Alaska Administrative Code 15 AAC 20.145

Alaska Administrative Code (AAC) 15 AAC 20.145 is the administrative regulation through which Alaska adopts federal tax credits, including the Research and Development (R&D) credit, into its state tax framework. The core meaning is that the state allows a credit equal to 18% of the apportioned federal R&D tax credit amount for corporate taxpayers.

This framework mandates that corporations first qualify for the federal R&D credit and then apply Alaska’s unique statutory limitations and corporate income tax apportionment rules to determine the final, usable state tax benefit.

The Regulatory Framework: Credits Adopted by Reference

The Alaska R&D credit is unique in that it is not a standalone state incentive but a tax benefit derived entirely from the federal Internal Revenue Code (IRC). The administrative rule 15 AAC 20.145 formalizes this derivative relationship.

15 AAC 20.145 in Context: The Administrative Mechanism for Credit Adoption

The Alaska Administrative Code (AAC) is the repository for the regulations governing all Alaska agencies, updated quarterly. Within Title 15 (Revenue), Chapter 20 (Alaska Net Income Tax), Article 2 covers Corporate Net Income Tax and Credits. 15 AAC 20.145 is specifically titled “Credits adopted by reference”.

This designation establishes the mechanism for incorporating federal tax policy into Alaska’s corporate income tax regime. By adopting credits by reference, the Alaska Department of Revenue (DOR) acknowledges and accepts credits allowed under the IRC, including the federal General Business Credit defined under IRC § 38, which encompasses the federal R&D tax credit found in IRC § 41.

A fundamental consequence of this regulatory approach is the absolute requirement for federal qualification. A taxpayer seeking the Alaska R&D credit must first calculate and prove eligibility for the federal R&D credit, typically documented using Federal Forms 6765 and 3800. Furthermore, the definition of Qualified Research Expenses (QREs) used to establish the credit base for the Alaska return must be identical to the definition used for federal purposes under IRC § 41.

The reliance on federal law through administrative adoption means that Alaska’s state tax planning must be constantly reactive to legislative changes in Washington D.C. If the U.S. Congress amends the rules governing QRE capitalization (e.g., changes under IRC § 174) or modifies the federal credit calculation methodologies (e.g., adjusting the rate for the Regular Research Credit or the Alternative Simplified Credit), those modifications immediately alter the prerequisite “amount of credit determined for federal income tax purposes.” Consequently, even if state statutes and administrative rules remain entirely static, the monetary value of the Alaska R&D credit changes, imposing a continuous need for compliance synchronization between federal and state tax reporting.

Statutory Authority and Limitation: Linking the Code to AS 43.20.021(d)

While 15 AAC 20.145 enables the adoption of the credit, the specific limitations governing its value are established in state statute: Alaska Statute (AS) 43.20.021(d).

This statute imposes a dual limitation on all credits adopted by reference for corporations:

The 18% Cap: The credit is limited to eighteen percent (18%) of the amount determined for federal income tax purposes.

Apportionment: This 18% limit is applied only to the credit amount that is deemed attributable to Alaska.

The statute explicitly notes that this 18% limitation does not apply to a special industrial incentive tax credit under AS 43.20.042. This carve-out emphasizes the prioritization of localized Alaska incentives over credits derived from the federal structure, underscoring the secondary nature of the R&D benefit.

The legal interdependence between the administrative code and the statute defines the full scope of the R&D credit program.

Authority	Citation	Role in Alaska R&D Credit	Significance
State Statute (Limitation)	AS 43.20.021(d)	Establishes the 18% maximum utilization rate and the apportionment requirement.	Defines the maximum potential dollar value.
Administrative Code (Adoption)	15 AAC 20.145	Adopts federal credits (IRC § 38/§ 41) into the state calculation base.	Enables the credit calculation process.
Federal Statute (Basis)	IRC § 41	Defines QREs and the pre-apportioned credit calculation.	Determines eligibility and the starting monetary base.
Compliance Guidance	Alaska Form 6390	Operationalizes the limitation and apportionment rules; dictates credit ordering.	Mandatory compliance and utilization sequence.

The Alaska R&D Tax Credit: Calculation and Limitation Rules

The actual value of the Alaska R&D tax credit is determined through a series of mandated calculations that incorporate the federal base, state apportionment, and the statutory cap.

The Mechanics of the 18% Statutory Cap

The 18% cap, applied to corporations, is a distinct feature of Alaska’s federal-based credit system. This limitation positions the Alaska credit as a partial subsidy of the federal benefit, designed to provide a dollar-for-dollar offset against Alaska tax liabilities.

Crucially, the 18% rate is applied only after the federal credit amount has been adjusted based on the company’s economic footprint within Alaska through the use of the state’s apportionment formula. This sequential application—apportionment first, then limitation—is mandated by the compliance forms issued by the DOR.

Apportionment Requirement: Determining the Alaska Attributable Share

For multi-state corporations, the definition of the credit “attributable to Alaska” is central to the compliance process. This determination relies entirely on the corporation’s general income tax apportionment factor, which measures the proportional extent of the company’s business activity within the state.

Corporations, including S corporations and other entities such as LLCs and Partnerships (but excluding sole proprietorships), that derive taxable income from business activities both in and outside Alaska must calculate this factor.

A significant feature of the Alaska R&D credit framework is the location neutrality regarding the research activity itself. Qualified activities (QREs) are explicitly not required to be conducted within Alaska to qualify for the state credit, provided they were conducted within the United States, meeting the requirements of IRC § 41.

This policy choice, which ties the R&D credit benefit directly to the corporation’s broader corporate apportionment factor, indicates a state policy designed to reward companies with large markets or significant economic footprints in Alaska. If the state’s primary goal were to stimulate localized R&D employment or property investment, the credit formula would likely incorporate a factor measuring Alaska-specific QRE payroll or property. By focusing solely on the general corporate apportionment factor, the benefit aligns with the generation of corporate income sourced to the state, regardless of where the research labs are physically located.

State Revenue Office Guidance: Compliance and Ordering

The administrative implementation of 15 AAC 20.145 is executed through specific guidance from the Alaska Department of Revenue (DOR), primarily the instructions for Alaska Form 6390.

Alaska Form 6390: The Gateway to Federal-Based Credits

Alaska Form 6390, titled “Alaska Federal-Based Credits,” is the mandatory compliance mechanism for claiming the R&D credit. Companies must file Form 6390 along with their state tax returns (Form 6000, 6100, or 6150). The purpose of this form is to accurately “order and limit federal-based credits, on an as-if Alaska basis”.

The form guides the taxpayer through translating the federal R&D credit base into the allowed Alaska credit value. The process begins with the company entering its Federal General Business Credit from a non-passive activity, derived from Federal Form 3800.

Operational Steps from Form 6390 Instructions

Form 6390, Part I, dictates the operational steps for determining the final limited credit:

1. Total Current Federal Credit Applicable to Alaska (Line 5): The taxpayer determines the full federal credit available (based on IRC § 41 calculations).

2. Apportionment Factor (Line 6): The calculated Alaska apportionment factor is entered (the subject of 15 AAC 20.610).

3. Apportioned Federal Credit Amount (Line 7): Line 5 is multiplied by Line 6, establishing the portion of the federal credit considered “attributable to Alaska.”

4. Total Current Apportioned General Business Credit (Line 8): Line 7 (the apportioned federal credit) is multiplied by the statutory rate of 18%. This resulting figure represents the maximum R&D credit available for utilization in the current year, fulfilling the limitation set by AS 43.20.021(d).

Credit Utilization Sequence and Carryover Provisions

Form 6390, Part II, addresses how the calculated credit may offset the corporate tax liability.

The R&D credit is primarily a dollar-for-dollar offset against Alaska tax liabilities. The utilization sequence mandates that the credit must first be applied against the Alaska Regular Tax Liability. The regulations also allow the federal-based credits to offset the Alaska Alternative Minimum Tax (AMT). However, this offset is permitted only after any Alaska incentive credits (such as the special industrial incentive credit under AS 43.20.042) have been applied against both the regular tax and the net Alaska AMT. This credit ordering rule ensures that state-specific, high-priority incentives receive preferential utilization before the derived federal credit.

A valuable feature for R&D-intensive businesses is the credit carryover provision. Any unused portion of the federal-based credit—the $4,860 in the example below, if not fully used—may be carried back 1 year and carried forward for up to 20 years. This long carryover period provides substantial value assurance for start-up entities or those in multi-year development cycles that may incur QREs before generating significant Alaska taxable income.

Detailed Apportionment Analysis: Defining “Attributable to Alaska”

The calculation of the apportionment factor is arguably the most critical and complex variable in determining the final R&D credit value. This process is governed by administrative regulations, including 15 AAC 20.610.

Alaska’s Apportionment Methodology (15 AAC 20.610)

Alaska requires corporations with multi-state operations to assign business activity to the state using an equally weighted three-factor apportionment formula. Unlike many U.S. jurisdictions that have shifted to single sales factor apportionment (where only the sales ratio determines the apportionment percentage), Alaska maintains a balanced approach.

The formula averages three key factors: property, payroll, and sales.

Apportionment Factor = (Property Factor + Payroll Factor + Sales Factor) / 3

Each factor carries an equal weighting of one-third. This structure ensures that a corporation’s physical presence (property), its employment footprint (payroll), and its market reach (sales) all contribute equally to the final determination of the income, and by extension, the R&D credit base, “attributable to Alaska.”

Factor	Calculation Basis	Weighting
Property Factor	(Alaska Property / Total Property)	33.33% (1/3)
Payroll Factor	(Alaska Payroll / Total Payroll)	33.33% (1/3)
Sales Factor	(Alaska Sales / Total Sales)	33.33% (1/3)
Combined Apportionment Factor	Sum of the weighted factors divided by three	100%

Nuances of Factor Definitions and Sourcing

Accurate data gathering for each factor is essential, especially the sourcing of receipts. For financial entities, for example, 15 AAC 20.610 provides specific guidance. Loans or receivables and the receipts derived from them must be sourced to Alaska if the borrower or cardholder resides in the state. If receipts related to loans are not sourced to Alaska and are excluded by the taxpayer, the DOR retains the discretion to attribute that property or those receipts to the state if the exclusion is determined to inaccurately reflect the extent of the taxpayer’s activities in Alaska, particularly if the property pledged as security for the loan is located in the state.

This reliance on the general corporate apportionment factor for calculating the R&D credit creates a direct compliance linkage. Any corporate tax audit conducted by the DOR that targets the overall apportionment factor—such as challenging the valuation of in-state property, the sourcing of payroll, or the assignment of sales—constitutes an immediate, direct risk to the validity of the R&D tax credit claim. Because the R&D credit base is intrinsically tied to Form 6390, Line 6, any adjustment to the apportionment factor directly alters the amount subject to the 18% limitation. Therefore, taxpayers must defend their general corporate apportionment documentation with the same rigor used to document their federal QREs.

Comprehensive Example: Alaska R&D Tax Credit Calculation

The following example demonstrates the precise application of 15 AAC 20.145, AS 43.20.021(d), and the resulting calculations required on Form 6390.

Hypothetical Scenario Setup: Aurora Tech Innovations, LLC

Aurora Tech Innovations, an entity taxable as a corporation, conducts R&D nationally but has significant market penetration in Alaska.

Hypothetical Company (Aurora Tech Innovations) Financial Data

Metric	Value	Source
Current Year QREs (IRC § 41)	$1,200,000	Federal Calculation Basis
Calculated Federal R&D Credit (pre-limitation)	$180,000	Federal Form 6765 / 3800
Alaska Property Factor Ratio (1/3 weight)	15.0%	Internal Calculation
Alaska Payroll Factor Ratio (1/3 weight)	5.0%	Internal Calculation
Alaska Sales Factor Ratio (1/3 weight)	25.0%	Internal Calculation
Alaska Total Regular Tax Liability (AK Form 6390, Line 12a)	$40,000	Alaska Form 6000/6100
Alaska Incentive Credits Applied (AK Form 6390, Line 12b)	$5,000	Prior State Credit Claim

Step-by-Step Alaska Credit Determination

Step 1: Calculate the Alaska Apportionment Factor (AK Form 6390, Line 6)

The equally weighted three-factor formula is applied:

Apportionment Factor = (0.150 + 0.050 + 0.250) / 3 = 0.450 / 3 = 15.0%

– Apportionment Factor = 15.0%

Step 2: Determine the Apportioned Federal Credit (AK Form 6390, Line 7)

This calculation establishes the R&D credit base “attributable to Alaska” (AS 43.20.021(d)).

Apportioned Federal Credit = $180,000 × 0.150 = $27,000

– Apportioned Federal Credit = $27,000

Step 3: Apply the 18% Limitation (AK Form 6390, Line 8)

The statutory cap is applied to the apportioned amount.

Alaska R&D Credit = $27,000 × 0.18 = $4,860

– Maximum Alaska R&D Credit = $4,860

Step 4: Determine Credit Utilization Against Liability (AK Form 6390, Part II)

The credit is utilized against the regular tax liability after prior incentive credits are applied.

– Net Alaska Regular Tax after Alaska Incentive Credits (Line 12c): $40,000 – $5,000 = $35,000

– Since the maximum allowable credit ($4,860) is less than the Net Regular Tax Liability ($35,000), the full $4,860 is utilized in the current tax year. No carryover is generated in this scenario.

Calculation Step	Form 6390 Reference	Calculation Details	Result
1. Federal Credit Base	Line 5 (Input)	Calculated via IRC § 41	$180,000
2. Apportionment Factor	Line 6 (Input)	(15% + 5% + 25%) / 3	15.00%
3. Apportioned Federal Credit	Line 7	$180,000 × 0.1500	$27,000
4. Alaska R&D Credit (18% Limit)	Line 8	$27,000 × 0.18	$4,860
5. Net Regular Tax Available	Lines 12a – 12b	$40,000 – $5,000	$35,000
6. Credit Utilized	N/A	Lesser of Line 4 or Line 5	$4,860
7. Unused Carryover	N/A	$4,860 – $4,860	$0

Strategic Planning and Maximization

Effective planning under 15 AAC 20.145 requires tax professionals to execute a dual strategy: maximizing the federal credit base and meticulously defending the state apportionment factor.

Optimizing the Federal QRE Base

Because the Alaska R&D credit is strictly a percentage of the federal calculation, the highest priority must be placed on generating and defending the federal credit amount. Taxpayers should model both the Regular Research Credit (RRC) and the Alternative Simplified Credit (ASC) methods to determine which yields the larger federal credit base, as this immediately translates into a greater potential Alaska benefit.

Furthermore, although the research need not be conducted in Alaska, the underlying research expenses must strictly adhere to the federal four-part test: the expense must be for a qualified purpose (creating a new or improving a product), aimed at eliminating technical uncertainty, technological in nature, and part of a process of experimentation. Strict adherence to federal documentation standards for QREs is thus the prerequisite for any Alaska benefit.

Leveraging the Carryover Provision

The generous carryover provision, allowing the credit to be carried forward for up to 20 years and back for 1 year, is a vital planning tool for companies, especially those with high QREs in early operational years before substantial Alaska tax liability accrues. This carryover allows R&D-intensive firms to lock in tax benefits immediately, even if they cannot utilize the credit until many years later when they achieve higher profitability within the state.

Compliance Best Practices: Apportionment Defense

The unique equally weighted three-factor formula necessitates careful apportionment planning. Given that all three factors contribute equally (33.33% each), slight adjustments in any one component can dramatically alter the final credit value.

Taxpayers must focus on the meticulous sourcing of payroll and sales. For payroll, accurately determining where services are performed is critical, especially in Alaska where complex resource extraction or maritime operations may blur state boundaries. For receipts (sales), rigorous tracking of customer location and residency is paramount, particularly for financial and intangible goods, to comply with administrative rules that source certain receipts based on the location of the borrower or cardholder. A solid defense of the general apportionment factor is an indirect but essential defense of the R&D credit itself.

Final Thoughts: Navigating Alaska’s Derived Credit Landscape

Alaska Administrative Code 15 AAC 20.145 is the legal foundation for the Alaska R&D tax credit, functioning as a rule for the adoption of federal tax policies. This adoption subjects the federal credit (IRC § 41) to the stringent limitations of Alaska Statute AS 43.20.021(d), which imposes an 18% cap on the credit amount deemed attributable to Alaska.

This derived credit system imposes specific compliance requirements, primarily operationalized through Alaska Form 6390. The most complex aspect for multi-state entities is the mandated use of the equally weighted three-factor apportionment formula to determine the state’s proportional share of the federal credit base.

The overall architecture of the Alaska R&D tax credit prioritizes the economic footprint of the corporate taxpayer within the state, as measured by property, payroll, and sales factors, over the physical location of the research activity. Successful utilization of this credit requires comprehensive planning that integrates federal QRE optimization with rigorous defense of the corporate apportionment factor, all while adhering to the specific credit ordering rules and leveraging the long-term benefit of the 20-year carryforward provision.