Alaska Form 6150 – Oil & Gas Corporation Net Income Tax Return

Last reviewed: 2025-11-12

Use the Alaska Tax Form Calculator Form alaska: Alaska Form 6150 – Oil & Gas Corporation Net Income Tax Return as a stand alone tax form calculator to quickly calculate specific amounts for your 2026 Alaska state tax return. Alternatively, you can use one of our Combined Federal and State Tax Estimators to quickly calculate your salary, tax, and take-home pay.

Alaska Form 6150 is the state’s primary income tax return for oil and gas corporations operating in Alaska. The form applies to C-corporations engaged in oil and gas production, pipeline transportation or upstream/downstream activities that generate taxable income attributable to Alaska. Because the oil and gas sector has unique tax rules, Form 6150 integrates several specialized schedules, including Schedule F (Alaska Income), Schedule D (Tax Computation), Schedule E (Other Taxes), and Schedule 6300 (Credits).

This calculator mirrors the computational structure of the official 6150 and focuses on the numerical elements only. Corporate identity sections, disclosures, elections and attachments are not included and must be completed on the final state-filed copy. The core goal is to automate computation of taxable income, tax liability, credits applied and final payment or refund.

How to Complete Alaska Form 6150

Use the following guidance to complete the computational lines of Form 6150:

Report Alaska income (Line 1): Enter the Alaska-apportioned income from Schedule F, line 4. This represents income attributable specifically to Alaska under the state’s apportionment rules.
Apply Alaska NOL carryforward (Line 2): If your corporation has unused Alaska NOLs from prior years, enter the amount utilized for the current year. Attach the NOL schedule as required.
Compute taxable income (Line 3): The calculator automatically adds lines 1 and 2.
Enter tax from Schedule D (Line 4): Alaska’s corporate tax for oil and gas businesses is computed using Schedule D. Input the total tax due from that schedule.
Include other taxes (Line 5): Certain oil and gas activities may trigger additional business-specific taxes reported on Schedule E.
Total tax (Line 6): Automatically computed as the sum of lines 4 and 5.
Credits (Lines 7–8): Alaska offers a range of incentive and federal-based credits for oil and gas exploration, development and investment. Enter Schedule 6300 credits and Form 6390 credits.
Net tax (Line 9): Computed automatically by subtracting credits from total tax.
Payments (Line 10): Include estimated tax payments, extension payments and prior-year overpayment credits.
Balance due or refund (Line 11): Automatically computed based on net tax minus payments.

Corporations must attach all supporting schedules, apportionment worksheets and credit certificates when filing their official state return. This calculator provides the numerical framework only.

Alaska Form 6150 — Oil & Gas Corporation Net Income Tax Return
1	Alaska income (loss) from Schedule F, line 4
2	Alaska net operating loss utilized (carryover) – attach schedule
3	Alaska taxable income (loss) before credits. Add lines 1 + 2
4	Alaska income tax from Schedule D, line 2
5	Other taxes from Schedule E, line 7
6	Total tax. Add lines 4 + 5
7	Incentive credits applied against tax (Schedule 6300, line 49)
8	Federal-based credits (Form 6390, line 33)
9	Net Alaska income tax. Subtract lines 7 & 8 from line 6
10	Payments: total estimated tax payments, extension payment, overpayment credited, etc.
11	Balance due (or overpayment) (line 9 minus line 10)

Alaska Oil & Gas Corporation Tax Overview

Oil and gas corporations are subject to Alaska corporate income tax due to substantial economic activity in the state, including exploration, production, pipeline transport and refinement. Alaska uses a combination of industry-specific rules and standard corporate tax provisions, requiring corporations to file specialized schedules that reflect the unique nature of the sector’s production and cost structure.

Form 6150 also interacts with Alaska’s extensive credit system, which includes exploration and development incentives, investment credits, LNG facility credits and various federal-based credits that reduce overall tax liability. Because credits may be limited, carried forward or subject to certification, corporations should rely on accurate documentation and supporting certificates.

The state emphasizes accurate apportionment to ensure that only activity attributable to Alaska is taxed. Corporations operating across states or internationally must maintain detailed apportionment records and ensure that Schedule F is completed correctly, as it forms the basis of taxable income on Form 6150.

Last reviewed: 2025-11-12: If you believe this form requires an update, please contact us.

Additional Resources

Form 6150 plays a central role in the compliance requirements for oil and gas corporations operating in Alaska. Completing it accurately ensures proper calculation of tax liability, correct application of credits and clear alignment with state apportionment rules. Always consult the latest instructions from the Alaska Department of Revenue and maintain copies of all supporting schedules and certificates.

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Frequently Asked Questions

Do Anchorage or Fairbanks tax income?

No. Neither Anchorage nor Fairbanks taxes individual wages. Anchorage historically debated implementing a municipal income tax as an alternative to property taxes, but such measures have never passed. Fairbanks relies on property taxes and user fees. As a result, residents and workers in both cities benefit from Alaska’s statewide 0% income-tax policy with no additional local payroll deductions.

If I move to Alaska mid-year, do I immediately stop paying state income tax?

Yes. Once you become an Alaska resident, no state income tax applies to wages earned from that point forward. You must still file a part-year return for the state you moved from, reporting income earned before establishing Alaska residency. Alaska requires no part-year return, residency declaration or supplemental state forms. Your federal obligations remain unchanged, but Alaska offers instant relief from state withholding the moment your employer updates your work location or residency information.

If I open an LLC in Alaska, will I owe any state income tax?

For single-member LLCs treated as disregarded entities and traditional pass-through entities, Alaska imposes no state income tax at the individual or pass-through level. The income flows through to your federal return, and no Alaska filing is required. However, certain corporations—including C-corporations operating in Alaska—*are* subject to Alaska corporate income tax. LLCs electing C-corp treatment must follow those rules. For most small business owners, Alaska remains one of the most tax-advantaged jurisdictions in the United States.

How do pre-tax benefits like HSAs or FSAs affect take-home pay in Alaska?

HSAs, FSAs, dependent care FSAs and similar pre-tax benefits reduce federal taxable wages and often reduce FICA taxes. Alaska’s lack of a state tax means there is no second layer of savings or rules to track. As a result, tax planning involving pre-tax benefits is cleaner and easier for Alaska residents, since all tax effects occur at the federal level.

Where can I access a structured version of Alaska Form 6220?

A structured and calculator-ready version of the form is available at AK-6220 Underpayment Calculator, including line-by-line fields and automated penalty estimation.

Important Notes

All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.