Maine R&D Tax Credit Summary

R&D Tax Credit Available:


Eligible Entities:

C-Corporations, S-Corporations, LLCs, Partnerships

Deadline for Tax Filing:

Due with Maine Tax Return

Data Required to Compute Credit:

  • Claim Period Qualified R&D Expenses (QREs)
  • QREs for Prior 3 Years

Credit Carryforward:

15 years

R&D Credit Summary:

The Maine research credit equals:

  • 5% of the excess qualified research expenses over the previous three-year average; plus
  • 7.5% of basic research payments (relating to research performed by qualified universities or scientific research organizations).

Special Notes:

  • For corporations, the credit is limited to 100% of the first $25,000 in income tax determined before other credits, plus 75% of the tax amount in excess of $25,000
  • The credit cannot be carried back, but can be carried forward for up to 15 years
  • "Super Credit" for Substantially Increased R&D Activities was repealed for tax years beginning on or after January 1, 2014
Research Tax Credit
Important Links and Forms

Maine DECD

Maine Worksheet

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