TY JOUR TI SOFTWARE FOR CALCULATING THE TAX BURDEN AND DETERMINING THE STRUCTURE OF ADDED VALUE KW simplified taxation system KW tax burden KW spreadsheets KW VBA JO Bulletin of the Angarsk State Technical University AU Kulakova, I.M. AU Bychkova, G.M. PY 2023 IS 1 PB Federal State Funded Educational Establishment of Higher Education «Angarsk State Technical University»