Is a business license needed to form a Women's Empowerment Group?

Is a business license needed to start a Women's Empowerment Group? All group members will be required to pay a membership fee. There is a fee to participate in group activities such as networking dinners, luncheons, seminars, and workshops. The group will meet once per month. Membership will be open to any woman who has a desire to receive knowledge on how to grow personally, financially, spirtually, and socially.