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Tax Consultant
TAX 360 Steuerberatungsgesellschaft m.b.H. ↗Mag. Mario Haider BA pursued studies in political science and international tax law in Vienna. In 2017, he became a certified Austrian tax consultant. Throughout his career at prominent tax advisory firms, he developed a strong specialization in international tax law.
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Corporate Tax Advisory ↗ International Taxation ↗
GST/VAT Compliance & Advisory ↗ Cross-Border Indirect Tax Planning ↗
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Tax and structuring decisions for businesses, investments and transactions that operate across more than one jurisdiction.
Compliance and financial-integrity support across sanctions, anti-bribery, AML, third-party risk and related controls.
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OPEN INDUSTRY SYSTEM → INDUSTRY SYSTEMEnergy and infrastructure projects bring together regulation, capital, contracts, land, construction, supply chains and long-term operating risk.
OPEN INDUSTRY SYSTEM → INDUSTRY SYSTEMPrivate capital and family businesses often need cross-border structures that work commercially while protecting ownership, governance and long-term value.
OPEN INDUSTRY SYSTEM → INDUSTRY SYSTEMProfessional and business-services firms expanding internationally must align entity structure, people, client contracts, tax and local professional obligations.
OPEN INDUSTRY SYSTEM →These fields are part of every canonical profile record and connect this professional across the WONE global network.
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Prototype WONE Intelligence on digital regulation in Australia, connected to Legal & Contracting and the decisions international businesses may need to make.
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Prototype WONE Intelligence on supply chains in Japan, connected to Employment, Payroll & Mobility and the decisions international businesses may need to make.
OPEN →Vienna based professional practice delivering multi-disciplinary advisory across corporate, commercial and cross-border mandates.
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