Does Hawaii tax RSU income the same as wages?

Yes. Hawaii treats RSU ordinary income as wages, taxable at the state's top marginal rate of 11%. Supplemental-wage federal withholding (22%, or 37% above $1M YTD) does not adjust for state withholding, so you often owe extra at filing.

What happens if I exercise ISOs while living in Hawaii?

Hawaii does not run a separate state AMT, so only federal AMT applies. You still need to model the bargain element carefully if you plan a cashless exercise-and-sell.

I moved to Hawaii from another state. Who taxes my vesting RSUs?

Most high-tax states (CA, NY, MA) source RSU ordinary income to workdays between grant and vest. If your grant pre-dates your Hawaii move, expect the old state to tax the portion of each tranche attributable to workdays earned there. Hawaii taxes the remainder.

Can I reduce Hawaii taxes by timing my RSU sales?

Hawaii gives preferential treatment to long-term capital gains. Holding RSU shares 12+ months past vest can produce both federal and state savings. Weigh concentration risk before using this as a reason to hold.

401(k) and retirement accounts in Hawaii: state deduction and Roth considerations

What Hawaii residents actually pay

Hawaii taxes ordinary income at a top marginal rate of 11%. RSU settlement value, NSO exercise spread, and ESPP discount income all count as ordinary wages for this purpose and flow through the state's normal brackets.

Long-term capital gains capped at 7.25% for higher earners.

Traditional 401(k) in Hawaii

A pre-tax 401(k) contribution reduces both federal and Hawaii taxable income today. At the top bracket, every $1,000 contributed saves 46.0 cents on the dollar (federal 35% + state 11%). At retirement, withdrawals are taxed at your then-current bracket.

Roth 401(k) breakeven

Roth 401(k) contributions are taxed at today's rates; withdrawals are tax-free. The Roth choice beats traditional when your retirement bracket is higher than your contribution bracket. For equity earners in high-income years, traditional is usually right during big RSU years and Roth is right during low-income transition years.

Mega-backdoor Roth

After-tax 401(k) contributions above the standard $23,500 limit can be converted to Roth in plans that allow it. For high earners in Hawaii, this is the largest tax-advantaged bucket available after the primary 401(k) and IRA caps. Check whether your plan allows after-tax contributions and in-plan Roth conversions.

Frequently asked

Does Hawaii tax RSU income the same as wages?: Yes. Hawaii treats RSU ordinary income as wages, taxable at the state's top marginal rate of 11%. Supplemental-wage federal withholding (22%, or 37% above $1M YTD) does not adjust for state withholding, so you often owe extra at filing.
What happens if I exercise ISOs while living in Hawaii?: Hawaii does not run a separate state AMT, so only federal AMT applies. You still need to model the bargain element carefully if you plan a cashless exercise-and-sell.
I moved to Hawaii from another state. Who taxes my vesting RSUs?: Most high-tax states (CA, NY, MA) source RSU ordinary income to workdays between grant and vest. If your grant pre-dates your Hawaii move, expect the old state to tax the portion of each tranche attributable to workdays earned there. Hawaii taxes the remainder.
Can I reduce Hawaii taxes by timing my RSU sales?: Hawaii gives preferential treatment to long-term capital gains. Holding RSU shares 12+ months past vest can produce both federal and state savings. Weigh concentration risk before using this as a reason to hold.