“Terms of sale” are the basic and most important payment terms of your contract: cost, volume, delivery, payment method and date. They have to be crystal clear.
In your contact, trade credit materialises in a “line of credit”, which details how payment is scheduled over time. It differs from “payment in advance” (PIA) which involves payment before delivery, or from “cash on delivery” (COD) which means immediate payment upon delivery.
In the case of a line of credit, a client may negotiate a discount for early payment of the invoice, or a rebate if payment is made on time. This kind of mechanism can be highly virtuous: it encourages your client to pay quickly, and builds greater loyalty in the long run.
Example. A client is granted a trade credit with terms of “5/10 net 30”: if payment is made within 10 days, the client is offered a 5% discount. If not, the full amount is due within 30 days.
You can also negotiate a partial upfront payment or a deposit as a counterpart to longer payment terms.