How to handle returns in LiteCart?

I sometimes receive questions how returns can be handled in LiteCart or if there is an add-on to handle returns.

LiteCart doesn't have a system for returns. I simply think we don't need one.

To register a return in LiteCart create a new order with the returned quantity amount as a negative number e.g. -1. Yes you are selling -1 products. Give the order an order status e.g. Returned and make sure the order status is marked as sale (to reserve stock). The negative amount will reinsert the quantity to stock rather than withdrawing. Your sales will from the order date be lowered with the negative order total.

Simple as that :)