By law, your employer is only required to withhold for the work location city, although many will
voluntarily withhold for the resident city as well. So, you'll have to ask your employer (it will be readily apparent on your first pay check-pay stub). Most small employers will only withhold for the work city. It's too much paperwork to do both.
You normally only have to
file a return in the city you live in. It is not necessary to file one in the
city you work in, if different. Your employer will remit withholding to the
city you work in, but you do not file a return unless you're claiming a refund or your employer didn't
withhold enough ( both highly unusual). The city you live in will allow a
credit or partial credit for the withheld tax you paid to the work location
city.
If you moved to West Chester, from Fairfield, in 2018, you will have to file returns in both cities, for 2018. You will have file as a part year resident of each. This assumes both cities have a City Income Tax.
To verify or find out if
you live in a school district or city with an income tax enter your address at:
http://www.tax.ohio.gov/Individual/LocalTaxInformation.aspx
