How much of Michigan's R&D credit comes back as cash?

A business qualifies only if its Michigan qualified research expenses exceed its base. Once past that gate, the credit is refundable under MCL 206.677, so a company with no Michigan tax still receives it. Headcount decides which rate and which cap apply: fewer than 250 employees earns 15 percent above the base with a $250,000 cap, and 250 or more earns 10 percent above the base with a $2 million cap.

Entity type decides where the credit lands. A C corporation claims it against the corporate income tax. A pass-through entity claims it against Michigan payroll withholding tax under MCL 206.717, which gives an LLC or S corporation with Michigan employees a way to use it. The credit cannot be assigned or transferred.

The formula is 3 percent of Michigan QRE up to the base plus 15 or 10 percent of QRE above it. Research done with a Michigan research university under a written agreement earns an extra 5 percent, capped at $200,000. The statewide cap is $100 million, and when claims exceed it Treasury prorates every claim. For 2025 expenses the factors were 59.88 percent for small claimants and 50.96 percent for large ones.

Illustrative example. A pre-profit SaaS company with 40 employees has $1,500,000 of Michigan QRE in a year and a base of $1,000,000. The credit is 3 percent of $1,000,000 ($30,000) plus 15 percent of the $500,000 above the base ($75,000), or $105,000, under the $250,000 cap. Applying the 2025 small-claimant factor of 59.88 percent gives $62,874 of certified credit. Future years will use whatever factor Treasury sets for that year.

Michigan requires a tentative claim to the Department of Treasury. For 2025 expenses the claim was due April 1, 2026. For 2026 and later expenses it is due March 15 of the following year, so calendar 2026 research is claimed by March 15, 2027.

Expenses are measured by calendar year even for a company with a fiscal tax year. A fiscal-year filer has to cut its research records at December 31 to build the claim, which is easy to miss if the books close in June.

Because the credit is refundable, the certified amount that exceeds your tax is paid out rather than banked. What you lose is the difference between the formula and the certified figure: the amount over the $250,000 or $2 million cap, and the share removed by proration. In the example above, that difference is $42,126. Plan cash flow on the prorated figure, and treat the formula amount as the upper bound.

The tentative claim has to reflect real Michigan research spending, split correctly between the base and the excess. Those numbers rest on federal Section 41 qualified research, so the four-part test analysis and wage detail behind the federal credit are what support the Michigan check.

R&D Binder produces the federal Section 41 documentation from your commit history and payroll. Your CPA files the tentative claim and the return, and whether your facts qualify is your CPA's call.

• Michigan's R&D credit (full overview)
• Michigan R&D credit rate
• Michigan vs the federal credit
• The Section 41 four-part test
• What is a qualified research expense (QRE)?
• Form 6765 and Section G
• Connecticut R&D credit
• Delaware R&D credit
• Iowa R&D credit

• Michigan Compiled Laws 206.677 (research and development credit) - Michigan Legislature
• Michigan Compiled Laws 206.717 (research and development credit, withholding tax) - Michigan Legislature
• Michigan Department of Treasury, Research and Development Credit Proration Notice for credits based on 2025 expenses (April 24, 2026) - Michigan Department of Treasury
• BDO, Michigan issues detailed guidance on claiming refundable R&D credit (April 2, 2026) - BDO USA
• Plante Moran, Michigan R&D tax credit proration notice issued (May 2026) - Plante Moran