Trade discount and cash discount are terms you do not usually hear but are done, especially if you are doing business. The seller generally offers a trade discount to its customer before making the final purchase. The total amount is computed, and the seller will give a discount (ex. 10% off from the total amount) to encourage the buyer to make it a deal.
This kind of discount helps sellers and wholesalers to obtain a loyal customer and make more purchases (at that moment or in the future). Cash discount, on the other hand, is given to the buyer to encourage them to pay in cash as soon as possible. This is usually recorded in the seller’s accounting books as discount allowed and discount received must be filed by the buyer.