• June 1, 2026

  In e-Notification the Clock Runs Against You: the Council of State Already Started Counting Day 5

  An e-notification is deemed served at the end of the 5th day after it reaches your address; the Council of State says it is valid even if no SMS/e-mail alert arrives. The Constitutional Court's 2026 annulment shakes this ground, but it takes effect on 3 January 2027. The taxpayer's only defence is a disciplined checking routine.

  8 min →
• June 1, 2026

  How One Missed e-Notification During a Leave Period Wiped Out a 30-Day Right to Appeal

  From a file we recently took over: during a staff leave period, a single notice slipped through a control gap and — under the 5-day rule — closed the right to appeal. The fix: 24/7 mobile monitoring plus a dual-verification protocol.

  4 min →
• May 28, 2026

  Turkey Technopark 2026: 100% Corporate Tax Exemption and Hidden Compliance Costs

  Law No. 4691 Provisional Article 2 grants 100% corporate income tax exemption on software, design and R&D earnings in Turkish Technology Development Zones until 31 December 2028. For foreign investors the headline is attractive, but the operational picture is complex: branch requirement (liaison office structurally excluded under Law 4875), 3% venture capital fund obligation triggered at TL 5,000,000 exempt earnings for FY 2026 (Presidential Decree 10803, Official Gazette 31.12.2025), CPA (YMM) full-attestation report mandatory above TL 500,000 single item or TL 1,000,000 aggregate (Tebliğ 49, OG 30.12.2025), and the 40× minimum wage cap on payroll incentives at TL 1,321,200/month/employee for 2026 (Law 7555, OG 24.07.2025). Compared with Ireland Knowledge Development Box (10% effective, Section 40 Finance Act 2022, commencement order signed 5 Sept 2023, operative 1 Oct 2023) and UK Merged RDEC (20% headline, 15% net), Turkey wins for groups under €750M consolidated revenue; above that, OECD Pillar Two QDMTT (Law 7524) tops the rate up to 15% because the Turkish exemption is not a qualifying refundable tax credit.

  11 min →
• May 25, 2026

  Turkey Liaison Office 2026: Setup, Zero-Tax Advantage and the Conversion Trap

  A Turkish liaison office offers zero tax and low cost — but Law No. 4875 will not let you convert it directly into a JSC or QSC. Most of the 200+ active offices are unaware of this structural limit.

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• May 24, 2026

  Istanbul Financial Centre 2026 Reforms: Five Concrete Advantages, Three Risks and the 2047 Horizon

  Türkiye's Law No. 7582, adopted by the Turkish Parliament on 21 May 2026, rewrites the IFC ecosystem on two layers: extending the 100% corporate tax exemption to 2047, and introducing the Qualified Service Centre (QSC) status. Effective 0% corporate tax on foreign-source income, personnel salary exemption up to six times the minimum wage, full transit-trade relief in IFC and Industry Zones. But Pillar Two QDMTT, substance and transfer pricing decide who actually keeps the benefit.

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Earlier insights are grouped by cluster above.