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Up-to-date content, guides, and expert analyses from the global business world.

Global Minimum Tax: When Pillar Two Matters to a Growing Group
Tax Optimization7 min

Global Minimum Tax: When Pillar Two Matters to a Growing Group

The Pillar Two threshold, 15% rule and the practical controls a growing group should establish now.

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Berk Tüzel
August 14, 2026
Cryptocurrency and Tax Residency: Holding, Receiving and Disposing Across Borders
Tax Optimization7 min

Cryptocurrency and Tax Residency: Holding, Receiving and Disposing Across Borders

Holding tokens, receiving them as income and disposing of them can trigger different tax questions. Build the residence and record trail before moving countries.

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Berk Tüzel
August 11, 2026
Dividend Withholding Tax: How to Check the Rate Before You Distribute Profit
Tax Optimization8 min

Dividend Withholding Tax: How to Check the Rate Before You Distribute Profit

Before a cross-border dividend is approved, identify the legal recipient, the source country and the payment date. The rate is not a number to copy from a headline treaty table: it is the result of.

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Berk Tüzel
August 10, 2026
Turkey Branch Office vs Liaison Office: Which Presence Can You Use?
Tax Optimization7 min

Turkey Branch Office vs Liaison Office: Which Presence Can You Use?

Choose the Turkish presence that fits the activity before you lease, hire or take revenue.

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Berk Tüzel
August 10, 2026
Tax Residence Certificate: When Banks, Treaties and Foreign Payers Require It
Tax Optimization8 min

Tax Residence Certificate: When Banks, Treaties and Foreign Payers Require It

Banks, treaty relief claims and foreign payers all ask for proof of tax residence, but they usually mean three different documents. Sending the wrong one delays onboarding or gets relief refused.

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Berk Tüzel
August 9, 2026
Turkey Free Zone vs Mainland Company: Trade and Licence Comparison
Tax Optimization9 min

Turkey Free Zone vs Mainland Company: Trade and Licence Comparison

A decision comparison of a Turkish free zone company against a mainland company: market access, customs and VAT treatment, tax exemptions and licence terms.

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Berk Tüzel
August 9, 2026
Foreign-Sourced Income Exemption in Singapore: What It Does Not Cover
Tax Optimization8 min

Foreign-Sourced Income Exemption in Singapore: What It Does Not Cover

The Singapore FSIE scheme exempts only foreign dividends, branch profits and service income, and only under three strict conditions. Here is what stays taxable.

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Berk Tüzel
August 8, 2026
Estonia e-Residency vs Digital Nomad Visa: Business Access vs Residence Rights
Tax Optimization8 min

Estonia e-Residency vs Digital Nomad Visa: Business Access vs Residence Rights

Estonia e-Residency grants business access with no residence rights; the Digital Nomad Visa grants a stay right with real tax consequences. Here is what each status changes in a remote founder's legal and tax file.

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Berk Tüzel
August 8, 2026
Holding Company vs Operating Company: When to Separate
Tax Optimization8 min

Holding Company vs Operating Company: When to Separate

Compare holding and operating companies through risk, dividends, transaction plans and compliance.

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Berk Tüzel
August 7, 2026
Economic Substance: When an Offshore Company Needs Real Local Activity
Tax Optimization8 min

Economic Substance: When an Offshore Company Needs Real Local Activity

Economic Substance: When an Offshore Company Needs Real Local Activity. Official sources, practical documents, controls and next steps for cross-border fou

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Berk Tüzel
August 6, 2026
Foreign Branch vs Subsidiary: Tax, Liability and Banking Comparison
Tax Optimization7 min

Foreign Branch vs Subsidiary: Tax, Liability and Banking Comparison

Compare branch and subsidiary structures for tax, liability, registrations and banking readiness before entering a new market.

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Berk Tüzel
August 6, 2026
Company Formation vs Employer of Record: Entering a Market With One Employee
Tax Optimization7 min

Company Formation vs Employer of Record: Entering a Market With One Employee

A practical decision memo for a first overseas employee: choose an EOR, form an entity, or pause and test the operating facts first.

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Berk Tüzel
August 5, 2026
Beneficial Ownership Registers: What Founders Must Keep Current
Tax Optimization5 min

Beneficial Ownership Registers: What Founders Must Keep Current

UBO filings are not one-off: share transfers, new investors and control changes all trigger updates. How foreign founders keep registers accurate across countries.

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Berk Tüzel
August 4, 2026
Greece vs Spain Digital Nomad Visa: 2026 Comparison
Tax Optimization5 min

Greece vs Spain Digital Nomad Visa: 2026 Comparison

Income thresholds, permit length, family rules and post-arrival tax treatment compared side by side, so remote workers and founders can choose between Greece and Spain on facts.

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Berk Tüzel
August 4, 2026
Estonia VAT Registration: EUR 40,000 and Voluntary VAT
Tax Optimization7 min

Estonia VAT Registration: EUR 40,000 and Voluntary VAT

When Estonia VAT registration becomes mandatory, when voluntary registration fits, and what to prepare for e-MTA.

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Berk Tüzel
August 2, 2026
VAT Registration for Non-Resident EU Companies: OSS vs Local VAT Number
Tax Optimization7 min

VAT Registration for Non-Resident EU Companies: OSS vs Local VAT Number

A decision framework for foreign companies: taxable-country mapping, local VAT numbers, OSS scope and refund routes.

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Berk Tüzel
August 1, 2026
Permanent Establishment Risk for Remote Teams: Where Profits Can Be Taxed
Tax Optimization7 min

Permanent Establishment Risk for Remote Teams: Where Profits Can Be Taxed

Remote teams can create corporate-tax exposure. Learn how PE risk affects where profits are taxed and what to review before a cross-border role becomes permanent.

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Berk Tüzel
July 31, 2026
CFC Rules for Founders: When an Offshore Company Creates Home-Country Tax
Tax Optimization7 min

CFC Rules for Founders: When an Offshore Company Creates Home-Country Tax

A foreign company can create home-country tax before dividends. See the control, low-tax, income and substance questions founders must map.

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Berk Tüzel
July 30, 2026
Founder Salary vs Dividends: Choosing a Pay Method Across Borders
Tax Optimization7 min

Founder Salary vs Dividends: Choosing a Pay Method Across Borders

Compare founder salary, dividends and loans across borders before residence, payroll and withholding turn a cash withdrawal into a compliance problem.

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Berk Tüzel
July 29, 2026
Turkey Company vs Estonia OÜ: Which Structure Fits a Cross-Border Founder?
Tax Optimization7 min

Turkey Company vs Estonia OÜ: Which Structure Fits a Cross-Border Founder?

Choose between a Turkish company and an Estonian OÜ by operating facts, tax timing, compliance and founder-residence risk.

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Berk Tüzel
July 29, 2026
Cross-Border Dividends: W-8BEN-E and Treaty Reclaims
Tax Optimization7 min

Cross-Border Dividends: W-8BEN-E and Treaty Reclaims

A control-first guide to dividend withholding, W-8BEN-E treaty claims and reclaims.

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Berk Tüzel
July 28, 2026
EU VAT OSS vs Local Registration: Which Ecommerce Sellers Need Which?
Tax Optimization8 min

EU VAT OSS vs Local Registration: Which Ecommerce Sellers Need Which?

Choose between OSS reporting and local VAT registration by mapping stock, customer country and taxable activity.

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Berk Tüzel
July 26, 2026
Business Bank Account for a Non-Resident Company: KYC File Checklist
Tax Optimization7 min

Business Bank Account for a Non-Resident Company: KYC File Checklist

A practical KYC file checklist for non-resident companies: ownership evidence, payment profile, provider choice and common reasons a business account application fails.

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Berk Tüzel
July 24, 2026

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