Add 2 cups sugar and 2 cups filtered water to a medium saucepan and bring to a boil, stirring from time to time as it heats up.
Once the mixture boils, remove the saucepan from the heat and turn off the burner.
Place four tea bags into hot syrup in saucepan, making sure they are submerged, and allow to steep for 10 minutes.
Remove tea bags, stir, and allow syrup to cool for about 45 minutes before using in margarita.
Store syrup in airtight container in the refrigerator for up to one week.
*You will likely have leftover syrup, which you can use in another batch of margaritas, or to add to other drinks such as sparkling water.