Attention: All DOR customer walk-in centers are now open for in-person assistance on an appointment only basis.Find out more DOR Home Information for Tax Professionals Subscribe to Updates Project NextDOR Tax Practitioner Resource Packet Tax Rates by Indiana County Tax Professional Basics Annual Tax SchoolsAudit ManualCollection ProcessFAQsPower of Attorney ProceduresRefund Status Forms All Tax FormsAnnotated Tax FormsOrder Tax FormsWH-3 E-Filing Online Services Corporate E-FilingCertified Software DevelopersTax Payment ServicesPayment-Sales/Withholding TaxPayment-Tax Bills Tax Information Tax Bulletin E-NewsletterTax LibraryTax Professionals Inquiry CenterTax Rates, Fees and PenaltiesVolunteer2019 Legislative SynopsisTax Deadline PDF
