Systems, methods, and computer-readable and executable instructions are provided for designing warranty bonuses. Designing warranty bonuses can include determining, for a customer base of a product, a first probability that a customer will replace the product with a different product. Designing warranty bonuses may also include determining, for the customer base, a marginal contribution to the first probability for a plurality of warranty bonus sizes and a plurality of warranty bonus types. Designing warranty bonus can include determining, for the customer base, a second probability that the customer will purchase a warranty for the plurality of warranty bonus sizes and the plurality of warranty bonus types. Designing warranty bonuses may also include bundling the product and the warranty, and assigning a number of the plurality of warranty bonus sizes and a number of the plurality of warranty bonus types to the product-warranty bundle based on the first and second probabilities and the marginal contribution.