Convergence data for energy components were discussed above (see Fig. ). With the exception of dispersion, all energy components exhibit similar convergence behavior and have nearly reached the CBS limit using def2-ma-TZVP. The dispersion energy E MBD disp converges even faster because MBD depends on the density but not directly on the wavefunction. This should be contrasted with the slow convergence of SAPT0 (Fig. ), to an undesirable answer. Relatively uniform convergence of the energy components means that the XSAPT EDA does not benefit significantly from error cancellation, provided that basis sets of triple-ζ quality are used.