NationsBank Corp. is continuing to expand abroad in advance of its  pending merger with BankAmerica Corp. 
Charlotte, N.C.-based NationsBank announced last week that it is setting  up a Cayman Islands subsidiary as its main international banking unit, with   affiliated operations in Dublin and Amsterdam.   
  
BankAmerica, which is scheduled to merge with NationsBank at the end of  the third quarter, already has an office in the Cayman Islands. 
NationsBank executives were unavailable for comment on the announcement.
  
However, Richard Gross, president of NationsBanc Montgomery Securities,  indicated to news agencies that fast growth in international business was   prompting NationsBank to forge ahead on its own.   
He added that the subsidiary will be used primarily to reduce funding  costs and will also help NationsBank cut taxes and operate with simpler   banking regulations than in the United States.   
Funding from offshore locations such as the Cayman Islands is less  costly because lower reserve requirements are imposed and low taxes let   depositors accept lower returns.   
  
The complex structure would also let NationsBank benefit from tax  advantages. In Dublin, for example, it would pay only 10% on its earnings,   compared with 35% in the United States.   
The Cayman Islands unit, to be known as Nations Finance (Cayman) Ltd.,  will get $2 billion of initial funding from NationsBank. Of that, $1.5   billion will be used to fund the Amsterdam unit, which will in turn use   $500 million to fund the Dublin unit.     
All three units will use the funds to make loans and engage in swaps or  other types of transactions. 
BankAmerica has by far the larger international business, with  operations in 38 countries. The North Carolina company has offices in 14   countries and this year bought a majority stake in Brazil's Banco Liberal.   
  
Though NationsBank has a smaller presence abroad, its foreign operations  have been growing rapidly since it began assisting U.S. corporations making   investments or acquiring companies overseas.