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How to Calculate 2018 Utah 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 Utah 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 Utah small businesses here.
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Utah State Tax Tables

Tax rate used in calculating Utah state tax for year 2018

State Abbreviation:


State Tax Withholding State Code:


Acceptable Exemption Form:


Basis For Withholding:

Federal Exemptions

Acceptable Exemption Data:

>S, M/Number of Exemptions <

TSP Deferred:


Special Coding:


Additional Information:


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Withholding Formula >(Utah Effective 2018)<
  1. Subtract the nontaxable 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 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 by 26 to obtain the annual wages.
  5. >Multiply the annual taxable wages by 5.0% to determine the annual gross tax amount.<
  6. >Calculate the annual gross withholding allowance.

    a. Multiply the number of withholding allowances claimed by $125 to determine the annual gross withholding allowance.

    b. Add the following Base Allowance to the annual gross withholding allowance:

    Marital Status: Base Allowance:
    Single $ 250
    Married 375<

  7. >Calculate the annual withholding allowance reduction.

    a. Subtract the following amount from the employee's annual taxable wages, but not less than zero:

    Marital Status: Amount:
    Single $ 12,000
    Married 18,000

    b. Multiply the amount calculated in Step 7a by 1.3% to determine the annual withholding allowance reduction. <
  8. >Subtract the annual withholding allowance reduction from the annual gross withholding allowance, but not less than zero. This is the annual net withholding allowance.<
  9. >Subtract the annual net withholding allowance from the annual gross tax amount to determine the employee's annual net tax.<
  10. Divide the annual Utah tax withholding by 26 to obtain the biweekly Utah tax withholding.

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