Find your local Federal and State Tax Office here! Not a government website.

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




151 Responses to Click to Tell Us Your Experience At Your Local Tax Office

  1. Please see contact information for the IRS regarding your refund.
    Individuals
    800-829-1040
    7 a.m. to 7 p.m. local time

    Businesses
    800-829-4933
    7 a.m. to 7 p.m. local time

    Non-profit taxes
    877-829-5500
    8 a.m. to 5 p.m. local time

    Estate and gift taxes
    866-699-4083
    8 a.m. to 3:30 p.m. Eastern time

    Excise taxes
    866-699-4096
    ​​​​​8 a.m. to 6 p.m. Eastern time

    Overseas callers
    Use our International Services page.

    Callers who are hearing impaired
    TTY/TDD 800-829-4059

    Requesting a face-to-face meeting for help
    You can make an appointment at an IRS local office to get help. Appointment times vary by tax issues and office locations.

    You can find the office closest to you with our Taxpayer Assistance Locator tool. Once you find your local office, call 844-545-5640 to schedule an appointment.

    IRS offices are closed on federal holidays.

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