Alaska Form 6240 – Payment Voucher for Corporation Net Income Tax
Last reviewed: 2025-11-12
Use the Alaska Tax Form Calculator Form AK-6240: Alaska Form 6240 – Payment Voucher for Corporation Net Income Tax 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.
Form AK-6240 is the official payment voucher used by corporations to remit payments toward Alaska's Corporation Net Income Tax. Because Alaska does not impose individual income tax, the corporate tax system relies on structured payment vouchers like Form 6240 to ensure proper crediting of estimated taxes, extension payments, and balances due. This reference copy mirrors the layout of the official form and helps filers understand which details must accompany a mailed payment.
This form does not perform any tax calculations. Instead, it provides a standardized way to submit payments so the Alaska Department of Revenue can match funds to the correct corporate account. Corporations filing Form 6000, 6100 or 6150 often use Form 6240 whenever tax is owed or when estimated quarterly payments are required.
How to Use Alaska Form 6240
Form 6240 accompanies a check or money order submitted to the Alaska Department of Revenue. It is used when:
- You are making a quarterly estimated tax payment.
- You need to remit a payment with an extension request.
- You must pay the balance due after filing Form 6000, 6100 or 6150.
- You are submitting a payment resulting from an audit adjustment or departmental billing.
This form does not calculate tax. Instead, the taxpayer supplies identifying information—corporate name, EIN, taxable year, payment type and amount. This ensures the payment is posted to the correct tax year, preventing misapplied payments or delays in crediting your corporate tax account.
| 1 | Corporation name (exact as on return) | |
| 2 | Employer Identification Number (EIN) | |
| 3 | Taxable year beginning | |
| 4 | Taxable year ending | |
| 5 | Payment type (check one: estimated tax, extension payment, bill, amended return payment) | |
| 6 | Payment amount enclosed ($) | |
| Make check or money-order payable to “Alaska Department of Revenue”. Mail to: TAX DIVISION, Alaska Department of Revenue, P.O. Box 110420, Juneau AK 99811-0420. Form 6240 is not an extension by itself. | ||
Important Notes
- Do not staple the payment, check or voucher together.
- Mailing address: Alaska Department of Revenue, Tax Division, P.O. Box 110420, Juneau, AK 99811-0420.
- Electronic payments may be available through the Alaska Department of Revenue; if paying electronically, Form 6240 is generally not required.
- This form does not extend the time to file by itself. If submitting an extension payment, you must still file the extension form or corporate return as required.
Using a voucher helps avoid posting errors—particularly for corporations with multiple subsidiaries, consolidated filers or those making mid-year estimated payments. Always keep a copy of the submitted voucher and check for your records.
Last reviewed: 2025-11-12: If you believe this form requires an update, please contact us.
Additional Resources
- Alaska Form 6000 – Corporation Net Income Tax Return
- Alaska Form 6100 – S Corporation Return
- Alaska Form 6150 – Oil & Gas Corporation Net Income Tax Return
- Alaska Form 6220 – Underpayment of Estimated Tax by Corporations
- Alaska Department of Revenue – Tax Division
This reference version of Form 6240 helps corporations ensure their payments are accompanied by accurate identifying information, reducing the risk of delays or misapplied tax payments.
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Frequently Asked Questions
Is FICA affected by Alaska residency?
No. FICA consists of Social Security (6.2%) and Medicare (1.45%), and these apply equally nationwide, regardless of state residency. Living in Alaska does not change your FICA contributions, eligibility, or credit accumulation. The only difference is that Alaska imposes no additional state payroll tax layers, so FICA is one of the few mandatory deductions you will consistently see on your paycheck.
Are electronic payments preferable to using Form 6240?
For most corporations, yes. The Alaska Department of Revenue encourages electronic payments made through its secure online portal, as these apply instantly and reduce administrative handling. Corporations may find the online payment process through the AK-6240 Calculator especially useful because it provides clear guidance on when to use the voucher versus paying electronically. However, some corporations still prefer checks for internal control or accounting reasons.
Are military salaries taxed differently for Alaska residents?
No. Alaska imposes no state income tax on military salaries, reserve pay, hazard pay or deployment income. Service members stationed in Alaska experience identical federal withholding to those stationed anywhere else, but they benefit from Alaska’s zero-percent state rate. Out-of-state service members temporarily assigned to Alaska keep their home-state residency for tax purposes unless they change domicile, but Alaska itself never taxes their military wages. Veterans receiving pensions or disability compensation also see no Alaska tax on those benefits.
What happens if a corporation underreports oil and gas income in Alaska?
Penalties for underreporting can be substantial. Because the oil and gas sector is a primary revenue source, Alaska’s Department of Revenue actively scrutinizes filings involving extraction, production and pipeline transportation. Failure to report accurately can lead to audits, amended assessments, disallowance of deductions or credits, interest charges and negligence penalties. Corporations may also be required to amend combined group filings if inconsistencies are discovered.
Does remote work for an out-of-state employer create Alaska tax obligations?
No—Alaska does not tax income regardless of where your employer is located. However, the *other* state may attempt to tax your income if it has “convenience of the employer” rules (e.g., New York, Pennsylvania, Connecticut) or if the employer has nexus in that state. Alaska itself will never tax remote-income wages, but you may be required to file a nonresident return elsewhere. Federal rules apply normally, and Alaska provides no credit mechanism because no state tax exists.
Important Notes
All calculations are estimates for guidance only. Always review your return and consider professional advice when submitting official filings.