Ohio

Jan 28, 2021 · If you need to correct the IT 1040, IT 1040EZ, or SD 100 after the department has processed the e-Filed return(s), please file an amended return (IT 1040X/SD 100X) by mail. Applicants and participants may inquire about filing and paying any outstanding income tax liabilities by contacting the Ohio Department of Taxation . at (800) 282-1780. ................
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