Payroll Hawaii: Employer Tax and Software Guide

Hawaii asks more of a small employer than almost any state in the country, and the reasons are not the ones a mainland owner expects.

The income tax has twelve brackets, more than any other state, and the state runs its own withholding form because it kept the allowance method that the federal W-4 abandoned in 2020. Temporary disability insurance is mandatory and bought from a private carrier, one of only five states that require it. And a 1974 law that predates the Affordable Care Act by thirty-six years obliges employers to provide health coverage to anyone working twenty hours a week for four consecutive weeks, a trigger that fires at roughly three workdays and that no payroll platform watches for you.

None of this is hidden. All of it is easy to miss when the payroll setup was built for a mainland business and simply extended to a Hawaii hire. This guide covers what the state requires, what changed for 2026, and how 10 payroll providers price the work.

The five layers of Hawaii payroll

Most state payroll guides cover withholding and unemployment and stop. In Hawaii that covers less than half of what an employer owes, so it is worth laying out the whole stack before going into any one piece.

The bottom two rows are where Hawaii separates from the mainland. Neither is a tax in the ordinary sense, both are insurance purchased from private carriers, and both carry eligibility rules that a payroll system will not enforce on its own. The health coverage line is also, for most small employers, larger than every other line on this table combined.

State income tax, HW-4, and unemployment

Twelve brackets and Act 46

Hawaii has twelve individual income tax brackets running from 1.4 percent to 11 percent, more brackets than any other state. Act 46 of 2024, the largest income tax cut in state history, is phasing in wider brackets and higher standard deductions in alternating years through 2031, which means the tables change more often than in most states and a platform running stale tables produces quietly wrong withholding rather than an obvious error.

Form HW-4 and the two-form problem

Form HW-4 is the Hawaii Employee's Withholding Allowance and Status Certificate. Every new hire in Hawaii completes it in addition to the federal W-4, and the reason is a timing mismatch rather than any deliberate state policy: the federal form dropped withholding allowances in its 2020 redesign, Hawaii kept them.

One detail differs sharply from the federal form: Hawaii does not permit a blanket exempt status. An employee who is exempt from federal withholding must still file an HW-4 claiming at least zero allowances. There is no version of this where no form is needed.

Unemployment insurance

Two figures matter and one of them moved this year.

The wage base rose by $2,500 while the rates held, so an employer with staff earning above the base sees a modest increase without any rate change. The Employment and Training assessment applies to employers with a contribution rate above zero and below the maximum for the schedule. It cannot be credited against federal unemployment tax and does not go to the employer reserve account, so it is a small pure cost rather than a prepayment. Returns are quarterly on Form UC-B6.

TDI and the Prepaid Health Care Act

These two obligations are what genuinely distinguish Hawaii, and both are insurance purchased from private carriers rather than taxes remitted to the state.

Temporary disability insurance

TDI covers employees who cannot work because of a non-work-related illness or injury, including pregnancy. Hawaii mandates it under HRS 392, one of only five states that do. There is no state fund, so coverage comes from an approved carrier or an approved self-insured plan.

The employer may withhold half the premium cost but never more than the 0.5 percent rate or the $7.50 weekly ceiling, whichever binds first. Anything above that is the employer's cost. Some employers simply absorb the whole premium as a benefit. One rule is easy to breach without noticing: an employer may not deduct any premium from an employee who does not meet the eligibility requirements of HRS 392-25, which means a new hire who has not yet accumulated the required employment history should not be having TDI withheld at all.

The Prepaid Health Care Act

Enacted in 1974, this was the first employer health insurance mandate in the United States, predating the Affordable Care Act by thirty-six years. It is also, in practical terms, the single most consequential compliance item for a small Hawaii employer.

Eligibility requires both conditions: twenty or more hours per week for four consecutive weeks with the same employer, and a monthly wage of at least 86.67 times the current minimum hourly wage. Once triggered, coverage begins at the earliest available enrollment date, typically the first of the following month. There is no additional waiting period to apply on top.

The cost-sharing rule that catches employers

The employer must pay at least half the premium for single coverage, and the employee's share cannot exceed 1.5 percent of their monthly wages. Both limits apply simultaneously and the lower one governs.

The Department of Labor and Industrial Relations identifies this as one of the most common violations, and the usual cause is an employer applying a clean fifty-fifty split without checking it against the wage cap. At Hawaii premium levels the 1.5 percent limit binds for most hourly employees, which means the employer absorbs far more than half in practice. Budget for that rather than for the split.

Pay frequency, final pay, and the wage floor

Twice a month, minimum

Under HRS 388-2 employees must be paid at least twice per month on regular paydays designated in advance, with wages paid within seven days after the end of each pay period. Monthly payroll is not permitted. A mainland business extending its existing payroll calendar to a Hawaii hire runs into this immediately if that calendar was monthly.

Final pay at the time of discharge

Hawaii is among the strictest states in the country here, and the rule differs by how the employment ended.

Under HRS 388-10 an employer who fails to pay on time may owe the employee a penalty equal to the wages owed or $400, whichever is less. Act 115 of 2025 separately established a minimum civil penalty of $500 for wage and hour violations. Our guide to the final paycheck for a terminated employee covers how these rules compare across states.

Minimum wage and the tip credit

The minimum wage rose to $16.00 per hour on January 1, 2026, a $2.00 increase from $14.00, the third step in the schedule enacted in 2022. The final scheduled step takes it to $18.00 on January 1, 2028, after which no automatic indexing applies. The rate is statewide; Hawaii law prevents counties from setting their own.

The tip credit is narrow. An employer may pay a tipped employee $14.75 per hour, a credit of $1.25, but only where the employee regularly receives more than $20 a month in tips and where combined wages and tips exceed the minimum wage by at least $7.00 per hour, meaning $23.00 in 2026. Our guide to the minimum wage for tipped employees covers how the federal and state tests interact.

10 payroll providers for Hawaii employers compared

Every provider below files Hawaii state withholding and unemployment insurance. The differentiators here are narrower than the state's reputation suggests: there is no local tax layer to resolve, so what matters is whether the platform calculates the TDI employee share against the weekly cap correctly, and whether anything in your stack watches the health coverage trigger.

OnPay

One plan at $49 per month plus $6 per employee, everything included, no tiers to climb. Tax filing covers all 50 states with no multi-state surcharge, and year-end W-2 and 1099 filing sits in the base price. OnPay maintains a Hawaii-specific tax rates resource, which is a reasonable proxy for whether a vendor keeps state tables current in a state where Act 46 moves the brackets on an alternating schedule.

Gusto

The most common first payroll purchase for US small businesses, with automatic tax filing, published pricing, and the strongest onboarding experience among payroll-first platforms. Simple runs $49 per month plus $6 per employee after a base increase in early 2026. Gusto documents the Prepaid Health Care rules in its help materials and handles the TDI deduction setup, which puts it ahead of most published-price platforms on Hawaii specifics.

The constraint is the single-state limit on Simple. Any hire outside Hawaii moves you to Plus at $80 plus $12 per employee.

Patriot Software

The cheapest legitimate full-service payroll on the market. Full Service is $37 per month plus $5 per employee and includes federal and state tax filing plus new hire reporting. Basic is $17 plus $4 if you file taxes yourself, which in Hawaii means handling the quarterly UC-B6 and the withholding returns by hand.

Square Payroll

At $35 per month plus $6 per person, Square is the cheapest full-service option with published pricing. For a Hawaii restaurant or retail operation already running Square point of sale, timecard data flows straight into payroll with no integration work, and in a tourism-heavy economy with variable hours that connection is worth more than in most states.

SurePayroll

Owned by Paychex and built for very small employers and household employers. Full Service is $29 per month plus $7 per employee, with a flat $9.99 monthly multi-state fee rather than a per-state charge. For a Hawaii household employer paying a caregiver, this is a sensible fit at a price the larger platforms do not reach.

QuickBooks Workforce Payroll

Core is $50 per month plus $6.50 per employee, and the argument for it is unchanged: if your books live in QuickBooks Online, payroll reaches the general ledger without an export.

ADP RUN

ADP has the deepest tax compliance engine in the category, and in Hawaii that depth converts into value mainly around keeping the twelve-bracket tables current as Act 46 phases in changes, and handling the TDI deduction correctly against its cap.

The cost is opacity. ADP does not publish RUN pricing; third-party estimates put Essential near $79 per month plus $4 per employee, but every quote is individual. Contracts typically run a year with automatic renewal and a 30 to 60 day cancellation window.

Paychex Flex

Paychex competes on service rather than software, with a named representative at higher tiers. Pricing is quote-only and quarterly administrative charges appear regularly in customer reports. The Hawaii case is specific: if you want someone to call when a Prepaid Health Care question arrives or a TDI carrier invoice does not reconcile, that access has value in a state where the rules have no mainland equivalent.

ProService Hawaii

A local professional employer organization rather than a payroll platform, and the distinction matters. Under a PEO arrangement the provider becomes a co-employer, carrying payroll, benefits placement, workers compensation, and compliance responsibility together. In a state where health coverage is mandatory, TDI must be sourced from a carrier, and the rules have no mainland analogue, offloading the whole stack to a local firm is a legitimate strategy rather than a cop-out.

The trade-offs are real. PEO pricing is quote-only and typically runs well above standalone payroll software, the co-employment relationship involves a contract rather than a monthly subscription, and leaving is a project.

Rippling

Rippling unifies payroll, HR, and IT provisioning on one employee record. The core platform is $35 per month plus $8 per employee, with payroll as a separate module. Real-world all-in costs land between $25 and $45 per employee per month once you assemble a working configuration.

What each provider actually costs a Hawaii employer

The table below models published rates at three headcounts. Read it with one caveat firmly in mind: in Hawaii the payroll subscription is not the large number.

Square is the cheapest published option at every headcount and Patriot runs close behind, though Patriot charges $12 per month per additional state. Gusto Simple is competitive until a mainland hire forces the Plus tier, taking a 25-person payroll from $199 to $380 per month.

Choosing a payroll provider for Hawaii

Before you choose

FirstHR does not process payroll, file payroll taxes, or administer benefits. Every provider above does something we do not, and if running payroll or placing health coverage is the problem in front of you, one of them is the answer. For a Hawaii employer with no HR staff at all, a local PEO is a reasonable route precisely because the health and disability requirements have no mainland equivalent.

What we handle is the document layer that feeds payroll: onboarding workflows, e-signature on Form HW-4, I-9s, and offer letters, employee records, and document management for 5 to 50 employee US teams at a flat $98 to $198 per month. Several of the Hawaii requirements above are document and record problems rather than payroll problems, namely getting both withholding forms signed before day one, completing I-9 verification within three business days, and filing the new hire report within twenty days of the hire date. Our Hawaii HR compliance guide covers the wider set of state obligations beyond payroll.

Frequently Asked Questions

What payroll taxes do Hawaii employers have to handle?

Four state obligations plus federal: income tax withholding on twelve brackets from 1.4 to 11 percent driven by Form HW-4; unemployment insurance on the first $64,500 of wages at 2.40 percent for new employers; mandatory temporary disability insurance with the employee share capped at 0.5 percent of weekly wages and $7.50 per week; and health coverage under the Prepaid Health Care Act. See our overview of payroll taxes by state for how this compares elsewhere.

What is Form HW-4 and why do Hawaii employees fill out two withholding forms?

HW-4 is the Hawaii Employee's Withholding Allowance and Status Certificate. The federal W-4 dropped allowances in its 2020 redesign and Hawaii kept them, so both forms are needed. Allowances cover the employee, a non-working spouse, each dependent, and an extra at age 65 or over. Hawaii permits no blanket exempt status, so an employee exempt federally still files an HW-4 with at least zero allowances.

What is Hawaii TDI and how much can an employer deduct?

Temporary disability insurance covers non-work-related illness or injury including pregnancy, mandatory under HRS 392 with no state fund, so coverage comes from an approved private carrier. The employer may withhold half the premium but no more than 0.5 percent of weekly wages and no more than $7.50 per week in 2026, and may not deduct at all from an employee who does not meet the eligibility requirements in HRS 392-25.

What triggers coverage under the Hawaii Prepaid Health Care Act?

Twenty or more hours per week for four consecutive weeks with the same employer, plus a monthly wage of at least 86.67 times the minimum hourly wage. Both conditions must be met. Coverage then begins at the earliest available enrollment date with no further waiting period, which is stricter than the federal ACA mandate at thirty hours with up to ninety days permitted. The Act covers the employee, not dependents.

How much can an employer charge an employee for health coverage in Hawaii?

The employer pays at least half the premium for single coverage and the employee pays no more than 1.5 percent of monthly wages, with the lower limit governing. On a $600 monthly premium for someone earning $2,800 a month, half is $300 but 1.5 percent is $42, so the employee pays $42. Applying a flat fifty-fifty split without checking the wage cap is among the most common violations the state identifies.

What is the Hawaii unemployment insurance wage base?

$64,500 per employee, up from $62,000, on Contribution Rate Schedule C. New employers pay 2.40 percent and the maximum experienced rate is 5.60 percent, plus a 0.01 percent Employment and Training assessment that cannot be credited against federal unemployment tax. Returns are quarterly on Form UC-B6. Our guide to state unemployment tax covers how experience rating works.

How often must Hawaii employers pay employees?

At least twice per month on paydays designated in advance, with wages paid within seven days after the pay period ends, under HRS 388-2. Monthly payroll is not permitted, which catches out mainland businesses extending an existing payroll calendar to a Hawaii hire. Pay statements must show hours, rates, deductions, and gross and net pay.

When is a final paycheck due in Hawaii?

At the time of discharge for a terminated employee, or the next working day if immediate payment is genuinely impracticable, under HRS 388-3. Resignation with a full pay period of notice means payment at the time of quitting; less notice means the next regular payday. Late payment can carry a penalty of the wages owed or $400, whichever is less, and Act 115 of 2025 set a $500 minimum civil penalty for wage and hour violations.

How long do Hawaii employers have to report a new hire?

Twenty days from the date of hire, filed with the Child Support Enforcement Agency rather than the labor department, which surprises employers used to other states. Returning employees count again after a separation. See our guide to new hire reporting for what each report must contain.