Sri Lanka vs Tonga: Income Tax Compared (2026)
Sri Lanka vs Tonga: tax rates, brackets, and take-home pay compared side by side.
| Metric |  Sri Lanka |  Tonga |
|---|---|---|
| Currency | LKR | TOP |
| Top marginal rate | 36% | 25% |
| Standard deduction | ₨4,160,000 | T$32,500 |
| Filing deadline | 31 July | 31 October |
Estimated at $75,000 USD-equivalent income
Sri Lanka net income ≈ ₨19,598,180 (12.9% effective rate)
Tonga net income ≈ T$160,434 (9.0% effective rate)
Sri Lanka Pros & Cons
- ✓₨4,160,000 standard deduction before tax applies
- ✓Clear filing deadline: 31 July
- ✕Top earners face a marginal rate of up to 36%
- ✕Higher top rate than Tonga by 11.0 points
- ✕Progressive brackets mean higher earners pay a larger share
Tonga Pros & Cons
- ✓Lower top tax rate than Sri Lanka (25% vs 36%)
- ✓T$32,500 standard deduction before tax applies
- ✓Clear filing deadline: 31 October
- ✕Top earners face a marginal rate of up to 25%
- ✕Progressive brackets mean higher earners pay a larger share
Frequently asked questions
At $75,000 income, how does take-home pay compare?+
On an estimated $75,000 USD-equivalent income, our calculator shows Sri Lanka take-home of roughly ₨19,598,180 (12.9% effective rate) versus Tonga's T$160,434 (9.0% effective rate). Use the calculator above with your own income for a personalized estimate.
Which has the higher top tax rate, Sri Lanka or Tonga?+
Sri Lanka has the higher top marginal rate at 36%, compared to Tonga's 25%.
What's the standard deduction in each country?+
Sri Lanka's estimated standard deduction is ₨4,160,000, while Tonga's is T$32,500. A larger deduction reduces the income that's actually taxed.
Are these figures exact?+
No — these are estimates generated from a simplified model of each country's published tax brackets, intended for planning purposes. They don't account for every credit, allowance, or surcharge. Always confirm current-year figures with Sri Lanka's and Tonga's official tax authorities before making a decision.
Compare Sri Lanka with other countries
Compare Tonga with other countries
Figures shown are estimates for the current tax year and do not include every deduction, credit or surcharge that may apply. Always confirm with each country's official tax authority.