Jonrisman Sinaga and Machfud Sidik 2019. Analysis of Increase in Non-Taxable Income (NTI) in relation with Implementation of Equality Principles and Taxation Base Principles. Ilomata International Journal of Tax and Accounting. 1, 1 (Oct. 2019), 12-17. DOI:https://doi.org/10.52728/ijtc.v1i1.39.