April 2026: 0.98% (C- grade)
Michigan inventionINDEX April 2026: 0.98% (C- grade)
The inventionINDEX measures innovation output by comparing GDP growth with patent production growth.
Anything over C grade is positive sentiment; anything under C is negative outlook/sentiment. Using that sentiment, it is possible to observe trends over time, and also compare states/countries. In doing so, we can predict which states have the best chance to recover economically from the pandemic (or any other economic incident that may occur).
Michigan inventionINDEX Scores – Last 12 months
| Month | inventionINDEX Score |
| April 2026 | 0.98% |
| Mar 26 | 1.73% |
| Feb 26 | 0.85% |
| Jan 26 | 0.89% |
| Dec 25 | 1.49% |
| Nov 25 | 1.30% |
| Oct 25 | 1.46% |
| Sep 25 | 1.33% |
| Aug 25 | 1.30% |
| Jul 25 | 2.01% |
| Jun 25 | 1.26% |
| May 25 | 1.33% |
| Apr 25 | 1.68% |
The Michigan inventionINDEX score for April 2026 settled at 0.98 percent with a C-minus rating, signaling a period of reduced momentum compared to the previous month. While this represents a modest recovery from the year’s starting points in January and February, which hovered in the mid-to-high 0.80 percent range, it fails to recapture the brief surge seen in March 2026 at 1.73 percent. This recent fluctuation suggests a state of instability in the local innovation pipeline, as the index struggles to find a consistent foothold above the 1.00 percent threshold during the current fiscal cycle.
When placed against the broader 60-month historical backdrop, the current April performance is notably lackluster. Historically, the month of April has served as a stronger period for Michigan, with scores of 1.74 percent in 2021 and 1.68 percent in 2025. The 0.98 percent recorded this year stands as the lowest April performance in the five-year record. This is a far cry from the state’s historical peaks, such as the 3.09 percent A-plus rating achieved in September 2023 or the 2.97 percent high in October 2024. While the state is well clear of the anomalous negative score recorded in July 2023, the long-term trend reflects a current inability to sustain the high-performing A and B ratings that were more common in earlier years.
A higher grade on the inventionINDEX carries significant positive weight for the state’s economic and industrial reputation. When Michigan operates in the A or B ranges, it typically indicates a surge in patent activity, a robust venture capital environment, and high levels of research and development within the automotive and manufacturing sectors. Such performance levels foster an ecosystem that attracts top-tier engineering talent and encourages established corporations to deepen their investment in local facilities. This virtuous cycle of innovation not only boosts the state’s competitive edge but also ensures long-term economic diversification and resilience.
Conversely, the negative implications of a lower score, such as the current C-minus, point toward potential structural challenges. A falling index suggests a stagnation in intellectual property creation or a bottleneck in the transition from laboratory research to commercial application. If these lower ratings persist, they may trigger a period of brain drain where creative professionals seek more vibrant markets, and investors become increasingly risk-averse regarding local startups. Sustained performance below the historical average risks relegating the region to a reactive role in the global economy, making it essential to address the underlying factors that contribute to these periods of diminished inventive output.
Discussion:
In April, the Michigan inventionINDEX scored a negative sentiment which was lower than the previous year’s average and underperformed the downward trend for the year. This is similar to the prior 12 months, which experienced a slight downward trend.
As the economy continues to stabilize in the post-pandemic era, it remains uncertain whether any backlog of applications still exists or if the department has returned to normal processing timelines. The inventionINDEX could also be affected by lingering consequences from the pandemic, such as company closures, reduced workforces, and limited R&D capabilities, which may still be impacting current operations.
Learn More:
Are you thinking of patenting any of your bright ideas? Did you know your research work could be eligible for the R&D Tax Credit and you can receive up to 14% back on your expenses? To find out more, please check out our free online eligibility test.
Swanson Reed’s Michigan office provides R&D tax credit consulting and advisory services to Detroit, Grand Rapids, Warren, Sterling Heights, Ann Arbor, Lansing, Flint, Dearborn, Livonia, Troy, Westland, Farmington Hills, Kalamazoo, Wyoming, Rochester Hills, Southfield, Taylor, Pontiac, St Clair Shores and Royal Oak.
Feel free to book a quick teleconference with one of R&D tax specialists if you would like to learn more about R&D tax credit opportunities.
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Swanson Reed is the largest Specialist R&D tax credit advisory firm in the United States. With offices nationwide, we are one of the only firms globally to exclusively provide R&D tax credit consulting services to our clients. We have been exclusively providing R&D tax credit claim preparation and audit compliance solutions for over 30 years.
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What is the R&D Tax Credit?
The Research & Experimentation Tax Credit (or R&D Tax Credit), is a general business tax credit under Internal Revenue Code section 41 for companies that incur research and development (R&D) costs in the United States. The credits are a tax incentive for performing qualified research in the United States, resulting in a credit to a tax return. For the first three years of R&D claims, 6% of the total qualified research expenses (QRE) form the gross credit. In the 4th year of claims and beyond, a base amount is calculated, and an adjusted expense line is multiplied times 14%. Click here to learn more.
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