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We present a consistent renormalization scheme for the CP-conserving Two-Higgs-Doublet Model based on MS renormalization of the mixing angles and the soft-Z_2-symmetry-breaking scale M_sb in the Higgs sector. This scheme requires to treat tadpoles fully consistently in all steps of the calculation in order to provide gauge-independent S-matrix elements. We show how bare physical parameters have to be defined and verify the gauge independence of physical quantities by explicit calculations in adoi:10.1007/jhep09(2016)115 fatcat:qlydr3xrrrgjxcfvytenvxi3l4