When you start earning, your first and foremost priority is to have your desired lifestyle, but also to save enough for you and your family to live the rest of your lives comfortably. Annuity is an investment plan which targets this specific goal of yours. Annuities allow you to make a lump-sum investment and get regular earnings for life. In this plan, the insurance company will take the amount invested by you, and generate regular earnings by the returns generated from it, at regular intervals. Some of the best annuity plans are often compared to pensions considering the nature of investment and returns.