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

Spain vs Portugal Digital Nomad Visa: Income, Tax and Family Comparison
Tax Optimization7 min

Spain vs Portugal Digital Nomad Visa: Income, Tax and Family Comparison

Compare income evidence, family rules and tax-residency questions before choosing Spain or Portugal for remote work.

Berk Tüzel
Berk Tüzel
July 23, 2026
Estonia vs Delaware LLC: Formation Cost, Banking and Reporting Comparison
Tax Optimization7 min

Estonia vs Delaware LLC: Formation Cost, Banking and Reporting Comparison

Compare an Estonian OÜ and a Delaware LLC on formation, banking, tax timing and reporting before choosing a founder structure.

Berk Tüzel
Berk Tüzel
July 22, 2026
Singapore Company Tax for Foreign Founders: 2026 Rates and Filing Calendar
Tax Optimization6 min

Singapore Company Tax for Foreign Founders: 2026 Rates and Filing Calendar

A practical 2026 Singapore corporate-tax calendar for foreign founders: the 17% rate, tax exemptions, ECI timing, annual return timing and the 30 November tax-return deadline.

Berk Tüzel
Berk Tüzel
July 21, 2026
Netherlands Holding Company: Dividend Tax, Substance and Founder Decisions
Tax Optimization7 min

Netherlands Holding Company: Dividend Tax, Substance and Founder Decisions

A founder decision framework for Dutch holding-company dividend administration, operating substance and banking readiness.

Berk Tüzel
Berk Tüzel
July 20, 2026
Estonia vs Netherlands Holding Company: Dividend Flow and Substance
Tax Optimization8 min

Estonia vs Netherlands Holding Company: Dividend Flow and Substance

A practical comparison of dividend timing, governance and substance before choosing an Estonia or Dutch holding company.

Berk Tüzel
Berk Tüzel
July 20, 2026
Turkey Corporate Tax for Foreign-Owned Companies: 2026 Overview
Tax Optimization6 min

Turkey Corporate Tax for Foreign-Owned Companies: 2026 Overview

A 2026 overview of Turkey corporate tax for foreign-owned companies: the 25% general rate, category exceptions, filing timing and implementation checks.

Berk Tüzel
Berk Tüzel
July 19, 2026
Tax Residency for Remote Founders: Personal Residence vs Company Management
Tax Optimization8 min

Tax Residency for Remote Founders: Personal Residence vs Company Management

Remote founders need two tax analyses: where they personally live for tax, and where the company is actually managed. This 2026 guide separates the files.

Berk Tüzel
Berk Tüzel
July 18, 2026
Turkey CBI for U.S. citizens: tax and reporting considerations
Tax Optimization8 min

Turkey CBI for U.S. citizens: tax and reporting considerations

Turkey CBI for U.S. citizens in 2026: official route facts, IRS filing, FBAR, FATCA, and expatriation questions to review.

Berk Tüzel
Berk Tüzel
July 16, 2026
Profit distribution and dividend rules for Turkish companies
Tax Optimization6 min

Profit distribution and dividend rules for Turkish companies

A practical 2026 guide to distributable profit, shareholder resolutions, reserves and dividend withholding for Turkish companies.

Berk Tüzel
Berk Tüzel
July 14, 2026
Common International Tax Mistakes Founders Make
Tax Optimization5 min

Common International Tax Mistakes Founders Make

Five international tax mistakes that create avoidable filing, VAT and cash-flow problems for founders operating across borders.

Berk Tüzel
Berk Tüzel
July 14, 2026
Tax Planning for Selling Your Business
Tax Optimization6 min

Tax Planning for Selling Your Business

A practical 2026 checklist for sale structure, records, earn-outs and cross-border tax risks before you sign.

Berk Tüzel
Berk Tüzel
July 13, 2026
Tax Implications of European Residency Permits
Tax Optimization7 min

Tax Implications of European Residency Permits

A European residence permit affects your right to stay. Tax residence follows the facts, the country’s domestic rules and, sometimes, treaty paperwork.

Berk Tüzel
Berk Tüzel
July 13, 2026
Estonian OÜ and Permanent Establishment Risk
Tax Optimization5 min

Estonian OÜ and Permanent Establishment Risk

An Estonian OÜ can be managed remotely. The place where decisions and work happen can still create tax exposure abroad.

Berk Tüzel
Berk Tüzel
July 13, 2026
UK VAT Registration for Non-Resident Companies
Tax Optimization5 min

UK VAT Registration for Non-Resident Companies

A 2026 guide to UK VAT registration for non-resident companies: when the no-threshold rule applies, what to file and what to monitor.

Berk Tüzel
Berk Tüzel
July 13, 2026
R&D Tax Incentives in Europe: A 2026 Comparison
Tax Optimization6 min

R&D Tax Incentives in Europe: A 2026 Comparison

A founder-focused comparison of R&D tax incentive mechanics in France, the Netherlands, the UK and Germany, with a practical claim-readiness checklist.

Berk Tüzel
Berk Tüzel
July 13, 2026
Setting Up a Tax-Efficient Group Structure
Tax Optimization7 min

Setting Up a Tax-Efficient Group Structure

A practical 2026 framework for deciding when a parent, operating subsidiaries and documented intercompany arrangements make sense.

Berk Tüzel
Berk Tüzel
July 12, 2026
Turkey VAT (KDV) Registration and Rates 2026
Tax Optimization7 min

Turkey VAT (KDV) Registration and Rates 2026

How Turkish companies should set up KDV registration, classify rates and control invoices in 2026.

Berk Tüzel
Berk Tüzel
July 12, 2026
Tax Pitfalls of Working Across Multiple Countries
Tax Optimization7 min

Tax Pitfalls of Working Across Multiple Countries

Working in several countries can create residence, payroll and reporting exposure before anyone notices. Start with where work is actually performed.

Berk Tüzel
Berk Tüzel
July 11, 2026
How to Structure a SaaS Business Tax-Efficiently
Tax Optimization8 min

How to Structure a SaaS Business Tax-Efficiently

A tax-efficient SaaS structure starts with where profit stays, where customers sit, and where founders are taxed. Rate shopping alone usually backfires.

Berk Tüzel
Berk Tüzel
July 11, 2026
Dividend vs Salary: Tax Optimization for Owners in 2026
Tax Optimization7 min

Dividend vs Salary: Tax Optimization for Owners in 2026

A practical 2026 guide to choosing salary, dividends, and owner withdrawals without creating a tax or documentation problem.

Berk Tüzel
Berk Tüzel
July 10, 2026
Stamp Duty and Transaction Taxes in Turkish M&A
Tax Optimization7 min

Stamp Duty and Transaction Taxes in Turkish M&A

A practical 2026 guide to SPA stamp duty, title deed fees, VAT risk, and tax-neutral devir or split routes when buying a Turkish target.

Berk Tüzel
Berk Tüzel
July 10, 2026
Paying Yourself from an Estonian OÜ: Salary vs Dividends
Tax Optimization7 min

Paying Yourself from an Estonian OÜ: Salary vs Dividends

An Estonian OÜ can pay a founder through payroll, dividends, or both. The right mix depends on active work, employer cost, distributable profit, and where the founder is tax resident.

Berk Tüzel
Berk Tüzel
July 9, 2026
Annual Tax Filing Obligations in Estonia in 2026
Tax Optimization7 min

Annual Tax Filing Obligations in Estonia in 2026

Estonia does not run on one single year-end tax form. The annual report, TSD, VAT returns, and the founder's personal return all sit on different clocks.

Berk Tüzel
Berk Tüzel
July 9, 2026
Cross-Border E-commerce Taxes: A Seller's Guide
Tax Optimization7 min

Cross-Border E-commerce Taxes: A Seller's Guide

A practical 2026 guide to EU VAT, UK checkout VAT, marketplace rules, and state-level U.S. tax review for cross-border online sellers.

Berk Tüzel
Berk Tüzel
July 9, 2026

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