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Maine R&D Tax Credits

State and Federal Credits Available
5% Incremental Credit
Excess QREs over 3-year base
7.5% Basic Research Credit
Payments to qualified research orgs
15-Year Carryforward
Unused credits for 15 years
Credit Limits
Corps: 100% of 25k + 75% above; others capped at tax due

The Maine R&D Tax Credit, governed by 36 M.R.S. §5219-K and administered by the Maine Revenue Services, incentivizes businesses and individuals to invest in qualified research activities conducted within the state. This nonrefundable credit offsets Maine income tax liabilities for corporations, pass-through entities, individuals, estates, and trusts engaged in innovation, aligning closely with federal IRC §41 standards but limited to in-state expenditures.

5% Incremental Credit
Excess QREs over 3-year base
7.5% Basic Research Credit
Payments to qualified research orgs
15-Year Carryforward
Unused credits for 15 years
Credit Limits
Corps: 100% of 25k + 75% above; others capped at tax due

Key Highlights

  • 5% credit on qualified research expenses (QREs) exceeding the three-year average base amount
  • Additional 7.5% credit for basic research payments to qualified organizations, such as universities
  • Nonrefundable but carries forward for up to 15 years, providing long-term tax relief
  • Applies exclusively to research performed in Maine; no out-of-state activities qualify
  • Available to corporations, pass-through entities, individuals, estates, and trusts, with pass-through treatment
  • Cannot reduce tax liability below zero; subject to offset limitations based on tax due
  • For individuals and corporations with $25,000 or less of Maine income tax due, the credit is limited to the tax liability; any excess carries forward

Who Qualifies for the Maine R&D Tax Credit?

Credits are available to Maine taxpayers conducting qualified research activities in the state, as defined under IRC §41 but restricted to in-state efforts. Eligibility focuses on the nature of research and taxpayer type, ensuring alignment with state innovation goals in sectors like manufacturing, technology, and biotechnology.

Eligible Entities
  • C Corporation May claim both the regular and basic research credit
  • S Corporation Limited entity-level use; can pass credits to shareholders
  • Partnerships / LLCs Credits pass through to owners via Schedule K-1
Qualified Research Expenses (QREs)

Only expenses for research conducted in Maine qualify. Basic research payments to qualified organizations (e.g., universities under IRC §41(e)(1)(A)) are treated separately.

Category
Examples
Wages
Salaries for employees performing, supervising, or directly supporting qualified research
Supplies
Materials and prototypes consumed or used up in the research process
Contract Research
Payments to third-party contractors for qualified services
Basic Research Payments
Contributions to universities or scientific research organizations

How to Calculate the Maine R&D Tax Credit

Maine uses a single regular (incremental) method, based on a three-year average of prior QREs as the base—no alternative simplified credit (ASC) is available. Calculations apply only to Maine-sourced QREs and basic research payments. The State Tax Assessor may aggregate activities within controlled groups for consistency.

Regular Method
  • Determine Total Maine QREs: Sum all qualified in-state research expenses for the current tax year.
  • Compute Base Amount: Average QREs from the prior three taxable years. If a taxpayer has fewer than three years of QREs, the base effectively becomes the average of available years, which may be zero for new research filers.
  • Calculate Excess QREs: Current-year QREs minus the base amount (excess cannot be negative).
  • Apply Credit Rate:? 5% of the excess QREs.
  • Add Basic Research Credit: 7.5% of eligible basic research payments to qualified organizations.
  • Apply Limitations: For corporations, total credit cannot exceed 100% of the first $25,000 of tax due plus 75% of tax due over $25,000. For individuals and corporations with tax liability of $25,000 or less, the credit is limited to the tax liability itself; any excess carries forward.
Example Calculation
Assume a Maine C corporation with $1,200,000 in current-year QREs, a three-year average base of $800,000, and $50,000 in basic research payments.
Excess QREs = $1,200,000 - $800,000 =$400,000
Incremental Credit = 5% × $400,000 =$20,000
Basic Research Credit = 7.5% × $50,000 =$3,750
Total Credit =$23,750
Base Calculation for Maine R&D Tax Credit
  • Identify QREs conducted in Maine for the prior 3 tax years.
  • Compute average = (Year -1 QREs + Year -2 QREs + Year -3 QREs) / 3.
  • Apply as base amount (if no prior QREs, base = $0).
  • Ensure Maine-specific only; exclude non-Maine expenses or receipts.
Example Calculation
Prior Year -1 QREs =$900K
Year -2 =$700K
Year -3 =$500K
→ Base = ($900K + $700K + $500K) / 3 =$700K
If no prior: → Base =$0 (full current QREs qualify as excess)
Gross Receipts and Base Rules
  • Maine-Sourced Only: QREs and basic payments must relate to in-state activities; no federal data blending.
  • No Startup Provision: Uses actual prior-year averages (zero base for new businesses maximizes early credits).
  • Controlled Groups: Aggregated at the group level for base calculations, per IRC §41(f).

Maine-Specific Rules

Maine's R&D credit emphasizes sustained innovation through flexible carryforwards and pass-through mechanics, without caps on credit generation but with targeted offset limits. These rules support mid-sized manufacturers and tech firms, with historical annual claims around $2-4 million, based on state tax expenditure reports.

Long Carryforward Period

Unused credits carry forward for up to 15 years, allowing businesses to apply them against future tax liabilities as R&D investments mature into revenue. This extended window is ideal for cyclical industries, ensuring no loss of value from timing mismatches.

Pass-Through Treatment

For S corporations, partnerships, LLCs, trusts, and individual owners, credits flow directly to owners via Schedule K-1, proportional to ownership. No entity-level retention required, maximizing individual tax offsets. Combined reporting corporate groups allocate excess credits among members, subject to the same limitations.

No Startup Fixed-Base Election

Unlike federal rules, Maine relies on actual three-year QRE averages—no phased fixed-base percentage. New or low-prior-activity businesses benefit from a zero or low base, enabling full 5% credits on initial investments without artificial inflation.

Other Important Rules
  • In-State Research Only :All qualifying activities and expenses must occur within Maine borders; out-of-state subcontracts do not qualify.
  • No Annual Cap on Generation :Unlimited credit creation, though offset is limited to tax due (100%/75% tiers).
  • Audit and Recordkeeping :Maintain documentation for at least six years, consistent with Maine’s general record-keeping rules, and be prepared to provide additional support if MRS requests it.
  • No Refund Option : Strictly nonrefundable; excess over limitations carries forward only.
Long Carryforward Period

Unused credits carry forward for up to 15 years, allowing businesses to apply them against future tax liabilities as R&D investments mature into revenue. This extended window is ideal for cyclical industries, ensuring no loss of value from timing mismatches.

Pass-Through Treatment

For S corporations, partnerships, LLCs, trusts, and individual owners, credits flow directly to owners via Schedule K-1, proportional to ownership. No entity-level retention required, maximizing individual tax offsets. Combined reporting corporate groups allocate excess credits among members, subject to the same limitations.

No Startup Fixed-Base Election

Unlike federal rules, Maine relies on actual three-year QRE averages—no phased fixed-base percentage. New or low-prior-activity businesses benefit from a zero or low base, enabling full 5% credits on initial investments without artificial inflation.

Other Important Rules
  • In-State Research Only :All qualifying activities and expenses must occur within Maine borders; out-of-state subcontracts do not qualify.
  • No Annual Cap on Generation :Unlimited credit creation, though offset is limited to tax due (100%/75% tiers).
  • Audit and Recordkeeping :Maintain documentation for at least six years, consistent with Maine’s general record-keeping rules, and be prepared to provide additional support if MRS requests it.
  • No Refund Option : Strictly nonrefundable; excess over limitations carries forward only.

Maine R&D Tax Credits Case Study

A Maine-based biotechnology firm partnered with Strike Tax to claim state credits on in-house process improvements and university collaborations.

$125,000
total state R&D tax credits earned
60%
of wages qualified as QREs
$312,000
total R&D tax credits earned (federal + state combined)
Frequent Asked Questions

What is the Maine R&D tax credit?

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The Maine Research Expense Tax Credit provides a 5% credit on qualified research expenses exceeding a three-year average base, plus 7.5% on basic research payments to organizations like universities, per 36 M.R.S. §5219-K. It aligns with federal IRC §41 but applies only to in-state activities.

What activities qualify for Maine’s R&D tax credit?

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Eligible activities include developing or improving products, processes, techniques, formulas, or software through technological experimentation in Maine. Strike Tax reviews project documentation to confirm IRC §41 compliance, excluding routine testing or market research.

How much can my business save with Maine’s R&D tax credit?

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For $1 million in excess QREs, you could save $50,000 in state credits, plus federal benefits. Stack with Maine’s separate sales and use tax exemption on R&D equipment for added value. Use Strike Tax’s R&D Credit Calculator for a personalized estimate.

Are Maine R&D tax credits refundable for small businesses?

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No, credits are nonrefundable and cannot reduce tax below zero. However, unused portions carry forward for 15 years. Small businesses may leverage federal payroll tax offsets for cash flow. Strike Tax optimizes carryforwards for maximum utilization.

How do I apply for Maine’s R&D tax credit?

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Attach Maine’s Research Expense Tax Credit Worksheet and federal Form 6765 to your Maine return (Form 1040ME, 1040C-ME, 1041ME, or 1120ME, as applicable). Ensure contemporaneous records. Strike Tax handles documentation, calculations, and filing to ensure compliance.

Can Maine businesses claim both state and federal R&D credits?

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Yes, the same QREs qualify for both, allowing stacking for amplified savings. Maine's base uses a three-year QRE average, differing from federal four-year gross receipts method. Strike Tax coordinates claims to avoid double-counting.

Why is Maine’s R&D credit valuable for manufacturing companies?

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Manufacturers benefit from the 5% incremental rate on process innovations and 15-year carryforward, supporting capital-intensive R&D. With no generation cap, growing firms capture ongoing value. Strike Tax tailors claims for Maine's industrial base.

What is the base amount for Maine’s R&D credit calculation?

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The base is the average of your prior three years' Maine QREs (zero if fewer years). This actual-history approach favors consistent innovators. Strike Tax computes bases accurately, including controlled group aggregations.

How long can unused Maine R&D credits be carried forward?

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Up to 15 years, applied against future tax due under the same offset limits. This long horizon is a key advantage for startups and seasonal businesses. Strike Tax tracks carryforwards to prevent expiration.

Does Maine offer any alternative calculation methods for R&D credits?

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No, only the regular incremental method over the three-year base. No ASC or fixed-base election exists, keeping administration straightforward. Strike Tax ensures precise base tracking for optimal credits.

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