Sellers are responsible for issuing refunds to buyers, including the tax portion of the payment. If the buyer is refunded and Bonanza collected the sales tax, the payment processor will deduct the sales tax portion of the order from Bonanza and refund it back to the seller's account. If the buyer receives a partial refund, the payment processor will deduct a proportional percentage of the sales tax from Bonanza and refund it back to the seller's account.
Learn more about sales tax and Bonanza on the following page: