Is it proper to put BS after ones name when one only has a degree?

It is generally not appropriate to use the designation "BS" after one's name when one has only a bachelor's degree. The abbreviation "BS" is commonly used to indicate a Bachelor of Science degree, but it is not a professional designation or title.

In most cases, it is more appropriate to simply state your name and the degree that you have earned. For example, you could say, "John Smith, Bachelor of Science in Business Administration."

There are some instances in which it may be acceptable to use the abbreviation "BS" after your name, such as in a casual or informal setting where the context is clear. However, it is generally best to avoid using "BS" after your name unless you have explicitly earned a Bachelor of Science degree.