BetterWorld Books measures its social and financial success. It provides over $2 million annually to literacy non-profits. It offsets over 3,000 tons of carbon emissions and employs 150 people, many with training and benefits. A new social impact model ties funding for non-profits to 8% of gross profits rather than revenue. It also sets aside 5% of equity for non-profits based on improving literacy and generating book donations and revenue. This aligns incentives for both BetterWorld Books and its literacy partners.