With regard to the accuracy and e ciency of basis sets, our study suggests that using smaller, even non-augmented basis sets to save time and resources is appropriate for large po-larizability calculations. The substantial linear correlations seen between methods of varying size and levels of augmentation suggests that using a basis set such as cc-pVTZ with a linear scaling factor is appropriate for large polarizability molecules. By calculating polarizability in this manner for molecules with polarizabilities over 200 Å3 , we believe accuracies near the level of those achieved with an aug-cc-pVTZ basis set are attainable at nearly a six-fold speed-up and without the convergence issues we faced when attempting to use this basis set to calculate polarizabilities in this range. Using a basis set with a linear correction factor opens up the possibility of calculating highly accurate polarizabilities for increasingly large molecules using conventional DFT methods. Additional work will need to be done to test the limits of the polarizability magnitudes that can be accurately calculated in this manner.