This paper is an exercise in focus to propose a comparison methodology between quotation-profit in the annuity regimes: individual save and half premium with defined contribution, according to the Law 100 of 1993, the transition regime and the reform of Law 797 of 2003, observing the parameters evolution defined in the law: minimal requirements to have an annuity (time and age), quotation percentage, rate of return, rate of replacement. This paper concludes that ten years from the Law 100, they are proposed a new annuity and a constitutional reform that, under the market paradigms, the raising of price of social benefits, much more mandatory permanence time in the system, the increase of quotations, the reduction of profits and the suppression of transition regime by 2007, can reduce imbalances making economically no-viable the annuities dual model with social benefits subsidy. However, intending to level the price of benefits in the two regimes does not stimulate the public system, and generate additional costs for the State. So it is necessary to evaluate the effect of this modality on members under parameters of welfare theory. We can predict that futures reforms, being urgent, will raise much more the price of benefits and reduce the profits. So, it is necessary to evaluate if Colombia needs a mixed system allowing the cohabitation of basic solidarity components with the market structures without leaving the long-term effects aside.