Accounts receivable is a crucial process for small businesses that involves sending invoices, tracking payments and due dates, and pursuing late payments. It requires keeping records of invoices and payments, generating aging reports to identify late invoices, and having a policy for following up on overdue invoices such as sending reminders and charging late fees. If invoices remain unpaid, businesses may write them off as bad debts or sell the invoices to a collection agency or to secure financing. Managing accounts receivable effectively through credit checks, payment agreements, and payment options can help maximize on-time payments and cash flow.