Final answer:
To offer a customer 30 days to pay an invoice, enter 'Net 30' on the invoice which informs the customer that the payment is due within 30 days from the invoice date.
Step-by-step explanation:
If you want to offer a customer 30 days to pay an invoice, you typically would enter this as "Net 30" on the invoice itself. This term indicates that the full payment is due within 30 days from the invoice date. This convention is commonly used in business and allows the customer to understand clearly when the payment is expected.
In other words, when the invoice is issued, make sure to include the payment terms prominently, possibly near the total amount due. The specific entry 'Net 30' should also be included in the payment terms section of the invoice. This way, there is no misunderstanding about the payment expectations.