What do the payment terms on my invoice mean?

Invoice Payment Term	Term Definition
PIA	Payment In Advance; you’re letting your client know you expect them to pay the total amount due for a project upfront, before you begin work.
CIA	Cash In Advance; you’re specifying both when you expect payment, i.e. before work begins, and you’re specifying how the client can pay you, i.e. in cash.
Upon Receipt	This means you expect payment immediately when the client receives your invoice.
Net 7	Payment is due seven days from the invoice date.
Net 21	Payment is due 21 days from the invoice date.
Net 30	Payment is due 30 days from the invoice date. This is one of the most common payment terms for small businesses and freelancers.
EOM	Payment is due at the end of the month in which the invoice is received.
15 MFI	Payment is due on the 15th of the month following the invoice date. MFI stands for Month Following Invoice.
2/10 Net 30	This is a variation of Net 30 that offers a discount for early payment. This payment term means payment is due within 30 days of the invoice date, but you offer a 2 percent discount off the invoice amount as a reward for paying within 10 days.
50 Percent Upfront	The client must pay 50 percent of the total invoice amount before work begins on the project. This is common for big projects that take several months to complete.