Potential Income from an IRA Estimate your monthly and annual income from various IRA types. You are viewing this website at a small screen resolution which doesn't support calculators. Click here to view this calculator. Share | Related Content 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? What Is an Annuity? Annuities are versatile tools that can help you save for retirement and generate income in retirement. Roth 401(k) vs. Traditional 401(k) This calculator compares employee contributions to a Roth 401(k) and a traditional 401(k).