When a customer receives their Instacart order, they get an email receipt of everything they paid for. In this sense, you don’t really have to keep your receipts. However, it’s good practice to hold onto your shopper receipts for at least a week or so until Instacart pays you. You never know when there could be a crazy customer who insists they didn’t get a particular item, or there’s a question about an order, so better safe than sorry on this front! Plus, as we’re about to find out, keeping your shopping receipts can also help you score some free money.