December 20 - IT-6 Corporate Adjusted Gross Income Tax Quarterly Payment (Calendar Year Corporation)

FT-QP Financial Institution Tax Quarterly Payment (Calendar Year Corporation)

URT-Q Utilities Receipts Tax Quarterly Payment (Calendar Year Corporation)

December 20 - ST-103/WH-1 (Sales/Use and Withholding Tax) Early Filer Tax Returns

December 25 - ST-103P Prepaid Sales Tax on Gasoline (Second Filing)

December 30 Monthly Trust Tax Returns for November
ST-103 CIT-103
WH-1 FAB-103
MVR-103/MVR-103CS

ST-103NQ Recap Filed by Non-Qualified Distributors (November)

ST-103Q Recap Filed by Qualified Distributors (November)

December 30 - MCFT-101 Intrastate Motor Carrier Fuel Tax Quarterly Return

IFTA-101 International Fuel Tax Agreement Quarterly Return

Form 1789 Proportional Use Claim

December 10 - SW-100 Solid Waster Disposal Fee Return

December 15 - SF-701 Previously Untaxed Fuel Monthly Return

SF-900 Special Fuel Consolidated Monthly Tax Return (First installment payment for EFT)

UST-2 Underground Storage Tank Fee (First Installment)

December 20 - MF-360 Gasoline Distributor's Consolidated Monthly Tax Return

SF-501 Terminals Operator's Monthly Return

SF-900 Special Fuel Consolidated Monthly Tax Return (Second payment)

HW-020 Quarterly Hazardous Waste Tax Return - 4th Quarter

December 25 - SF-401 Special Fuel Transporter Return

December 30 - MF-600 Petroleum Severance Tax Return

ABP1-B (Primary Source Suppliers' Monthly Information Report for Beer & Malt)

December 15 - OTP-906 Other Tobacco Products Tax Return

CT-5 Licensed Cigarette Distributor's Monthly Cigarette Tax Return

CT-24 Out-of-State Licensed Cigarette Distributor's Monthly Cigarette Tax Return

December 20 - Form 810 Beer Wholesalers' Excise Tax Report

Form 725 Indiana Small Winery Excise Tax Report

Form 910 IN Brewers Excise Tax Report