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Oregon HB 4015: Updating State Conformity to Federal Tax Law

  • Feb 2
  • 4 min read

Hey there, fellow Oregon landlords, property managers, and real estate investors. Christian Bryant here from the Portland Area Rental Owners Association (PAROA). Tax season might still feel fresh in our minds, but the 2026 legislative session is already bringing forward bills that touch on how we calculate those numbers. House Bill 4015 is one of those routine but important measures—it's all about keeping Oregon's tax code in step with federal changes.


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Mr Portland Landlord reports this article

What the Bill Actually Says


Introduced in late January 2026 at the request of the House Interim Committee on Revenue for Representative Nancy Nathanson, HB 4015 is currently at the House Desk awaiting first reading. No committee assignment yet, no amendments, and no hearings scheduled—it's in the very early phase. The full introduced text is available as a PDF on the Oregon Legislative Information System (OLIS), linked below.


The bill's title and catchline are straightforward: "Relating to connection to federal tax law; prescribing an effective date." In essence, it updates the date as of which Oregon conforms to the federal Internal Revenue Code (IRC) and other federal tax provisions. Oregon generally ties its personal and corporate income tax definitions to the federal code as of a specific date, allowing most federal changes to flow through automatically. This bill moves that reference date forward, incorporating federal updates (or maintaining conformity) while prescribing an effective date for the changes.


Tax forms with Oregon and federal sync illustrating HB 4015 conformity bill.
Syncing up: The role of Oregon federal tax conformity updates in rental calculations.

These conformity bills are standard housekeeping—states do them periodically to avoid massive decoupling and simplify compliance. Without updates, Oregon could drift out of sync, creating separate calculations for federal vs. state returns.


Impacts on Landlords and Property Managers


For day-to-day rental operations, this bill doesn't introduce new taxes or deductions specific to housing. Instead, it ensures continuity: federal rules on rental income, expenses, depreciation, and losses generally apply at the state level too. If recent federal changes benefited rentals—like extended bonus depreciation for improvements or qualified business income deductions—they'd continue flowing through to your Oregon return.


In a nonconformity scenario (without this update), you'd face duplicate work: one set of numbers for federal, another for state. That adds accounting costs and error risks, especially for smaller landlords juggling multiple properties. Conformity keeps things streamlined—your Schedule E flows mostly intact to the state form.


Impacts on Real Estate Investors


Investors with larger portfolios or pass-through entities rely heavily on federal provisions like Section 179 expensing, bonus depreciation for equipment or improvements, or opportunity zone incentives. Updating conformity means these tools stay available (or limited) consistently across federal and state taxes. In growing markets like Central Oregon or the Willamette Valley, where investors flip or hold rentals, alignment reduces surprises at filing time.


If federal law added investor-friendly changes post the old conformity date, this bill incorporates them—potentially lowering state taxable income from rentals. Conversely, if federal tightened rules, Oregon follows suit unless decoupled elsewhere.


Impacts on Developers


Development often involves complex tax strategies—cost segregation, energy credits, or low-income housing tax credits (LIHTC, which layers federal and state). Conformity ensures federal basis calculations carry over, simplifying state depreciation and gain recognition on sales. For multifamily projects, consistent treatment of construction interest or rehab expenses avoids double math.


Common Scenarios and Pitfalls


Think about bonus depreciation: Federal allows 60% in recent years for qualified property. With updated conformity, your new HVAC in a Portland triplex deducts similarly on state returns—big cash flow help. Without update, Oregon might stick to older rules, reducing state deductions.


Or a 1031 exchange: Federal deferral flows through if conformed—sell one rental, buy another, defer gains state-side too. Drift apart, and state taxes hit immediately.

Pitfall: Assuming full conformity forever. Oregon sometimes decouples from specific federal items (e.g., certain CARES Act provisions in past)—watch for those in revenue impacts.


Landlord comparing federal and state tax returns for Oregon rentals.
Aligned or apart? How Oregon federal tax conformity updates affect rental filings.

Best-Practice Tips


Stay on top of tax changes, conformity or not:

  • Work with a CPA familiar with Oregon nuances—rental-specific deductions vary.

  • Track federal changes via IRS updates; if conformed, they likely hit state too.

  • Use software that handles multi-state rentals—flags conformity issues.

  • For portfolios, model scenarios: What if Oregon decouples from a key provision?

  • Document improvements meticulously—depreciation lives depend on federal rules.

  • Join alerts from Oregon Department of Revenue for conformity notices.


Related Considerations


Oregon's conformity approach balances revenue needs with taxpayer simplicity. Past sessions decoupled from items like net operating loss limits or GILTI to protect the state budget. This bill appears a broad update without specific decouplings listed—keeps most rental investors aligned.


Humorously, tax code conformity is like syncing your phone to the cloud: Do it regularly, and everything works smoothly; skip it, and suddenly half your apps are outdated. In real estate, where margins matter and deductions add up, that sync saves headaches.


The bill could see technical amendments in Revenue Committee for specific ties or decouplings.


Call to Action


HB 4015 is housekeeping but affects your bottom line—pay attention early.





Share how federal conformity (or lack thereof) impacts rental investments or compliance costs. Practical voices help fine-tune these bills.


Taxes wait for no one—stay informed, and PAROA has resources if questions arise.


Sources:

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Portland Area Rental Owners Association

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