- Accounting. Auditor's certificate in which no irregularities are disclosed. Also called an unqualified opinion.
- Banking. To be free of debt, as during a borrower's annual clean-up period when bank lines of credit are paid down to a zero balance owed. See also clean-up requirement.
- International Trade. A bill of exchange, draft, or letter of credit without shipping documents attached, usually issued to organizations with good credit.
Accounting:unqualified audit report; called a clean opinion. See also qualified opinion.
Finance:free of debt, as in a clean balance sheet.
International trade:without documents, as in clean versus documentary drafts.
Securities:block trade that matches corresponding buy or sell orders, thus sparing the block positioner any inventory risk.
Finance: free of debt, as in a clean balance sheet. In banking, corporate borrowers have traditionally been required to clean up for at least 30 days each year to prove their borrowings were seasonal and not required as permanent working capital.
International trade: without documents, as in clean vs. documentary drafts.
Securities: block trade that matches buy or sell orders, sparing the block positioner any inventory risk. If the transaction appears on the exchange tape, it is said to be clean on the tape. Sometimes such a trade is called a natural: "We did a natural for 80,000 XYZ common."

