Audit services help companies ensure that their accounting records accurately reflect the transactions they have made. Audit services help companies create compliant financial statements and communicate with banks, investors and other financial partners about the health of their finances. Accountants are responsible for preparing financial documents, monitoring the daily accounting of a company's operations, and/or preparing and filing tax forms. Auditors check the accuracy of financial statements and tax returns and may look for clues as to why some numbers don't add up.