All sales are conducted online by nonprofit organizations. If a nonprofit organization is required to collect state and local sales tax at the rate based on their location, and you reside in the same state as the organization, it will be figured into your total at checkout. WinningCause.org is simply a software provider creating an online venue for nonprofit organizations to sell items online in auction. Since the nonprofit is the seller, they are responsible for withholding and paying sales tax to their state.
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