facturado comes from factura
factura translation is bill,invoice,ticket.
factura is similar to boleta, which may also be translated as bill.
billed is most commonly used.

Invoiced and billed are both correct. People get bills and companies or business get invoices. Just a hint someone gave me once.

Good Luck, I hope it helps.

There is an important difference


Turnover is an internal company view i.e form the sales dept point of view, whereas invoiced amount is more a financial managers vision, and possibly the tax authorities.

you may try this one for the entire "volumen facturado"... :)

"facturado" can mean "yearly turnover"; eg. este año hemos factrado tres millones de dólares"; this year our turnover was 3 million dollars.

Here however it refers to part of the total amount sold in a year and not the whole year's sales.

Generally this is not referred to as "turnover" but amount invoiced and therefore sold.