The extent of realignment among the commercial banking elite became  palpable last year in an unprecedented consolidation of automated clearing   house payments.   
American Banker's annual survey of paperless debit and credit  originations-a window on wholesale activities that have been ahead of other   banking businesses in economies of scale and market concentration-indicated   that five companies were responsible for 40% of the transactions.     
  
The five-firm concentration rose from 38.6% in 1996 and 37.7% in 1995.  The companies flexing those muscles are the same ones that have been making   waves on the merger scene or busily rooting out the cost benefits of past   combinations.     
After the perennial champion Chase Manhattan Corp., which doubled its  ACH growth rate and thus widened its lead in 1997, the next four in   consolidated volumes were quintessential superregionals: Norwest Corp.,   Banc One Corp., First Union Corp., and NationsBank Corp.     
  
Year in and year out, these and a few others vie for, and often succeed  at winning, corporate services business that historically went to money-   center institutions. It is well recognized how these companies bulked up in   recent mergers, but asset or deposit size is only a rough measure of their   ability to play where the wholesale stakes are highest.       
Automated clearing house originations provide a more refined view, and  the big mergers' effects are clear. 
The 1996 merger of Chase with Chemical Banking Corp.-the old Chemical  was the acquirer but was second-tier in the ACH-was motivated by a desire   to exploit the advantages of scale throughout the enterprise, top managers   said. The new Chase saw a spurt in ACH volume of 43% over two years. (That   is adjusted for the merger, with Chemical and Chase treated as one in 1995.   Unadjusted, Chase's 429.9 million items in 1997 were up 88%.)         
  
Whereas the old Chase alone had 9.99% of the market in 1995, the new,  No. 1-ranked U.S. bank holding company claimed 14.28% of private-sector   originations in 1997, as counted by the National Automated Clearing House   Association. That rose from 13.26% in 1996, and Chase's share of total U.S.   bank assets is still well below 10%.       
The Chemical deal brought a "strong middle-market, public-sector, and  small-business franchise," said Marcie Haitema, vice president and division   executive at Chase's ACH operation in Tampa.   
That was one of several reasons behind Chase's 27% increase in  originated payments, 10 points better than 1997's industry norm. Ms.   Haitema also cited "tremendous growth" in direct payroll deposits. That   pushed Chase well past Norwest in ACH credits-they were about even in 1996-   matching its long-held No. 1 rank in automatic debits.       
"Without revealing our cost structure, I can tell you that it has grown  at a tiny rate compared to transactions over the past five years," Ms.   Haitema said. "That makes the people I report to very happy, and it gives   us a competitive edge."     
  
A capacity to attract additional volume at a low marginal cost  characterizes all of the leaders. Eight holding companies, two more than   last year, registered consolidated payments in excess of 100 million items.   
First Union Corp. made a notable surge into fourth place from eighth by  growing 86%, to 146.3 million ACH initiations. Counting the 55.7 million of   pending merger partner CoreStates Financial Corp., as does the American   Banker ranking accompanying this article, First Union vaulted past the 200   million threshold and was less than half a million behind No. 3 Banc One.       
First Union had its sights on the top five, said corporate treasury  executive Lee Madden. It got there as "a customer win from late 1996 had   its full impact, and we worked hard on quality," he said.   
First Union ranked third in ACH credit items, behind Chase and Norwest.  It edged past Norwest with CoreStates' volume consolidated. Though much   smaller than its acquirer, Philadelphia-based CoreStates has a customer   list and international presence that strengthens First Union's commercial   banking and payments credentials.       
Separated out from their holding companies, six banks, up from three  last year, surpassed the 100 million mark. Only Chase Manhattan Bank and   Norwest Bank Minnesota were better than 200 million. But given the trend   toward consolidation of ACH operations within holding companies, and the   fact that these larger organizations have come to the fore as marketing   entities, the American Banker ACH survey focuses for the first time on   consolidated totals, including those of combinations pending at yearend   1997, such as First Union-CoreStates.             
As recently as 1993 and 1994, the top five holding companies together  accounted for one-third of the interbank ACH debits and credits originated   in the private sector. In each of those years, the private-sector total was   under two billion.     
Then as now, the best-known uses of the system were automatic payrolls  and direct government benefit deposits like Social Security, which are   classified as credit items. Direct, recurring deductions from payers'   accounts, such as the insurance premium payments pioneered by Chase that   accounted for much of its record-setting 1997 volume of 429.9 million, are   classified as debits.         
The government entries, which do not count as private-sector  originations, grew 8.5% last year, to 678 million, said the National   Automated Clearing House Association.   
Depository institutions' originations in 1997 rose about 17%, to 3.01  billion items, Nacha said. They passed three billion two years after   surpassing two billion.   
Including 861 million "on-us" items-those that are both originated and  received within the same financial institution-the private-sector volume   rose 17.2%, to 3.87 billion.   
The commercial plus government grand total was up 15.8%, to 4.55  billion. 
Annual ACH growth has been around 17% for four years. That constitutes a  growth market by any conventional measure, but expectations have been   greater. Optimists are still anticipating an explosion, possibly fueled by   the federal mandate that virtually all government payments be made   electronically next year, and by commerce on the Internet.       
The companies that have built scale in the ACH business, and in payment  and cash management services generally, have been able to grow at least as   fast as the market.   
NationsBank Corp. came in right at 17%, but it fell one place, to No. 5,  because of North Carolina-based archrival First Union's jump to No. 4.   Barnett Banks Inc. of Florida, which Nations acquired in January, generated   a marginal percentage of the transactions. Boatmen's Bancshares of St.   Louis, a 1997 acquisition and a top-20 ACH player, was a much bigger   contributor to NationsBank's scale.         
Northern Trust Corp. of Chicago, asserting its corporate banking and  trust credentials, boosted credits by 41% and its total by 37%, to 118.4   million, to hold seventh place. Fleet Financial Group of Boston, a product   of megamergers in recent years, rose 28% and three places among holding   companies, to No. 9.       
Citicorp of New York, which puts a majority of its volume through a  corporate banking unit in Delaware, posted one of its best growth rates in   years-19%, to 70.6 million-and rose three places, to No. 11.   
Wells Fargo & Co., which suffered a 14% decline in 1996 that reflected  business lost in its merger with First Interstate Bancorp, slowed the   runoff to 5% in 1997. At 67.4 million total items, it was just behind   Citicorp at No. 12; in 1995 Wells was No. 6.     
Banc One Corp., one of the first to gain elite ACH status through  acquisition-its lead originator, Bank One Illinois, has been second or   third in debits ever since its days as the relatively obscure Marine Bank   of Springfield-grew only 9% last year. But behind the scenes, the holding   company is taking advantage of its geographical reach and converting as   many items as it can to on-us status.         
Like other superregionals whose corporate clients are completing more  and more electronic transactions with the same banks' retail customers,   Banc One cuts costs by keeping the exchanges "within the family." J.P.   McClernon, national ACH operations manager, said that with on-us included,   Banc One was up 25% last year.       
Norwest, which grew a respectable if below-average 13% in interbank  items, has also been emphasizing on-us, and is poised for new forms of   growth. The bank has been active in check truncation pilots, in which   checks are converted to ACH debits at the point of sale, and senior product   manager Keith Theisen has been spearheading an industry project to handle   redeposits of returned checks paperlessly.         
Such applications could double or triple ACH volume, he said, and  Norwest has built its capacity up to two million transactions an hour to   set itself apart from older systems. "The technology and the rules are   catching up to the opportunities," he said.     
"We have an opportunity to expand and build on the ACH in ways not even  contemplated today," said Mr. Theisen's boss, senior vice president Scott   Peterson. "Given the Internet and the use of personal computers to initiate   payments, we will see more and more creative uses of the ACH."     
One of those uses-settlement of credit card and automated teller machine  network transactions-put First National Bank of Omaha, EFS National Bank of   Memphis, and First Premier Bank of South Dakota in the top 50. Add to those   American Security Bank of Ville Platte, La. Its holding company became No.   50 after acquiring a Georgia bank's division that services ATM networks.