Working capital management involves maintaining adequate current assets to fund daily operations while balancing carrying costs of holding excess inventory or receivables with shortage costs from stock-outs. The operating cycle of a firm from raw material purchase to cash collection affects how efficiently working capital is used. Factoring involves selling accounts receivable to a financial institution to access cash faster at the cost of a fee paid to the factor. Inventory policy must consider costs of holding inventory as well as ensuring adequate supply to meet production needs. Sources of working capital financing include equity, debt, trade credit, bank loans, and factoring.