​​​​​​​​​​​​​NOTE: If a return due date falls on a scheduled holiday or weekend, returns will be due the next working day.


August 10

  • Twice-Monthly Income Tax Withholding Return (July 16—July 31 payment)
  • Legal Process

August 17

  • Corporation Income Tax/LLET and Pass-through Entity Return and Payment Due (FY ending 4/30)
  • Estimated Corporation Income Tax/Limited Liability Entity Tax/One Fourth Estimate (FY ending 4/30)
  • Estimated Corporation Income Tax/Limited Liability Entity Tax/One Fourth Estimate (FY ending 2/28)
  • Estimated Corporation Income Tax/Limited Liability Entity Tax/One Fourth Estimate (FY ending 11/30)
  • Estimated Corporation Income Tax/Limited Liability Entity Tax/One Fourth Estimate (FY ending 8/31)
  • Franchise Tax and Local Bank Deposits Return
  • Monthly Income Tax Withholding Return (July payment)
  • Motor Vehicle Usage Tax—Loaner/Rental
  • Nonresident Withholding Tax Return and Payment Due (FY ending 4/30)

August 20

  • Alcohol Tax
  • Cigarette Wholesaler
  • Coal Severance Tax Return (July payment)
  • Commercial Mobile Radio Service (CMRS) 911 Charge
  • Consumer Use Tax
  • Health Care Provider Tax
  • Insurance Premium Surcharge
  • Motor Vehicle Rental/Ride Share Tax
  • Oil Production Tax Return (July payment)
  • Sales Tax (Monthly)
  • Sports Wagering Excise Tax
  • Telecommunications Tax
  • Tobacco and Vapor Products, Snuff, and Chewing Tobacco
  • Transient Room Tax
  • Utility Gross Receipts License Tax
  • Waste Tire Fee

August 25

  • Electric Vehicle Power Excise Tax
  • Motor Fuels Tax
  • Sales Tax Accelerated Filers
  • Twice-Monthly Income Tax Withholding Return (August 1—August 15 payment)

August 31

  • Minerals and Gas Severance Tax Return (July payment)

2026​ Tax Calendar

   January
   February
   March
   April
   May
   June
   July
   September
   October
   November
   December