11. Companies that paid higher audit fees were more likely to get an adverse opinion, DeFond's team concluded. 12. Fees for tax advice contributed about 23 percent of revenue, and audit fees accounted for about 40 percent of revenue. 13. Audit fees , which typically account for about half the revenue of the big accounting firms, rose just 7 percent.14. Today the ratio of consulting fees to audit fees paid by a client to its auditor is approximately three to one. 15. If non-audit fees are substantial in retaliation to audit fees suspicions will arise that auditing standards may be compromised. 16. If non-audit fees are substantial in retaliation to audit fees suspicions will arise that auditing standards may be compromised. 17. Aquila paid Andersen $ 2.4 million in audit fees and $ 15.6 million for other services last year. 18. The Commission estimated that audit fee savings at'up to 40 %'will arise as a result of these arrangements. 19. Critics say accounting firms are compromised because they make more money doing consulting work for their clients than they collect in audit fees . 20. The benefits of a pre-preferred bidder review is that it should lead to a reduced model audit fee at financial close.