2027 Alaska Tax Deadlines

Last updated: July 29, 2026

Key Alaska tax dates at a glance

This block is the single date reference for 2027 Alaska filing, payment, and extension planning.

• No Alaska Individual income tax return: Alaska does not impose a state Individual income tax for 2027.
• April 15, 2027: First quarterly Corporate estimated payment, if required.
• June 15, 2027: Second quarterly Corporate estimated payment, if required.
• September 15, 2027: Third quarterly Corporate estimated payment, if required.
• December 15, 2027: Fourth quarterly Corporate estimated payment, if required.
• March 31, 2028: Oil and gas production tax filing and payment deadline.
• April 30, 2028: Mining License Tax return deadline for calendar-year filers.
• May 18, 2028: Alaska Form 6000 Corporate income tax return and payment deadline for calendar-year 2027 C Corporations.
• November 15, 2028: Extended Alaska Corporate income tax filing deadline for calendar-year 2027 filers, file only.

When are Alaska business taxes due in 2027?

Alaska has no state Individual income tax deadline for 2027 returns, but Alaska business income tax and specialty-tax deadlines still matter. Calendar-year C Corporations, resource-industry taxpayers, and businesses with local obligations should calendar Alaska filing, payment, extension, and estimated-payment rules alongside the federal schedule.

Instead tax AI helps tax teams keep Alaska's no-Individual-income-tax rule, specialty-tax deadlines, and business filing dates visible in one practical execution calendar instead of a generic state deadline checklist.

What are Alaska Corporate Income Tax requirements?

Alaska imposes a graduated Corporate income tax on C Corporations, with rates ranging from 0% to 9.4% of Alaska-apportioned taxable income. C Corporations report on Form 6000, the Alaska Corporation Net Income Tax Return.

Filing requirements include:

• Complete Form 6000, Alaska Corporation Net Income Tax Return.
• File within 30 days of the federal corporate return due date; for calendar-year 2027 filers, Alaska's return and payment deadline is May 18, 2028.
• File even if no tax is due; small corporations with zero taxable income must still file a complete return.
• Make quarterly estimated payments if the corporation expects to owe more than $500.
• Use the federal extension to extend the Alaska filing deadline. For calendar-year 2027 filers, the extended Alaska Corporate filing deadline is November 15, 2028. The extension is to file, not to pay.

Which Alaska specialty business tax deadlines apply for 2027?

Beyond Corporate income tax, several Alaska industries are subject to specialty taxes with their own deadlines and compliance requirements. Tax teams should confirm the exact return, payment method, and filing channel with the Alaska Department of Revenue before filing.

When is the Alaska Fisheries Business Tax due?

Alaska imposes a Fisheries Business Tax on businesses engaged in fishing activities. Due dates vary based on the specific fishing operation and licensing requirements, so taxpayers should confirm the deadline applicable to their operation with the Alaska Department of Revenue.

When is the Alaska Oil and Gas Production Tax due?

Oil and gas production companies must file and pay production taxes by March 31, 2028. This tax applies to the production value of oil and gas extracted within Alaska.

• Complete the appropriate production tax returns.
• File through Alaska Department of Revenue systems.
• Pay by March 31, 2028.
• Use electronic filing where required for larger operations.

When is the Alaska Mining License Tax due?

Mining operations in Alaska must file Mining License Tax returns by April 30, 2028, for calendar-year filers. This tax applies to mining activities and mineral extraction within the state.

Do Alaska pass-through entities file separate state income tax returns?

Alaska does not require a separate state income tax return for S Corporations and Partnerships solely because Alaska has no state Individual income tax. These entities generally file federal returns and should review Alaska specialty taxes if their activity falls into a specific Alaska tax program, such as fisheries, mining, oil and gas, or another regulated industry.

Does Alaska have an Individual income tax deadline?

No. Alaska does not impose a state Individual income tax, so there is no Alaska Individual income tax return deadline or Alaska Individual extension deadline for 2027 returns.

Alaska residents may still need to file federal Individual income tax returns, report federally taxable items, manage local tax obligations, and consider Permanent Fund Dividend tax treatment. The Alaska state page should not imply that Individuals have an Alaska Form 1040-equivalent filing obligation.

What Alaska local and PFD considerations matter?

Alaska's Permanent Fund Dividend can affect residency analysis and is generally subject to federal income taxation even though Alaska does not impose a state Individual income tax. Local jurisdictions may also impose sales taxes, property taxes, special assessments, or business license fees.

Tax professionals should separate Alaska state income tax, local tax, federal reporting, and PFD considerations so clients do not confuse no state Individual income tax with no Alaska-related tax planning.

What Alaska-specific rules should tax teams watch for 2027?

• No Individual income tax: Alaska does not impose a state Individual income tax, so the Alaska calendar should not include an Individual state return or Individual state extension deadline.
• Corporate filing still matters: C Corporations report Alaska Corporate income tax on Form 6000 and should confirm their filing, payment, attachment, and extension requirements.
• Specialty industry taxes can drive deadlines: Fisheries, oil and gas, mining, and other Alaska-specific business activities may create separate filing and payment obligations.
• PFD planning is separate from state income tax: The Permanent Fund Dividend may affect federal income reporting and residency planning, even though Alaska has no state Individual income tax.
• Local tax exposure still exists: Municipal sales taxes, property taxes, special assessments, and business license fees may apply depending on location and activity.

For complex Alaska planning, use a qualified advisor or the accounting firm directory to find professional support.

Tax-professional context: Alaska's unique tax environment creates specific planning opportunities and compliance considerations for tax professionals working with Alaska clients.

Residency Planning Opportunities: Alaska's lack of state income tax makes it an attractive state for tax planning purposes, particularly for: High-income Individuals considering residency changes Retirees seeking tax-friendly retirement locations Business owners evaluating state tax burdens

Multi-State Tax Considerations: Alaska residents with income from other states must navigate: Other states' tax filing requirements Credit calculations for taxes paid to other states Nonresident return obligations in other jurisdictions

Business Formation Benefits: Alaska offers several advantages for business formation: A graduated 0% to 9.4% State Corporate income tax on C Corporations (Form 6000) No State Individual income tax for owners, while C Corporations still need an Alaska corporate income tax review Focus on specialty taxes related to natural resource industries

Specialty Industry Compliance: Alaska's economy relies heavily on natural resources, creating unique compliance requirements for: Oil and gas operations Commercial fishing enterprises Mining and mineral extraction Tourism and hospitality businesses

Sources

• Alaska Department of Revenue, Tax Division - Personal Income
• Alaska Department of Revenue, Tax Division - Corporate Income Tax Forms
• Alaska Department of Revenue, Tax Division - Tax Forms and Program Guides
• Alaska Permanent Fund Dividend Division

Alaska corporate tax deadlines for industry filings

Alaska deadline work is concentrated in corporate income tax, resource-sector filings, fishery assessments, and multi-state entity calendars. Instead's AI-driven tax platform gives teams one place to connect state rules, research, and workflow ownership.

Use filing for return execution, multi-entity views for complex groups, and research tools to keep Alaska-specific rules close to the work. Built for tax professionals who want a better tax operation system to manage compliance and advisory work for clients.