« All Events This event has passed. Metal Mines Gross Proceeds Tax March 31, 2023 @ 12:00 am - 11:59 pm « Monthly Cigarette and Tobacco Returns Due Tax Year 2022 Individual Income Tax Returns Due » March 31 Metal Mines Gross Proceeds Tax returns are due on March 31. Learn more about Metal Mines Gross Proceeds Tax. Available in our TransAction Portal File through our TransAction Portal (TAP). Local county treasurers collect MMG Tax. Contact your county for more information. Add to calendar Google Calendar iCalendar Outlook 365 Outlook Live Details Date: March 31, 2023 Time: 12:00 am - 11:59 pm Event Categories: Due Dates, Natural Resource Tax Event Tags:Metal Mines