Delaware Tax Office Phone Numbers

Type of Tax   Telephone Number
DE Personal Income Tax Assistance       302.577.8200
DE Business Tax Assistance       302.577.8205
DE Collections/Account Management       302.577.8785
Installments       302.577.8586
DE Business License Assistance       302.577.8778
DE Corporate Tax Auditors       302.577.8783
DE Corporate Tax Refund/Returns       302.577.8781
Gross Receipts       302.577.8780
DE Personal Income Tax Auditors       302.577.8994
Refund Assistance       302.577.8784
DE Unclaimed Property/Escheat       302.577.8782
DE Withholding Tax       302.577.8779


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