PARIS, May 30 (Reuters) - Investment banks' high underwriting fees for raising fresh capital for companies are "akin to tacit collusion" and merit review by competition authorities, the OECD said on Tuesday.
The Paris-based Organisation for Economic Co-operation and Development said that underwriting fees were by far the largest direct cost for an initial public offering and were an often neglected explanation for a drop in overall IPO issuance numbers.
Not only were fees high, but the OECD said it saw signs of parallel pricing, when there is little divergence in prices between companies supposed to be competing.
"High levels of fees and parallel pricing (akin to tacit collusion) appear to have increased. This increases the cost of equity and works against long-term productive investment," the OECD said in its annual Business and Finance Outlook.
It quoted data showing the median underwriting fee for IPOs in the United States is 7 percent of total proceeds from the IPO and has risen to 8 percent in Japan and China, doubling in the case of China within a couple of years.
At the same time, European issuers have consistently paid less, with IPO underwriting fees running around only 3 percent.
"A deeper assessment of the competitive conditions in these markets may be valuable," the OECD said, adding that authorities could take anti-cartel measures if they found evidence of collusion. (Reporting by Leigh Thomas; Editing by Mark Trevelyan)