  Within the framework of the Covariant formulation of Light-Front Dynamics, we
develop a general non-perturbative renormalization scheme based on the Fock
decomposition of the state vector and its truncation. The explicit dependence
of our formalism on the orientation of the light front is essential in order to
analyze the structure of the counterterms and bare parameters needed to
renormalize the theory. We present here a general strategy to determine the
dependence of these quantities on the Fock sectors. We apply our formalism to
QED for the two-body (one fermion and one boson) truncation and recover
analytically, without any perturbative expansion, the renormalization of the
electric charge according to the requirements of the Ward Identity.
