Exhibit 21.1

List of Subsidiaries of Gold Banc Corporation, Inc.

|GBC Kansas, Inc., a Kansas corporation
Gold Bank, a Kansas bank
    Gold IHC-I, LLC, a Delaware limited liability company
        Gold RE Holdings-I, LLC, a Delaware limited liability company                                                                                                                                                                                                                                                       
|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
|GBC Oklahoma, Inc., a Kansas corporation
Gold Bank, an Oklahoma bank
        Gold-BK Holdings, Inc., a Nevada corporation
        Central Oklahoma Leasing Authority, Inc., an Oklahoma corporation                                                                                                                                                                                                                                                   
|GBC Florida, Inc. a Kansas corporation
American Bank, a Florida bank
ABI Capital Trust, a Delaware business trust                                                                                                                                                                                                                                                                                                                                     
|Gold Financial Services, Inc., a Kansas corporation
Gold Trust Company, a Missouri corporation
Gold Capital Management, Inc., a Kansas corporation
Gold Insurance Agency, Inc., a Kansas corporation
Gold Merchant Banc, Inc., a Kansas corporation
Gold Investment Advisors, Inc., a Kansas corporation
GBS Holding Company, LLC, a Kansas limited liability company (75% member interest)
Gold Title Agency, LLC, a Kansas limited liability company
|Gold Reinsurance Company, Ltd. a Turks and Caicos Islands corporation                                                                                                                                                                                                                                                                                                                                                                                 
|CompuNet Engineering, Inc. a Kansas corporation                                                                                                                                                                                                                                                                                                                                                                                                       
|Regional Holding Company, Inc., a Kansas corporation
Gold Banc Mortgage, Inc., a Kansas corporation
Realty Escrow Services, Inc. a Kansas corporation                                                                                                                                                                                                                                                                                                 
|GBC Capital Trust, a Delaware business trust                                                                                                                                                                                                                                                                                                                                                                                                          
|GBCI Capital Trust II, a Delaware business trust                                                                                                                                                                                                                                                                                                                                                                                                      
|Gold Banc Acquisition Corporation VIII, Inc., a Kansas corporation                                                                                                                                                                                                                                                                                                                                                                                    
|Gold Banc Acquisition Corporation X, Inc., a Kansas corporation                                                                                                                                                                                                                                                                                                                                                                                       

90

---

QuickLinks