Q. So my specific question was what to put under "Tax Computed on Your Ohio Return".
A. Only the box 17 amount, $500 in your example.
Ohio city income tax is not administered by the State Dept of Taxation (ODT).
If you did not physically work in Mason, you can get a separate refund from the city, not ODT. Contact the city for the proper form.
https://imaginemason.org/services/tax-information/
513.229.8535
