Hawaii tax forms & filing.

Things to know about filing in Hawaii

• Hawaii's state filing deadline is April 20, not April 15. Tax owed must still be paid by April 20 to avoid interest and penalties.
• Hawaii has a General Excise Tax (GET) on business gross receipts that functions like a sales tax but is paid by the seller, not the buyer. Self-employed Hawaii filers must register and remit GET separately — this is the biggest compliance surprise for new Hawaii residents starting a business.
• Hawaii excludes Social Security benefits and qualified defined-benefit pension income from state tax. 401(k) and IRA distributions are generally taxable.
• Hawaii does not tax interest on federal obligations (consistent with federal law) but also has its own bond exclusions for state-issued debt.

Hawaii General Excise Tax (GET) — the surprise for self-employed residents

Hawaii's General Excise Tax (GET) is a tax on business gross receipts that functions like a sales tax but is paid by the seller, not the buyer. Self-employed Hawaii residents — consultants, freelancers, contractors, single-member LLCs — must register and remit GET on their gross business income.

Rates vary by activity (typically 4% for retail and services, with a 0.5% Honolulu County surcharge in addition to the state rate). GET is in addition to federal income tax and Hawaii state income tax — meaning a Hawaii self-employed filer's total effective tax rate is meaningfully higher than just the income-tax bracket suggests.

Hawaii residents starting a side business or consulting practice often miss the GET registration and accrue back-tax obligations. We flag this at intake for any client with Hawaii-source self-employment income.

Hawaii April 20 filing deadline

Hawaii's individual income tax filing deadline is April 20, five days after the federal deadline. Tax payment is also due April 20 to avoid penalty and interest — the deadline extension covers filing and payment, not just filing.

If you have Hawaii GET obligations (per the discussion above), those quarterly returns have their own separate due dates that don't align with the income-tax deadline.

For Hawaii residents who also file in another state (military service, mainland investment income, snowbird patterns), we coordinate the federal April 15 + Hawaii April 20 + other-state deadline calendar at intake to ensure no missed dates.

Where's my refund?

The Hawaii Department of Taxation runs the official refund-status tracker. You'll need your Social Security number, filing status, and exact refund amount (in some cases, the tax year and a return-amount input).

Check your Hawaii refund status →

Multi-state considerations

If you lived or worked in more than one state during the tax year, you typically file a part-year resident return in each state. If you live in one state and work in another, you usually file as a resident where you live and as a nonresident in the work state — claiming a credit on the resident return for taxes paid to the work state. Reciprocity agreements between some neighboring states change this default; we map this out at intake.

Hawaii-specific multi-state nuances are addressed in the quirks list above when they apply.

Get the current-year forms

State tax rates, brackets, and forms change every year. We point to the Hawaii Department of Taxation as the authoritative source for current-year information. Form numbers above are stable; rates, deduction amounts, and credit limits are not — always verify before relying on a specific dollar amount.

Open the Hawaii Department of Taxation website →