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How to Calculate 2018 District of Columbia 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 District of Columbia 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 District of Columbia small businesses here.
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District of Columbia State Tax Tables



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

Tax rate used in calculating District of Columbia state tax for year 2018

State Abbreviation:

DC

State Tax Withholding State Code:

11

Acceptable Exemption Form:

D-4

Basis For Withholding:

State Exemptions

Acceptable Exemption Data:

S, M, H, N/Number of Exemptions

TSP Deferred:

Yes

Special Coding:

Determine the Total Number Of Allowances field as follows:
First Position - S = Single; M = Married, Filing Jointly; N = Married, Filing Separately; H = Head of Household
Second and Third Positions - Enter the total number of allowances claimed. If less than 10, precede with a zero.

Additional Information:

None

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Withholding Formula >(District of Columbia Effective 2018)<

  1. Subtract the biweekly Thrift Savings Plan contribution from the gross biweekly wages.

  2. Subtract the nontaxable biweekly Federal Health Benefits Plan payment(s) (includes dental and vision insurance program, and flexible spending account - health care and dependent care deductions) from the amount computed in step 1.

  3. Add the taxable biweekly fringe benefits (taxable life insurance, etc.) to the amount computed in step 2 to obtain the adjusted gross biweekly wages.

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

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

    6. Dependent Allowance = >$4,150< x Number of Dependents

  6. Apply the taxable income computed in step 5 to the following table to determine the District of Columbia tax withholding.

    7. Tax Withholding Table
    All filing status


    If the Amount of
    Taxable Income Is:

    The Amount of
    District of Columbia
    Tax Withholding Should Be:


    Over:

    But Not
    Over:

    Of Excess
    Over:

    $ 0
    $ >10,000
    $       0
    plus
    4.0%
    $ 0
    10,000
    40,000
             400
    plus
    6.0%
    10,000
    40,000
    60,000
      2,200.00
    plus
    6.5%
    40,000
    60,000
    350,000
      3,500.00
    plus
    8.5%
    60,000
    350,000
    1,000,000
    28,150.00<
    plus
    8.75%
    350,000
    1,000,000
    and over
    85,025.00<
    plus
    8.95%
    1,000,000


  7. Divide the annual District of Columbia tax withholding by 26 and round to the nearest dollar to obtain the biweekly District of Columbia tax withholding.

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