What is the last day i can buy my boise river zone A tag for archery elk

If you are a resident, you can purchase the tag through the last day of the hunt. If you are a nonresident, you can do the same as long as the nonresident tag quota has not been sold out. For quota information please visit this page for nonresident inforamtion https://fishandgame.idaho.gov/content/license/nonresidentTagAvailability or this page for resident tag information https://fishandgame.idaho.gov/content/license/residenttagavailability.