Unused credits represent the nonrefundable portion of a tax credit that exceeds a taxpayer’s current-year liability and is preserved for future use. In the context of Oregon’s semiconductor research and development (R&D) incentive, these credits are carried forward to offset tax obligations in the next five succeeding tax years.

The Strategic Resurgence of R&D Incentives in Oregon

The legislative landscape of Oregon has historically prioritized innovation as a cornerstone of its economic identity, particularly through the development of the “Silicon Forest.” However, the state experienced a significant hiatus in broad-based R&D incentives after the previous research credit expired in 2017. Recognizing the intensifying global competition in the semiconductor industry and the strategic importance of domestic manufacturing and design, the 2023 Oregon Legislature enacted House Bill 2009, also known as the Oregon CHIPS Act. This legislation established the Research and Development Tax Credit for Semiconductors, codified under Oregon Revised Statutes (ORS) 315.518 through 315.522. This credit is not merely a financial subsidy but a targeted instrument designed to incentivize qualified semiconductor companies to increase their investments in Oregon-based research. The credit is applicable to tax years beginning on or after January 1, 2024, and is currently scheduled to sunset on December 31, 2029.

The reintroduction of this credit marks a shift toward a more specialized incentive structure. Unlike the previous general credit, the current framework is exclusively available to companies engaged in trade or business directly related to semiconductors, including design, fabrication, testing, and the creation of intellectual property. The mechanics of the credit, specifically the “Unused Credit” carry forward provisions, are integral to the program’s utility for large-scale manufacturers who may experience volatile tax liabilities due to significant capital investments. The ability to carry forward credits ensures that the incentive remains valuable even in years when a company’s tax liability is minimized by other deductions or temporary operating losses.

Definitional Foundations and Eligibility Criteria

To understand the mechanics of unused credits, one must first identify the types of entities and activities that generate these tax attributes. The Oregon Business Development Department, commonly known as Business Oregon, and the Oregon Department of Revenue (DOR) provide joint oversight and guidance on eligibility.

Qualified Semiconductor Companies

The credit is available to “qualified semiconductor companies” that are subject to either personal income taxes under ORS Chapter 316 or corporate excise taxes under ORS Chapter 317. A qualified semiconductor company is defined by its primary engagement in activities essential to the semiconductor value chain.

The research must be conducted within the borders of Oregon to be considered for the credit. This geographical restriction ensures that the state’s tax expenditures directly correlate with local economic activity and the employment of Oregon residents.

Qualified Research Expenses (QREs)

Oregon law adopts the federal definitions for qualified research expenses as outlined in Internal Revenue Code (IRC) Section 41, with specific state-level modifications. QREs generally consist of the sum of in-house research expenses and contract research expenses.

• In-House Research Expenses: These include wages paid to employees performing, supervising, or supporting research (such as chip design engineers), and supplies consumed during the research process, such as prototypes and testing components.
• Contract Research Expenses: These are payments made to third parties for research services conducted on behalf of the taxpayer in Oregon.
• Basic Research Payments: Contributions to Oregon universities or qualified nonprofit organizations for fundamental semiconductor research.

The integration of federal standards through IRC Section 41 means that taxpayers must satisfy the “Four-Part Test” to ensure their activities qualify as research. The activities must be technological in nature, involve a permitted purpose, seek to eliminate technical uncertainty, and involve a process of experimentation.

Calculation Methodologies and the Certified Amount

The “certified amount” is the maximum tax credit a taxpayer is authorized to claim for a given tax year, as determined by Business Oregon. The actual amount used to calculate any “unused” portion is derived from two primary methods: the Regular Method and the Alternative Simplified Credit (ASC) method.

The Regular Calculation Method

The regular method provides a credit equal to 15% of the “excess amount” of QREs over a base amount. The 15% rate is slightly lower than the federal 20% rate but remains among the highest state-level incentives in the nation.

The base amount is calculated using a fixed-base percentage multiplied by the taxpayer’s average Oregon sales for the preceding four tax years. For semiconductor firms, “gross receipts” in the federal formula is replaced by the Oregon sales factor as defined in ORS 314.665.

The Alternative Simplified Credit (ASC) Method

Taxpayers may elect to use the ASC method on Schedule OR-RESEARCH (Form 150-102-130). This election is generally irrevocable without the express approval of the Department of Revenue.

The ASC method is often preferred by established firms with high historical QREs or by startups that lack the necessary historical data to compute a fixed-base percentage.

Caps and Proration Mechanics

The Oregon semiconductor R&D credit is subject to both individual and statewide caps. A single taxpayer may not claim more than $4 million in credits per year. Furthermore, the state has established annual caps on the total amount of credits that can be certified across all taxpayers.

If the total amount of potential tax credits across all timely applications exceeds the statewide cap for a tax year, Business Oregon is required to prorate the allocations. Proration involves reducing certified credit amounts that exceed $200,000 by a ratio necessary to maintain the total within the cap limits. This proration directly affects the “Total Credit” available, thereby reducing the volume of credits that can eventually become “Unused Credits” for carry forward purposes.

Mechanics of Carry Forward and the Tiered Refundability System

The core of the “Unused Credit” concept lies in how the total certified credit is split between a refundable portion and a nonrefundable portion. Oregon utilizes a tiered system based on the number of Oregon-based employees at the end of the tax year.

Refundability Tiers

The refundability of the credit is designed to provide immediate liquidity to smaller firms while requiring larger firms to carry forward their incentives as a means of future tax mitigation.

For a large taxpayer with 3,000 or more employees, the entire $4 million maximum credit is nonrefundable. If this taxpayer has an Oregon tax liability of only $1 million, the remaining $3 million represents the “Unused Credit” that enters the carry forward cycle.

The Five-Year Carry Forward Window

Unused nonrefundable portions of the credit may be carried forward for a period of up to five tax years. The statute (ORS 315.518) stipulates that any tax credit otherwise allowable that is not used by the taxpayer in the year it is earned may be carried forward and offset against the taxpayer’s tax liability for the next succeeding tax year. This process continues until the fifth succeeding tax year, after which any remaining unused credit expires and is no longer available to the taxpayer.

The mechanics of the carry forward are strictly “First-In, First-Out” (FIFO), meaning the oldest credits must be used first to reduce the risk of expiration. Taxpayers must carefully track each year’s “vintage” of unused credits to ensure proper application and reporting on their annual returns.

State Revenue Office Guidance on Credit Application

Both Business Oregon and the Department of Revenue provide detailed guidance on the sequence of credit application and the documentation required to preserve carry forward claims.

The Certification Process (Business Oregon)

Before a taxpayer can claim a carry forward, they must have a valid certification for the tax year in which the credit originated. Business Oregon establishes the following requirements for annual certification:

1. Application Deadline: Applications must be submitted by October 15 of the calendar year in which the tax year begins.
2. Application Fee: A fee of $3,000 (increased for 2025) is required to cover administrative costs.
3. Required Documentation: Taxpayers must provide a narrative of their qualifying semiconductor activities, an attestation of Oregon QREs, and reports of QREs from the preceding three years.
4. Issuance of Certificate: Business Oregon reviews applications and issues a certification stating the maximum potential tax credit amount.

Guidance from Business Oregon emphasizes that certification of eligibility for a particular amount does not necessarily entitle a taxpayer to claim that amount. The actual claim depends on the actual QREs incurred, which are subject to audit by the Department of Revenue.

Reporting and Sequential Application (Department of Revenue)

The Department of Revenue provides administrative rules (OAR 150-315-0195) regarding the application of the credit.

The nonrefundable portion of the tax credit must be applied first to the taxpayer’s regular tax liability calculated under ORS 317.061. Other payments, such as estimated tax payments or withholding, are subtracted from the regular tax liability after the nonrefundable portion of the credit is applied. This sequence is critical because it ensures that non-expiring payments do not “use up” the tax liability that could have been offset by an expiring carry forward credit.

Furthermore, the nonrefundable portion (the carry forward portion) may not be used to satisfy any ORS 317.090 minimum tax obligation. However, the refundable portion of the credit may be used to satisfy the minimum tax.

Forms and Tax Codes

Taxpayers utilize Schedule OR-ASC-CORP to report and track carry forward credits. Each credit is identified by a specific three-digit code.

The Schedule OR-RESEARCH (Form 150-102-130) is the primary worksheet used to determine the total credit and split it into the refundable and nonrefundable portions. Line 24 of the 2024 Schedule OR-RESEARCH specifically calculates the nonrefundable portion that is carried forward to future years.

Legal Interaction with Corporate Structures and Minimum Taxes

The application of unused credits is further complicated by the diverse corporate structures of semiconductor firms, including C-corporations, S-corporations, and unitary groups.

Minimum Tax Obligations (ORS 317.090)

Oregon imposes a minimum tax on C-corporations based on their Oregon sales.

Because the carry forward (nonrefundable) portion of the R&D credit cannot reduce the minimum tax, a taxpayer with zero regular tax liability but high Oregon sales must still pay the minimum tax, even if they have millions in unused R&D credits. However, if the taxpayer qualifies for a refundable portion, that refundable amount can reduce the minimum tax to zero.

S-Corporations and Pass-Through Treatment

S-corporations do not generally pay corporate excise tax on their income; instead, the items of income, deduction, and credit flow through to the shareholders. For the semiconductor R&D credit, each shareholder is allowed their pro rata share of the credit to be claimed against their personal income tax liability.

If an S-corporation generates a credit, the “Unused Credit” carry forward remains at the shareholder level. If a shareholder cannot use the entire credit on their personal return, they may carry it forward for up to five years, regardless of their ongoing relationship with the S-corporation. However, the S-corporation itself is responsible for the $150 minimum excise tax, which cannot be offset by the credits passed through to the shareholders.

Unitary Groups and Transferability

Oregon requires corporations that are part of a unitary business to file a combined return. While the unitary group files together, certifications for the semiconductor R&D credit are issued to the specific entity that performed the research. Generally, tax credits in Oregon may only be transferred if specifically authorized by statute. The semiconductor R&D credit statute (ORS 315.518-522) does not currently provide for the general transfer or sale of the credit to unrelated third parties, though it may be shared among members of a combined group under standard consolidated filing rules.

Detailed Example: The Lifecycle of a Carry Forward

Consider Quantum Lithography Inc., a semiconductor fabrication firm with a significant presence in Oregon.

Year 1 (2024): Initial Credit Generation

• Oregon Employees: 400 (Falls into the 50% refundability tier).
• Oregon QREs: $20,000,000.
• Base Amount: $10,000,000.
• Excess QREs: $10,000,000.
• Calculated Credit (15%): $1,500,000.
• Oregon Tax Liability: $500,000.

Year 1 Breakdown:

1. Split: The $1,500,000 credit is split 50/50. $750,000 is refundable; $750,000 is nonrefundable.
2. Application: The $750,000 nonrefundable portion is applied first to the $500,000 liability.
3. Liability Outcome: The liability is reduced to zero. $250,000 of the nonrefundable portion remains unused.
4. Carry Forward: This $250,000 becomes a “Year 1 Carry Forward” available for the next five years (until 2029).
5. Refund: The $750,000 refundable portion is issued as a cash refund to the taxpayer.

Year 2 (2025): Scaling Operations

• Oregon Employees: 600 (Firm moves to the 25% refundability tier).
• Year 2 Calculated Credit: $1,000,000.
• Year 2 Tax Liability: $400,000.
• Prior Carry Forward: $250,000 (from Year 1).

Year 2 Breakdown:

1. Split: $250,000 is refundable (25%); $750,000 is nonrefundable (75%).
2. Application Hierarchy:

• Step 1: Apply the Year 1 Carry Forward of $250,000. (Remaining liability: $150,000).
• Step 2: Apply $150,000 of the current Year 2 nonrefundable credit. (Remaining liability: $0).

3. New Carry Forward: The remaining $600,000 ($750,000 – $150,000) of the Year 2 nonrefundable credit is carried forward.
4. Refund: The $250,000 Year 2 refundable portion is issued as a refund.

*The $400,000 used for tax consists of the $250,000 carry forward from 2024 and $150,000 from the current 2025 nonrefundable portion.

Federal Interaction and the 25/25 Limitation

The utility of Oregon’s R&D credit is significantly influenced by federal tax limitations, specifically the “25/25 limitation” under IRC Section 38(c)(1). While this is a federal rule, it often impacts how companies perceive their credit balances.

The 25/25 limitation restricts taxpayers with over $25,000 in regular tax liability from offsetting more than 75% of their tax liability using general business credits, including the R&D credit. Although Oregon’s state-level rules (ORS 315.518) do not explicitly include a 75% cap on the use of the state credit, many corporations follow similar conservative tax-planning strategies, leading to higher levels of unused credits carried forward.

Furthermore, the Tax Cuts and Jobs Act (TCJA) eliminated the Alternative Minimum Tax (AMT) for C-corporations, which has historically been a major barrier to the full utilization of R&D credits. This change has increased the immediate value of current R&D credits but has also focused attention on the 80% limitation on Net Operating Losses (NOLs). Because NOLs are now limited to 80% of taxable income, taxpayers are increasingly relying on tax credits like the Oregon semiconductor credit to offset the remaining 20% of their liability.

Legislative Refinements and Future Outlook

The Research and Development Tax Credit for Semiconductors has already undergone technical refinements since its 2023 inception.

House Bill 2095 (2025 Session)

During the 2025 Regular Session, the House Committee on Revenue introduced HB 2095 to address an “obsolete reference” in the credit’s enabling statute. The original statute (ORS 315.518) referenced IRC Section 41(c)(4) as the “alternative incremental credit,” but federal law had renumbered this section to refer to the “alternative simplified credit”. HB 2095 corrected this terminology to ensure that the ASC method remained legally sound for Oregon taxpayers.

The 2029 Sunset and Carry Forward Preservation

The credit is available for tax years beginning before January 1, 2030. There is significant debate among tax professionals regarding the status of unused credits after the sunset date. Generally, carry forward provisions allow for the use of credits earned before the sunset for the duration of the carry forward period (five years), even if that period extends past the sunset date. However, some interpretations of the statute suggest that credits may only be “carried forward until 2029,” which could imply a total termination of the incentive program.

Taxpayers generating significant unused credits in 2027, 2028, and 2029 should monitor Department of Revenue rulings closely. If the carry forward window is strictly tied to the 2029 sunset, the effective value of the credit diminishes as the sunset approaches. Conversely, if the five-year window is preserved, a credit earned in 2029 could theoretically be used to offset taxes through 2034.

Compliance, Audit, and Documentation Requirements

The Department of Revenue maintains a robust audit program for R&D credits, with a focus on substantiating the “Four-Part Test” and verifying Oregon sales factors.

Substantiation Guidelines

Taxpayers claiming an unused credit carry forward must maintain the following records for at least four years, though a longer period is recommended for carry forwards that span multiple years:

• Project Documentation: Project plans, progress reports, field-test results, and analysis that demonstrate a process of experimentation.
• Financial Records: General ledger detail for wages, supplies, and contract research payments.
• Sales Factor Calculations: Documentation supporting the “gross receipts” or Oregon sales factor used in the base amount calculation.
• Employee Count Proof: Payroll records showing the number of Oregon-based employees at the end of each tax year to justify the refundability tier.

Risk of Revocation

Business Oregon and the Department of Revenue have the authority to revoke a credit if it is determined that the taxpayer was not eligible or that the expenses were improperly documented. If a credit is revoked, the taxpayer is liable for the tax that would have been due, plus interest and potential penalties. Furthermore, any unused carry forward associated with a revoked certification is immediately voided.

Final Thoughts

The “Unused Credit” carry forward provision within the Oregon semiconductor R&D tax credit is a complex but vital mechanism that aligns the state’s tax policy with the long-term investment cycles of the high-tech industry. By allowing for a five-year carry forward of nonrefundable portions, Oregon provides a safety net for firms whose current-year liabilities are insufficient to absorb their innovation incentives. However, the efficacy of this carry forward is bound by a rigorous certification process, a tiered refundability system based on Oregon employment, and a stringent hierarchy of application dictated by state administrative rules. As the semiconductor industry continues to evolve under the influence of federal policies and state-level legislative updates like HB 2095, the strategic management of these unused tax attributes will remain a critical priority for tax professionals and corporate strategists operating within the Silicon Forest.