Singapore GST Calculator 2025 — Add or Remove 9% GST
Calculate Singapore GST instantly. Add 9% GST to get an invoice total, or remove GST from a GST-inclusive price. Supports the current 9% rate (from 1 Jan 2024) and legacy 8% mode for older invoices.
How Singapore GST Is Calculated
- Adding GST: Multiply the pre-GST amount by 1.09 (for 9% rate). The GST portion is pre-GST × 0.09.
- Removing GST: Divide the GST-inclusive amount by 1.09. The GST portion is Total − (Total ÷ 1.09).
- Rate history: GST rose to 9% on 1 January 2024. For invoices dated in 2023 (8%) or before 2023 (7%), use the legacy rate selector.
Singapore GST Guide 2025 — Registration, Exemptions and Rate History
Goods and Services Tax (GST) is a broad-based consumption tax levied on most goods and services in Singapore. It is collected by GST-registered businesses on behalf of IRAS (Inland Revenue Authority of Singapore). The current GST rate of 9% applies from 1 January 2024 following a phased increase from 7% (pre-2023) to 8% (2023) to 9% (2024).
Current and Historical GST Rates
| Period | Rate |
|---|---|
| From 1 January 2024 | 9% |
| 1 January 2023 – 31 December 2023 | 8% |
| 1 July 1994 – 31 December 2022 | 7% |
GST-Exempt and Zero-Rated Supplies
Not all transactions attract GST. Exempt supplies include the sale and lease of residential properties and most financial services (banking, insurance, loans). Zero-rated supplies (0% GST) include export of goods and international services — these are taxable but at 0%, so businesses can still claim input tax credits. Most consumer goods and services, including food at restaurants, retail purchases, professional fees, and digital services, are standard-rated at 9%.
GST Registration Threshold
Businesses with taxable turnover exceeding S$1 million in the past 12 months, or expected to exceed S$1 million in the next 12 months, must register for GST compulsorily. Voluntary GST registration is available below this threshold, often beneficial for businesses with significant input tax credits. Once registered, businesses file GST returns quarterly with IRAS and remit the net GST collected (output tax minus input tax). For more Singapore-specific finance tools, see the Singapore Income Tax Calculator.
Sources: IRAS GST Rates — iras.gov.sg. Reviewed May 2025.
Frequently Asked Questions
Singapore's GST rate is 9% as of 1 January 2024. It was previously 8% (from 1 January 2023) and 7% before that. The rate is applied to most goods and services sold by GST-registered businesses in Singapore. For invoices issued before 1 January 2024, the applicable rate was 8%; for invoices before 1 January 2023, it was 7%.
To extract GST from a GST-inclusive price, divide the total price by 1.09 (for the current 9% rate) to get the pre-GST amount. The GST portion is the difference: Total − (Total ÷ 1.09). For example, a S$109 GST-inclusive price contains S$9 GST and S$100 pre-GST. Use the 'Remove GST' mode in this calculator and enter the GST-inclusive amount.
GST-exempt supplies in Singapore include the sale and lease of residential properties, and financial services such as loans, credit cards, and insurance premiums. Zero-rated supplies (taxable at 0%) include exports of goods and international services. Most other goods and services — retail, food, professional fees, software — are standard-rated at 9% GST.
A Singapore business must register for GST if its taxable turnover exceeds S$1 million for the past 12 months, or if it is expected to exceed S$1 million in the next 12 months. Voluntary registration is also available for businesses below the threshold. Once registered, the business must charge GST on taxable supplies and file GST returns with IRAS quarterly.
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