Add or remove 9% GST from a price. Useful for invoices, quotations and checking receipts.
GST (Goods and Services Tax) is Singapore's value-added consumption tax, currently 9% since 1 January 2024. To add GST, multiply the pre-tax amount by 1.09. To extract GST from a tax-inclusive price, divide by 1.09 to get the base amount; the GST portion is the price × 9/109.
Only GST-registered businesses charge and collect GST, and they can claim back GST paid on their own purchases (input tax). Registration is compulsory once taxable turnover exceeds S$1 million a year. Exports and certain international services are zero-rated, while residential property sales/leases and most financial services are exempt.