Exhibit 16 POWERS OF ATTORNEY IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Peter R. Brown ---------------------------------------- Peter R. Brown Trustee and Vice Chairman Date: August 31, 2002 TRANSAMERICA IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and BRIAN C. SCOTT, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of Transamerica IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Robert L. Anderson, Ph.D. ---------------------------------------- Robert L. Anderson, Ph.D. Trustee Date: August 17, 2005 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Daniel Calabria ---------------------------------------- Daniel Calabria Trustee Date: September 2, 2002 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, her true and lawful attorneys and agents in her name, place and stead and on her behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Janice B. Case ---------------------------------------- Janice B. Case Trustee Date: September 5, 2002 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Charles C. Harris ---------------------------------------- Charles C. Harris Trustee Date: September 29, 2002 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Leo J. Hill ---------------------------------------- Leo J. Hill Trustee Date: September 4, 2002 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Russell A. Kimball, Jr. ---------------------------------------- Russell A. Kimball, Jr. Trustee Date: September 7, 2002 TRANSAMERICA IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER his true and lawful attorney and agent in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of Transamerica IDEX Mutual Funds (the "Fund") under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorney may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind he may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of said attorney and agent hereunder. /s/ Norm R. Nielsen ---------------------------------------- Norm R. Nielsen Trustee Date: May 10, 2006 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER his true and lawful attorney and agent in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorney may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind he may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of said attorney and agent hereunder. /s/ Brian C. Scott ---------------------------------------- Brian C. Scott President and Chief Executive Officer Date: January 15, 2003 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ William W. Short, Jr. ---------------------------------------- William W. Short, Jr. Trustee Date: September 1, 2002 TRANSAMERICA IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and BRIAN C. SCOTT, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of Transamerica IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ John W. Waechter ---------------------------------------- John W. Waechter Trustee Date: August 03, 2006 IDEX MUTUAL FUNDS POWER OF ATTORNEY KNOW ALL MEN BY THESE PRESENT, that the undersigned hereby makes, constitutes and appoints JOHN K. CARTER and THOMAS R. MORIARTY, and each of them, severally, his true and lawful attorneys and agents in his name, place and stead and on his behalf (a) to sign and cause to be filed registration statements of IDEX Mutual Funds under the Securities Act of 1933 and the Investment Company Act of 1940, and all amendments, consents and exhibits thereto; (b) to withdraw such statements or any amendments or exhibits and make requests for acceleration in connection therewith; (c) to take all other action of whatever kind or nature in connection with such registration statements which said attorneys may deem advisable; and (d) to make, file, execute, amend and withdraw documents of every kind, and to take other action of whatever kind they may elect, for the purpose of complying with the laws of any state relating to the sale of securities of the Fund, hereby ratifying and confirming all actions of any of said attorneys and agents hereunder. Said attorneys or agents may act jointly or severally, and the action of one shall bind the undersigned as fully as if two or more had acted together. /s/ Jack E. Zimmerman ---------------------------------------- Jack E. Zimmerman Trustee Date: September 3, 2002