Tonga vs Sao Tome and Principe
Tax Rate Comparison
Enter your income below for a personal tax estimate, then scroll down for full rate breakdowns.
💰 Personal Income Tax Calculator
Enter your income to see your estimated annual tax liability in each country — side by side.
Individual Income Tax (Top Marginal Rate)
VAT / GST / Sales Tax
Corporate Tax Rate
Capital Gains Tax
Social Security & Payroll
🇹🇴 Tonga — Tonga Tax System
Tonga levies income tax at a flat 20% on income above the personal allowance. No capital gains tax. Consumption tax at 15% replaced the previous sales tax. The economy is heavily reliant on remittances (over 40% of GDP) from Tongans abroad, mainly in Australia, New Zealand and the US. Agriculture and fishing are the main domestic sectors.
🇸🇹 Sao Tome and Principe — Sao Tome & Principe Tax System
Sao Tome and Principe is a small island nation in the Gulf of Guinea with progressive income tax up to 25%. IVA (VAT) is 15%. The economy has long been dominated by cocoa exports and foreign aid. Offshore oil potential (Joint Development Zone with Nigeria) has not yet materialized in significant production. The country joined the EITI (Extractive Industries Transparency Initiative).
Tonga vs Sao Tome and Principe: Key Tax Differences (2026)
💰 Income Tax: 🇸🇹 Sao Tome and Principe has a higher top income tax rate (0–20% vs 0–25%). 🇹🇴 Tonga is more favourable for high earners.
🛒 VAT/Sales Tax: Both countries have comparable consumption tax rates (15% vs 15%).
🏢 Corporate Tax: Corporate rates are similar in both countries (25% vs 25%).
📈 Capital Gains: 🇹🇴 Tonga taxes investment gains at a lower rate (0% vs 25%), benefiting investors.