HWB on a W-2 is a Hawaii payroll code that appears in Box 14 to show how much you paid toward your share of employer-sponsored health insurance premiums during the year. It stands for Hawaii Health Benefits (sometimes Hawaii Welfare Benefits), and it exists because Hawaii is the only state that requires most employers to provide health coverage. Whether the figure changes anything on your tax return depends on how your employer set up the deduction.
What the HWB Figure Represents
Box 14 is the catch-all space on the W-2 where employers report items that do not fit the numbered boxes. The IRS lets them use it for informational entries like state disability taxes, union dues, and health premiums withheld from pay, and each entry has to carry a label.1Internal Revenue Service. General Instructions for Forms W-2 and W-3 (2026) – Section: Box 14a—Other That label is why you see “HWB” next to a dollar amount.
The dollar amount is the total withheld from your paychecks over the year for your portion of the health premium. If your employer bundles dental or vision into the same benefit package, those withholdings may be rolled into the same figure. Box 14 entries are primarily informational and usually do not drive a separate calculation on your return.
Why Hawaii Employers Report It
The code traces back to the Hawaii Prepaid Health Care Act, the 1974 law that requires employers doing business in the state to provide health coverage to eligible workers.2Justia Law. Hawaii Revised Statutes 393-33 – Penalties; Injunction Under the law, your employer must pay at least half of the premium for your individual coverage, and your share cannot exceed the lesser of 50 percent of the premium or 1.5 percent of your monthly gross wages.3State of Hawaii Disability Compensation Division. About Prepaid Health Care The HWB amount on your W-2 is the yearly total of what came out of your paychecks under that cap.
Does HWB Affect Your Tax Return?
It depends on whether the premiums were deducted before or after taxes. Most Hawaii employers run health premiums through a Section 125 cafeteria plan, which allows pre-tax treatment.4Office of the Law Revision Counsel. 26 USC 125 – Cafeteria Plans
Pre-Tax Premiums
If your premiums came out pre-tax, the HWB amount has already been subtracted from the wages reported in Box 1 (federal taxable wages), Box 3 (Social Security wages), and Box 5 (Medicare wages).5Internal Revenue Service. 2026 Publication 15-B You already received the benefit through smaller withholding on every paycheck. The HWB line in Box 14 just confirms the amount excluded. Nothing more happens at filing time.
After-Tax Premiums
If the premiums were deducted after taxes, the HWB amount is still inside the wages in Box 1, so you paid income tax on it. You may be able to recover some of that tax by including the premiums as a medical expense on Schedule A, but only if you itemize and only to the extent your total medical expenses exceed 7.5 percent of your adjusted gross income.6Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses
How to Tell Which One Applies
Pull your final pay stub of the year and compare the year-to-date gross wages to Box 1 of your W-2. If Box 1 is lower than gross pay by roughly the HWB amount (plus any retirement contributions), the premiums came out pre-tax. If the two numbers line up without that gap, the premiums were after-tax.
Entering HWB in Tax Software
When your software prompts you for Box 14, type “HWB” as the description and enter the dollar amount shown. If asked to categorize the entry, pick “Other (not classified)” unless a Hawaii-specific health benefits option appears. For federal purposes the entry is informational and in most cases will not change your refund or balance due.
Don’t Deduct the Same Premiums Twice
If your premiums were pre-tax, do not also list them on Schedule A. The IRS does not allow a deduction for insurance premiums paid with money that was never included in your gross income to begin with.6Internal Revenue Service. Publication 502 (2025), Medical and Dental Expenses Claiming them anyway would be taking two tax breaks for the same expense and can trigger a correction or audit. Only after-tax premiums qualify for the Schedule A medical expense deduction, and only the portion above the 7.5 percent AGI threshold counts.7Internal Revenue Service. Instructions for Schedule A (Form 1040) (2025)
If the HWB Amount Looks Wrong
Compare the figure against your pay stubs. If it does not match, ask your employer’s payroll or HR department for a corrected form (W-2c). Most errors are fixed at this step.
If the correction has not arrived by the end of February, you can call the IRS at 800-829-1040 or visit a Taxpayer Assistance Center to open a formal W-2 complaint. The IRS will send your employer a letter asking for a corrected form within ten days. If the deadline arrives before the corrected form does, file using Form 4852 (Substitute for Form W-2), estimating your wages and withholding from your final pay stub. If a corrected W-2 shows different numbers after you have already filed with Form 4852, you will need Form 1040-X to amend the return.8Internal Revenue Service. W-2 – Additional, Incorrect, Lost, Non-Receipt, Omitted