Organic electrochemical transistors (OECTs) have received a great deal of attention, especially in biomedical applications, since their emergence in the mid-1980s. Despite many efforts on modeling these transistors, simulating OECT-based circuits is still a challenge due to a lack of precise mathematical models. In this paper, some of the main features of OECTs are analyzed and a DC model is proposed that more closely mimics the transistors’ characteristics compared to the widely-accepted Bernards-Malliaras (B-M) model. While OECTs are mostly considered as transconductance amplifiers, the potential of using these transistors as voltage amplifiers is investigated here by performing multiple measurements at various drain-source voltages. Compared to B-M, the proposed model shows a 1–3.6% improvement in matching the behavior of the analyzed transistors. Simulations in Cadence environment also confirm the accuracy of the model with respect to the actual measurements.