What is the difference between a seminar and a conference?

A conference is a collaborative effort among peers or members of a group. A seminar is an educational meeting where outside experts or professionals may also present information, news, or commentary.

The two may also be defined differently for tax purposes. For example, an accounting conference is subject to a 50% deduction classification on a tax return. A seminar, however, is considered educational, as part of personal professional development or continuing education, providing a 100% deduction on a tax return.