Kmart now offers shipping returns for the convenience of the customer. Shipping labels can be printed out online, and shipping charges will be deducted from the total refund. Customers should include the receipt in the return package to ensure efficient turn-around time. It is important that merchandise be packaged properly to reduce the chances of it becoming damaged in transit. Most returns are sent via UPS.

Kmart offers a 90-day guarantee on most merchandise, although the original receipt is required for all products. Consumers may also be asked to present a photo ID when requesting a refund or an exchange. Merchandise must be in original packaging and all accessories must be present for the refund or exchange to be issued.

Some merchandise cannot be returned it the items have been removed from their packaging. These items include movies, music, video games and computer software. Prescription drugs and special-order jewelry are not eligible for refund or exchange.