This paper presents a new reinforced concrete beam finite element that explicitly accounts for the slip between the reinforcing bars and the surrounding concrete. The element formulation combines the fiber- section model with the finite-element model of a reinforcing bar with continuous slip. The section model retains the plane-section assumption, but the steel fiber strains are computed as the sum of two contributions, the rebar deformation and the anchorage slip. The model applies to any cross-sectional shape under biaxial bending and both monotonic and cyclic loads. The model theoretical framework is presented first. A sensitivity study on the monotonic and cyclic response of a reinforcing bar shows how the model traces the bar's reduced initial stiffness, bond degradation, and anchorage loss for insufficient anchorage length. Finally, comparison with an experimental test on a circular column shows that the prediction with the new model is in good agreement with the test, whereas the original fiber model with perfect bond overestimates the hysteretic energy dissipated during the loading cycles. element to the analysis of RC structures, the introduction of the mechanics of bond-slip of the reinforcing bars appears to be a necessary enhancement toward a realistic description of the cyclic and ultimate behavior of RC structures. Rubiano- Benavides (1998) proposed the use of rotational springs at the element ends to account for the added flexibility due to bond- slip. This approach is more suitable for lumped plasticity mod- els and requires particular care in the selection of the rotational spring's mechanical properties. The framework of the pro- posed model is that of the fiber model, where the rebar re- sponse is modified to account for the effects of bond-slip. The basic idea is to merge the formulation of the reinforcing bar with bond-slip proposed by Monti et al. (1997a,b) into the force-based fiber element proposed by Spacone et al. (1996a). The framework of the fiber-section state determination is re- tained, and a new approach is proposed to compute the rebar stress and stiffness that includes the effects of slip. In the new model, the steel fiber accounts not only for the response of the rebar inside the beam, but also for its anchor- age outside the element, in either a structural joint or a footing. The steel fiber strain is given by the sum of the effects of the rebar deformation and the anchorage slip. The response is still computed in terms of fiber stress and stiffness, which are needed for the fiber-section state determination. An attractive feature of this formulation is the possibility of tracing the response of each bar within a section, which is particularly important when each rebar undergoes a different load history. Therefore, the model is suitable for sections of general shape, including circular ones, and for sections under biaxial loading. The theoretical framework of the new model is presented first, followed by a series of parametric studies on the perfor- mance of the new model. Finally, the results from an experi- mental test are compared with the prediction obtained with the proposed model.