GST calculator for Singapore
Add GST to a net amount, strip it back out of a total, and price from cost to shelf — using Singapore's own rates and currency.
GST in Singapore, at a glance
These are the published figures the calculator starts from. Every one of them is editable, because the rate on your invoice is the rate that matters.
| Item | Value |
|---|---|
| Tax name | GST |
| Standard rate | 9% |
| Other published rates | 0% |
| Currency | SGD |
| Registration threshold | SGD 1,000,000 |
A worked GST example
Computed by the same code the calculator runs, so the figures here are exactly what the tool produces.
| Item | Value |
|---|---|
| Before tax | SGD 1,000.00 |
| GST 9% | SGD 90.00 |
| Total including tax | SGD 1,090.00 |
| Tax recovered from the total | SGD 90.00 |
Three steps
- Choose Singapore, and the 9% standard rate and currency are applied.
- Enter your amount, and say whether it already includes GST.
- Read the split, or switch to the margin tab to price the item.
GST questions for Singapore
What is the standard GST rate in Singapore?
9%. Reduced and zero rates also apply to particular goods and services, and they are listed in the table above — pick one of the slabs, or type the rate your invoice uses.
How do I take GST back out of a total?
Divide by 1 plus the rate rather than multiplying by it. At 9%, a total divided by 1 plus 9% gives the amount before tax, and the difference is the tax. Choose "Remove tax" and this is done for you.
Do I have to register for GST?
Registration usually becomes compulsory above a turnover threshold, which is shown in the table above where one applies. Thresholds have conditions and exceptions, so confirm your position with Singapore's tax authority or your accountant.