TY JOUR TI METHODS FOR OPTIMIZING SMALL BUSINESS FINANCIAL EXPENSES WITH INCREASING VAT TAX BURDEN KW small business KW VAT KW taxes KW entrepreneurship KW tax base KW accounting JO Auditor AU Volkova, A.A. AU Shaposhnikova, I.V. AU Yazykova, S.V. PY 2026 IS 12 PB INFRA-M Academic Publishing LLC.