Membership is valid for one year from the date dues are received. All dues are nonrefundable. AWIS Seattle Area Chapter is a 501(c)(3) tax exempt organization: TIN #52-1441206. Your AWIS Seattle Area Chapter membership may be tax deductible under Section 162 of the U.S. Internal Revenue Service Code. Donations made to AWIS Seattle Area Chapter are charitable for federal tax purposes. Check with your tax professional to determine the appropriate deduction.