Colombo · Markets · MoneyUnderstanding tax on shares, dividends and other investments in Sri Lanka matters, because the return you actually keep is your return after tax. This guide explains, in plain language, the main taxes that apply to ordinary investors, so you are not caught by surprise.
Important: tax rules in Sri Lanka change often. They were amended again in 2026. The figures below are a general guide as of 2026, not a promise of current rates. Always confirm the latest position with the Inland Revenue Department (IRD) and a qualified tax advisor before making decisions. This article is educational only, not tax advice.
The three ways investment income is taxed
Most investment income falls into three buckets, each taxed differently:
The three buckets
- Dividends from shares you own.
- Interest from fixed deposits, savings accounts, and Treasury bills.
- Capital gains, the profit when you sell an asset for more than you paid.
Let us take each in turn.
Tax on dividends
When a company pays you a dividend, tax is usually deducted before the money reaches you. As of 2026, dividends paid by resident companies are generally subject to a 15% withholding tax, which is typically treated as a final tax for individual shareholders. In other words, the dividend you receive has usually already had tax taken off at source.
This is worth remembering when you compare dividend yields: the headline yield is before this tax, so your in-hand income is a little lower. For how dividends work as a strategy, see our guide on dividend investing on the CSE.
Tax on interest (fixed deposits, savings, Treasury bills)
Interest income is also generally taxed at source. As of 2026, interest on fixed deposits is subject to a withholding tax of around 10%, and interest income can also form part of your total assessable income for income tax purposes. The same broad principle applies to interest-style returns from government securities.
The practical takeaway: when you see an advertised fixed deposit or Treasury bill rate, your actual take-home return is slightly lower once tax is accounted for. Factor that in when comparing options like fixed deposits and Treasury bills.
Tax on capital gains
Capital gains tax applies to the profit you make when you sell certain assets for more than you paid. Following amendments enacted in 2026, the capital gains tax rate for individuals was increased to 15%.
There is an important nuance for the stock market. Gains on shares listed on the Colombo Stock Exchange have historically been treated differently from other assets, with a small Share Transaction Levy applied to trades instead. Because the 2026 amendments changed capital gains rules, the exact current treatment of listed-share gains is precisely the kind of detail you should confirm with a tax professional or the IRD before relying on it.
The rate you see advertised is never the rate you keep. Always think in after-tax terms.
The Share Transaction Levy on CSE trades
Separately from income tax, buying and selling shares on the CSE has historically carried a small Share Transaction Levy, collected as part of your transaction on both the buy and the sell side. It is a small percentage of the trade value. Like everything else here, confirm the current rate, since it is set by regulation and can change.
Practical points for investors
What this means for you
- Much of it is automatic. Tax on dividends and interest is usually deducted at source, so you receive the net amount.
- Compare after tax. When weighing a dividend yield or a deposit rate against another option, compare the after-tax figures.
- Keep records of your investments and any tax deducted, which helps at filing time.
- Rules change. Sri Lanka has revised investment taxes several times recently, so check the current position each year.
The bottom line
Tax should never be the only reason you invest or avoid an investment, but ignoring it distorts your picture of what you are really earning. Understand the three buckets, remember that dividends and interest are usually taxed at source, and confirm current rates before you act. When in doubt, a qualified tax advisor is well worth the fee.