Tax
GST Calculator
Add 9% GST to a price or find the GST and the GST-exclusive amount inside a GST-inclusive price, to the cent.
Result
Updates as you typePrice including GST
$109.00
- GST (9%)
- $9.00
- Price excluding GST
- $100.00
How it's calculated
GST is charged at 9% on the GST-exclusive price of a standard-rated supply. Working back from a GST-inclusive price, divide by 1.09 to find the exclusive amount; the GST is the difference.
Worked example
$2,500.00 at 9% GST:
- If it excludes GST: GST = $2,500.00 × 9% = $225.00 → $2,725.00 including GST
- If it includes GST: exclusive = $2,500.00 / 1.09 = $2,293.58 → $206.42 GST
GST table
| Amount | If exclusive: total incl. GST | If inclusive: GST inside | If inclusive: excl. GST |
|---|---|---|---|
| Amount: $50.00 | If exclusive: total incl. GST$54.50 | If inclusive: GST inside$4.13 | If inclusive: excl. GST$45.87 |
| Amount: $100.00 | If exclusive: total incl. GST$109.00 | If inclusive: GST inside$8.26 | If inclusive: excl. GST$91.74 |
| Amount: $500.00 | If exclusive: total incl. GST$545.00 | If inclusive: GST inside$41.28 | If inclusive: excl. GST$458.72 |
| Amount: $1,000.00 | If exclusive: total incl. GST$1,090.00 | If inclusive: GST inside$82.57 | If inclusive: excl. GST$917.43 |
| Amount: $5,000.00 | If exclusive: total incl. GST$5,450.00 | If inclusive: GST inside$412.84 | If inclusive: excl. GST$4,587.16 |
| Amount: $10,000.00 | If exclusive: total incl. GST$10,900.00 | If inclusive: GST inside$825.69 | If inclusive: excl. GST$9,174.31 |
Frequently asked questions
How do I add GST to a price in Singapore?
Multiply the price by 9% and add it, or multiply by 1.09. $100.00 excluding GST carries $9.00 GST, so the GST-inclusive price is $109.00.
How much GST is in a GST-inclusive price?
Divide the inclusive price by 1.09 to get the GST-exclusive amount; the difference is the GST. $109.00 including GST contains $9.00 GST and $100.00 excluding GST. Taking 9% of the inclusive price overstates the GST.
What is the GST rate in Singapore?
9% on most goods and services, as published by IRAS. It rose from 8% to 9% on 1 January 2024.
What is zero-rated or exempt?
Exports of goods and international services are zero-rated (0%); the sale and lease of residential property, most financial services and investment precious metals are exempt. This calculator assumes a standard-rated supply.
Do displayed prices have to include GST?
Yes. Prices shown to consumers in Singapore must be GST-inclusive, except for food and beverage establishments that impose a service charge. Use the “Includes GST” option to see the GST inside a displayed price.
Sources
Assumes a standard-rated supply; zero-rated and exempt supplies are not covered. Results are for guidance only.
GST 9% · Updated: