Hawaii HW-4 Withholding Calculator 2026

Hawaii does not accept the federal W-4 for state withholding. You give your employer Form HW-4, the Employee's Withholding Allowance and Status Certificate. If you do not file one, your employer must withhold as if you were single and claimed no allowances, which usually withholds more than you owe.

Hawaii law does not allow exempt status on the HW-4, so unlike the federal W-4 you cannot opt out of withholding. File a new HW-4 within 10 days if you divorce, legally separate, or a spouse or dependent no longer qualifies for the allowance you claimed.

Allowances are still part of the Hawaii form. For 2026 each regular allowance reduces the wages used to figure withholding by $1,144, and employers also subtract an extra $4,350 lump sum that stands in for the standard deduction. You can claim one allowance for yourself, one if you are single with only one job, one for a spouse who does not claim their own allowance, one for age 65 or older, one for each dependent, one for $250 or more of estimated tax credits, extra allowances for itemized deductions, and one more if you file as head of household.

You can claim fewer allowances than you are entitled to. Claiming fewer withholds more, which is how to avoid a bill in April. If you have two jobs or a working spouse, Hawaii recommends claiming all your allowances on the highest-paying job and zero on the others.

After allowances, Hawaii applies graduated withholding rates from 1.4% up to 7.9%. Single filers move to 7.6% above $48,000 and 7.9% above $125,000; married filers use a table with thresholds twice as high. Head of household is treated as Single for withholding, which is why it earns an extra allowance instead of a separate table. Your actual tax return uses a separate rate schedule that tops out at 11%, so the two can differ.

For example, a single employee earning $26,000 who claims three allowances has $26,000 − (3 × $1,144) − $4,350 = $18,218 subject to withholding, or about $498 a year.

The federal W-4 controls federal withholding and does not affect Hawaii. If you owe at tax time, see our guide on how to stop owing taxes for the federal side, and adjust the HW-4 for the state side.