Free plan with 5 signature requests every month. See plans →Questions? Talk to sales

Singapore GST Calculator

Add or remove GST in seconds. The standard rate in Singapore is 9%.

SGD
%

Price including GST

$109.00

Net amount
$100.00
GST at 9%
$9.00
Gross amount
$109.00

Singapore GST rates

RateWhat it applies to
9%Standard rate: most goods and services

Zero rate: exports and international services. Exempt: financial services, sale and rental of homes, digital payment tokens, investment precious metals.

How to calculate GST in Singapore

  • To add GST: price before tax × 1.09 = price including tax. For example, 100.00 × 1.09 = 109.00.
  • To remove GST: price including tax ÷ 1.09 = price before tax. For example, 109.00 ÷ 1.09 = 100.00.
  • The tax inside a price that includes it: price including tax × 9 ÷ 109. For 109.00 that is 9.00.

Registering for GST and invoicing

When to register
S$1 million taxable supplies in 12 months.
Local name
Goods and Services Tax

Recent changes and things to know

GST rose from 8% to 9% on 1 January 2024.

Singapore GST: frequently asked questions

What is the GST rate in Singapore?

The standard GST rate in Singapore is 9%.

How do I add GST to a price?

Multiply the price before tax by 1.09. For example, 100 plus 9% GST is 109.00.

How do I remove GST from a price?

Divide the price including GST by 1.09. For example, 109.00 including 9% GST is 100.00 before tax. Do not just take 9% off the total, because that gives the wrong answer.

When do I have to register for GST in Singapore?

S$1 million taxable supplies in 12 months.

Is this GST calculator free?

Yes. It is free, needs no sign-up and runs in your browser, so nothing you type is sent to BunnyDoc.

Sources

  1. IRAS: GST
  2. PwC Worldwide Tax Summaries: Singapore, other taxes

Rates checked in October 2026. Tax rates and rules change, and what you charge depends on what you sell and to whom, so check the official sources above or ask an accountant. This page is general information, not tax advice.

Send invoices with GST worked out for you

BunnyDoc Invoicing adds the right tax to every line, tracks which invoices are paid and records your expenses. Free plan available.