Add or remove, it's just 9%
GST in Singapore is a flat 9%. To add it, multiply a GST-exclusive price by 1.09. To remove it from a tax-inclusive price, divide by 1.09 — the difference is the GST baked in. The calculator handles both and shows all three figures.
Common questions
Singapore GST is a flat 9% on most goods and services, after rising from 8% to 9% in 2024.
Divide the GST-inclusive price by 1.09 to get the GST-exclusive amount. The difference is the GST. The calculator does this for you.
GST registration is compulsory once taxable turnover exceeds $1 million a year.