% (rather than 100%) bonus depreciation. This is an irrevocable election. The vast majority of investors will prefer the full 100% — the election exists for those with specific tax planning reasons to spread the deduction.

Why This Matters for DSCR Investors

Under the old phase-down schedule, a property placed in service in 2026 would yield only 20% bonus on reclassified components. Under the OBBBA, it is 100%. The difference is substantial — particularly for properties with $500,000+ in depreciable basis.

The comparison that matters: An investor who acquires a $750K rental property with a cost segregation study in 2026:

• Under old law (20% bonus): ~$18,450 incremental year-1 deduction from short-life components
• Under OBBBA (100% bonus): ~$92,250 incremental year-1 deduction from short-life components
• Difference: ~$73,800 in additional deductions → approximately $27,306 in additional year-1 federal tax savings at a 37% marginal rate

The 100% environment means investors who previously found cost segregation “nice to have” should now treat it as essential analysis on any DSCR acquisition above $500K in depreciable basis.

The Deal-Velocity Case for DSCR + Cost Segregation

DSCR financing is uniquely compatible with cost segregation timing because:

Fast close. DSCR underwriting can be completed in 21–28 days from a complete application. That means properties are placed in service quickly — starting the depreciation clock without months of financing delays.

LLC-friendly. DSCR closes directly into an LLC, which aligns with the typical cost segregation treatment where the entity, not the individual, holds the asset.

Income-agnostic qualification. A high-income investor who might be blocked by DTI on a conventional loan can still use DSCR — and then use cost segregation to shelter that high income with the 100% bonus deduction. The two strategies reinforce each other.

Portfolio stacking. Investors with multiple DSCR properties generate passive income across their portfolio. A large first-year bonus deduction on a new acquisition can offset that passive income, dollar-for-dollar.

How DSCR Fits: The Fastest Reliable Path to Maximize Bonus Depreciation

The mechanics of maximizing bonus depreciation are simple: the property must be placed in service (acquired and available for rent) in the applicable tax year. DSCR’s predictable close timeline makes this straightforward:

1. A DSCR application submitted with a complete file moves through underwriting in 21–28 days.
2. Cost segregation firms can deliver a feasibility estimate before closing — so you know the benefit before you commit the study cost.
3. The study is typically completed within 60–90 days of close, well before the tax return deadline for the acquisition year.

That decision sits inside our DSCR Authority Blog hub, where DSCR Authority maps program fit and what investors usually prep before booking a strategy call.

Cost-Seg + 100% Bonus Stack: Worked Example

Property: $750,000 SFR purchase, DSCR-financed at 70% LTV ($525,000 loan). Placed in service 2026. Cost segregation study conducted post-close.

Depreciable basis calculation:

Cost segregation reclassification (illustrative):

Year-1 depreciation with cost-seg + 100% OBBBA bonus:

Without cost segregation (straight-line only): $615,000 ÷ 27.5 = $22,364

Incremental deduction from cost-seg + 100% bonus: $111,259 − $22,364 = $88,895

At a 37% federal rate, the year-1 tax savings on the incremental deduction is approximately $32,891 — many times the cost of a $6,000–$8,000 cost segregation study.

Compare to old 20% rule: Under the now-superseded TCJA phase-down, the same property would have generated ~$26,576 in incremental deduction and ~$9,833 in year-1 tax savings. The OBBBA’s 100% rate produces more than 3× the benefit.

Catch-Up Opportunity: Prior-Year Acquisitions

If you acquired a DSCR property after January 19, 2025 and did not complete a cost segregation study at the time, you may be able to catch up the missed bonus depreciation by filing a Form 3115 (Change in Accounting Method). This catch-up takes the accumulated missed deductions as a single lump in the year of filing. Coordinate with your CPA on timing and feasibility — the opportunity exists for 2025 acquisitions where you didn’t maximize the 100% rate at close.

Want to maximize 2026 deductions? A DSCR close and cost segregation study can be coordinated before year-end. Get matched with a DSCR lender and ask about connecting with our cost-seg partners.

This article is general information and not tax or legal advice. Coordinate with your CPA and attorney before acting. Tax law can change — confirm current rates and rules with a qualified tax advisor.

Frequently asked questions