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

How Remote Founders Choose a Tax Residency
Tax Optimization8 min

How Remote Founders Choose a Tax Residency

A practical 2026 guide to tax residency for remote founders: domestic tests, treaty tie-breakers, residency certificates, and the proof file authorities expect.

Berk Tüzel
Berk Tüzel
June 27, 2026
How Estonia's 0% Corporate Tax Affects M&A Structuring
Tax Optimization8 min

How Estonia's 0% Corporate Tax Affects M&A Structuring

Estonia taxes profit on distribution, not on earning. In M&A, that changes how buyers price retained earnings, post-closing dividends, and management-location risk.

Berk Tüzel
Berk Tüzel
June 26, 2026
VAT and GST for Digital Services Sold Internationally
Tax Optimization6 min

VAT and GST for Digital Services Sold Internationally

A practical 2026 guide to VAT and GST on SaaS and digital sales: customer location, EU OSS, UK VAT exposure, and New Zealand thresholds.

Berk Tüzel
Berk Tüzel
June 26, 2026
Tax Considerations in Estonian M&A Transactions
Tax Optimization8 min

Tax Considerations in Estonian M&A Transactions

In Estonian M&A, tax value often sits in retained earnings, dividend timing, and management location. Buyers who price only EBITDA can miss the real cash-out cost.

Berk Tüzel
Berk Tüzel
June 25, 2026
Double tax treaties 2026: how to use them correctly
Tax Optimization6 min

Double tax treaties 2026: how to use them correctly

A practical guide to treaty residence, withholding forms, and the mistakes that block reduced tax rates.

Berk Tüzel
Berk Tüzel
June 24, 2026
Estonia Tax Residency vs Company Tax Residency in 2026
Tax Optimization7 min

Estonia Tax Residency vs Company Tax Residency in 2026

Personal tax residency and company tax residency in Estonia are different files. Mixing them creates avoidable mistakes around e-Residency, worldwide income, and foreign PE risk.

Berk Tüzel
Berk Tüzel
June 24, 2026
Tax Residency Explained: Avoid Double Tax in 2026
Tax Optimization7 min

Tax Residency Explained: Avoid Double Tax in 2026

Learn how tax residency, treaties, foreign tax credits, and residency certificates work together to reduce double tax risk in 2026.

Berk Tüzel
Berk Tüzel
June 24, 2026
Withholding Tax on Cross-Border Dividends
Tax Optimization8 min

Withholding Tax on Cross-Border Dividends

Cross-border dividends are often over-withheld because the file is incomplete on payment date. In 2026, the real work is checking domestic rate, treaty rate, beneficial-owner proof and relief timing.

Berk Tüzel
Berk Tüzel
June 23, 2026
Personal Income Tax in Estonia for Residents in 2026
Tax Optimization6 min

Personal Income Tax in Estonia for Residents in 2026

Estonian residents declare worldwide income. For the 2026 filing cycle, the key markers are the 22% rate, the 16 February to 30 April filing window, and income-based basic exemption rules.

Berk Tüzel
Berk Tüzel
June 23, 2026
Holding Company Jurisdictions Compared in 2026
Tax Optimization7 min

Holding Company Jurisdictions Compared in 2026

Estonia, the Netherlands, and Singapore solve different holding-company problems. The right choice depends on dividend flow, tax residence, substance, and banking.

Berk Tüzel
Berk Tüzel
June 22, 2026
Tax Due Diligence When Buying a Turkish Company
Tax Optimization6 min

Tax Due Diligence When Buying a Turkish Company

A practical 2026 guide to tax due diligence in Turkish acquisitions, from corporation tax and VAT checks to deal-structure and filing risk.

Berk Tüzel
Berk Tüzel
June 22, 2026
Estonia's 0% Corporate Tax on Retained Earnings
Tax Optimization7 min

Estonia's 0% Corporate Tax on Retained Earnings

Estonia's tax edge is real, but it is a deferral model. Retained profit sits untaxed until distribution, while salary, fringe benefits, and foreign PE risk change the file fast.

Berk Tüzel
Berk Tüzel
June 22, 2026
Controlled Foreign Company Rules in 2026
Tax Optimization7 min

Controlled Foreign Company Rules in 2026

CFC rules can tax foreign-company profits at home sooner than founders expect. The usual pressure points are control, low taxation, mobile income and weak substance.

Berk Tüzel
Berk Tüzel
June 21, 2026
How to Become an Estonian Tax Resident in 2026
Tax Optimization6 min

How to Become an Estonian Tax Resident in 2026

Estonian tax residency starts with place of residence or the 183-day test. The real work is aligning the move, income file, and treaty position before the tax office has to ask.

Berk Tüzel
Berk Tüzel
June 20, 2026
Permanent Establishment Risk Explained in 2026
Tax Optimization8 min

Permanent Establishment Risk Explained in 2026

Permanent establishment risk starts earlier than most founders expect. A desk, a sales closer, or a local team can move tax exposure into a new country fast.

Berk Tüzel
Berk Tüzel
June 20, 2026
Transfer Pricing Basics for Small International Businesses
Tax Optimization7 min

Transfer Pricing Basics for Small International Businesses

If your group invoices services, software, loans or inventory across borders, transfer pricing starts earlier than most small teams expect.

Berk Tüzel
Berk Tüzel
June 19, 2026
How to Legally Reduce Your Corporate Tax Bill in 2026
Tax Optimization7 min

How to Legally Reduce Your Corporate Tax Bill in 2026

A practical 2026 guide to lowering corporate tax legally through deductions, entity design, treaty relief, and disciplined documentation.

Berk Tüzel
Berk Tüzel
June 18, 2026
Living and Being Taxed in Estonia 2026
Tax Optimization7 min

Living and Being Taxed in Estonia 2026

A practical 2026 guide to moving to Estonia, becoming tax resident, and keeping salary, business, and immigration files aligned from day one.

Berk Tüzel
Berk Tüzel
June 17, 2026
International Tax Optimization for Founders 2026
Tax Optimization7 min

International Tax Optimization for Founders 2026

A practical guide to the pieces that actually move money: residency, management, transfer pricing, VAT, and the paper trail behind them.

Berk Tüzel
Berk Tüzel
June 17, 2026
How Digital Nomads Are Taxed in 2026: A Country-by-Country Guide
Tax Optimization9 min

How Digital Nomads Are Taxed in 2026: A Country-by-Country Guide

Portugal, Spain, Estonia, UAE, Thailand and more — a practical breakdown of how 9 countries tax remote workers in 2026 and how to avoid double taxation.

Berk Tüzel
Berk Tüzel
June 15, 2026
How Digital Nomads Are Taxed in 2026: A Country-by-Country Overview
Tax Optimization12 min

How Digital Nomads Are Taxed in 2026: A Country-by-Country Overview

A practical guide to tax residency, the best countries for digital nomad taxation in 2026, and how to avoid paying tax twice while working remotely across borders.

Berk Tüzel
Berk Tüzel
June 15, 2026
Turkey Tax Guide 2026 for Foreign Founders
Tax Optimization8 min

Turkey Tax Guide 2026 for Foreign Founders

A practical 2026 guide to Turkish corporate tax, VAT, withholding and filing dates for foreign-owned companies.

Berk Tüzel
Berk Tüzel
June 5, 2026
Tax Optimization for Entrepreneurs in Europe
Tax Optimization7 dk

Tax Optimization for Entrepreneurs in Europe

Tax optimization guide for entrepreneurs in Europe: advantages, strategies and compliance tips.

Berk Tüzel
Berk Tüzel
May 5, 2026
How to Obtain a Tax Residency Certificate
Tax Optimization6 dk

How to Obtain a Tax Residency Certificate

How to obtain a tax residency certificate? Required documents, application steps, and practical tips.

Berk Tüzel
Berk Tüzel
May 3, 2026

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