Bottom line: you have to file a Geneva return and pay Geneva city tax.
If you physically work in Geneva, at your employer's facility, your employer is required to withhold the correct city tax so that you should not have to file. But since they didn't, you do have to file.
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.
You cannot prepare a Geneva return in TurboTax. You will have to contact the city for forms.
