EXHIBIT 21 SUBSIDIARIES OF GREAT-WEST LIFE & ANNUITY INSURANCE COMPANY JURISDICTION OF INCORPORATION OR ORGANIZATION SUBSIDIARY Advised Assets Group, LLC Colorado Alta Health & Life Insurance Company Indiana BenefitsCorp, Inc. (1) Delaware BenefitsCorp, Inc. of Wyoming Wyoming GWFS Equities, Inc. Delaware Canada Life Insurance Company of America Michigan Canada Life of America Financial Services, Inc. Georgia Canada Life Insurance Company of New York New York Financial Administrative Services Corporation (2) Colorado Emjay Corporation Wisconsin EMJAY Retirement Plan Services, Inc. Wisconsin First Great-West Life & Annuity Insurance Company New York Great-West Benefit Services, Inc. Delaware Greenwood Investments, LLC Colorado GW Capital Management, LLC (3) Colorado GWL Properties, Inc. Colorado Maxim Series Fund, Inc. Maryland National Plan Coordinators of Delaware, Inc. Delaware NPC Administrative Services Corporation California NPC Securities, Inc. California Great-West Healthcare Holdings, Inc. Colorado Great-West Healthcare, Inc. Vermont Great-West Healthcare of Arizona, Inc. Arizona Great-West Healthcare of California, Inc. California Great-West Healthcare of Colorado, Inc. Colorado Great-West Healthcare of Florida, Inc. Florida Great-West Healthcare of Georgia, Inc. Georgia Great-West Healthcare of Illinois, Inc. Illinois Great-West Healthcare of Indiana, Inc. Indiana Great-West Healthcare of Kansas/Missouri, Inc. Kansas Great-West Healthcare of Massachusetts, Inc. Massachusetts Great-West Healthcare of New Jersey, Inc. New Jersey Great-West Healthcare of North Carolina, Inc. North Carolina Great-West Healthcare of Ohio, Inc. Ohio Great-West Healthcare of Oregon, Inc. Oregon Great-West Healthcare of Pennsylvania, Inc. Pennsylvania Great-West Healthcare of Tennessee, Inc. Tennessee Great-West Healthcare of Texas, Inc. Texas Great-West Healthcare of Washington, Inc. Washington One Orchard Equities, Inc. Colorado Orchard Capital Management, LLC Colorado Orchard Trust Company Colorado P.C. Enrollment Services & Insurance Brokerage, Inc. Massachusetts Westkin Properties Ltd. California (1) Also doing business as Benefits Insurance Services, Inc. (2) Also doing business as Financial Administrative Services Corporation of Colorado. (3) Also doing business as Maxim Capital Management, LLC.