If cash flow can decrease drastically, the business will find it needs large amounts of cash from either existing cash balances or from a factor to cover its obligations during this period of time. Likewise, the longer a relatively low cash flow can last, the more cash is needed from another source (cash balances or a factor) to cover its obligations during this time. As indicated, the business must balance the opportunity cost of losing a return on the cash that it could otherwise invest, against the costs associated with the use of factoring.