Idaho keeps its research and development credit simple compared to many states, with no application process, no annual funding cap, and a credit that closely tracks the federal model. That simplicity makes it an easy credit for research active businesses to overlook, even though it can meaningfully reduce Idaho income tax liability over time.
How the Credit Works
Idaho’s Credit for Research Activities Conducted in This State, established under Idaho Code Section 63-3029G, is a nonrefundable credit against Idaho income tax for businesses increasing research activities within the state. The credit follows the same definitions used in the federal research credit, including qualified research expenses and qualified research under IRC Section 41, except that the research, expenses, and gross receipts used to calculate the credit must all be sourced within Idaho.
Idaho does not allow taxpayers to use the federal alternative simplified credit or alternative incremental credit methods. Instead, the credit is calculated using Idaho’s own base amount methodology, and new or research intensive companies can make an irrevocable election to be treated as a start up company for purposes of that calculation, regardless of whether they’d otherwise meet the federal start up test.
Credit Amount
The credit equals the sum of 5% of the excess of qualified research expenses conducted in Idaho over the base amount, plus 5% of basic research payments for basic research conducted in Idaho.
Nonrefundable, With a Long Carryforward
Because the credit is nonrefundable, it can only reduce tax liability down to zero and cannot generate a cash refund. However, unused credit can be carried forward for up to 14 taxable years, and when multiple years of credit are available, the oldest credits are applied first. For combined groups of corporations, credit earned by one member but not used can be shared with other members of the group.
Who’s Claiming It
Idaho’s research base spans a wide range of industries, reflecting its manufacturing heritage alongside a growing technology and life sciences presence. Common claimants include:
- Advanced manufacturing, including electronics, metals and alloys, and industrial automation
- Semiconductors
- Food processing and agriculture, including product formulation and processing technique development
- Medical devices and pharmaceutical development
- Software and engineering services
What This Means for Your Business
Because Idaho’s credit is straightforward and automatic rather than application based, the real opportunity lies in making sure qualified research expenses are properly identified, sourced to Idaho, and documented well enough to withstand scrutiny. Given the credit is nonrefundable, businesses with limited current tax liability should also plan around the 14 year carryforward rather than assuming the benefit is lost.
CSSI helps businesses identify and defend tax savings through detailed, engineering based studies. If you’d like to know whether your Idaho operations qualify, request a free analysis to get started.
FAQ: Idaho R&D Tax Credit
How is Idaho’s R&D credit calculated?
As the sum of 5% of qualified research expenses in Idaho that exceed a base amount, plus 5% of basic research payments for research conducted in Idaho.
Does Idaho allow the federal alternative simplified credit method?
No. Idaho requires its own base amount calculation and does not permit the federal alternative simplified credit or alternative incremental credit methods.
What is the start-up election?
New or research intensive companies can make an irrevocable election to be treated as a start-up company when calculating their base amount, which can increase the value of the credit even if they wouldn’t otherwise qualify under the federal start-up test.
Is the credit refundable?
No. It’s nonrefundable and can only reduce Idaho tax liability to zero. It cannot generate a cash refund.
Can unused credit be carried forward?
Yes, for up to 14 taxable years, with the oldest credits applied first.
Is there an application process or annual cap on this credit?
No. Unlike some states, Idaho’s R&D credit is claimed directly on the tax return without a separate application, and there is no statewide funding cap.
Which industries typically claim this credit in Idaho?
Advanced manufacturing, semiconductors, food processing and agriculture, medical devices and pharmaceuticals, and software and engineering services are common claimants.
How do I know if my business qualifies?
The best way to find out is through a professional analysis of your research activities and expenses. CSSI offers a free analysis to help determine eligibility and estimate potential savings.
