Spread the refried beans evenly across the bottom of a medium serving dish.
Stir the taco seasoning into the sour cream until fully blended. Spread this mixture over the beans.
Spoon the guacamole in an even layer on top of the sour cream.
Add the salsa as the next layer and smooth it gently with the back of a spoon.
Sprinkle the shredded cheddar cheese over the salsa.
Scatter the diced tomatoes, sliced black olives, and green onions on top.
Serve with tortilla chips on the side for dipping.