Cost Segregation in Oregon

1. What a cost segregation study does

A building normally depreciates over 27.5 years (residential) or 39 years (commercial). A cost segregation study breaks the purchase price apart and reclassifies components like flooring, cabinetry, dedicated electrical, and land improvements into 5, 7, and 15-year property, so a large slice of the basis depreciates on much shorter schedules.

On the federal return, that reclassified property also qualifies for bonus depreciation, which restores a 100% first-year write-off for qualifying property acquired and placed in service after January 19, 2025. States set their own rules, which is where Oregon comes in.

2. Oregon and federal bonus depreciation

Oregon's rolling conformity means OBBBA's permanent 100% bonus depreciation flowed through automatically for property placed in service in tax years beginning before January 1, 2026, so a 2025-year cost seg gets full 100% bonus on the Oregon return. But SB 1507 (2026 regular session, signed April 9, 2026) decouples Oregon from post-TCJA 168(k) for property placed in service in tax years beginning on or after January 1, 2026: new ORS chapter 316 (individual) and chapter 317 (corporate) sections require an addition for the difference between the federal 168(k) deduction and the deduction allowed under 168(k) as in effect December 1, 2017. Because pre-TCJA 168(k) allows 0% bonus for property placed in service after 2019, the practical result is a 100% addback of all bonus depreciation on 2026-and-later assets, for individuals and corporations alike. SB 1507 does not decouple from IRC 168(n) (OBBBA's qualified production property expensing).

For property placed in service in tax years beginning on or after 1/1/2026: add back 100% of the 168(k) bonus deduction (federal deduction minus the zero allowed under 12/1/2017-era 168(k)). Recovery is by annual subtraction in the tax years the depreciation would have been allowed under the IRC as in effect December 1, 2017, i.e. regular MACRS depreciation spread over the asset's normal 5/7/15/27.5/39-year recovery period. Full recovery over the asset's life; it is a timing difference, not a permanent disallowance.

3. Section 179 in Oregon

Oregon fully conforms to federal Section 179, including OBBBA's increased $2.5M/$4M limits, through rolling conformity to federal taxable income. SB 1507 did not touch Section 179. Oregon DOR's Schedule OR-DEPR instructions state the federal 179 election and amount are also effective for Oregon; no separate Oregon cap exists for assets placed in service since 2011 (Oregon only disconnected from 179 limit increases for the 2009-2010 window). For 2026+ property, Section 179 becomes the main year-one expensing lever on the Oregon return since bonus is added back.

4. Does it still help in Oregon?

Yes. Oregon uses the same depreciation method and life as the federal return for assets placed in service since 2011, so reclassifying building components into 5-, 7-, and 15-year MACRS property still accelerates Oregon depreciation materially versus 27.5/39-year straight-line even with the 2026+ bonus addback, and Section 179 (where eligible) still expenses in full for Oregon.

• •Hard placed-in-service cliff: TY2025 assets get full 100% OBBBA bonus on the Oregon return; assets placed in service in tax years beginning on or after 1/1/2026 get a 100% addback (SB 1507 measured against 168(k) as in effect 12/1/2017, which allows 0% bonus for such property)
• •Recovery is not a fixed percentage schedule like Minnesota's 80%/5-year mechanism; added-back bonus comes back as the regular MACRS deductions that would have applied under pre-TCJA law over the asset's 5/7/15/27.5/39-year life
• •SB 1507 deliberately does NOT decouple from IRC 168(n), so OBBBA's 100% expensing for qualified production property still flows through to Oregon
• •SB 1507 also decouples Oregon from OBBBA's expanded QSBS Section 1202 gain exclusion and the new car-loan interest deduction, and advances Oregon's static IRC reference date from Dec 31, 2023 to Dec 31, 2025
• •Legacy trap: Oregon disconnected from 168(k) bonus and Section 179 limit increases for assets placed in service in 2009-2010; those assets still require separate Oregon depreciation on Schedule OR-DEPR, as do assets first placed in service outside Oregon
• •Section 179 has no Oregon cap: the federal election and amount apply as-is (confirmed in DOR's OR-DEPR instructions), making 179 the primary year-one expensing tool on Oregon returns for 2026+ property
• •Oregon's companion SB 1510 extended the PTE-E pass-through entity tax election through tax years beginning before Jan 1, 2028, relevant to investors running rentals through electing entities
• •Portland Metro SHS and Multnomah County Preschool for All taxes start from Oregon taxable income, so the bonus addback increases those local taxes too

5. The exit: recapture and timing

The accelerated deductions come back into view when you sell. Gain attributable to the 5, 7, and 15-year property is Section 1245 recapture, taxed at ordinary rates, and the straight-line depreciation on the building itself is unrecaptured Section 1250 gain, taxed at up to 25%. A study does not create that bill, it moves deductions forward, but the timing of the sale decides how much of the benefit you keep.

Two levers manage the exit. A 1031 exchange defers both flavors of recapture along with the rest of the gain, and simply holding the property lets the time value of the early deductions do its work; most owners want a 3 to 5 year horizon before a taxable sale for the math to stay comfortably positive. Model the exit before you commission the study, not after.