GST Calculator (Singapore)
Add or remove 9% Singapore GST.
Enter Details
Country / Region
S$
Calculation Result
Net Amount (Before Tax)S$ 1,000.00
Tax (9%)S$ 90.00
Gross Amount (Including Tax)S$ 1,090.00
Pro Tip:Add or remove 9% Singapore GST. Save the result to your Toolbox to compare scenarios side by side.
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How it worksSingapore Rules & Regulations
View Full GuideAdd or remove 9% Singapore GST. Save the result to your Toolbox to compare scenarios side by side.
Key Points for Singapore
- Use figures that exclude indirect taxes (GST/VAT/sales tax) unless the tool asks for gross amounts.
- Keep supporting records for every calculation you rely on for tax or lending decisions.
- Rates, thresholds and limits change — confirm against the official source for your jurisdiction.
- Results are estimates for planning; get professional advice for statutory filings.
Good practice
- Re-run the numbers monthly with actuals, not estimates.
- Save calculations to your Toolbox to compare scenarios over time.
- Share results with your accountant before acting on them.
- Pair this tool with related calculators to see the full picture.
- Download a PDF for your records.
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Related Tools
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Create professional invoices with tax, logo and custom details.
Profit Margin Calculator
Calculate profit, markup and margin for your products or services.
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Convert between 180+ currencies with live exchange rates.
Budget Planner
Plan and track your business budget easily.
Common questionsFrequently Asked Questions
Add or remove 9% Singapore GST on sales and purchases. Enter your numbers on the left and the result updates on the right instantly — nothing is sent to a server.