How to Calculate Salary Taxes In Colorado

No Pre-Tax Deductions

Calculate Medicare taxes, which is 1.45 percent (.0145) of the employee's gross earnings. For instance, if your gross salary is $1,200, the employer will take 1,200 x .0145 = $17.40.

Figure the social security tax, which is 6.2 percent (.062) of the employee's gross earnings. For social security, the employer will take 1,200 x .062 = 74.40.

Calculate the federal taxes by using the IRS Publication 15-T, which is the withholding table for figuring federal tax liability. Since there are no pre-tax deductions, the entire gross pay is subject to tax. For this instance, the employee has no federal allowance and is single. Find the table in the publication for a single person receiving salary. Find the gross amount in the table with zero allowances and the tax liability is $132.38.

Figure the Colorado state tax liability by using 4.63 percent (.0463) of the federal tax liability. For this example, it will be 1,200 x .0463 = 55.56.

Subtract the calculations from the gross pay to determine net pay. For this example, take 1.200 (gross) -- 17.40 (Medicare) -- 74.40 (social security) -- 132.38 (federal) -- 55.56 (state) = 920.26 (net).

With Pre-Tax Deductions

Calculate Medicare taxes, which is 1.45 percent (.0145) of the employee's gross earnings. For instance, if your gross salary is $1,200, the employer will take 1,200 x .0145 = $17.40. Note: Medicare is taxed on the gross before any pre-tax deductions.

Figure the social security tax, which is 6.2 percent (.062) of the employee's gross earnings. For social security, the employer will take 1,200 x .062 = 74.40. Note: Social security is taxed on the gross before any pre-tax deductions.

Calculate the federal taxes by using the IRS Publication 15-T, which is the withholding table for figuring federal tax liability. Because the employee contributes $50 a pay day to a 401K, the federal tax is figured like this: 1,200 -- 50 = 1,150. Find the table for a single salaried person with no allowances, which is 124.88.

Figure the Colorado state tax liability by using 4.63 percent (.0463) of the federal tax liability. The federal gross is $1,150 because of the pre-tax deduction. The state tax is figure like this: 1,150 x .0463 = 53.25.

Subtract the calculations from the gross pay to determine net pay. For this example, take 1.200 (gross) -- 50 (pre-tax) -- 17.40 (Medicare) -- 74.40 (social security) -- 124.88 (federal) -- 53.25 (state) = 880.07 (net).