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How to Calculate 2023 Indiana 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 2023 Indiana 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 Indiana small businesses here.
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Indiana State Tax Tables


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

Tax rate used in calculating Indiana state tax for year 2023

State Abbreviation:

IN

State Tax Withholding State Code:

18

Acceptable Exemption Form:

WH-4

Basis For Withholding:

State Exemptions

Acceptable Exemption Data:

0/ Number of Exemptions/ Number of Additional Exemptions

TSP Deferred:

Yes

Special Coding:

Determine the Total Number Of Allowances field as follows:
First Position - Enter 0 (zero).
Second and Third Positions - Enter the number of exemptions claimed.

Determine the Additional Exemptions Claimed field as follows:
First and Second Positions - Enter the number of additional exemptions claimed on Line 5 of the WH-4. Valid values are 00 through 99. If no allowances are claimed, enter 00.

Additional Information:

None


Withholding Formula (Indiana Effective 2023)
  1. Subtract the biweekly Thrift Savings Plan contribution from the gross biweekly wages.

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

  3. Determine the exemption allowance by applying the following guideline and subtract this amount from the result of step 2.

    4. Exemption Allowance = $1,000 x Number of Exemptions1
    1 Number of exemptions claimed for self, spouse, over age 65, blindness, and dependents.

  4. Determine the additional allowance by applying the following guideline and subtract this amount from the result of step 3 to compute the taxable income:

    5. Additional Allowance = $1,500 x Number of Additional Exemptions2
    2 Number of exemptions claimed for certain qualifying dependents.

  5. Optional: determine the adopted child dependent exemption applying the following guideline and subtract this amount from the result of step 4 to compute the taxable income:

    6. Adopted child exemption = $3,000 x Number of Adopted child exemption 2
    2 Number of exemptions claimed for certain qualifying dependents.

  6. Multiply the taxable income computed in step 4 by 3.15 percent to obtain the annual Indiana tax withholding.

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

2023 Indiana County Income Tax Rates and County Code

County NameCounty CodeTax TypeRate
Adams01COIT/CEDIT0.016
Allen02COIT/CEDIT0.0148
Bartholomew03CAGIT/CEDIT0.0175
Benton04CAGIT/CEDIT0.0179
Blackford05CAGIT/CEDIT0.015
Boone06COIT0.017
Brown07CAGIT/CEDIT0.025234
Carroll08CAGIT/CEDIT0.022733
Cass09CAGIT/CEDIT0.0295
Clark10CAGIT/CEDIT0.02
Clay11CAGIT0.0235
Clinton12CAGIT/CEDIT0.0265
Crawford13CAGIT/CEDIT0.01
Daviess14CAGIT/CEDIT0.015
Dearborn15COIT0.014
Decatur16CAGIT/CEDIT0.025
DeKalb17CAGIT/CEDIT0.0213
Delaware18COIT/CEDIT0.015
Dubois19COIT/CEDIT0.012
Elkhart20CAGIT/CEDIT0.02
Fayette21COIT/CEDIT0.0257
Floyd22CAGIT/CEDIT0.0135
Fountain23CAGIT/CEDIT0.021
Franklin24CAGIT/CEDIT0.015
Fulton25CAGIT/CEDIT0.0268
Gibson26CEDIT0.009
Grant27COIT/CEDIT0.0255
Greene28COIT0.0215/td>
Hamilton29COIT0.011
Hancock30CAGIT/CEDIT0.0194
Harrison31CAGIT/CEDIT0.01
Hendricks32CAGIT/CEDIT0.017
Henry33COIT/CEDIT0.018
Howard34COIT/CEDIT0.0175
Huntington35CAGIT/CEDIT0.0195
Jackson36CAGIT/CEDIT0.021
Jasper37CAGIT/CEDIT0.02864
Jay38CAGIT/CEDIT0.0245
Jefferson39CEDIT0.009
Jennings40CAGIT/CEDIT0.025
Johnson41CAGIT0.014
Knox42COIT/CEDIT0.017
Kosciusko43COIT/CEDIT0.01
LaGrange44CAGIT/CEDIT0.0165
Lake45CAGIT/CEDIT0.015
LaPorte46CAGIT/CEDIT0.0145
Lawrence47CAGIT0.0175
Madison48COIT/CEDIT0.0225
Marion49COIT0.0202
Marshall50CAGIT0.0125
Martin51COIT/CEDIT0.025
Miami52COIT/CEDIT0.0254
Monroe53COIT0.02035
Montgomery54COIT/CEDIT0.0265
Morgan55CAGIT/CEDIT0.0272
Newton56CAGIT0.01
Noble57CAGIT/CEDIT0.0175
Ohio58CAGIT0.015
Orange59CAGIT/CEDIT0.0175
Owen60CAGIT/CEDIT0.025
Parke61CAGIT/CEDIT0.0265
Perry62COIT/CEDIT0.014
Pike63CEDIT0.0075
Porter64CEDIT0.005
Posey65COIT/CEDIT0.0125
Pulaski66CAGIT/CEDIT0.0285
Putnam67CAGIT/CEDIT0.021
Randolph68CAGIT/CEDIT0.03
Ripley69CAGIT/CEDIT0.0138
Rush70CAGIT/CEDIT0.021
St. Joseph71COIT/CEDIT0.0175
Scott72COIT/CEDIT0.0216
Shelby73CAGIT/CEDIT0.016
Spencer74COIT/CEDIT0.008
Starke75CAGIT/CEDIT0.0171
Steuben76CAGIT/CEDIT0.0179
Sullivan77CEDIT0.017
Switzerland78COIT0.0125
Tippecanoe79COIT/CEDIT0.0128
Tipton80CAGIT/CEDIT0.026
Union81CAGIT/CEDIT0.02
Vanderburgh82COIT0.0125
Vermillion83CEDIT0.015
Vigo84CAGIT/CEDIT0.02
Wabash85CAGIT/CEDIT0.029
Warren86CAGIT/CEDIT0.0212
Warrick87CEDIT0.01
Washington88CAGIT/CEDIT0.02
Wayne89CAGIT/CEDIT0.0125
Wells90CAGIT/CEDIT0.021
White91CAGIT/CEDIT0.0232
Whitley92CAGIT/CEDIT0.016829

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