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The comprehensive guide to the world's leading tax firms

Sigma provides clients with tax consulting services but has particular strength in tax controversy services. The firm also provides clients with real estate and indirect tax advice. Both Turkish and international companies rely on the firm for tax ad... [more]

Sigma provides clients with tax consulting services but has particular strength in tax controversy services. The firm also provides clients with real estate and indirect tax advice. Both Turkish and international companies rely on the firm for tax advice.