Singapore Income Tax Calculator (IRAS)

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Annual Chargeable Income (SGD)

Results

Income Tax Payable

S$ 3,350

resident tax, YA2024 rates

Effective Tax Rate	4.19%
Take-Home Income	S$ 76,650

What this calculator does

Applies to Singapore tax residents only. This tool estimates the personal income tax payable to the Inland Revenue Authority of Singapore (IRAS) based on your annual chargeable income — that is, your assessable income after deducting reliefs, donations and personal allowances. It uses the progressive resident tax rates effective from Year of Assessment 2024 (YA2024). Non-residents are taxed differently (typically a flat 15% on employment income or resident rates, whichever is higher) and are not covered here.

How to use it

Enter your annual chargeable income in Singapore dollars and the calculator instantly shows your estimated tax payable, your effective tax rate, and your take-home income. Chargeable income is what remains after subtracting all eligible reliefs (such as Earned Income Relief, CPF relief and qualifying child relief) from your total income.

The formula explained

Singapore uses a progressive bracket system. The first S$20,000 is tax-free. Each subsequent slice of income is taxed at a higher marginal rate, ranging from 2% up to 24% for income above S$1,000,000 (YA2024). Total tax is the sum of each income slice multiplied by that bracket's rate — not your whole income times your top rate.

$$\begin{gathered} \text{Tax} = \sum_{i} \left( \text{taxable}_i \times r_i \right) \\[1.5em] \text{where}\quad \left\{ \begin{aligned} I &= \text{Chargeable Income (SGD)} \\ \text{taxable}_i &= \min(I,\, U_i) - U_{i-1} \quad (\text{if } I > U_{i-1}) \\ U_i &\in \{20000,\,30000,\,40000,\,80000,\,\dots,\,10^{6}\} \\ r_i &\in \{0\%,\,2\%,\,3.5\%,\,7\%,\,\dots,\,24\%\} \end{aligned} \right. \end{gathered}$$

Each slice of chargeable income is taxed at its own bracket rate, rising step by step.

Worked example

For a chargeable income of S$80,000: the first S$20,000 is taxed at 0% (S$0), the next S$10,000 at 2% (S$200), the next S$10,000 at 3.5% (S$350), and the remaining S$40,000 at 7% (S$2,800). Total tax = S$3,350, giving an effective rate of about 4.19% and take-home of S$76,650.

$$\text{Tax} = (20000 \times 0\%) + (10000 \times 2\%) + (10000 \times 3.5\%) + (40000 \times 7\%) = 0 + 200 + 350 + 2800 = 3350$$

A worked example: split income into bands, tax each band, then add the parts together.

FAQ

Is this the same as my total income? No — enter chargeable income, which is after reliefs and deductions.

Are CPF contributions included? Employee CPF contributions are generally relievable, so deduct them before entering your income.

Is this an official figure? It is an estimate for guidance only. Always confirm with your IRAS Notice of Assessment.