The Mechanics of Incremental Innovation: A Comprehensive Analysis of Excess QREs within the Michigan Research and Development Tax Credit Framework

Excess QREs represent the specific dollar amount by which a company’s Michigan-based research spending in the current year exceeds its historical three-year average. This incremental value acts as the primary threshold for unlocking higher state tax credit rates, specifically rewarding businesses for expanding their innovative footprint within the state.

The reintroduction of a state-level Research and Development (R&D) tax credit in Michigan, effective for tax years beginning on or after January 1, 2025, signifies a fundamental pivot in the state’s economic development strategy.1 Established through Public Acts 186 and 187 of 2024, the incentive is not merely a broad-based subsidy for existing activities but a targeted mechanism designed to foster aggressive growth in high-tech sectors.2 At the heart of this legislative architecture lies the concept of “Excess QREs”—Qualified Research Expenses that surpass a company’s baseline spending.4 By bifurcating research expenditures into “base” and “excess” tiers, the Michigan Department of Treasury has created a system that balances basic fiscal relief with significant rewards for marginal investment.6 This detailed analysis explores the statutory definitions, the complex calculations of the base amount, the nuances of Treasury guidance, and the strategic implications for businesses navigating Michigan’s unique tax landscape, particularly in the wake of federal decoupling from research expense treatment.2

The Legislative Evolution and Strategic Context of Michigan’s R&D Incentive

To appreciate the significance of Excess QREs, one must first understand the historical vacuum they fill. Michigan previously sunset its R&D incentives in the early 2010s, leaving a decade where businesses relied solely on federal credits to offset innovation costs.3 The passage of House Bills 5100 and 5101, signed by Governor Gretchen Whitmer in early 2025, marks the return of a competitive state-level incentive designed to align Michigan with neighboring Midwest states that have long offered robust R&D rewards.4 The fiscal commitment is substantial, with the bills expected to reduce state revenue by approximately $100 million per tax year, primarily impacting the General Fund and, to a lesser extent, the School Aid Fund.10

The strategic timing of this credit is particularly relevant due to the passage of Michigan House Bill 4961 in October 2025.2 This legislation formally decoupled Michigan’s tax code from federal changes regarding the immediate expensing of research and experimental (R&E) costs.2 While the federal “One Big Beautiful Bill” (OBBBA) restored immediate expensing of domestic R&D costs for 2025 and beyond, Michigan elected to maintain a mandatory five-year amortization period for domestic research and a fifteen-year period for foreign research.2 This decoupling creates a higher near-term taxable income for Michigan businesses, making the refundable R&D tax credit an essential liquidity tool rather than an optional benefit.2

Defining Qualified Research Expenses (QREs) in the Michigan Context

The calculation of Excess QREs depends entirely on the accurate identification of what constitutes a “Qualified Research Expense.” Michigan law adopts the federal definition found in Internal Revenue Code (IRC) Section 41(b) but imposes a strict geographic nexus.1 To qualify for the Michigan credit, the research activity must be physically conducted within the borders of the state.1 Expenses for research conducted outside of Michigan are excluded both from the current year’s calculation and the historical base amount.13

The Four-Part Test of Eligibility

While Michigan looks to the federal definition of QREs, it is the nature of the activity that determines qualification. Businesses must demonstrate that their Michigan-based activities meet the IRS Four-Part Test 2:

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Categorization of Michigan-Specific Expenditures

Once the activity is qualified, the following categories of expenditure incurred in Michigan form the basis of the QRE total 1:

1. Wages: Includes salaries and benefits for employees who are directly performing, supporting, or supervising research activities within Michigan facilities.1
2. Supplies: Tangible property, such as prototypes and raw materials, used in the experimentation process.2
3. Contract Research: Fees paid to third parties for research conducted on the taxpayer’s behalf in Michigan, typically calculated at 65% of the total amount paid.3
4. Computer Rental: Payments for off-site or cloud-based server space specifically utilized for the design or testing of new software in Michigan.2

The Michigan Department of Treasury has emphasized that while the definition of QREs is tied to the IRC, taxpayers should not apply other federal concepts, regulations, or case law interpretations unless they are explicitly incorporated into the Michigan Income Tax Act.13 This “clean” application of Section 41(b) ensures that the Michigan credit remains focused on the physical presence of innovation within the state.6

The Anatomy of the Base Amount

The “Base Amount” serves as the vital benchmark against which current-year innovation is measured. Under MCL 206.677 and 206.717, the base amount is defined as the average annual amount of qualifying research and development expenses incurred in Michigan during the three calendar years immediately preceding the calendar year ending with or within the tax year for which the credit is claimed.6 This reliance on a three-year rolling average ensures that the credit is responsive to the specific historical performance of the taxpayer.5

Rolling Average Mechanics

The legislation accounts for various business life cycles when determining this average. For a mature company operating in Michigan, the calculation is straightforward: the sum of QREs from the three prior years divided by three.5 However, specific rules apply to entities with less robust histories 1:

• Established Businesses: For 2025 claims, the base amount is the average of 2022, 2023, and 2024 Michigan QREs.1
• Newer Entrants: If a business incurred expenses in only one or two of those years, the average is based only on the number of years in which expenses were actually incurred.1
• Startups and Relocations: An authorized business with no prior qualifying Michigan R&D expenses has a base amount of zero.1

A notable point of discussion among tax professionals involves a potential drafting nuance in the statute. If a taxpayer has existed for the full three-year period but only incurred expenses in one of those years (e.g., 2024), the legislation suggests the base amount is the expense of that single year (divided by one) rather than dividing by the three years of existence.15 This approach, described by some as counterintuitive, places a higher threshold on businesses that have sporadic research cycles.15

The Calendar-Year Reporting Requirement

A significant administrative challenge highlighted by Michigan Treasury guidance is the requirement that all calculations—both for the current year and the base years—must be performed on a calendar-year basis.13 This applies even to fiscal-year taxpayers.13 For a corporation with a fiscal year ending June 30, the 2025 credit claim will be based on expenses incurred from January 1 to December 31, 2025, and the base amount will utilize the 2022, 2023, and 2024 calendar years.13 Treasury is developing conversion methods to assist fiscal filers in restructuring their pre-2025 data to meet this calendar-year mandate.13

Calculating Excess QREs: The Incremental Threshold

“Excess QREs” are the surplus of current-year Michigan research spending over the calculated base amount. Mathematically, it is expressed as $\text{Current QREs} – \text{Base Amount}$.4 The Michigan incentive structure is designed to reward this excess more aggressively than the base spending, creating a powerful motivation for companies to expand their Michigan-based teams and facilities.5

Tiered Rates and the Multiplier Effect

The financial impact of generating Excess QREs is substantial, particularly for small businesses. The credit is calculated using two different percentages applied to the two tiers of spending 1:

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For a small business, every dollar of research spending that moves from the “base” category into the “excess” category increases its tax credit value five-fold (from 3% to 15%).5 This makes the incremental dollar spent in Michigan highly efficient. Conversely, if a company maintains a flat spending level year-over-year, its entire credit will be trapped in the 3% base tier.1

The Zero-Base Advantage

The most dramatic application of Excess QREs occurs for new businesses or those moving research operations to Michigan for the first time. Because their base amount is zero, every dollar spent in the first year qualifies as an “Excess QRE”.5 For a semiconductor startup with 50 employees and $1,000,000 in Michigan research wages, the credit calculation would be $(\$0 \times 0.03) + (\$1,000,000 \times 0.15) = \$150,000$.5 In year two, however, their base amount would rise to $1,000,000 (the average of year one), meaning they would only earn the 15% rate on spending that exceeds $1,000,000.5

Treasury Guidance on Administration and Compliance

The Michigan Department of Treasury has issued specific procedural instructions that differ markedly from federal R&D credit administration. Taxpayers must navigate a two-step process: the tentative claim and the final adjusted claim.4

The Tentative Claim and Statutory Deadlines

To manage the statewide aggregate cap of $100 million, Michigan requires taxpayers to submit a “Tentative Claim” before filing their annual return.4 This claim must represent actual expenses incurred during the calendar year.1

• Initial Filing: For the 2025 calendar year, tentative claims must be submitted to Treasury by April 1, 2026.1
• Ongoing Filing: For 2026 and subsequent years, the deadline moves to March 15.1
• Strict Adherence: Missing the tentative claim deadline results in a statutory loss of the credit for that year; no extensions are permitted.5

Aggregate Caps and Proration Mechanics

The total pool of available credits is $100 million per year.1 If the sum of all tentative claims exceeds this amount, Treasury must prorate the credits.4 The proration rules are designed to protect small businesses through a dedicated $25 million reserve.1

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Treasury anticipates publishing the proration factor for each year by April 30, allowing corporations to include the “Adjusted Credit” on their annual returns.1 Due to this timeline, tax professionals suggest that many corporate filers should extend their Michigan returns to ensure the final, adjusted credit amount is accurately reported.15

Entity-Specific Nuances: UBGs and Flow-Through Entities

The treatment of Excess QREs varies based on the legal structure of the business. Unlike the federal credit, which often “flows through” to owners, Michigan’s credit is designed with entity-level stability in mind.4

Unitary Business Groups (UBGs)

For corporate income tax (CIT) purposes, a UBG is treated as a single taxpayer.1 The Department of Treasury has clarified that all calculations must be performed at the group level 13:

• Employee Count: If a group of ten subsidiaries each has 30 employees, the total headcount is 300. The group is thus a “Large Business” and qualifies for a 10% rate on Excess QREs, rather than the 15% rate for small businesses.13
• Aggregation: QREs and base amounts are aggregated across all members.1
• Caps: The $2,000,000 annual limit applies to the entire group, not each individual member.1

Flow-Through Entities (FTEs)

Michigan’s treatment of FTEs (partnerships, S-Corps, LLCs) is unique.1 The credit is claimed by the FTE against its withholding tax requirements.2 Crucially, the credit does not flow through to the partners or shareholders.1 The entity itself receives the benefit, which can be used to reduce periodic withholding payments as soon as the tentative claim adjustment notice is issued.2 A member of an FTE that submits a claim is expressly prohibited from claiming any portion of that credit on their individual return.4

The University Collaboration Bonus

To further incentivize Excess QREs in high-tech research, Michigan offers an additional bonus for partnerships with in-state research universities.1 This bonus is calculated as an extra 5% on the portion of QREs incurred through a written agreement with a Michigan public university or an independent non-profit research institute.1

• Scope: The bonus applies to the qualifying expenses tied to the collaboration, whether they are part of the base amount or the excess.5
• Cap: The bonus is limited to $200,000 per taxpayer per year, separate from the primary $250,000 or $2,000,000 caps.1
• Cumulative Benefit: For a small business with Excess QREs in a university setting, the total state credit rate can reach 20% (15% primary + 5% bonus).9

Comprehensive Case Study: Automotive Innovation Corp (AIC)

The following example illustrates the complex interplay of base amount calculation, excess QRE tiers, and university collaboration for a mid-sized Michigan manufacturer.

AIC Financial Profile:

• Entity Status: Large Business (450 employees).
• Historical Michigan QREs:

• 2022: $1,200,000
• 2023: $1,500,000
• 2024: $1,800,000

• 2025 Michigan QREs: $3,000,000 (Total).
• University Collaboration: AIC partnered with the University of Michigan on a $500,000 sub-project in 2025.

Step 1: Establish the Base Amount

The base amount is the average of the three prior years:

$$\text{Base Amount} = \frac{\$1,200,000 + \$1,500,000 + \$1,800,000}{3} = \$1,500,000$$

Step 2: Determine Excess QREs

Subtract the base from the current year total:

$$\text{Excess QREs} = \$3,000,000 – \$1,500,000 = \$1,500,000$$

Step 3: Calculate the Primary Credit

AIC is a large business, so it uses the 3% base and 10% excess rates:

• Base Tier Credit: $\$1,500,000 \times 0.03 = \$45,000$
• Excess Tier Credit: $\$1,500,000 \times 0.10 = \$150,000$
• Primary Credit Total: $\$195,000$

Step 4: Apply the University Bonus

The 5% bonus applies to the $500,000 university portion:

• Collaboration Bonus: $\$500,000 \times 0.05 = \$25,000$

Step 5: Final Tentative Claim

• Total Unadjusted Credit: $\$195,000 + \$25,000 = \$220,000$
• Check Against Cap: $220,000 is well below the $2,000,000 cap for large businesses.1

AIC will submit this $220,000 tentative claim by April 1, 2026. If statewide claims for large businesses reach $150 million but only $75 million is available for that group, AIC’s adjusted credit would be reduced by 50% to $110,000.6

Strategic Implications of HB 4961 Decoupling

The value of the Michigan R&D credit is significantly amplified by the state’s decision to decouple from federal Section 174 expense treatment.2 Under HB 4961, Michigan requires businesses to amortize their domestic research expenses over five years.2 This creates a “tax drag” where companies pay higher state taxes in the years they are making their heaviest investments.2

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Because the Michigan R&D credit is refundable, it provides a direct cash infusion that helps offset the cash flow deficit caused by mandatory amortization.1 For many taxpayers, the credit is the only mechanism available to restore the tax benefits lost due to the state’s decoupling from federal expensing rules.2

Economic Outlook and Conclusion

The Michigan Research and Development tax credit, with its heavy emphasis on Excess QREs, is a sophisticated economic instrument designed for the modern innovation economy. By creating a high-percentage tier for incremental spending—up to 15% for small businesses—Michigan has positioned itself as one of the most attractive states for startups and high-growth technology firms.4 The inclusion of a university collaboration bonus and a fully refundable structure ensures that early-stage manufacturers with limited tax liability can still access the capital needed to scale their operations.1

However, the administrative burden of this credit is high. The requirement for calendar-year reporting, the mandatory tentative claim process, and the potential for statewide proration mean that businesses must integrate R&D tax planning into their core financial strategy.2 Taxpayers who fail to track Michigan-specific costs with precision or who miss the strict March 15/April 1 deadlines will find themselves at a significant competitive disadvantage, especially as they navigate the higher state tax burdens imposed by Section 174 amortization.2 Ultimately, the “Excess QRE” model succeeds by rewarding the growth of innovation, ensuring that Michigan’s $100 million investment yields a tangible expansion of its technological capabilities and high-paying job market.5

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