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How to Calculate 2018 Hawaii State Income Tax by Using State Income Tax Table

1. Find your income exemptions

2. Find your pretax deductions, including 401K, flexible account contributions ...

3. Find your gross income

4. Check the 2018 Hawaii state tax rate and the rules to calculate state income tax

5. Calculate your state income tax step by step

6. If you want to simplify payroll tax calculations, you can download ezPaycheck payroll software, which can calculate federal tax, state tax, Medicare tax, Social Security Tax and other taxes for you automatically. You can try it free for 30 days, with no obligation and no credt card needed.

Learn more about the in house payroll tax solution for Hawaii small businesses here.
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Hawaii State Tax Tables



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2024 Hawaii State Tax Witholding Table
2023 Hawaii State Tax Witholding Table
2022 Hawaii State Tax Witholding Table
2021 Hawaii State Tax Witholding Table
2020 Hawaii State Tax Witholding Table
( 2019   2018   2017   2016   2015   )

Tax rate used in calculating Hawaii state tax for year 2018

State Abbreviation:

HI

State Tax Withholding State Code:

15

Acceptable Exemption Form:

HW-4

Basis For Withholding:

State Exemptions

Acceptable Exemption Data:

S, M, H / Number of Exemptions

TSP Deferred:

Yes

Special Coding:

None

Additional Information:

None


Withholding Formula >(Hawaii Effective 2018)<
  1. Subtract the nontaxable biweekly Thrift Savings Plan contribution from the gross biweekly wages.

  2. Subtract the nontaxable Federal Health Benefits Plan payments (includes dental and vision insurance program, and flexible spending account - health care and dependent care deductions) from the adjusted gross biweekly wages.

  3. Add taxable fringe benefits (taxable life insurance, etc.) to the adjusted gross biweekly wages.

  4. Multiply the adjusted gross biweekly wages times 26 to obtain the annual wages.

  5. Determine the exemption allowance by applying the following guideline and subtract this amount from the annual wages to obtain the taxable income.

    Exemption Allowance = $1,144 x Number of Exemptions

  6. Apply the taxable income determined in step 5 to the following table to determine the Hawaii tax withholding.

    7. Tax Withholding Table
    Single
    or
    Head of Household

    If the Amount of
    Taxable Income Is:

    The Amount of Hawaii
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $        0
    $   2,400
    $    0
    plus
    1.40%
    $         0
        2,400
         4,800
        34
    plus
    3.20%
        2,400
        4,800
         9,600
       110
    plus
    5.50%
        4,800
        9,600
       14,400
      374
    plus
    6.40%
        9,600
      14,400
       19,200
      682
    plus
    6.80%
      14,400
      19,200
       24,000
     1,008
    plus
    7.20%
      19,200

      24,000

    		  >36,000 1,354 plus 7.60%   24,000

      36,000

    		  and over 2,266 plus 7.90%   36,000<


    Married


    If the Amount of
    Taxable Income Is:


    The Amount of Hawaii
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $        0
    $  4,800
    $      0
    plus
    1.40%
    $       0
        4,800
        9,600
           67
    plus
    3.20%
       4,800
        9,600
      19,200
         221
    plus
    5.50%
       9,600
      19,200
      28,800
         749
    plus
    6.40%
     19,200
      28,800
      38,400
      1,363
    plus
    6.80%
     28,800
      38,400
      48,000
      2,016
    plus
    7.20%
     38,400
      48,000
    >72,000
      2,707
    plus
    7.60%
     48,000
      72,000
    and over
      4,531
    plus
    7.90%
     72,000<

  7. Divide the annual Hawaii tax withholding by 26 to obtain the biweekly Hawaii tax withholding.
 

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