Augmented basis sets are regarded as ideal for accurate polarizability calculations, 14 however running calculations with a large basis set for the larger species in the "wide range" set presented convergence issues. Both the large amount of computation time needed and the possibility of linear dependence concerns led us to choose a non-augmented triple-zeta set for our comparative DFT calculations above. Because we were interested in both the magnitude of the increase in accuracy provided by di↵use basis functions and the correlation between polarizabilities calculated with di↵erent basis sets, we ran the "wide range" set subset of low to medium polarizability species with four di↵erent basis sets for comparison. The sets we used were cc-pVDZ, cc-pVTZ, jun-cc-pVTZ, and aug-cc-pVTZ, the latter two providing increasing amounts of di↵use functions. Pairwise comparison of increasingly accurate basis sets (Figure ) reveals incredibly linear correlations, with simple linear regression analysis showing slopes close to one and an R 2 value of 1.00 for all three comparisons. In summary, while di↵erences in computed polarizabilities exist using larger and augmented basis sets, across a wide range of molecular polarizabilities, such e↵ects appear small.