Can you substitute margarine with butter for scones?

Margarine can be substituted for butter in most cases. Sometimes a recipe states that no substitution is allowed. When the recipe calls for unsalted butter it will change the taste, and then you can use less salt in the recipe and equal out. Butter does have a distinct flavor that is best in cookies, but using margarine won't change the consistency.

A bit more:

Margarine has a higher water content, so it won't give the same results with many recipes as butter, and can affect both taste and texture. Pie crust and some cookies are good examples of this, also many cake recipes don't allow for substitution.