A factoring relationship involves three parties: (i) a buyer, who is a person or a commercial enterprise to whom the services are supplied on credit, (ii) a seller, who is a commercial enterprise which supplies the services on credit and avails the factoring arrangements, and (iii) a factor, which is a financial ...
Invoice factoring is an agreement to assign your accounts receivable (A/R) to a factoring company. So the letter communicates that a third party (factoring company) is managing and collecting your A/R.