Abstract: A method and system for sponsored online fundraising in relation to an offer for purchase provided by a retailer, the fundraising campaign, the fundraising service and the retailer having respective account balances. The method comprises matching retailer offers against the fundraising campaign specifying a plurality of campaign criteria; generating a plurality of offers for purchase from among the retailer offers; selecting at least one offer for purchase from among the generated offers for purchase; publishing a fundraising campaign promoting the at least one offer; selecting and purchasing the offer promoted by the fundraising campaign; generating a voucher specifying the monetary value of the purchased offer; redeeming the voucher via a purchase transaction with the retailer, and allocating, from at least a portion of the monetary value, a first payment to the fundraising campaign account balance and a second payment to the fundraising service account balance.