HI
Hawaii Small Business Tax Guide
Understand HI taxes, common filings, and recordkeeping—educational overview, not tax advice.
Disclaimer: This page is educational content only. Tax laws change, and your situation may differ. It is not legal, tax, or financial advice. Consult a qualified professional licensed in Hawaii before making filing or planning decisions.
Tax landscape for small businesses
Hawaii small business taxes rank among the highest in the nation. The state levies a graduated income tax with rates from 1.4% to 11%, making it one of only a few states with a top rate above 10%. The top rate applies to income over $200,000 for single filers, meaning many successful small business owners reach the highest bracket.
Instead of a traditional sales tax, Hawaii imposes a General Excise Tax (GET) of 4% on most business activities, with Oahu adding a 0.5% county surcharge for a total of 4.5%. Unlike a typical sales tax, the GET is technically levied on the business rather than the customer and applies to gross income — not just retail sales. This means services, wholesale transactions, and nearly all business activities are subject to GET, creating one of the broadest tax bases in the country.
Most businesses pass the GET through to customers, but the tax-on-tax structure means the effective pass-through rate is approximately 4.166% (or 4.712% on Oahu) to cover the GET owed on the GET amount itself. This nuance catches many new business owners off guard.
C corporations pay between 4.4% and 6.4% in corporate income tax on a graduated scale. The Department of Taxation handles all state tax filings, and Hawaii's April 20 filing deadline is five days later than the federal date.
Hawaii's island economy is driven by tourism, military, construction, and professional services. The high cost of living and elevated tax burden require careful financial planning for small business owners. However, Hawaii's unique market position, limited competition in many service categories, and strong local consumer base offer meaningful opportunities for well-managed businesses that account for the tax landscape in their pricing and cash flow projections.
Tax overview
Approximate categories many small businesses review with an advisor. Rates and rules vary by year, industry, and entity—verify with official sources.
| Tax type | Typical rate / basis | Notes |
|---|---|---|
| Income Tax | 1.4%–11% | Twelve brackets; top rate of 11% applies to income above $200,000 (single filers). |
| General Excise Tax | 4% (4.5% on Oahu) | Applied to gross business income, not just retail sales; covers services and most transactions. |
| Property Tax | Varies by county | Four counties set their own rates; different rates for residential, commercial, and hotel properties. |
| Corporate Tax | 4.4%–6.4% | Graduated corporate income tax rates for C corporations. |
Filing requirements
Common themes—not a complete checklist for your business.
Hawaii income tax return (Form N-11)
File Form N-11 (residents) or N-15 (part-year/nonresident) with the Department of Taxation by April 20 — five days later than the federal deadline. Hawaii starts with federal adjusted gross income and applies state-specific modifications. Extensions through October 20 are available, but any tax owed must be paid by the original April 20 deadline.
General Excise Tax filing (Form G-45/G-49)
File periodic returns on Form G-45 (monthly, quarterly, or semiannually depending on your liability) and the annual reconciliation on Form G-49. A GET license is required before doing business. The GET applies to gross receipts from all business activities including services, so every dollar of revenue is subject to the tax.
Estimated tax payments (Form N-1)
Required if you expect to owe $500 or more in Hawaii income tax. Quarterly payments are due April 20, June 20, September 20, and January 20 — note the 20th-of-the-month schedule that differs from the federal 15th. Base estimates on the prior year's liability or the current year's projected tax.
Corporate income tax (Form N-30)
C corporations file Form N-30 annually with the Department of Taxation. S corporations file Form N-35 as an informational return. Hawaii's graduated corporate rates range from 4.4% to 6.4%, and multi-state corporations must apportion income using the three-factor formula of property, payroll, and sales.
GET license application
All businesses operating in Hawaii must obtain a General Excise Tax license from the Department of Taxation before commencing business. The one-time application fee is $20. Operating without a valid GET license can result in penalties and back taxes. The license must be displayed at your place of business.
Employer withholding and unemployment registration
Hawaii employers must register for state income tax withholding with the Department of Taxation and for unemployment insurance with the Department of Labor. Withholding returns are filed quarterly on Form HW-14, and annual reconciliation Form HW-3 is due by the end of February.
Common deductions & write-offs
Often discussed at the federal level; state conformity differs.
- Home office expenses meeting federal IRS requirements under the simplified or regular method
- Business equipment and supplies used in operations, including Section 179 expensing on qualifying assets
- Self-employed health insurance premiums for you, your spouse, and dependents
- Retirement plan contributions to SEP-IRA, Solo 401(k), or SIMPLE IRA within federal limits
- GET paid on business transactions, deductible as a business expense on your income tax return
- Inter-island transportation and shipping costs, which are significant for businesses operating across multiple Hawaiian islands
- Professional licensing fees and continuing education costs required by Hawaii regulatory boards
- Business insurance premiums including general liability, professional liability, and hurricane coverage common in Hawaii
Practical tips
- The General Excise Tax applies to gross receipts, not net income — even unprofitable businesses owe GET on every dollar of revenue they collect.
- Hawaii's April 20 filing deadline differs from the federal April 15 deadline — mark both dates on your calendar to avoid confusion.
- GET applies to services, not just goods — service-based businesses in Hawaii must collect and remit GET on all billings and professional fees.
- The 4.5% GET rate on Oahu is higher than the neighbor islands' 4% — factor this into pricing if you serve multiple islands.
- Consider the high combined tax burden (up to 11% income + 4.5% GET) when setting rates for your services in Hawaii.
- The effective GET pass-through rate is 4.166% (4.712% on Oahu) — not the flat 4%/4.5% — because you owe GET on the GET amount passed through to customers.
- Deduct your GET payments as a business expense on your income tax return to partially offset the revenue-based tax burden.
- Budget for higher operating costs in Hawaii including inter-island shipping, imported goods, and labor — and ensure your pricing accounts for both GET and income tax obligations.
Related Resources
Frequently asked questions
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