Solomon Islands vs Tonga
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
🇸🇧 Solomon Islands — Solomon Islands Tax System
The Solomon Islands levies income tax at progressive rates up to 40%. GST (Goods and Services Tax) replaced import duties for many items. Tax administration is handled by the Inland Revenue Division. Logging, fishing, and subsistence agriculture dominate the economy. Political instability and dependence on aid are ongoing challenges.
🇹🇴 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.
Solomon Islands vs Tonga: Key Tax Differences (2026)
💰 Income Tax: 🇸🇧 Solomon Islands has a higher top income tax rate (0–40% vs 0–20%). 🇹🇴 Tonga is more favourable for high earners.
🛒 VAT/Sales Tax: Tonga has a higher consumption tax (10% vs 15%).
🏢 Corporate Tax: 🇹🇴 Tonga offers a lower corporate rate (25% vs 30%), which can influence business location decisions.