Annuity Comparison This calculator compares a hypothetical fixed annuity with an account where the interest is taxed each year. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Have A Question About This Topic? Name Email Address Message Thank you! Oops! Related Content When Markets React When markets shift, experienced investors stick to their strategy. 18 Years’ Worth of Days The average retirement lasts for 18 years, with many lasting even longer. Will you fill your post-retirement days with purpose? Is a SEP-IRA Right for Your Business? For some, the idea of establishing a retirement strategy evokes worries about complicated reporting and administration.