Employers are required to withhold on an amount equal to the qualifying wages of the employee earned by that employee in the municipality multiplied by the rate of 2.5%. Qualifying wages are defined in Columbus Code 362.03(FF). Typically, this is Box 5 Medicare wages, but may also include other income not reported in Box 5 of the W-2. City taxable wages include all wages that may be deferred or excluded from Federal and State taxable wages under §401 of the Internal Revenue Code. These deferrals appear in Box 12 of your W-2 with codes D, E, F, G and S.
If you earn your wages in Columbus, look at your W-2 or paystub and compare Box 1/Federal Wages, Box 5/Medicare wages and Box 18/Local wages. Multiply the largest of these wage figures by the Columbus tax rate of 2.5%. The result should equal the local Columbus tax withheld from your wages.
Columbus residents pay a total of 2.5% in taxes on all income earned, regardless of whether it was earned in Columbus or another city. When Columbus residents earn income in another city and pay taxes to that city, Columbus provides 100% credit for tax paid up to 2.5%. Taxable income includes all salaries, wages, commissions and other compensation, before any deduction for such things like 401(k) deferrals, regardless of where it was earned.