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Filing your annual Hawaii state tax return correctly and on time is crucial to avoid penalties and interest. If you’re preparing your Hawaii return and wondering where to mail it when done, you’ve come to the right place.

If you’re short on time, here’s a quick answer: Mail your completed Hawaii state tax return to Hawaii Department of Taxation, P.O. Box 1530, Honolulu, HI 96806-1530.

In this comprehensive guide, we’ll cover everything you need to know about mailing your Hawaii state tax return, including:

Hawaii’s filing deadlines and how to ensure your return arrives on time, directions for accurately addressing your return, details on necessary attachments and information, Hawaii’s tax penalty and interest rules, and other critical steps to avoid mistakes when you file.

Hawaii State Tax Return Filing Deadlines

General Tax Return Due Date

General Tax Return Due Date

The general deadline to file your Hawaii state income tax return is April 20th. This applies to both resident and nonresident taxpayers. If you file your return after the April 20th deadline, you may be subject to late filing penalties and interest charges.

Some key dates for Hawaii tax filing include:

  • January 31 – Deadline for employers to distribute W-2 forms
  • February 28 – Deadline for businesses to distribute 1099 forms
  • April 20 – Tax filing and payment deadline for most taxpayers
  • October 20 – Extended filing deadline if you filed an extension

Filing your Hawaii tax return on time ensures you avoid any unnecessary fees or penalties. Even if you cannot pay the full amount owed, it is wise to file on time to minimize extra charges.

Extension Deadline

If you need more time to file your Hawaii income tax return, you may request a 6-month extension to push the deadline back to October 20th. To get this extension, you must file Hawaii Form N-201A by the original April 20th deadline.

When filing for an extension, keep these key points in mind:

  • You still need to estimate your tax liability and pay any amount owed by April 20 to avoid penalties and interest
  • An extension gives you more time to file, but not more time to pay
  • If you have a balance due when filing your return in October, penalties and interest will apply to any unpaid tax

In short, the October 20th extended deadline is for filing your tax return and related schedules, not making a payment. You still need to pay taxes owed on time to sidestep unnecessary fees.

Where to Mail Your Hawaii Tax Return

Mailing Address

When filing your Hawaii state tax return, you’ll need to mail it to the correct address to ensure it is processed properly. The mailing address differs depending on whether you are enclosing a payment:

  • Returns with payments: Hawaii Department of Taxation, Attn: Payment Section, PO Box 1530, Honolulu, HI 96806-1530
  • Returns without payments: Hawaii Department of Taxation, Attn: Document Processing Branch, PO Box 3559, Honolulu, HI 96811-3559

Be sure to include all required documents and forms when mailing your return to avoid any delays. Double check that you have signed your return and written your social security number on any payments.

Special Filing Situations

There are a few special filing situations to be aware of for Hawaii returns:

  • Amended Returns: Mail to the Document Processing Branch address above. Mark “Amended” in red at the top.
  • Extensions: File Form N-100A to extend your filing deadline. Mail to the Document Processing Branch address.
  • Military Personnel: Special rules allow for deadline extensions and state residency retention. See the military page for details.

Contact the Hawaii Department of Taxation at (808) 587-4242 or online if you have any other questions about mailing your return.

How to Address Your Hawaii Tax Return Envelope

Return Address

When mailing your Hawaii state tax return, be sure to include a complete return address in the upper left corner of the envelope. This allows the post office to return your envelope to you if needed, ensuring your tax documents arrive at the Hawaii Department of Taxation.

Your return address should include your full name, mailing address, city, state, and ZIP code. For example:

  • John Doe
  • 123 Main St
  • Honolulu, HI 96818

Print clearly and double check for accuracy. Mistakes can delay processing of your return.

Hawaii Taxation Department Address

The mailing address to file your Hawaii tax return is:

  • Hawaii Department of Taxation
  • P.O. Box 1530
  • Honolulu, HI 96806-1530

Be sure to use this exact address. Sending to the wrong address may mean missing important deadlines.

Proper Postage

To avoid any delivery issues, make sure to use proper postage when mailing tax forms. Postage rates frequently change, so check for current pricing.

For reference, a standard envelope with up to 3 ounces of documents costs $0.60 to mail as of 2023. Heavier envelopes may cost $0.20-$0.75 more. Using too little postage can significantly delay receipt.

You can purchase Forever Stamps which work for standard envelopes no matter the current postal rates. Using metered postage printed onto envelopes also guarantees correct pricing.

Properly addressing your return envelope takes just a few extra minutes but saves time and headaches down the road. Following these simple steps helps make sure your Hawaii state tax forms arrive safely and punctually.

What to Include with Your Hawaii Tax Return

Required Attachments

When mailing your Hawaii state tax return, you need to include certain documents to avoid processing delays or issues. Here are some of the key items to include:

  • W-2 forms for all your income
  • 1099 forms reporting interest, dividends, and other income
  • Schedule C if you have self-employment income
  • Form N-11 if you are claiming a refund of income taxes paid to another state
  • Form N-15 if you sold any real estate

Failing to attach these and other required forms may result in the state tax department sending your return back unprocessed. So be sure to review the instructions and include all necessary paperwork.

Payment Options

If you owe additional Hawaii state tax, you have a few options for making a payment:

  • Check or money order made out to “Hawaii State Tax Collector.” Be sure to include your social security number.
  • Online payment via credit/debit card or e-check. Convenient, but fees apply.
  • Electronic funds withdrawal when e-filing your return.

Note that there is no option to pay with cash. Sending actual currency in the mail could result in loss or theft. Stick to the approved payment methods above.

Other Documentation

In addition to the required forms and any payment, the state tax department may request other documentation to support entries on your return. For example:

  • Receipts for deductions or credits claimed
  • Proof of health insurance if claiming an exemption
  • Details on retirement account contributions
  • Records supporting estimated tax payments

Having organized records will help you respond promptly if the tax agency selects your return for review. Keep all tax-related documents secure for at least 3 years after filing.

Hawaii Tax Penalties and Interest Rules

Late Filing and Late Payment

The Hawaii Department of Taxation charges both penalties and interest for late filing or late payment of state tax returns. The late filing penalty is assessed at 5% per month up to a maximum of 25% of the tax due. The late payment penalty is 20% of the unpaid tax.

Both penalties apply unless you have reasonable cause for the failure to file or pay on time.

For example, if you file your Hawaii return 3 months late and owe $1,000 in tax, you’ll pay a late filing penalty of 15% of $1,000, or $150. If you also pay the $1,000 tax due 2 months after the due date, you’ll owe a late payment penalty of 20% of $1,000, or $200.

Accuracy Penalties

Hawaii also charges an accuracy penalty if there is a substantial understatement of tax, negligence, or disregard of rules and regulations. The accuracy penalty is 20% of the underpaid tax.

For instance, if you underreport your Hawaii tax by $500 due to negligence, you would owe a $100 accuracy penalty in addition to the additional $500 tax.

Interest Charges

The Hawaii Department of Taxation assesses interest on both late payments and underpayments from the due date of the return until the date the tax is paid. The interest rate is 2/3 of 1% per month, or 8% annually as of 2023.

This means if you owe an additional $1,000 in Hawaii tax that you didn’t pay by the due date, you would accrue about $67 of interest after 3 months if the unpaid tax remained outstanding. The interest charges encourage prompt payment of taxes due.

Other Important Hawaii Tax Return Tips

Sign Your Return

Don’t forget to sign your Hawaii state tax return before mailing it in. Both spouses need to sign a joint return. If you do not sign it, the Hawaii Department of Taxation will not be able to process your return. An unsigned tax return is like an invalid check – it cannot be cashed.

So take the extra minute to sign and date the return, using your normal legal signature in blue or black ink. This simple step will prevent processing delays and ensure you receive your tax refund as quickly as possible.

Keep Records

Make sure to keep records of your tax return and supporting documents. The Hawaii statute of limitations gives the Department of Taxation up to three years to audit your return. So you need to hang onto records that support the income, deductions, exemptions, payments, and more that you reported.

For example, keep pay stubs, bank statements, canceled checks, receipts, and bills. If you receive a notice from the tax department related to your return, you may need to produce the records again. Good record keeping makes handling any questions or audits quick and painless.

Check Return Status

After you mail your Hawaii income tax return, make sure to check its status periodically so you know it was received and processed successfully. You can easily check online using the Hawaii Department of Taxation’s automated self-service options.

Simply provide details like your Social Security Number, filing status, and refund amount. You will be able to see updates if your return was received, when your refund was approved, and the issue date for your refund check.

Monitoring online prevents wondering and ensures you get your hard-earned tax refund as soon as the state releases it.


Mailing your Hawaii state tax return doesn’t need to be complicated or intimidating if you understand the state’s processes and requirements.

By following the recommendations in this guide for meeting deadlines, addressing your return properly, including necessary documentation, and avoiding common mistakes, you can file your taxes correctly the first time and avoid unnecessary penalties or interest charges.

For additional support filing your Hawaii tax return, consider working with a tax professional for specialized guidance. Get your maximum refund and peace of mind by mailing your state taxes correctly and on time.

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